Co-reporter:Junwei Ye, Xueming Huang, Yiwen Li, Ting Zheng, Guiling Ning, Jie Liang, Yu Liu, Yue Wang
Dyes and Pigments 2017 Volume 147(Volume 147) pp:
Publication Date(Web):1 December 2017
DOI:10.1016/j.dyepig.2017.08.035
•Blue-emitting triarylcyclopentadiene derivatives were synthesized.•Compounds possess highly twisted conformations.•Compounds exhibited aggregation-induced emission enhancement characteristics.•A non-doped OLED displays good electroluminescent performance.Five highly efficient blue-emitting triarylcyclopentadiene derivatives 1–5 were designed and synthesized by introducing phenyl, methoxyphenyl, methoxybiphenyl and methoxynaphthyl groups to cyclopentadiene backbone, respectively. These compounds possess good thermal stability with decomposition temperatures of 264–340 °C and exhibit intense blue fluorescence with maximum emission peaked at 457–470 nm. All compounds emit weak fluorescence in solution, but they become strong emitters in the aggregated state indicating typical aggregation-induced emission enhancement (AIEE) properties. AIEE behaviour was further confirmed by fluorescent changes depended on temperature and solution viscosity as well as time-resolved fluorescence lifetime measurements. Unexpected substituent effect on aggregation structures and fluorescent properties of 1–5 was also observed. Single-crystal structure analysis revealed that highly twisted conformations and bulky substituents on cyclopentadiene core could dramatically suppress the intermolecular π-π interactions leading to intense blue emission of these compounds in aggregates. Furthermore, the non-doped and doped organic light-emitting diodes (OLEDs) using compounds 2 and 5 as the emitting layers have been fabricated, respectively. A non-doped OLED with compound 5 displays good electroluminescent performance with a light-blue emission and a maximum luminance of 3886 cd/m2.Five highly efficient AIEE-active blue-emitting triarylcyclopentadiene derivatives were designed and synthesized. AIEE mechanism were investigated by fluorescent changes depended on temperature and solution viscosity as well as time-resolved fluorescence and single-crystal structural analysis.Download high-res image (426KB)Download full-size image
Co-reporter:Junwei Ye, Hang Cheng, Hong Li, Yaoyao Yang, Siqi Zhang, Abdul Rauf, Qi Zhao, Guiling Ning
Journal of Colloid and Interface Science 2017 Volume 504(Volume 504) pp:
Publication Date(Web):15 October 2017
DOI:10.1016/j.jcis.2017.05.111
A spherical titanium dioxide/silver (TiO2/Ag) composite and a flower-like hierarchical TiO2/Ag composite were prepared via a template-induced method and a solvothermal method based on the Ag/Carbon spheres templates followed by calcination treatment, respectively. The morphologies of the composites were controlled by changing the concentration of reactants and calcination temperature. The antibacterial efficiency of the composites was evaluated with both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus, respectively. The minimal inhibitory concentration, morphological evolution of bacteria and fluorescent-based cell wall/membrane integrity were assayed. The synergistic effects of reactive oxygen species (ROS) and silver ions were observed, which lead to superior antibacterial activities of these TiO2/Ag composites with a bacteriostatic rate as high as 99% even in the absence of light. The morphological effect of the composites on the antibacterial efficacy was also investigated. In addition, a durable antimicrobial coating was also fabricated by incorporating the hierarchical TiO2/Ag composite into a commercial emulsion solution of polyvinyl acetate, which exhibited a promising application in bacterial sensitive locations.Spherical and hierarchical flower-like Ag/TiO2 composites were synthesized by a facile Ag/carbon spheres-induced route and they show superior antimicrobial activities with a bacteriostatic rate as high as 99%.Download high-res image (99KB)Download full-size image
Co-reporter:Raji Feyisa Bogale, Junwei Ye, Yuan Sun, Tongxin Sun, Siqi Zhang, Abdul Rauf, Cheng Hang, Peng Tian and Guiling Ning
Dalton Transactions 2016 vol. 45(Issue 27) pp:11137-11144
Publication Date(Web):13 Jun 2016
DOI:10.1039/C6DT01636G
A luminescent Eu(III)-based coordination polymer, {[Eu(H2O)5(BTEC)][H(C5H6N2)]·3H2O} (1) has been synthesized under hydrothermal conditions using 1,2,4,5-benzenetetracarboxylic acid (H4BTEC) as a linker. Compound 1 possesses an anionic zig-zag chain constructed from the BTEC ligands and [EuO4(H2O)5] nodes. The protonated 4-aminopyridine groups as guests are located between chains. 1 exhibits the characteristic sharp emission bands of Eu3+ at 578, 593, 615, 652 and 693 nm upon excitation at 290 nm. The strong emission of 1 could be quenched effectively by trace amounts of Fe3+ ions even in the presence of other metal ions including Al3+, Ca2+, Cd2+, Co2+, Cr3+, Cu2+, Fe2+, K+, Mg2+, Mn2+, Pd2+ and Zn2+. Similarly, 1 also exhibits superior selectivity and sensitivity towards 4-nitrophenol (4-NP) compared with other competing interfering analytes, such as 2,4,6-trinitrophenol, 2,6-dinitrotolune, 4-nitrotoluene, nitrobenzene, 1,3-dinitrobenzene, o-xylene, nitromethane, nitropropane, phenol, 4-bromophenol and bromobenzene, through a fluorescence quenching mechanism. The possible fluorescence quenching mechanisms are discussed. Moreover, 1 could be used as a visual fluorescent test paper for selectively detecting trace amounts of Fe3+ and 4-NP.
Co-reporter:Hassan Mehdi, Hongchang Pang, Weitao Gong, Manivannan Kalavathi Dhinakaran, Ali Wajahat, Xiaojun Kuang and Guiling Ning
Organic & Biomolecular Chemistry 2016 vol. 14(Issue 25) pp:5956-5964
Publication Date(Web):03 May 2016
DOI:10.1039/C6OB00600K
A novel smart supramolecular organic gelator G-16 containing anion and metal-coordination ability has been designed and synthesized. It shows excellent and robust gelation capability as a strong blue fluorescent supramolecular organic gel OG in DMF. Addition of Zn2+ produced Zn2+-coordinated supramolecular metallogel OG-Zn. Organic gel OG and organometallic gel OG-Zn exhibited efficient and different sensing behaviors towards fluoride ion due to the variation in self-assembling nature. Supramolecular metallogel OG-Zn displayed specific selectivity for fluoride ion and formed OG-Zn-F with dramatic color change from blue to blue green in solution and gel to gel states. Furthermore after directly addition of fluoride into OG produced fluoride containing organic gel OG-F with drastically modulation in color from blue to greenish yellow fluorescence via strong aggregation-induced emission (AIE) property. A number of experiments were conducted such as FTIR, 1H NMR, and UV/Vis spectroscopies, XRD, SEM and rheology. These results revealed that the driving forces involved in self-assembly of OG, OG-Zn, OG-Zn-F and OG-F were hydrogen bonding, metal coordination, π–π interactions, and van der Waal forces. In contrast to the most anion responsive gels, particularly fluoride ion responsive gels showed gel–sol state transition on stimulation by anions, the gel state of OG and OG-Zn did not show any gel-to-sol transition during the whole F− response process.
Co-reporter:Junwei Ye, Yuan Gao, Lei He, Tingting Tan, Wei Chen, Yu Liu, Yue Wang, Guiling Ning
Dyes and Pigments 2016 Volume 124() pp:145-155
Publication Date(Web):January 2016
DOI:10.1016/j.dyepig.2015.09.018
•Three efficient blue-emitting cyclopentadiene derivatives have been synthesized.•Compounds are non-coplanar structures with bulky substituents.•Compounds exhibited aggregation-induced emission enhancement characteristics.•The non-doped organic light-emitting diode based on compound displayed blue emission.Three highly fluorescent blue-emitting molecules, namely 1,2-diphenyl-4-thiophenyl-1,3-cyclopentadiene (DPCP 1), 1,2-diphenyl-4-(4-thiophenyl)phenyl)-1,3-cyclopentadiene (DPCP 2) and 1,2-diphenyl-4-(4-dibenzothiphenyl)phenyl)-1,3-cyclopentadiene (DPCP 3), have been synthesized by using aryl-substituted cyclopentadiene and thiophene or dibenzothiphene as ingredients. The single crystal structure analysis reveals that DPCP 1–3 are non-coplanar structures and bulky substituents on cyclopentadiene core imposed a significant reduction on intermolecular interactions, hence leading to their intense blue emission in both solution and solid state. DPCP 1 and DPCP 3 also showed a typical aggregation-induced emission enhancement in mixed water/acetone solution. These compounds exhibited good thermal stability with decomposition temperatures between 239 and 383 °C. The non-doped organic light-emitting diodes using DPCP 3 as the emitting layer displayed a very low turn-on voltage at 3.2 V and pure blue emission with the Commission Internationale de I'Éclairage (CIEx,y) coordinates of (0.16, 0.16) and a maximum luminance of 2277 cd m−2.
Co-reporter:Yang Zhang, Weitao Gong, Jingjie Yu, Zhiyuan Cheng and Guiling Ning
RSC Advances 2016 vol. 6(Issue 37) pp:30886-30894
Publication Date(Web):15 Mar 2016
DOI:10.1039/C6RA01862A
A series of host-sensitized and color-tunable CaWO4:Tb3+,Eu3+ phosphors were prepared via a high-temperature solid-state reaction route, and the crystal structure and luminescence properties, especially the energy transfer behavior, were investigated in detail. Under UV radiation, the CaWO4 host presents a broad emission band from about 320 to 600 nm centered around 415 nm, ascribed to the charge transfer in WO42− groups; while Eu3+ and Tb3+ ion doped CaWO4 samples show both host emission and respective emission lines derived from the characteristic f–f transitions of activators, which present abundant emission colors owing to an efficient energy transfer from the host to Eu3+/Tb3+ ions. The energy transfer from the host to Eu3+ and Tb3+ was evidenced by directly observing appreciable overlap between the excitation spectrum of the host and the emission spectrum of Eu3+/Tb3+, as well as by the decreased decay time of host emission with increasing Eu3+/Tb3+ concentration. The energy transfer mechanisms in CaWO4:Eu3+/Tb3+ phosphors have been determined to be a resonant type via dipole–dipole interaction. In the Eu3+ and Tb3+ co-doped system, CaWO4:Eu3+,Tb3+, the energy transfer phenomenon not only occurs from host to activators, but also from Tb3+ to Eu3+, resulting in color-tunable emission including white light by simply adjusting the doping concentration of Eu3+ and Tb3+ ions. The PL properties of the as-prepared materials indicate their promising application in solid-state lighting fields.
Co-reporter:Junying Tian, Peng Tian, Hongchang Pang, Guiling Ning, Raji Feyisa Bogale, Hang Cheng, Shanwen Shen
Microporous and Mesoporous Materials 2016 Volume 223() pp:27-34
Publication Date(Web):15 March 2016
DOI:10.1016/j.micromeso.2015.09.055
•A novel and facile sacrificial template route has been demonstrated to prepare Al2O3 hollow microspheres.•The route presented was promising to be applied in preparation of other metal oxides.•The Al2O3 hollow microspheres powder showed superior performance for removal organic dye in aqueous solution.Al2O3 hollow microspheres with hierarchical pores have been synthesized via a novel sacrificial template process with further calcinations, in which CaMg(CO3)2 microspheres were used as sacrificial templates, and Al(NO3)·9H2O was used as aluminum source. The route is facile and promising to use in preparation of other metal oxides. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), thermogravimetry analysis (TGA), and N2 adsorption/desorption. The Al2O3 hollow microspheres samples showed superior adsorption performance, including rapid adsorption rate, excellent adsorption capacity and good reusability for removal of Congo Red from aqueous solution, which made them attractive in environmental remediation.
Co-reporter:Wei-tao Gong, Duo Na, Le Fang, Hassan Mehdi and Gui-ling Ning
Organic & Biomolecular Chemistry 2015 vol. 13(Issue 7) pp:1979-1982
Publication Date(Web):18 Dec 2014
DOI:10.1039/C4OB02498B
Gemini surfactant-like receptor R1 is designed and synthesized. The special preassembly phenomenon of R1 in a nonpolar solvent facilitates the novel ratiometric fluorescence sensing of H2PO4−via an anion-induced reassembly process in organic solvents and an anion-induced disassembly process in water.
