YaoFeng Yuan

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Name: 袁耀锋; YaoFeng Yuan

Organization: Fuzhou University

Department: Department of Chemistry

Title: Professor

TOPICS

Organic Chemistry

Organocatalysis Calixarene

Chemicals
References

Pd-Catalyzed Arylperfluoroalkylation of Unactivated Olefins for the Synthesis of Heterocycles

Co-reporter:Jinhua Zheng, Pan Chen, Yaofeng Yuan, and Jiajia Cheng

The Journal of Organic Chemistry June 2, 2017 Volume 82(Issue 11) pp:5790-5790

Publication Date(Web):May 5, 2017

DOI:10.1021/acs.joc.7b00598

An efficient and highly practical palladium-catalyzed arylperfluoroalkylation of unactivated olefins is presented here. A variety of perfluoroalkylated heterocyclic derivatives can be obtained in high regioselectivity. The reaction proceeds mildly without the electronic activation of the aryl group and features high generality, low-cost fluoroalkylated sources and good functional-group compatibility.

Dual roles of substituted thiourea as reductant and ligand in CuAAC reaction

Co-reporter:Siyu Wang, Kai Jia, Jiajia Cheng, Yu Chen, Yaofeng Yuan

Tetrahedron Letters 2017 Volume 58, Issue 38(Issue 38) pp:

Publication Date(Web):20 September 2017

DOI:10.1016/j.tetlet.2017.08.029

•A highly efficient catalytic system, CuSO4·5H2O/1-(4-methoxyphenyl)-3-phenylthiourea, for the (CuAAC) reaction is reported.•Inexpensive substituted thiourea plays the role both as a reductant and a ligand.•Reactions are carried out in aqueous solution.A highly efficient catalytic system, CuSO4·5H2O/1-(4-methoxyphenyl)-3-phenylthiourea, for the copper(I)-catalyzed azide–alkyne cycloaddition reaction (CuAAC) was discovered. In the above catalytic system, substituted thiourea acts both as a reductant and a ligand. CuSO4·5H2O/1-(4-methoxyphenyl)-3-phenylthiourea is both an economical and efficient catalyst for the CuAAC reaction. In addition, the new catalytic system has advantageous features including mild and green reaction conditions, and broad substrate compatibility. A variety of 1,4-disubstituted 1,2,3-triazoles have been prepared with good to excellent yields with the CuSO4·5H2O/1-(4-methoxyphenyl)-3-phenylthiourea catalytic system in aqueous solution.Download high-res image (87KB)Download full-size image

Determination of the activity of superoxide dismutase using a glassy carbon electrode modified with ferrocene imidazolium salts and hydroxy-functionalized graphene

Co-reporter:Jian Wang;Zhou Jiang;Lili Xie;Minyan Liu

Microchimica Acta 2017 Volume 184( Issue 1) pp:289-296

Publication Date(Web):23 November 2016

DOI:10.1007/s00604-016-2018-x

A glassy carbon electrode was modified with a composite consisting of ferrocene imidazolium salts and hydroxy-functionalized graphene in a Nafion matrix. The electrode is shown to facilitate the reduction of oxygen to form the superoxide anion radical. Atomic force microscopy and electrochemical impedance spectroscopy were used to characterize the electrode. The in-situ production of superoxide anion was then studied with an analogue of methyl-Cypridina luciferin (also referred to as Vargulin). As a result, an electrochemiluminescence (ECL) based assay was developed for the improved determination of the activity of the enzyme superoxide dismutase (SOD). Under optimized conditions, the ECL based calibration plot is linear in the 0.5 to 6.5 U·mL−1 SOD activity range, with a 0.2 U·mL−1 detection limit (at a signal-to-noise ratio of 3).

Highly selective detection of fluoride based on 2,2-diferrocenylpropane benzimidazolium borate-ester salt

Co-reporter:Zhi-Ming Su, Xi-Quan Yan, Chao-Li Liang, Cai-Xia Lin, Li-Li Xie, Yao-Feng Yuan

Tetrahedron Letters 2016 Volume 57(Issue 11) pp:1250-1255

Publication Date(Web):16 March 2016

DOI:10.1016/j.tetlet.2016.02.019

A new anion receptor that utilized boron–fluoride interaction and (CH)+⋯F−-type ionic hydrogen bonding in the binding of F ions had been synthesized and characterized by IR, MS, HRMS, 11B, 1H, and 13C NMR spectra. The signaling process was confirmed by