Co-reporter:Xiaomin Qian, Weitao Gong, Manivannan Kalavathi Dhinakaran, Peng Gao, Duo Na and Guiling Ning
Soft Matter 2015 vol. 11(Issue 47) pp:9179-9187
Publication Date(Web):18 Sep 2015
DOI:10.1039/C5SM02206A
Two novel bent-shaped π-organogelators 6a and 6b having different terminal pyridine rings as responsive sites were designed, synthesized and fully characterized. A subtle difference in the position of the N atom at the pyridine ring greatly affected their fluorescence and gelation properties. 6b showed remarkably stronger fluorescence both in solution and in the solid state as compared to 6a. Theoretical calculation revealed a clear discrepancy in the electron distribution between them. Furthermore, driven by π–π stacking interaction and hydrophobic interaction, both 6a and 6b can gelate several organic solvents with different polarities. Rheological studies, spectroscopic tests and powder X-ray diffraction showed that 6a displayed a closer stacking mode leading to stronger gel robustness. The xerogel films of 6a and 6b were prepared and utilized to detect acid vapours. Both of them can fulfil the detection of acid vapours through a distinct fluorescence change which could be seen by the naked eye under a UV lamp, but with different sensing modes. A rare gel to gel transformation was also observed upon exposure to acid vapours accompanied by a morphological change.
Co-reporter:Junwei Ye, Xueming Huang, Yuan Gao, Xiaoxiao Wang, Ting Zheng, Yuan Lin, Xin Liu and Guiling Ning
CrystEngComm 2015 vol. 17(Issue 48) pp:9311-9317
Publication Date(Web):09 Nov 2015
DOI:10.1039/C5CE01849H
Fluorescent organic nanospheres, pod-like connecting spheres and microrods based on 1,2-diphenyl-4-(4-dibenzothienyl)phenyl-1,3-cyclopentadiene (DPCP) have been prepared via controlling the solvent composition. The influence of concentration, surfactants and solvents on the morphologies of products was examined. The formation of particles with different morphologies could be attributed to the solubility-controlled crystalline nucleation. Single crystal X-ray analysis reveals that the molecule of DPCP has a non-coplanar geometry, and two molecules are packed to form a dimer as an X-aggregate. Further, one-dimensional chains of DPCP additionally avoided the maximum face-to-face stacking. The solution of DPCP in methanol has weaker emission with a peak at 455 nm, however, the nanospheres, pod-like connecting spheres and microrods exhibited remarkably enhanced fluorescence emission with peaks at 447, 448 and 468 nm, respectively. Additionally, fluorescence change behavior was further verified by DFT calculation and time-resolved emission decay measurements.
Co-reporter:Hang Cheng, Junwei Ye, Yuan Sun, Wenjie Yuan, Junying Tian, Raji Feyisa Bogale, Peng Tian and Guiling Ning
RSC Advances 2015 vol. 5(Issue 98) pp:80668-80676
Publication Date(Web):17 Sep 2015
DOI:10.1039/C5RA16092H
Hierarchical Ag/TiO2 composites were successfully synthesized via a hydrated magnesium carbonate hydroxide template-induced route. The prepared composites possess hierarchical flower-like structure and high Brunauer–Emmett–Teller (BET) surface area of 131.9 m2 g−1. The amount of silver nanoparticles (Ag NPs) with diameter of 20–40 nm in the composite can be adjusted by the concentration of AgNO3 solution. The antibacterial potency of Ag/TiO2 composites was investigated against Gram-negative bacteria, Escherichia coli (E. coli) and Gram-positive bacteria, Staphylococcus aureus (S. aureus) by determining the minimal inhibitory concentration (MIC), the growth curve of bacteria and using the zone of inhibition technique. The synergistic effect of Ag NPs and TiO2 lead to superior and long-term antimicrobial activities of the composites with a bacteriostatic rate as high as 99.99%. Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and the fluorescence microscopy showed the integrity of membrane of the bacteria was destroyed by adding a given amount of composites resulting in cell death as well. The mechanism of antibacterial activity of composites was also taken into account by using TEM, inductively coupled plasma atomic emission spectrometry (ICP-AES), ultraviolet visible diffuse reflectance spectroscopy and fluorescent microscopy.
Co-reporter:Yang Zhang, Weitao Gong, Jingjie Yu, Hongchang Pang, Qiang Song and Guiling Ning
RSC Advances 2015 vol. 5(Issue 77) pp:62527-62533
Publication Date(Web):16 Jul 2015
DOI:10.1039/C5RA12502B
A series of single-phase CaWO4:Dy3+ phosphors have been prepared via a conventional solid state reaction process. X-Ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), photoluminescence (PL), and fluorescent decay curves were used to characterize the synthesized samples. Under UV light excitation, the CaWO4 sample shows a blue emission in a broad band centered at about 415 nm originating from the WO42− groups, while the Dy3+ ions doped CaWO4 samples show strong line emissions coming from the characteristic f–f transitions due to an efficient energy transfer from WO42− to Dy3+. The decreases of decay lifetimes of host emissions in CaWO4:Dy3+ demonstrated the energy transfer from the host to Dy3+. The energy transfer mechanism in CaWO4:Dy3+ phosphors has been determined to be a resonant type via a dipole–dipole mechanism. By simply controlling the doping concentration of Dy3+, the PL color of CaWO4:Dy3+ phosphors varies from blue to yellow-green, and especially the white light emission is realized in CaWO4:xDy3+ (x = 0.06). The PL properties of the as-prepared materials indicate that CaWO4:Dy3+ could potentially serve as a single-phase white-light-emitting phosphor in solid-state lighting and display fields.
Co-reporter:Junying Tian, Peng Tian, Guiling Ning, Hongchang Pang, Qiang Song, Hang Cheng and Haixia Fang
RSC Advances 2015 vol. 5(Issue 7) pp:5123-5130
Publication Date(Web):10 Dec 2014
DOI:10.1039/C4RA11032C
A porous MgAl2O4 spinel (MAS) has been synthesized via a facile hard template process with further calcination, in which a hierarchical Mg5(OH)2(CO3)4·4H2O template with a high surface area was used as a hard template and magnesium source, and AlCl3·6H2O was used as an alumina source. The as-prepared samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), thermogravimetry analysis (TGA) and N2 adsorption–desorption. The MAS samples showed superior adsorption performance, including rapid adsorption rate, excellent adsorption capacity and good reusability for removal of Congo red (CR) from aqueous solution. The superior performance could be ascribed to the strong interaction between the MAS samples and CR, as well as the hierarchical porous structure and the high specific surface area of the samples. The maximum adsorption capacity of the MAS samples for CR was nearly 845 mg g−1, which is higher than most of the previously reported adsorbents. The CR removal process was found to follow the pseudo-second-order rate equation and the Sips adsorption model.
Co-reporter:Yang Zhang, Weitao Gong, Jingjie Yu, Yuan Lin and Guiling Ning
RSC Advances 2015 vol. 5(Issue 117) pp:96272-96280
Publication Date(Web):28 Oct 2015
DOI:10.1039/C5RA19345A
A series of novel single-phase color tunable LiGd(WO4)2(LGW):Re3+ (Re = Tm, Tb, Dy, Eu) phosphors have been synthesized by a solid-state reaction. X-ray diffraction (XRD), FT-IR, photoluminescence (PL) and fluorescence decay curves were utilized to characterize the as-prepared samples. Under the excitation of UV light, LGW:Tm3+, LGW:Tb3+, LGW:Dy3+ and LGW:Eu3+ exhibit the characteristic emissions of Tm3+ (blue), Tb3+ (green), Dy3+ (yellow) and Eu3+ (red), respectively. On the one hand, by simply adjusting the doping concentration of Eu3+ ions in the LGW:2% Tm3+, 4% Tb3+, x% Eu3+ system, a white emission in a single-phase was achieved by blending simultaneously the blue, green, and red emissions of Tm3+, Tb3+, and Eu3+ ions in the LGW host, in which the energy transfer from Tb3+ to Eu3+ ions was found to play an important role. On the other hand, a white emission can also be realized based on the energy transfer from Tm3+ to Dy3+ ions in the LGW:2% Tm3+, x% Dy3+ system. The energy transfer mechanism from Tm3+ to Dy3+ ions has been demonstrated to be through dipole–quadrupole interaction and the critical distance (RTm–Dy) calculated by the concentration quenching method is 16.03 Å. The PL properties of as-prepared materials indicate that LGW:Re3+ (Re = Tm, Tb, Dy, Eu) may be potentially applied as single-phase white-light-emitting phosphors for UV-excited WLEDs.
Co-reporter:Qiang Song, Hongchang Pang, Weitao Gong, Guiling Ning, Song Gao, Xinglong Dong, Chunjing Liu, Junying Tian and Yuan Lin
RSC Advances 2015 vol. 5(Issue 6) pp:4256-4260
Publication Date(Web):18 Nov 2014
DOI:10.1039/C4RA11015C
Nanostructured vanadium pentoxide (V2O5) crusts were facilely synthesized via the combustion of a precursor by mixing commercial V2O5 with molten urea. The nanocrusts were transferred to nanorods during further annealing at 630 °C. Both the V2O5 nanocrusts and V2O5 nanorods were used preliminarily as a cathode material for Li-ion batteries. Their electrode performance was highly improved compared to commercial V2O5.
Co-reporter:Qiang Song, Hongchang Pang, Weitao Gong, Guiling Ning, Yang Zhang, Xiaowei Cheng, Yuan Lin
Materials Letters 2015 Volume 161() pp:244-247
Publication Date(Web):15 December 2015
DOI:10.1016/j.matlet.2015.08.070
•W-doped V2O5 was obtained by a molten and water quenching technology.•W doped VO2 was synthesized by a facile solid reaction.•The effects of thermal treatment for W doped VO2 were studied detailedly.•High temperature annealing could remarkably enhance the MIT sensitivity of VO2.•Electrical resistance is simultaneously sensitive in the phase transition.Vanadium dioxide (VO2) has been considered as a remarkable candidate for temperature-sensing switching and thermochromic materials. However, the reduction of phase transition temperature for tungsten (W) doped VO2 always comes together with broadening range, which impedes its application at room temperature even much lower. The W doped VO2 with sensitive phase transition was synthesized via a facile solid reaction and subsequently high temperature annealing. With the heat treatment at 1000 °C, the phase transition of W doped VO2 could maintain a narrow temperature range at room temperature or even much lower. Interestingly, electrical resistance as one of physical characteristics is simultaneously sensitive in the phase transition.
Co-reporter:Junwei Ye, Dai Deng, Yuan Gao, Xiaoxiao Wang, Lijian Yang, Yuan Lin, Guiling Ning
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 2015 Volume 134() pp:22-27
Publication Date(Web):5 January 2015
DOI:10.1016/j.saa.2014.06.074
•1,2-Diphenyl-4-(3-methoxyphenyl)-1,3-cyclopentadiene was synthesized and characterized.•Aggregation-induced emission enhancement (AIEE) phenomena were investigated.•A combination effect of J-aggregation and restriction of intramolecular rotation was observed.•The thermal stability, electrochemical properties were reported.•Quantum chemistry computation was conducted using the DFT.1,2-Diphenyl-4-(3-methoxyphenyl)-1,3-cyclopentadiene (DPMPCP) was synthesized via aldol condensation reaction followed by cyclization and dehydration reaction. Its structure was characterized by 1H NMR, 13C NMR spectra, high-resolution mass spectrometry and single-crystal X-ray diffraction. The UV–vis absorption and photoluminescence spectra of DPMPCP in solution and aggregation state were studied. It shows solvent-dependent fluorescence emission and aggregation-induced emission enhancement (AIEE) characteristic when DPMPCP aggregated in water/acetonitrile mixture or in crystals. The crystal structure analysis reveals combination effects of J-aggregation molecule stacking and restriction of intramolecular rotation by intermolecular interactions on AIEE. Additionally, the thermal stability, electrochemical property and DFT calculation of DPMPCP were investigated.Graphical abstract1,2-Diphenyl-4-(3-methoxyphenyl)-1,3-cyclopentadiene was facilely synthesized and exhibits weak emission in organic solvents but strong fluorescence in aggregated state, indicating that it is a typical aggregation-induced emission enhancement (AIEE) compound.
Co-reporter:Dr. Junwei Ye;Limei Zhao;Raji Feyisa Bogale;Yuan Gao;Xiaoxiao Wang;Xiaomin Qian;Song Guo; Jianzhang Zhao ; Guiling Ning
Chemistry - A European Journal 2015 Volume 21( Issue 5) pp:2029-2037
Publication Date(Web):
DOI:10.1002/chem.201405267
Abstract
A luminescent cadmium–pamoate metal–organic framework, [Cd2(PAM)2(dpe)2(H2O)2]⋅0.5(dpe) (1), has been synthesized under hydrothermal conditions by using π-electron-rich ligands 4,4′-methylenebis(3-hydroxy-2-naphthalenecarboxylic acid) (H2PAM) and 1,2-di(4-pyridyl)ethylene (dpe). Its structure is composed of both mononuclear and dinuclear CdII building units, which are linked by the PAM and dpe ligands, resulting in a (4,8)-connected 3D framework. The π-conjugated dpe guests are located in a 1D channel of 1. The strong emission of 1 could be quenched efficiently by trace amounts of 2,4,6-trinitrophenol (TNP), even in the presence of other competing analogues such as 4-nitrophenol, 2,6-dinitrotoluene, 2,4-dinitrotoluene, nitrobenzene, 1,3-dinitrobenzene, hydroquinone, dimethylbenzene, and bromobenzene. The high sensitivity and selectivity of the fluorescence response of 1 to TNP shows that this framework could be used as an excellent sensor for identifying and quantifying TNP. In the same manner, 1 also exhibits superior selectivity and sensitivity towards Cu2+ compared with other metal ions such as Zn2+, Mn2+, Mg2+, K+, Na+, Ni2+, Co2+, and Ca2+. This is the first MOF that can serve as a dual functional fluorescent sensor for selectively detecting trace amounts of TNP and Cu2+.
Co-reporter:Xuesong Wang, Hongchang Pang, Wendan Chen, Yuan Lin, Lishuai Zong, and Guiling Ning
ACS Applied Materials & Interfaces 2014 Volume 6(Issue 10) pp:7223
Publication Date(Web):May 9, 2014
DOI:10.1021/am500380n
A novel and efficient halogen-free composite flame retardant (CFR) consisting of a brucite core and a fine zinc borate [Zn6O(OH)(BO3)3] hierarchical nanostructure shell was designed and synthesized via a facile nanoengineering route. It had been demonstrated that this unique hybrid structure possessed a high BET specific surface area (65 m2/g) and could significantly enhance the interfacial interaction when mixing with ethylene-vinyl acetate (EVA). This improved the transfer of stress between CFR particles and EVA matrix and increased the viscosity of EVA/EVA blends, which was beneficial for droplet inhibition and char forming. The mechanical properties and flammability behaviors of the EVA/CFR blends had been compared with the EVA/physical mixture (PM, with the given proportion of brucite and Zn6O(OH)(BO3)3). The mechanical properties of EVA/CFR blends, especially the tensile strength (TS), presented a remarkable increase reaching at least a 20% increment. Meanwhile, with the same 45 wt % of fillers, the EVA/CFR formulation could achieve a limiting oxygen index (LOI) value of 33 (37.5 % higher than that of EVA/PM blends) and UL-94 V-0 rating. Moreover, the heat release rate (HRR), peak heat release rate (PHRR), total heat released (THR), smoke production rate (SPR) and mass loss rate (MLR) were considerably reduced, especially PHRR and SPR for EVA/CFR blends were reduced to 32%. According to this study, the design of fine structure might pave the way for the future development of halogen-free flame retardants combining both enhanced mechanical properties and excellent flame retardant behaviors.Keywords: brucite; flame retardant; hierarchical structure; interfacial interaction; mechanical properties; zinc borate;
Co-reporter:Qiong Zheng, Feng Xing, Xianfeng Li, Tao Liu, Qinzhi Lai, Guiling Ning, Huamin Zhang
Journal of Power Sources 2014 Volume 266() pp:145-149
Publication Date(Web):15 November 2014
DOI:10.1016/j.jpowsour.2014.04.148
•A proper performance evaluation method for flow batteries is very important.•Polarization curve is not advisable to evaluate flow batteries' performance.•Charging–discharging test is optimal for flow batteries' performance evaluation.Performance evaluation method is very important for the research on flow batteries. Charging–discharging test is the most typical evaluation method for flow batteries. Recently, the polarization curves, together with the associated power density curves, which are commonly employed in fuel cells, have come into use for flow batteries' performance evaluation. Based on the investigation of performance evaluation method, it is confirmed charging–discharging test is optimal for flow batteries' performance evaluation. A comparison of voltage losses (voltage efficiency, VE) can be clearly delivered from the polarization curves, which are quite practical for fuel cells' performance evaluation. While for flow batteries, apart from VE, coulombic efficiency (CE), energy efficiency (EE), utilization of electrolyte (UE) and capacity stability should be seriously considered during charging–discharging process. However, CE and UE are inaccessible; accordingly EE and capacity stability can't be detected from polarization curves. Therefore, the polarization curve is improper to serve as a performance evaluation method for flow batteries. On the premise of a proper CE, a rough performance evaluation for flow batteries can be achieved via the polarization curves. The peak power density is of limited significance in practical use due to the extremely low EE obtained at that point.
Co-reporter:Xinyi Lu, Junwei Ye, Yuan Sun, Raji Feyisa Bogale, Limei Zhao, Peng Tian and Guiling Ning
Dalton Transactions 2014 vol. 43(Issue 26) pp:10104-10113
Publication Date(Web):14 Apr 2014
DOI:10.1039/C4DT00270A
Four Ag-based coordination polymers [Ag(Bim)] (1), [Ag2(NIPH)(HBim)] (2), [Ag6(4-NPTA)(Bim)4] (3) and [Ag2(3-NPTA)(bipy)0.5(H2O)] (4) (HBim = 1H-benzimidazole, bipy = 4,4′-bipyridyl, H2NIPH = 5-nitroisophthalic acid, H2NPTA = 3-/4-nitrophthalic acid) have been synthesized by hydrothermal reaction of Ag(I) salts with N-/O-donor ligands. Single-crystal X-ray diffraction indicated that these coordination polymers constructed from mononuclear or polynuclear silver building blocks exhibit three typical structure features from 1-D to 3-D frameworks. These compounds favour a slow release of Ag+ ions leading to excellent and long-term antimicrobial activities, which is distinguished by their different topological structures, towards both Gram-negative bacteria, Escherichia coli (E. coli) and Gram-positive bacteria, Staphylococcus aureus (S. aureus). In addition, these compounds show good thermal stability and light stability under UV-vis and visible light, which are important characteristics for their further application in antibacterial agents.
Co-reporter:Qiang Song, Weitao Gong, Guiling Ning, Hassan Mehdi, Guiqi Zhang, Junwei Ye and Yuan Lin
Physical Chemistry Chemical Physics 2014 vol. 16(Issue 19) pp:8783-8786
Publication Date(Web):24 Feb 2014
DOI:10.1039/C4CP00366G
A synergic effect of sodium on the metal–insulator transition temperature reduction of tungsten-doped vanadium dioxide is noted. With the assistance of sodium, doping with tungsten yields an extra depression in phase temperature of 6–12 °C over that of 20–26 °C per at% of tungsten.
Co-reporter:YU Jingjie, Weitao GONG, Yanjie ZHANG, Guiling NING
Journal of Luminescence 2014 Volume 147() pp:250-252
Publication Date(Web):March 2014
DOI:10.1016/j.jlumin.2013.11.004
•Apatite-silicate phosphors doped with Eu, which shows two or three peaks and are beneficial for potential use as white-light-emitting diodes.•Eu2+ occupies three sites of the lattice because of the cations have three different positions in apatite structure.•Two peaks at 415 nm and 507 nm observed for Ba9.25(PO4)4(SiO4)2:0.75 Eu2+ were converted to three peaks at 415 nm, 507 nm and 565 nm respectively for (Ba6.94Sr2.31)(PO4)4(SiO4)2:0.75 Eu2+.•The phosphor of emission at 507 nm and 565 nm are ascribed to anomalous fluorescent emission.New phosphors based on apatite-silicate single matrix doped with Eu ions were prepared by solid state reaction. One phosphor, Ba9.25(PO4)4(SiO4)2:0.75 Eu2+, showed two emission peaks located at 415 nm and 507 nm. In contrast, another phosphor, (Ba6.94Sr2.31)(PO4)4(SiO4)2:0.75 Eu2+, owing to the presence of excess SrF2, exhibited three clear emission peaks at 415 nm, 507 nm, and 565 nm, respectively. This is beneficial for potential use as white-light-emitting diodes.
Co-reporter:Xinyi Lu, Junwei Ye, Dekui Zhang, Ruixia Xie, Raji Feyisa Bogale, Yuan Sun, Limei Zhao, Qi Zhao, Guiling Ning
Journal of Inorganic Biochemistry 2014 Volume 138() pp:114-121
Publication Date(Web):September 2014
DOI:10.1016/j.jinorgbio.2014.05.005
Two novel Ag-based metal–organic frameworks (MOFs) [Ag2(O-IPA)(H2O)·(H3O)] (1) and [Ag5(PYDC)2(OH)] (2) were synthesized under the hydrothermal conditions using aromatic–carboxylic acids containing hydroxyl and pyridyl groups as ligands (HO-H2IPA = 5-hydroxyisophthalic acid and H2PYDC = pyridine-3, 5-dicarboxylic acid). Single crystal X-ray diffraction indicated that two compounds exhibit three-dimensional frameworks constructed from different rod-shaped molecular building blocks. Both compounds favor slow release of Ag+ ions leading to excellent and long-term antimicrobial activities towards Gram-negative bacteria, Escherichia coli (E. coli) and Gram-positive bacteria, Staphylococcus aureus (S. aureus). Their antibacterial potency was evaluated by using a minimal inhibition concentration (MIC) benchmark and an inhibition zone testing. High-resolution transmission electron microscope images indicate that the Ag-based MOFs could rupture the bacterial membrane resulting in cell death. Hematological study showed that these MOFs exhibit good biocompatibility in mice. In addition, good thermal stability and optical stability under UV–visible and visible light are beneficial for their antibacterial application.Two three-dimensional Ag-based metal–organic frameworks [Ag2(O-IPA)(H2O)·(H3O)] and [Ag5(PYDC)2(OH)] were synthesized by using carboxylate ligands. Both compounds favor a slow release of Ag+ ions leading to excellent antimicrobial activities. The compounds could rupture the bacterial membrane and exhibit good biocompatibility. They exhibit good thermal–optical stability under UV–vis and visible light.
Co-reporter:Xiuying Han, Peng Tian, Hongchang Pang, Qiang Song, Guiling Ning, Yanhao Yu and Haixia Fang
RSC Advances 2014 vol. 4(Issue 53) pp:28119-28125
Publication Date(Web):05 Jun 2014
DOI:10.1039/C4RA02313G
MgO–MgFe2O4 composites with magnetism and adsorption capacity for Congo red were synthesized by an ion exchange route using magnesium carbonate as templates. X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and magnetic hysteresis loop were carried out to characterize the crystalline phase, microstructure, and magnetic property of as-obtained MgO–MgFe2O4 composites. Congo red adsorption experiments were conducted to evaluate the adsorption property of the as-synthesized samples. The results showed that the as-synthesized MgO–MgFe2O4 composites have a hierarchical structure, magnetic properties and good adsorption performance. The optimized sample exhibited an excellent adsorption capacity (498 mg g−1) for Congo red, which is much higher than many other hierarchical magnetic materials.
Co-reporter:Wei-tao Gong, Duo Na, Hassan Mehdi, Jun-wei Ye, Gui-ling Ning
Journal of Organometallic Chemistry 2014 Volumes 772–773() pp:314-319
Publication Date(Web):1 December 2014
DOI:10.1016/j.jorganchem.2014.09.006
•New molybdenum coordination complexes were synthesized.•New molybdenum coordination complexes were characterized crystallographically.•The steric effects of PR3 weakened the coordination ability of the free ylides.•The steric effect of PR3 rather than electronic effect is the dominating factor.The hitherto new molybdenum coordination complexes (η5-C5HPh3PEt3)Mo(CO)3 (I), (η5-C5HPh3PMe2Ph)Mo(CO)3 (II) and (η5-C5HPh3PMePh2) Mo(CO)3 (III) has been synthesized and characterized via substitution reactions of triethylphosphonium triphenylcyclopentadienylide (C5HPh3PEt3), dimethylphenylphosphonium triphenylcyclopentadienylide (C5HPh3PMe2Ph) and diphenylmethylphosphonium triphenylcyclopentadienylide (C5HPh3PMePh2) with Mo(CO)3(CH3CN)3 respectively as a stable coordination complexes. The structure of compound was characterized on the basis of 1H NMR, 13C NMR, 31P NMR spectroscopies, elemental analyses, and X-ray crystallography. The structures of the free ligands and their molybdenum complexes I, II, and III were compared with the reported analogous compound (C5H4PMePh2) and its complex (η5-C5H4PMePh2)Mo(CO)3. The IR spectrum of complex in which values of ν(CO) and the M−C5 (centroid) bond lengths showing strong evidences about the effects the electron-donating ability of ligands towards Mo(CO)3(CH3CN)3 by the multiple phenyl group of cyclopentadienyl ring. The P–C (1) bond distance of II shorter than that of III indicated that the steric effect of PR3 moiety is the dominating factor.New molybdenum coordination complexes were synthesized via the substitution reactions of various phosphonium triphenylcyclopentadienylides with Mo(CO)3(CH3CN)3 respectively and characterized crystallographically.
Co-reporter:Limei Zhao, Junwei Ye, Wenbing Li, Raji Feyisa Bogale, Bin Wang, Weitao Gong, Guiling Ning
Inorganic Chemistry Communications 2014 Volume 46() pp:212-215
Publication Date(Web):August 2014
DOI:10.1016/j.inoche.2014.05.037
•A luminescent cyclic binuclear zinc-pamoate complex was synthesized.•Two Zn2+ ions are bridged by two PAM ligands to from a 24-membered ring binuclear structure.•The emission of 1 could be quenched efficiently by 2,4,6-trinitrophenol.•1 has exceptional ability for selectively detecting 2,4,6-trinitrophenol.A luminescent cyclic binuclear zinc–pamoate complex, [Zn2(PAM)2(1,3-PDA)2] (1), has been synthesized by self-assembly of Zn(II) ions, 4,4′-methylenebis(3-hydroxy-2-naphthalenecarboxylic acid) (H2PAM) and 1,3-propanediamine (1,3-PDA) under hydrothermal condition and characterized by elemental analysis, infrared spectroscopy, powder X-ray diffraction and single-crystal X-ray diffraction analysis. In 1, two Zn2 + ions are bridged by two PAM ligands to form a 24-membered ring binuclear structure. The emission of 1 could be quenched efficiently and selectively by 2,4,6-trinitrophenol(TNP), indicating that 1 can serve as a selective chemosensor for the detection of TNP via a fluorescence quenching mechanism.A luminescent cyclic binuclear zinc–pamoate complex, [Zn2(PAM)2(1,3-PDA)2] (1), has been synthesized and can serve as a selective chemosensor for the detection of TNP via a fluorescence quenching mechanism.
Co-reporter:Hongchang Pang, Peng Tian, Jinghui Wang, Xuesong Wang, Guiling Ning, Yuan Lin
Materials Letters 2014 Volume 131() pp:206-209
Publication Date(Web):15 September 2014
DOI:10.1016/j.matlet.2014.05.192
•Carnation-like Mg5(CO3)4(OH)2·4H2O was synthesized in a simulative flue gas absorption technology.•Rhombohedral MgCO3 was synthesized in the simulative flue gas absorption technology.•The carbonation parameters of brucite are also studied in detail.•A probable carbonation mechanism from brucite to magnesite is proposed.•The simple method could bring a significant progress for residue treatment.Basic magnesium carbonate/magnesium carbonate microstructured materials have been synthesized as by-products in a simulative flue gas absorption technology through a direct carbonation of Mg-based (brucite) slurry. A probable carbonation mechanism from brucite to magnesite is proposed via a couple of gas–solid reaction pathways. Experimental results demonstrate that the reactions undergo transitional basic magnesium carbonate carnations constructed by microflakes and then development of rhombohedral magnesium carbonate microstructured crystals with further incorporation of carbon dioxide. Furthermore, the carbonation parameters of brucite are also studied in detail. Since the novel approach is simple and has a high additional value in combination with the flue gas absorption technology, the process could bring significant progress for residue treatment in chemical CO2 capture.Basic magnesium carbonate/magnesium carbonate microstructured materials have been synthesized as by-products in a simulative flue gas absorption technology through a direct carbonation of Mg-based (brucite) slurry.
Co-reporter:Xuesong Wang, Hongchang Pang, Wendan Chen, Yuan Lin, Guiling Ning
Materials Letters 2014 120() pp: 69-72
Publication Date(Web):
DOI:10.1016/j.matlet.2014.01.034
Co-reporter:Wei-tao Gong, Bei Gao, Jian-zhang Zhao and Gui-ling Ning
Journal of Materials Chemistry A 2013 vol. 1(Issue 18) pp:5501-5504
Publication Date(Web):26 Mar 2013
DOI:10.1039/C3TA10412E
A reusable colorimetric and fluoremetric chemodosimeter for the highly selective detection of Hg2+ has been rationally designed.
Co-reporter:Peng Tian, Xiu-ying Han, Gui-ling Ning, Hai-xia Fang, Jun-wei Ye, Wei-tao Gong, and Yuan Lin
ACS Applied Materials & Interfaces 2013 Volume 5(Issue 23) pp:12411
Publication Date(Web):November 13, 2013
DOI:10.1021/am403352y
The porous hierarchical MgO with superb adsorption properties has been synthesized by a facile and scaled-up method. The X-ray powder diffraction, electron microscopy, Fourier transformed infrared, and N2 adsorption–desorption were carried out to study the microstructure of the as-synthesized precursor and product. It has been demonstrated that the as-prepared MgO has a porous hierarchical structure and a high specific surface area (148 m2 g–1). And the MgO sample exhibited super adsorption properties, with maximum adsorption capacity of 2409 mg g–1 for Congo red, which is the highest reported value. Moreover, the adsorption process of Congo red on porous hierarchical MgO was systematically investigated, which was found to obey the pseudo-second-order rate equation and Langmuir adsorption model.Keywords: adsorption; Congo red; magnesium oxide; porous hierarchical structure;
Co-reporter:Wen-dan Chen, Wei-tao Gong, Zhi-qiang Ye, Yuan Lin and Gui-ling Ning
Dalton Transactions 2013 vol. 42(Issue 28) pp:10093-10096
Publication Date(Web):09 May 2013
DOI:10.1039/C3DT50832C
Efficient ratiometric fluorescent Fe3+ probes were designed and synthesized by linking a conjugated naphthalene chromophore to a rhodamine platform and a lipophilic triphenylphosphonium (TPP) cation. The probes could sensitively and selectively detect mitochondrial Fe3+ in living cells.
Co-reporter:Junwei Ye, Xiangdong Zhang, Dai Deng, Guiling Ning, Tianqing Liu, Meiling Zhuang, Lijian Yang, Weitao Gong and Yuan Lin
RSC Advances 2013 vol. 3(Issue 22) pp:8232-8235
Publication Date(Web):08 Apr 2013
DOI:10.1039/C3RA41274A
A facile procedure for C–C bond cleavage of cyclopentadiene rings is reported, and a series of water-soluble pyrylium tetrachloroferrates (Py–Fes) were synthesized. Different photoluminescence properties of Py–Fes were simply tuned by changing the types and positions of substituent groups.
Co-reporter:Qiushuang Zhang, Junwei Ye, Peng Tian, Xinyi Lu, Yuan Lin, Qi Zhao and Guiling Ning
RSC Advances 2013 vol. 3(Issue 25) pp:9739-9744
Publication Date(Web):23 Apr 2013
DOI:10.1039/C3RA40596F
Ag/TiO2 and Ag/SiO2 composite spheres with core–shell structures were synthesized via an ion-exchange method. Thin layers of TiO2 or SiO2 are deposited onto CaMg(CO3)2 templates using tetrabutyl titanate or tetraethoxysilane, respectively, and the CaMg(CO3)2 cores are subsequently replaced by Ag2CO3 based on the solubility product constant gap, followed by calcination of the intermediates, resulting in Ag/TiO2 and Ag/SiO2 composite particles. The samples were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), thermogravimetry analysis (TGA), Fourier transform infrared spectroscopy (FT-IR) and energy dispersive X-ray spectroscopy (EDX). The amount of Ag nanoparticles in the composites can be adjusted using the relative concentration of the AgNO3 solution. Both the Ag/TiO2 and Ag/SiO2 composites exhibit excellent antibacterial activities using E. coli and S. aureus as test bacterial spawn.
Co-reporter:Qi Zhao, Chen Liu, Xueju Su, Shuai Zhang, Wei Song, Su Wang, Guiling Ning, Junwei Ye, Yuan Lin, Weitao Gong
Applied Surface Science 2013 Volume 274() pp:101-104
Publication Date(Web):1 June 2013
DOI:10.1016/j.apsusc.2013.02.112
Highlights
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A range of Ni–P–TiO2 nano-composite coatings were prepared on stainless steel 316L using electroless plating technique.
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The Ni–P–TiO2 coatings reduced bacterial adhesion by up to 75%, compared with stainless steel.
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The electron donor surface energy of the Ni–P–TiO2 coatings increased significantly with increasing TiO2 content.
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The number of adhered bacteria decreased with increasing electron donor surface energy of the coatings.
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The Ni–P–TiO2 coatings have potential applications in heat exchangers and pipelines etc. to reduce biofouling formation.
Co-reporter:Xiangdong Zhang, Junwei Ye, Lifeng Xu, Lijian Yang, Dai Deng, Guiling Ning
Journal of Luminescence 2013 Volume 139() pp:28-34
Publication Date(Web):July 2013
DOI:10.1016/j.jlumin.2013.02.026
A series of cyclopentadiene derivates, namely, 1,2,4-triphenylcyclopenta-1,3-diene (1), 1,2-diphenyl-4-(p-methoxyphenyl)cyclopenta-1,3-diene (2) and 1,2-di(p-methoxyphenyl)-4-phenylcyclopenta-1,3-diene (3), were synthesized and their photoluminescence properties in solutions and aggregation state were investigated. Different photoluminescence properties of 1–3 were tuned by changing types and replace position of substituent groups. These cyclopentadiene derivates display solvent-dependent fluorescence emissions and typical aggregation-induced emission enhancement (AIEE) characteristics. The crystal structure analysis reveals that intermolecular C–H…π interactions and X-aggregation molecule stacking have a dramatic effect on the photoluminescent properties of 1–3. Additionally, the DFT calculations of these compounds were investigated.Graphical abstractA series of aryl-substituted cyclopentadiene derivatives with AIEE properties were synthesized and their crystal structures and photoluminescence properties in solution and aggregation state were studied.Highlights► A series of cyclopentadiene derivates were synthesized via aldol condensation followed cyclizing and dehydrating reaction. ► The effect of solvents on fluorescence properties of these compounds were investigated in seven organic solvents. ► These compounds show typical aggregation-induced emission enhancement properties.
Co-reporter:Xuesong Wang, Hongchang Pang, Wendan Chen, Yuan Lin, Guiling Ning
Polymer Degradation and Stability 2013 Volume 98(Issue 12) pp:2609-2616
Publication Date(Web):December 2013
DOI:10.1016/j.polymdegradstab.2013.09.021
A novel organic-inorganic hybrid flame retardant consisting of a brucite core and a dodecylamine polyphosphate shell was synthesized by a facile nanoengineering route. The flammability characterization and synergistic flame retardant mechanism of the core/shell flame retardant (CFR) in ethylene-vinyl acetate (EVA) blends had been compared with EVA/physical mixture (PM, with the given proportion of brucite and dodecylamine polyphosphate as well as CFR) and EVA/brucite blends. With the same loading amount (40 wt%) of fillers in EVA, the peak heat release rate and smoke production rate of EVA/CFR blends were significantly reduced to 49% and 48% of that of EVA/PM blends, respectively. Meanwhile, the limiting oxygen index (LOI) was increased up to 32 (14.3% higher than that of EVA/PM blends) and the UL-94 test could achieve the V-0 rating. These remarkable properties were obtained just by nanoengineeing the core/shell structured brucite@polyphosphate@amine hybrid system, facilitating the formation of intact and compact residue with fence structure in process of polymer composite burning.
Co-reporter:Junwei Ye, Lifeng Xu, Yuan Gao, Huan Wang, Yunzhe Ding, Dai Deng, Weitao Gong, Guiling Ning
Synthetic Metals 2013 Volume 175() pp:170-173
Publication Date(Web):1 July 2013
DOI:10.1016/j.synthmet.2013.04.014
•The uniform microrods, microspikes and monodispersed microspheres of PMPCP were prepared.•The morphology evolution of PMPCP aggregates is concerned with the type of solvents of PMPCP solution.•Changes in shape observed of PMPCP aggregates are accompanied by changes in luminescent property.The uniform microrods, microspikes, and monodispersed microspheres of 1,2-diphenyl-4-(4-methoxyphenyl)-1,3-cyclopentadiene (PMPCP) were prepared by a facile solvent evaporation method. The effect of reaction conditions on the morphology evolution of PMPCP aggregates was investigated. It is believed that the different nucleation and growth processes in different solvents should be responsible for the formation of different microstructures. The photoluminescence properties of these particles were also investigated.Morphology evolution of 1,2-diphenyl-4-(4-methoxyphenyl)-1,3-cyclopentadiene (PMPCP) aggregates from microrods to monodispersed microspheres was explored by adjusting the type of solvents of PMPCP solution. These microparticles exhibit the different luminescence properties compared to each other.
Co-reporter:Junwei Ye, Wei Li, Limei Zhao, Hongri Li, Weitao Gong, Yuan Lin, Guiling Ning
Inorganic Chemistry Communications 2013 Volume 32() pp:51-54
Publication Date(Web):June 2013
DOI:10.1016/j.inoche.2013.03.021
•A 3-D ytterbium MOF was synthesized under hydrothermal condition.•Three independent Yb(III) atoms exhibit different coordination environments.•There are two different types of rod-shaped molecular building blocks in compound.•The one of rod-shaped MBB is composed of [YbO6] and [YbO6N2] polyhedrons.•The other of rod-shaped MBB is formed from [YbO7] polyhedrons.A novel 3-D ytterbium metal–organic framework, [Yb4(AIP)6(2,2′-bipy)]n (1) has been synthesized by self-assembly of Yb(III) ions, 5-aminoisophthalic acid (H2AIP) and 2,2′-bipyridine (2,2′-bipy) under hydrothermal condition and characterized by elemental analysis, infrared spectroscopy, powder X-ray diffraction and single-crystal X-ray diffraction analysis. In compound 1, three crystallographically independent Yb(III) atoms adopt totally different coordination environments and are connected to each other by carboxylate groups to form two different kinds of rods: [(YbO6)(OCO)3(YbO6N2)]n and [(YbO7)(OCO)3(YbO7)]n, respectively. These rod-shaped molecular building blocks alternately are linked to each other through AIP ligands to form a 3-D framework with pcu-type rod packing arrangement. The thermal property and luminescent property of 1 have been investigated in the solid state.A new ytterbium metal–organic framework, [Yb4(AIP)6(2,2′-bipy)]n has been synthesized through a hydrothermal reaction of Yb(III) ions and 5-aminoisophthalic acid (H2AIP) and 2,2′-bipyridine (2,2′-bipy). The compound features 3-D framework with pcu-type packing arrangement based on two different types of rod-shaped molecular building blocks.
Co-reporter:Lijian Yang, Junwei Ye, Yuan Gao, Dai Deng, Weitao Gong, Yuan Lin, Guiling Ning
Tetrahedron Letters 2013 Volume 54(Issue 23) pp:2967-2971
Publication Date(Web):5 June 2013
DOI:10.1016/j.tetlet.2013.03.113
A series of α-free pyrylium perchlorates were prepared by one-pot oxidation of substituted cyclopentadiene derivatives in the presence of perchloric acid. A tunable fluorescence with green to red emission in dichloromethane and green to orange emission in the solid state can be achieved by changing the aryl groups on 2- or 4-position of pyrylium ring. Furthermore, single crystal structures and quantum chemistry calculation were conducted to understand the relationship between structures and optical properties.
Co-reporter:Weitao Gong, Di Wu, Zhen Cheng, Hongchang Pang, Yuan Lin, Guiling Ning
Materials Research Bulletin 2013 48(3) pp: 1333-1337
Publication Date(Web):
DOI:10.1016/j.materresbull.2012.12.033
Co-reporter:Wei-Tao Gong, Qing-Lan Zhang, Li Shang, Bei Gao, Gui-Ling Ning
Sensors and Actuators B: Chemical 2013 177() pp: 322-326
Publication Date(Web):
DOI:10.1016/j.snb.2012.11.009
Co-reporter:Xinyi Lu, Junwei Ye, Wei Li, Weitao Gong, Lijian Yang, Yuan Lin and Guiling Ning
CrystEngComm 2012 vol. 14(Issue 4) pp:1337-1344
Publication Date(Web):02 Dec 2011
DOI:10.1039/C1CE06268A
A series of cadmium(II) and zinc(II) metal–organic frameworks, [Cd(NIPH)(2-apy)(H2O)·(H2O)] (1), [Cd(NIPH)(4-apy)2(H2O)] (2), [Zn2(NIPH)2(μ3-OH)(H2O)·(2-Hapy)] (3), [Zn5(NIPH)4(μ3-OH)2(μ2-OH)(H2O)·(3-Hapy)] (4), and [Zn5(NIPH)4(μ3-OH)2(μ2-OH)(H2O)·(4-Hapy)·(H2O)] (5), were synthesized by hydrothermal reactions of the corresponding Cd(II) and Zn(II) salts with 5-nitroisophthalic acid (H2NIPH) in the presence of aminopyridine (apy) auxiliary ligands. These frameworks exhibit three typical structural features: 1 and 2 possess a 1-D double-stranded loop-like chain and a 1-D linear chain formed by [Cd2N2O10] dinuclear building blocks and [CdN2O5] monoclear building blocks, respectively; 3 is a 2-D anionic framework consisting of [Zn4O16] tetranuclear building blocks; both 4 and 5 are 3-D anionic frameworks constructed by both [Zn4O16] tetranuclear and [Zn6O22] hexanuclear building blocks. The apy ligands participate in constructing frameworks of 1 and 2, but are protonated in the channels of 3–5 as charge-balancing and space-filing agents. The thermal stability, luminescent properties and ion-exchange behavior of the complexes were investigated.
Co-reporter:Jingjie Yu, Weitao Gong, Zhiguo Xiao, Guiling Ning
Journal of Luminescence 2012 Volume 132(Issue 11) pp:2957-2960
Publication Date(Web):November 2012
DOI:10.1016/j.jlumin.2012.06.010
The new apatite–silicate phosphor doped with Eu ions in Ba10(PO4)4(SiO4)2 matrix was synthesized through solid-state reaction. It was found that the as-synthesized phosphor displayed apparent mixture of band and line emission peaks giving rise to pseudo white light. The narrow emission bands peaking at 410 nm can be assigned to the 4f65d→4f7(8S7/2) transition of Eu2+ ions, and the other band at 507 nm is ascribed to anomalous fluorescent emission. One group of line emission peaking at 595 nm and 613 m were due to the 5D0→7F1 and 5D0→7F2 transition of Eu3+ ions. The occurrence of photostimulated luminescence and discrete emission lines in violet (410 nm), green (507 nm) and red (595 nm and 613 nm) colors indicate that this material has potential application in fields of white-light-emitting.Highlights► We studied Ba10(PO4)4(SiO4)2:Eu2+ whose emission spectra are composed of a broad band and one group of line emission peaks. ► The phosphor emission at 507 nm is ascribed to anomalous fluorescent emission. ► The line emission peaks at 595 nm and 613 m were due to 5D0→7F1 and 5D0→7F2 transition of Eu3+. ► The phosphor emits pseudo white light under irradiation with UV light.
Co-reporter:Wendan Chen, Weitao Gong, Junwei Ye, Yuan Lin and Guiling Ning
RSC Advances 2012 vol. 2(Issue 3) pp:809-811
Publication Date(Web):05 Dec 2011
DOI:10.1039/C1RA00722J
A new low molecular-weight gelator G1 having hydrozone and azobenzene groups was designed and synthesized. The corresponding organogel from G1 exhibited multistimuli responsive capability by tuning the hydrogen-bonding and amphiphilic properties.
Co-reporter:Peng Tian, Junwei Ye, Guiling Ning, Weitao Gong, Nuo Xu, Qiushuang Zhang and Yuan Lin
RSC Advances 2012 vol. 2(Issue 27) pp:10217-10221
Publication Date(Web):14 Sep 2012
DOI:10.1039/C2RA21829A
NiO hierarchical structure was synthesized via a facile template-engaged solvothermal reaction of Mg5(CO3)4(OH)2·4H2O and Ni(NO3)2·6H2O, followed by annealing Ni-base precursor at high temperature in air. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and N2 adsorption-desorption. It has been demonstrated that the NiO hierarchical structure retains the morphology of the template, and possesses a high surface area (over 58 m2 g−1). Moreover, the growth mechanism of Ni-base precursor has been proposed. The porous hierarchical NiO exhibited good adsorption for the removal of organic dye pollutants from water. Thus, the porous hierarchical NiO is expected to find promising applications in catalysis, energy storage and sensors.
Co-reporter:Lijian Yang, Junwei Ye, Lifeng Xu, Xinyu Yang, Weitao Gong, Yuan Lin and Guiling Ning
RSC Advances 2012 vol. 2(Issue 30) pp:11529-11535
Publication Date(Web):01 Oct 2012
DOI:10.1039/C2RA21622A
A series of triarylcyclopentadiene derivatives were synthesized and their crystal structures and photoluminescence properties in solution and aggregation state were studied. Their maximum fluorescence emission wavelengths were 452–483 nm. Four of them have weak emission in solution but intense emission when aggregated in water/acetonitrile mixture or in crystals showing a typical aggregation-induced emission enhancement (AIEE). The crystal structure analysis reveals that the aromatic C–H⋯π interactions are the origin of the AIEE. Additionally, DFT calculations, and the thermal and electrochemical properties of these compounds were investigated.
Co-reporter:Junwei Ye, Qianqian Wang, Hongze Gao, Xinyi Lu, Weitao Gong, Yuan Lin, Guiling Ning
Inorganica Chimica Acta 2012 Volume 384() pp:1-7
Publication Date(Web):1 April 2012
DOI:10.1016/j.ica.2011.11.028
A series of lanthanide complexes [Ln2(QUIN)6(H2O)6]·3H2O (Ln = Pr (1), Nd (2), Sm (3), Eu (4)), [Pr(QUIN)3(H2O)]n (5) and [Pr2(QUIN)4(phen)2(NO3)2(H2O)2] (6) were synthesized by hydrothermal reactions of corresponding lanthanide nitrates with quinoline-2-carboxylic acid (HQUIN) under intervention of auxiliary ligands, and characterized by elemental analysis, IR, TGA and single-crystal X-ray diffraction. Complexes 1–4 and 6 exhibit the dinuclear lanthanide architectures in which each Ln(III) ion is nine-coordinated and possesses distorted tricapped trigonal prism geometry. The dinuclear structures in 1–4 are further linked by the hydrogen bond interactions resulting in the formation of the two-dimensional supramolecular network, while the dinuclear structures in 6 form the three-dimensional supramolecular network. Complex 5 is composed of one-dimensional chain framework, which further pack into the two-dimensional layer through weak π⋯π stacking interactions. The supramolecular architectures 1–6 show that the numerous hydrogen bonds are responsible for the increasing thermal stability. Photoluminescence investigation reveals that complexes 4 and 6 display strong red and green emission, respectively. Moreover, the magnetic properties of 2 and 6 have also been investigated.Graphical abstractA series of lanthanide complexes were synthesized through the combination of Ln(III) ions with quinoline-2-carboxylic acid under auxiliary ligand intervention. Photoluminescent and magnetic properties of these compounds have been investigated.Highlights► Complexes 1–6 were synthesized through the combination of Ln(III) ions with quinoline-2-carboxylic acid under auxiliary ligand intervention. ► Complexes 1–4 and 6 exhibit the dinuclear structures, and 5 is composed of one-dimensional chain framework. ► 4 and 6 display strong red and green emission, respectively.
Co-reporter:Rui Wang, Junwei Ye, Guiling Ning, Heng Jiang, Weilei Zhou, Fuhong Sun
Materials Letters 2012 Volume 83() pp:130-132
Publication Date(Web):15 September 2012
DOI:10.1016/j.matlet.2012.06.009
Titanium pyrophosphate (TiP2O7) nanocrystals are synthesized using a facile microwave (MW) heating method, in which titanium hydroxide (TH) and H3PO4 (85%) are used as Ti and P sources without surfactant or template assistance. X-ray diffraction results suggest that pure cubic-structured TiP2O7 could be obtained via MW irradiation at 800 W for 5 min. Scanning electron microscope and transmission electron microscope photographs show that the grain sizes of the samples range from 20 nm to 100 nm and vary with the irradiation time. The effects of different sample preparation conditions on the experimental result are also discussed. The band gap energy of as-synthesized TiP2O7 is determined to be 3.8 eV by UV diffuse reflectance spectral analysis. Luminescence spectral analysis shows that nanocrystal TiP2O7 shows white-light emission at 300 nm.Highlights► TiP2O7 is synthesized by microwave heating method for the first time. ► TiP2O7 nanoparticles with 20–100 nm grains in size are obtained within 5 min. ► As-prepared TiP2O7 shows pure cubic phase structure. ► A facile, fast and green route for synthesis of TiP2O7 nanocrystals is developed.
Co-reporter:Nuo Xu, Junwei Ye, Yunbang Tang, Changzhong Man, Guolong He, He Ye, Guiling Ning
Materials Letters 2012 Volume 82() pp:199-201
Publication Date(Web):1 September 2012
DOI:10.1016/j.matlet.2012.05.062
Various morphologies of CeO2 micro/nanostructures such as sphere, rod and cluster have been successfully synthesized by thermal conversion of cerium carbonate hydroxide (CeOHCO3) precursors which were prepared by a hydrolysis process followed by solvothermal growth without using any template or surfactant. The synthesizing mechanism and the morphological evolution of CeOHCO3 and CeO2 were proposed. It was found that the base reactant concentration and the composition of the solvent mixture were the critic factors in determining the shape and size of CeOHCO3 precursors. The shape and size of the CeO2 could be controlled easily by adjusting the concentration and the variety of solvent. The as-prepared CeO2 might have potential applications in phosphor and catalysis materials.Graphic abstractVarious morphologies of CeO2 micro/nanostructures such as sphere, rod and cluster have been successfully synthesized by thermal conversion of cerium carbonate hydroxide (CeOHCO3) precursors which were prepared by a hydrolysis process followed by solvothermal growth without using any template or surfactant.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A facile solvent-assisted method to control the morphology of CeO2. ► CeO2 micro/nanostructures with sphere, rod and cluster shapes have been synthesized. ► The solvent was the critic factor in determining the shape and size of products.
Co-reporter:Bei Gao, Wei-Tao Gong, Qing-Lan Zhang, Jun-Wei Ye, Gui-Ling Ning
Sensors and Actuators B: Chemical 2012 Volume 162(Issue 1) pp:391-395
Publication Date(Web):20 February 2012
DOI:10.1016/j.snb.2011.12.060
A simple 7-hydroxycoumarin-based compound L1 was rationally designed and synthesized behaving as a highly selective fluorescent sensor for Hg2+ in aqueous media. It shows selective and “turn-on” fluorescence upon addition of Hg2+. Fluorescence titration and 1H NMR investigation reveal that the fluorescence enhancement of L1 upon Hg2+ addition is promoted by Hg2+-induced cyclization of L1 to a more rigid dihydrobenzofuran derivative.
Co-reporter:Hongchang Pang, Guiling Ning, Weitao Gong, Junwei Ye and Yuan Lin
Chemical Communications 2011 vol. 47(Issue 22) pp:6317-6319
Publication Date(Web):21 Apr 2011
DOI:10.1039/C1CC10279F
A facile, dissolution-free route to direct synthesis of hexagonal magnesium hydroxide nanoplates from natural brucite is reported. Stable brucite undergoes disaggregation into thin nanosheets and subsequent solid–solid transformation in the presence of p-toluene sulfonate, circumventing the threshold of size effect from bulk brucite to Mg(OH)2 nanoplates.
Co-reporter:Peng Tian, Junwei Ye, Nuo Xu, Weitao Gong, Qiushuang Zhang, Yuan Lin and Guiling Ning
Chemical Communications 2011 vol. 47(Issue 43) pp:12008-12010
Publication Date(Web):30 Sep 2011
DOI:10.1039/C1CC15186J
A facile strategy by using magnesium carbonate as the recyclable template has been developed to synthesize a variety of uniform inorganic hollow structures whose composition, size and shape can be readily modulated to generate interesting structures such as TiO2, Al2O3, SiO2, Gd2O3 and NiO microtubes and TiO2, SiO2 hollow microboxes.
Co-reporter:Xiangdong Zhang, Junwei Ye, Suning Wang, Weitao Gong, Yuan Lin, and Guiling Ning
Organic Letters 2011 Volume 13(Issue 14) pp:3608-3611
Publication Date(Web):June 17, 2011
DOI:10.1021/ol201207b
A straightforward route for the preparation of decatetraene diketone derivates is presented. The synthesis has been accomplished by a one-step procedure starting from phenyl-substituted pyrylium perchlorates, and an elaborate heterocyclic α-radical mechanism was proposed. This class of molecules displays a crystallization induced emission enhancement property.
Co-reporter:Hongchang Pang, Guiling Ning, Weitao Gong, Junwei Ye and Yuan Lin
RSC Advances 2011 vol. 1(Issue 2) pp:184-186
Publication Date(Web):02 Aug 2011
DOI:10.1039/C1RA00055A
We design an unconventional strategy for controlling the nanostructure evolution of magnesium hydroxide from lamellar to rose-like, then to torispherical species by introducing diverse valent cations (Zn2+, Al3+, Sn4+). Lattice distortion induced by invasive cations would be responsible for the morphology transformation of metal hydroxide.
Co-reporter:Hongchang Pang, Guiling Ning, Weitao Gong, Junwei Ye, Yuan Lin and Xinai Pan
New Journal of Chemistry 2011 vol. 35(Issue 7) pp:1449-1452
Publication Date(Web):20 Apr 2011
DOI:10.1039/C1NJ20118B
Two novel hierarchical architectures, flower-like and urchin-like MgBO2(OH), were facilely fabricated through a hydrothermal process, in the absence of any surfactant or template. Mg3B2O6 can be obtained by thermal decomposition of the MgBO2(OH) precursor with the morphology well-retained. These unique Mg3B2O6 assemblies were composed of uniform nanosheets and nanobelts, respectively. Under UV excitation, Eu3+-doped Mg3B2O6 shows a strong red emission corresponding to 5D0 → 7FJ (J = 1,2,3) transition of Eu3+. Interestingly, variable architectures of Mg3B2O6:Eu3+ from flower-like to urchin-like displayed tunable emission from 592 nm (5D0 → 7F1) to 611 nm (5D0 → 7F2) through the altering of symmetry of the crystal field around Eu3+ ions. The present architectures are envisaged to be potential candidates for fluorescent lamps and field emission displays.
Co-reporter:Xin Li, Junwei Ye, Yuan Lin, Leilei Fan, Hongchang Pang, Weitao Gong, Guiling Ning
Powder Technology 2011 Volume 206(Issue 3) pp:358-361
Publication Date(Web):30 January 2011
DOI:10.1016/j.powtec.2010.10.001
The regular and well-dispersed NaAl(OH)2CO3 whiskers were successfully synthesized via facile hydrothermal route using aluminium isopropoxide and NaHCO3. The effects of reactants and reaction temperature on the structure and morphology of NaAl(OH)2CO3 whiskers have been investigated. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and thermo-gravimetric analysis (TGA) were employed to characterize the synthesized samples. Most NaAl(OH)2CO3 whiskers possess an average diameter of about 500 nm and lengths ranging from 10 to 30 μm. NaAl(OH)2CO3 whiskers exhibit excellent flame retardant performance and mechanical strength in poly(ethylene-co-vinyl acetate) matrix (EVA).The regular and well-dispersed NaAl(OH)2CO3 whiskers were successfully synthesized by facile hydrothermal method using aluminium isopropoxide and NaHCO3·NaAl(OH)2CO3 whiskers exhibit better flame retardant performance and mechanical strength in poly (ethylene-co-vinyl acetate) matrix (EVA).
Co-reporter:Qianqian Wang, Junwei Ye, Ge Tian, Yan Chen, Xinyi Lu, Weitao Gong, Guiling Ning
Inorganic Chemistry Communications 2011 Volume 14(Issue 6) pp:889-892
Publication Date(Web):June 2011
DOI:10.1016/j.inoche.2011.03.020
Co-reporter:Shuang Bao;Wei-tao Gong;Wen-dan Chen
Journal of Inclusion Phenomena and Macrocyclic Chemistry 2011 Volume 70( Issue 1-2) pp:115-119
Publication Date(Web):2011 June
DOI:10.1007/s10847-010-9869-2
A new tripodal receptor for anion sensing based on amide-pyridinium as recognition site and nitro-benzene as signaling unit was designed and successfully synthesized. This receptor showed high selectivity and strong binding affinity toward AcO− over the investigated anions, especially over H2PO4−. Addition of AcO− induced clear color change of solution from colorless to yellow, realizing the “naked-eye” detection. UV–Vis and 1H NMR experiments indicated the selectivity might origin from the synergistic effects arising from hydrogen bonding, electrostatic interactions and conformational change.
Co-reporter:Junwei Ye, Li Zhou, Fengjuan Liu, Ji Qi, Weitao Gong, Yuan Lin, Guiling Ning
Journal of Alloys and Compounds 2010 Volume 504(Issue 2) pp:503-507
Publication Date(Web):20 August 2010
DOI:10.1016/j.jallcom.2010.05.152
Thermochromic tungsten-doped vanadium dioxide (VO2) powders were successfully synthesized by thermal reduction using V2O5 as a vanadium precursor. The products were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). The results indicated that W was successfully doped into the crystal lattice of VO2 matrix, and prepared tungsten-doped VO2 had a rod-like morphology. The effects of reducing temperature and annealing temperature on the crystallographic structures were also discussed. The phase transition temperature (Tt) of VO2 could be simply tuned by changing the doping concentration of tungsten. When the doping concentration was 1.58 mol%, the Tt could be reduced to 37.8 °C from initial 69.5 °C, suggesting that tungsten-doped VO2 possesses prominent thermochromic properties and optical switching characters. It has shown that this convenient and efficient approach could be applied in the mass-production of functional powders materials.
Co-reporter:Tao Xu, Wei-tao Gong, Jun-wei Ye, Yuan Lin, and Gui-ling Ning
Organometallics 2010 Volume 29(Issue 24) pp:6744-6748
Publication Date(Web):November 19, 2010
DOI:10.1021/om100872f
The ring transformation of the α-reactive 2,4,5-triphenylpyrylium salt 1 with η3-phosphines to the aryl- and alkylphosphonium triphenylcyclopentadienylides 5 is reported. The mechanism of this unprecedented transformation might involve tandem conjugate addition and intramolecular Wittig cyclization.
Co-reporter:Wen Pan, Guiling Ning, Jing Wang, Yuan Lin, Junwei Ye
Journal of Luminescence 2009 Volume 129(Issue 5) pp:584
Publication Date(Web):May 2009
DOI:10.1016/j.jlumin.2008.12.001
Co-reporter:Dong Xie, Junwei Ye, Zhao Liu, Xiangdong Zhang, Hao Meng, Yuan Lin, Guiling Ning
Inorganic Chemistry Communications 2009 Volume 12(Issue 2) pp:72-75
Publication Date(Web):February 2009
DOI:10.1016/j.inoche.2008.11.008
A novel cadmium(II) coordination polymer, [Cd2(pzdc)2(4,4′-bpy)2]·4H2O (1) (H2pzdc = pyrazine-2,3-dicarboxylic acid; 4,4′-bpy = 4,4′-bipyridine), has been synthesized by hydrothermal reaction of Cd(OAC)2, H2pzdc and 4,4′-bpy. Single-crystal X-ray diffraction analysis reveals that 1 constructed from dinuclear building blocks has a three-dimensional (3-D) structure with rob topology. Fluorescent measurement of 1 exhibits strong blue-green emission in the solid state at room temperature, and its framework possess remarkable thermal stability.A novel cadmium(II) coordination polymer, [Cd2(pzdc)2(4,4′-bpy)2] · 4H2O (1) has been synthesized by hydrothermal reaction of Cd(OAC)2, H2pzdc and 4,4′-bpy. 1 constructed from dinuclear building blocks has a three-dimensional (3-D) structure with rob topology. Fluorescent measurement of 1 exhibits strong blue-green emission in the solid state at room temperature, and its framework possess remarkable thermal stability.
Co-reporter:Liyan Na;Ruinian Hua;Liying Zhang;Wei Zhang
Journal of Chemical Crystallography 2009 Volume 39( Issue 9) pp:688-691
Publication Date(Web):2009 September
DOI:10.1007/s10870-009-9580-6
A three-dimensional lanthanide metal-organic coordination polymer Yb3(BDC)4.5(DMF)2(H2O)3 · (DMF)2 has been synthesized by the reaction of the lanthanide metal ion (Yb3+) with 1,4-benzenedicarboxylic acid (H2BDC) under mild condition. The compound crystallizes in the triclinic system, space group PI with unit cell parameters a = 10.7428(9) Å, b = 11.2786(9) Å, c = 26.172(2) Å, α = 85.060(2)°, β = 88.1060(10)°, γ = 62.3670(10)°, V = 2798.9 (4) Å3, Z = 2. The crystal structure exhibits one-dimensional channels along the [011] direction. The fluorescent results showed that there were two emission peaks at 375 and 420 nm when the compound was excited by a 235 nm excitation.
Co-reporter:Hongyu Liu, Guiling Ning, Zhihong Gan, Yuan Lin
Materials Research Bulletin 2009 44(4) pp: 785-788
Publication Date(Web):
DOI:10.1016/j.materresbull.2008.09.018
Co-reporter:Wen Pan, Junwei Ye, Guiling Ning, Yuan Lin, Jing Wang
Materials Research Bulletin 2009 44(2) pp: 280-283
Publication Date(Web):
DOI:10.1016/j.materresbull.2008.06.006
Co-reporter:Junwei Ye, Jingying Zhang, Ling Ye, Dong Xie, Tao Xu, Gang Li and Guiling Ning
Dalton Transactions 2008 (Issue 39) pp:5342-5349
Publication Date(Web):19 Aug 2008
DOI:10.1039/B806502K
The hydrothermal reaction of La(III), Cu(II) and 5-nitroisophthalic acid (H2NIPH) at different temperatures produced four novel coordination polymers, [LaCu(NIPH)(ONIPH)(H2O)4]·H2O (1), [La2Cu(NIPH)4(H2O)6] (2), [La2Cu(NIPH)4(H2O)2] (3) and [LaCu(NIPH)2(HNIPH)(H2O)2]·2H2O (4), (HONIPH = 2-hydroxy-5-nitroisophthalate), these 2D and 3D frameworks are the first La(III)–Cu(II) heterometallic frameworks based on infinite rod-shaped molecular building blocks. In 1, a 2D layer is composed of infinite La–O–C–O–Cu rods consisting of alternating [La2O14(CO2)2] and [Cu2O8] units by corner sharing. The 3D frameworks of 2–4 are constructed from different rod-shaped molecular building blocks, which are linked by NIPH ligands to form a pcu-type rod packing arrangement. Interestingly, HONIPH came from the in situhydroxylation of H2NIPH in the hydrothermal reaction.
Co-reporter:Wen Pan, Guiling Ning, Xu Zhang, Jing Wang, Yuan Lin, Junwei Ye
Journal of Luminescence 2008 Volume 128(Issue 12) pp:1975-1979
Publication Date(Web):December 2008
DOI:10.1016/j.jlumin.2008.06.009
Sr2MgSi2O7:Eu2+, Dy3+ phosphors were prepared by the (aminopropyl)-triethoxysilane (APTES) co-precipitation method. Effects of synthesis temperature on the crystal characteristics, luminescent properties and afterglow performance of Sr2MgSi2O7:Eu2+, Dy3+ phosphors have been discussed in detail and compared with the corresponding commercial product. The experimental results indicated that the sample could be synthesized at a relatively lower temperature and had better performance on the above-mentioned properties using the co-precipitation method.
Co-reporter:Hongyu Liu, Guiling Ning, Zhihong Gan, Yuan Lin
Materials Letters 2008 Volume 62(10–11) pp:1685-1688
Publication Date(Web):15 April 2008
DOI:10.1016/j.matlet.2007.09.059
Unaggregated spherical α-alumina powder was prepared by the controlled hydrolysis of Al(OPri)3 in a dilute solution consisting of CH3(CH2)6CH2OH and CH3CN. Spherical AlOOH precursors crystallized to γ-alumina at 1000 °C and converted to α-alumina at 1150 °C without intermediate phases. The particle morphology was retained after crystallization to α-alumina. The thermal behavior of spherical AlOOH precursors was characterized by differential thermal analysis (DTA). X-ray diffraction (XRD) was used to confirm the conversion of crystalline phase of alumina powder from amorphous to α-phase. Transmission electron microscopy (TEM) was used to investigate the morphologies and size of the precursors and products. The specific surface areas of α-alumina were measured by nitrogen adsorption technique.
Co-reporter:Jian Wang, Guiling Ning, Yuan Lin
Materials Letters 2008 Volume 62(Issue 16) pp:2447-2449
Publication Date(Web):15 June 2008
DOI:10.1016/j.matlet.2007.12.017
The Al18B4O33 whiskers were successfully synthesized by a combustion method with urea as fuel. The synthesis parameter φ ([urea]:[precursors] = φ) was studied to optimize the synthesis conditions for preparing high-quality Al18B4O33 whiskers. In our present work, it was found that a urea–precursors ratio close to 2, calcination temperature of 1050 °C and reaction time around 3 h lead to high-quality Al18B4O33 whiskers.
Co-reporter:Jian Wang, Guiling Ning, Xuefeng Yang, Zhihong Gan, Hongyu Liu, Yuan Lin
Materials Letters 2008 Volume 62(8–9) pp:1208-1211
Publication Date(Web):31 March 2008
DOI:10.1016/j.matlet.2007.08.013
The Al4B2O9/Al18B4O33 whiskers were synthesized by a facile route based on the calcination of amorphous aluminum borate, which are prepared by the homogeneous precipitation reaction between aluminum isopropoxide and H3BO3 isopropyl alcohol solution. The structure and morphology were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results indicate that both whiskers with the identical morphology exhibit a well-crystallized structure with an average diameter distribution about 400 nm and lengths ranging from 3 to 5 μm. The growing process of Al4B2O9/Al18B4O33 whiskers has been studied by thermo-gravimetric and simultaneous differential thermal analysis (TG/DTA).
Co-reporter:Jinghui Wang, Guiling Ning, Wen Pan, Xuefeng Yang, Yuan Lin
Materials Science and Engineering: B 2008 Volume 147(Issue 1) pp:43-46
Publication Date(Web):25 January 2008
DOI:10.1016/j.mseb.2007.10.015
A homogeneous and stoichiometric BaMgAl10O17:Eu2+ (BAM) phosphor has been prepared by a simple nano-coating process. TEM, SEM, XRD and spectrofluorimeter were used to monitor the structure evolution and optical properties of the phosphor. While TEM/SEM image of the precursor disclosed a spherical core–shell morphology, X-ray diffraction (XRD) of the BAM powder displayed a pure BaMgAl10O17 pattern after annealing at 1300 °C for 3 h. The luminescence intensity of the nano-coating-derived phosphors is much higher in comparison with that of the solid-state-derived phosphors.
Co-reporter:Liyan Na;Guiling Ning;Fengjie Zhang;Bing Wang
Frontiers of Chemistry in China 2008 Volume 3( Issue 1) pp:23-26
Publication Date(Web):2008 January
DOI:10.1007/s11458-008-0015-2
The preparation, X-ray structure and magnetic properties are presented for a new mixed-valence tetranuclear manganese complex that functions as a single-molecule magnet (SMM): [Mn4(CF3COO)4(hmp)6], where hmp− is the anion of 2-(hydroxymethyl) pyridine and is a N,O bidentate chelate. The compound crystallizes in a monoclinic system, space group P21/c (No. 14) with unit cell parameters a = 13.663(3) Å, b = 14.705(3) Å, c = 14.734(3) Å, β = 98.51(3)°, V = 2927.6 Å3 and Z = 2. The structure of the complex shows a novel coordination of the trifluoroacetate (TFA) anions, with one anion acting as a monodentate ligand while the second one coordinating through both oxygens to the same Mn center. Direct current magnetic susceptibility measurement in the 2–300 K temperature range supports a high-spin ground state. The presence of a frequency-dependent alternating current susceptibility signal indicates that the individual molecule is acting as magnet.
Co-reporter:Zhihong Gan, Guiling Ning, Yuan Lin, Yu Cong
Materials Letters 2007 Volume 61(Issue 17) pp:3758-3761
Publication Date(Web):July 2007
DOI:10.1016/j.matlet.2006.12.029
Mesoporous alumina nanostructures with tunable morphologies have been synthesized using different solvents through the template-free solvothermal approach. Powder X-ray diffraction (XRD), transmission electron microscopy (TEM), selected-area electron diffraction (SAED), and nitrogen adsorption/desorption were used to characterize the samples. By manipulating the volume ratio and the composition of the reaction solvent, various morphologies of mesoporous alumina with crystalline-framework walls, i.e. nanotubes, nanofibers, nanorods, nanolaths, and nanosheets were synthesized. The specific surface area and the pore size correlated with the morphologies of γ-alumina nanocrystals. In comparison with conventional surfactant-templating methods, the new approach is simple and more suitable for industrial scale production.
Co-reporter:Xuefeng Yang, Guiling Ning, Xin Li, Yuan Lin
Materials Letters 2007 Volume 61(Issue 25) pp:4694-4696
Publication Date(Web):October 2007
DOI:10.1016/j.matlet.2007.03.011
A novel phosphor, Eu3+-doped γ-LiAlO2, was successfully prepared by a facile sol–gel process. The synthesis, characterization and luminescence properties of the phosphor were detailed investigated. Based on powder X-ray diffraction and scanning electron microscopy results, pure phase tetragonal LiAlO2 was obtained by sol–gel process at 800 °C and the sphere-like particles have the diameter of 1 μm and suffer from little aggregation. Luminescence test indicated that the γ-LiAlO2:Eu3+ phosphor exhibited an intense characteristic luminescence of Eu3+ ions, and the luminescence intensity of samples enhanced with the Eu/Li molar ratio increasing from 0.005 to 0.1.
Co-reporter:Wen Pan;Gui-Ling Ning;Jing-Hui Wang;Yuan Lin
Chinese Journal of Chemistry 2007 Volume 25(Issue 5) pp:
Publication Date(Web):11 MAY 2007
DOI:10.1002/cjoc.200790113
A novel method for synthesizing long afterglow silicate phosphor Sr3MgSi2O8:Eu2+,Dy3+using TEOS and inorganic powders as reactants was reported. Acetic acid as a catalyzer controlled the hydrolysis of TEOS by adjusting pH value of the system. The morphologies of precursor were characterized by transmission electron microscope (TEM). The structure and optical properties of the phosphor powders were systematically investigated by means of X-ray diffraction and spectrofluorometry. TEM images have reflected the core-shell structure and quasi-spherical morphology of the precursor particles. It was found that the single-phase Sr3MgSi2O8 crystalline structures were obtained at 1050 and 1250 °C for the samples prepared with the nano-coating method and the solid state reaction, respectively. The emission intensities of the phosphors prepared by the present method were higher than those by the conventional process. Also, the afterglow characteristic was better than that prepared by solid-state reaction in the comparable condition.
Co-reporter:Wen Pan, Guiling Ning
Sensors and Actuators A: Physical 2007 Volume 139(1–2) pp:318-322
Publication Date(Web):12 September 2007
DOI:10.1016/j.sna.2006.12.021
This paper report a novel method for synthesizing long afterglow silicate phosphor Sr3MgSi2O8:Eu2+,Dy3+ using TEOS and inorganic powders as reactants. Acetic acid as a catalyzer controlled the hydrolysis of TEOS by adjusting pH value of the system. The morphologies of precursor were characterized by transmission electron microscope (TEM). The structure and optical properties of the phosphor powders were systematically investigated by means of X-ray diffraction and spectrofluorometer. TEM images had reflected the core-shell structure and quasi-spherical morphology of the precursor particles. It found that the single-phase Sr3MgSi2O8 crystalline structures were obtained at 1050 and 1250 °C for the samples prepared with the nano-coating method and the solid-state reaction, respectively. The emission intensities were higher by the present method. Also, the afterglow characteristic was better than that prepared by solid-state reaction in the comparable condition.
Co-reporter:Jiang Yanyan;Li Jinggang;Sui Xiaotao
Journal of Sol-Gel Science and Technology 2007 Volume 42( Issue 1) pp:41-45
Publication Date(Web):2007 April
DOI:10.1007/s10971-006-1525-3
Nanocrystalline spinel CuAl2O4 powders were prepared by sol-gel method from nitrate Cu(NO3)2·3H2O, Al(NO3)3·9H2O and complex C6H8O7·H2O. Sintering was carried out at 400, 500, 600, 700, 800°C respectively for 2 h in air. The XRD patterns started to appear CuAl2O4 peaks after sintering of 500°C and consist of only CuAl2O4 peaks as spinel crystal after sintering of 700°C. The powders were analyzed by TEM and UV-vis diffuse reflectance spectrum to be round, about 10–30 nm in size and Eg=1.77 eV. Photodegradation property of nanocrystalline CuAl2O4 powders was investigated by using methyl orange as model pollutant and mercury lamp (λ>400 nm) as energy source. The results indicated that CuAl2O4 powders sintered at 700°C had the excellent visible photocatalytic property. Under the irradiation of visible light, methyl orange could be degraded 97% in 120 min.
Co-reporter:Gui Ling Ning, Xin Cheng Li, Wei Tao Gong, Megumu Munakata, Masahiko Maekawa
Inorganica Chimica Acta 2005 Volume 358(Issue 7) pp:2355-2362
Publication Date(Web):15 April 2005
DOI:10.1016/j.ica.2005.01.009
Reactions of silver(I) perchlorate with tetraphenyl-cyclopentadiene (Ph4H2C5) have isolated two novel silver(I) bridged tetraphenyl-pyrylium complexes: [Ag(ClO4)(Ph4HC5O+)](ClO4)− (1) and [Ag(ClO4)(H2O)(Ph4HC5O+)](ClO4-) (2), depending on moisture-content of the reactants. Structure studies using single-crystal X-ray diffraction have showed that complex 1 contains a distorted tetrahedral metal center bridging two neighboring peripheral phenyl rings of one pyrylium cation and two perchlorate anions, whereas 2 involves a three-coordinate metal ion interacting with a pair of phenyl rings and one water molecule, leaving two perchlorate anions free from coordination. For both complexes, the precursor ligand Ph4H2C5 undergoes a ring-enlargement reaction, forming a six-membered pyrylium cation. The fundamentals of the synthesis, structure characterization and some properties are discussed.The reaction of silver(I) perchlorate with tetra-phenyl cyclopentadiene (Ph4H2C5) at room temperature afforded two novel silver(I) bridged tetraphenyl-pyrylium complexes depending on the moisture-content of Ph4H2C5.
Co-reporter:Megumu Munakata Dr. Dr.;Yusaku Suenaga Dr.;Takayoshi Kuroda-Sowa Dr.;Masahiko Maekawa Dr.;Tetsuhiro Ohta Dr.
Angewandte Chemie 2000 Volume 112(Issue 24) pp:
Publication Date(Web):15 DEC 2000
DOI:10.1002/1521-3757(20001215)112:24<4729::AID-ANGE4729>3.0.CO;2-9
Stark nach innen gekrümmt sind die polycyclischen Aren-Einheiten beim Argentocyclophan [Ag0.5(btp)0.5(ClO4)0.5]2 (siehe schematische Darstellung; ohne ClO4−-Ionen), während bei rein organischen Cyclophanen eine Krümmung nach außen üblich ist. Die Stapelung der aus den Ag+- und ClO4−-Ionen gebildeten Ketten entlang der c-Achse führt zu π-π-Wechselwirkungen zwischen den Aren-Einheiten und zwischen den Ketten sowie zu elektrischer Leitfähigkeit. btp=1,2-Benztriphenylen.
Co-reporter:Raji Feyisa Bogale, Yanzhen Chen, Junwei Ye, Yaoyao Yang, Abdul Rauf, Liying Duan, Peng Tian, Guiling Ning
Sensors and Actuators B: Chemical (June 2017) Volume 245() pp:
Publication Date(Web):1 June 2017
DOI:10.1016/j.snb.2017.01.177
•Two-dimensional honeycomb layered Tb (III) coordination polymer has been synthesized.•Compound 1 exhibits green emission characteristics both in solid and different organic solvents.•Compound 1 discriminates Fe3+ ion and 4-NP through quenching mechanism.•Compound 1 is highly selective and sensitive sensory material even in the presence of other interfering analytes.A luminescent terbium(III)-based coordination polymer, [Tb(BTEC)0.5(HCOO)(H2O)2] (1) has been successfully synthesized by solvothermal reaction of Tb(NO3)3·6H2O with 1,2,4,5-tetracarboxylic acid (H4BTEC) in N,N-dimethylformamide (DMF) and H2O at 160 °C. Compound 1 possesses dimeric [Tb2(BTEC)4(HCOO)2(H2O)4] building blocks which are linked by BTEC linkers to generate a two-dimentional honeycomb layer. 1 shows intense characteristic green emission in both solid state and organic solvents including acetone, ethanol, acetonitrile, benzene, dichloromethane, methanol, tetrahydrofuran, dimethyl sulfoxide and water at ambient temperature. Strong emission of 1 could be highly and selectively quenched by 4-nitropenol (4-NP) even in the coexistence of other competing nitroaromatics such as 2,4,6-trinitrophenol, 2,6-dinitrotoluene, nitrobenzene, 4-nitrotolune, 4-bromophenol, phenol, bromobenzene, and 1,2-dimethylbenzene. In addition, 1 exhibited superior selectivity and sensitivity towards Fe3+ ion over other metal ions including Al3+, Ca2+, Cd2+, Co2+, Cr3+, Cu2+, Ni2+, K+, Mg2+, Mn2+, Pd2+ and Zn2+ ions. The possible detection mechanisms have been proposed. More interestingly, the trace amounts of 4-NP and Fe3+ ions were selectively detected using visual luminescent test papers based on 1, which could further contributes a credible potential sensing application of coodination polymers for the biological and environmental concerns.A luminescent Tb(III)-based coordination polymer has been synthesized, which can serve as a visual selective sensor for the detection of 4-nitrophenol and Fe3+ ion via a fluorescence quenching mechanism.Download high-res image (144KB)Download full-size image
Co-reporter:Xinyi Lu, Junwei Ye, Yuan Sun, Raji Feyisa Bogale, Limei Zhao, Peng Tian and Guiling Ning
Dalton Transactions 2014 - vol. 43(Issue 26) pp:NaN10113-10113
Publication Date(Web):2014/04/14
DOI:10.1039/C4DT00270A
Four Ag-based coordination polymers [Ag(Bim)] (1), [Ag2(NIPH)(HBim)] (2), [Ag6(4-NPTA)(Bim)4] (3) and [Ag2(3-NPTA)(bipy)0.5(H2O)] (4) (HBim = 1H-benzimidazole, bipy = 4,4′-bipyridyl, H2NIPH = 5-nitroisophthalic acid, H2NPTA = 3-/4-nitrophthalic acid) have been synthesized by hydrothermal reaction of Ag(I) salts with N-/O-donor ligands. Single-crystal X-ray diffraction indicated that these coordination polymers constructed from mononuclear or polynuclear silver building blocks exhibit three typical structure features from 1-D to 3-D frameworks. These compounds favour a slow release of Ag+ ions leading to excellent and long-term antimicrobial activities, which is distinguished by their different topological structures, towards both Gram-negative bacteria, Escherichia coli (E. coli) and Gram-positive bacteria, Staphylococcus aureus (S. aureus). In addition, these compounds show good thermal stability and light stability under UV-vis and visible light, which are important characteristics for their further application in antibacterial agents.
Co-reporter:Wei-tao Gong, Bei Gao, Jian-zhang Zhao and Gui-ling Ning
Journal of Materials Chemistry A 2013 - vol. 1(Issue 18) pp:NaN5504-5504
Publication Date(Web):2013/03/26
DOI:10.1039/C3TA10412E
A reusable colorimetric and fluoremetric chemodosimeter for the highly selective detection of Hg2+ has been rationally designed.
Co-reporter:Junwei Ye, Jingying Zhang, Ling Ye, Dong Xie, Tao Xu, Gang Li and Guiling Ning
Dalton Transactions 2008(Issue 39) pp:NaN5349-5349
Publication Date(Web):2008/08/19
DOI:10.1039/B806502K
The hydrothermal reaction of La(III), Cu(II) and 5-nitroisophthalic acid (H2NIPH) at different temperatures produced four novel coordination polymers, [LaCu(NIPH)(ONIPH)(H2O)4]·H2O (1), [La2Cu(NIPH)4(H2O)6] (2), [La2Cu(NIPH)4(H2O)2] (3) and [LaCu(NIPH)2(HNIPH)(H2O)2]·2H2O (4), (HONIPH = 2-hydroxy-5-nitroisophthalate), these 2D and 3D frameworks are the first La(III)–Cu(II) heterometallic frameworks based on infinite rod-shaped molecular building blocks. In 1, a 2D layer is composed of infinite La–O–C–O–Cu rods consisting of alternating [La2O14(CO2)2] and [Cu2O8] units by corner sharing. The 3D frameworks of 2–4 are constructed from different rod-shaped molecular building blocks, which are linked by NIPH ligands to form a pcu-type rod packing arrangement. Interestingly, HONIPH came from the in situhydroxylation of H2NIPH in the hydrothermal reaction.
Co-reporter:Hongchang Pang, Guiling Ning, Weitao Gong, Junwei Ye and Yuan Lin
Chemical Communications 2011 - vol. 47(Issue 22) pp:NaN6319-6319
Publication Date(Web):2011/04/21
DOI:10.1039/C1CC10279F
A facile, dissolution-free route to direct synthesis of hexagonal magnesium hydroxide nanoplates from natural brucite is reported. Stable brucite undergoes disaggregation into thin nanosheets and subsequent solid–solid transformation in the presence of p-toluene sulfonate, circumventing the threshold of size effect from bulk brucite to Mg(OH)2 nanoplates.
Co-reporter:Peng Tian, Junwei Ye, Nuo Xu, Weitao Gong, Qiushuang Zhang, Yuan Lin and Guiling Ning
Chemical Communications 2011 - vol. 47(Issue 43) pp:NaN12010-12010
Publication Date(Web):2011/09/30
DOI:10.1039/C1CC15186J
A facile strategy by using magnesium carbonate as the recyclable template has been developed to synthesize a variety of uniform inorganic hollow structures whose composition, size and shape can be readily modulated to generate interesting structures such as TiO2, Al2O3, SiO2, Gd2O3 and NiO microtubes and TiO2, SiO2 hollow microboxes.
Co-reporter:Raji Feyisa Bogale, Junwei Ye, Yuan Sun, Tongxin Sun, Siqi Zhang, Abdul Rauf, Cheng Hang, Peng Tian and Guiling Ning
Dalton Transactions 2016 - vol. 45(Issue 27) pp:NaN11144-11144
Publication Date(Web):2016/06/13
DOI:10.1039/C6DT01636G
A luminescent Eu(III)-based coordination polymer, {[Eu(H2O)5(BTEC)][H(C5H6N2)]·3H2O} (1) has been synthesized under hydrothermal conditions using 1,2,4,5-benzenetetracarboxylic acid (H4BTEC) as a linker. Compound 1 possesses an anionic zig-zag chain constructed from the BTEC ligands and [EuO4(H2O)5] nodes. The protonated 4-aminopyridine groups as guests are located between chains. 1 exhibits the characteristic sharp emission bands of Eu3+ at 578, 593, 615, 652 and 693 nm upon excitation at 290 nm. The strong emission of 1 could be quenched effectively by trace amounts of Fe3+ ions even in the presence of other metal ions including Al3+, Ca2+, Cd2+, Co2+, Cr3+, Cu2+, Fe2+, K+, Mg2+, Mn2+, Pd2+ and Zn2+. Similarly, 1 also exhibits superior selectivity and sensitivity towards 4-nitrophenol (4-NP) compared with other competing interfering analytes, such as 2,4,6-trinitrophenol, 2,6-dinitrotolune, 4-nitrotoluene, nitrobenzene, 1,3-dinitrobenzene, o-xylene, nitromethane, nitropropane, phenol, 4-bromophenol and bromobenzene, through a fluorescence quenching mechanism. The possible fluorescence quenching mechanisms are discussed. Moreover, 1 could be used as a visual fluorescent test paper for selectively detecting trace amounts of Fe3+ and 4-NP.
Co-reporter:Wen-dan Chen, Wei-tao Gong, Zhi-qiang Ye, Yuan Lin and Gui-ling Ning
Dalton Transactions 2013 - vol. 42(Issue 28) pp:NaN10096-10096
Publication Date(Web):2013/05/09
DOI:10.1039/C3DT50832C
Efficient ratiometric fluorescent Fe3+ probes were designed and synthesized by linking a conjugated naphthalene chromophore to a rhodamine platform and a lipophilic triphenylphosphonium (TPP) cation. The probes could sensitively and selectively detect mitochondrial Fe3+ in living cells.
Co-reporter:Hassan Mehdi, Hongchang Pang, Weitao Gong, Manivannan Kalavathi Dhinakaran, Ali Wajahat, Xiaojun Kuang and Guiling Ning
Organic & Biomolecular Chemistry 2016 - vol. 14(Issue 25) pp:NaN5964-5964
Publication Date(Web):2016/05/03
DOI:10.1039/C6OB00600K
A novel smart supramolecular organic gelator G-16 containing anion and metal-coordination ability has been designed and synthesized. It shows excellent and robust gelation capability as a strong blue fluorescent supramolecular organic gel OG in DMF. Addition of Zn2+ produced Zn2+-coordinated supramolecular metallogel OG-Zn. Organic gel OG and organometallic gel OG-Zn exhibited efficient and different sensing behaviors towards fluoride ion due to the variation in self-assembling nature. Supramolecular metallogel OG-Zn displayed specific selectivity for fluoride ion and formed OG-Zn-F with dramatic color change from blue to blue green in solution and gel to gel states. Furthermore after directly addition of fluoride into OG produced fluoride containing organic gel OG-F with drastically modulation in color from blue to greenish yellow fluorescence via strong aggregation-induced emission (AIE) property. A number of experiments were conducted such as FTIR, 1H NMR, and UV/Vis spectroscopies, XRD, SEM and rheology. These results revealed that the driving forces involved in self-assembly of OG, OG-Zn, OG-Zn-F and OG-F were hydrogen bonding, metal coordination, π–π interactions, and van der Waal forces. In contrast to the most anion responsive gels, particularly fluoride ion responsive gels showed gel–sol state transition on stimulation by anions, the gel state of OG and OG-Zn did not show any gel-to-sol transition during the whole F− response process.
Co-reporter:Wei-tao Gong, Duo Na, Le Fang, Hassan Mehdi and Gui-ling Ning
Organic & Biomolecular Chemistry 2015 - vol. 13(Issue 7) pp:NaN1982-1982
Publication Date(Web):2014/12/18
DOI:10.1039/C4OB02498B
Gemini surfactant-like receptor R1 is designed and synthesized. The special preassembly phenomenon of R1 in a nonpolar solvent facilitates the novel ratiometric fluorescence sensing of H2PO4−via an anion-induced reassembly process in organic solvents and an anion-induced disassembly process in water.
Co-reporter:Qiang Song, Weitao Gong, Guiling Ning, Hassan Mehdi, Guiqi Zhang, Junwei Ye and Yuan Lin
Physical Chemistry Chemical Physics 2014 - vol. 16(Issue 19) pp:NaN8786-8786
Publication Date(Web):2014/02/24
DOI:10.1039/C4CP00366G
A synergic effect of sodium on the metal–insulator transition temperature reduction of tungsten-doped vanadium dioxide is noted. With the assistance of sodium, doping with tungsten yields an extra depression in phase temperature of 6–12 °C over that of 20–26 °C per at% of tungsten.
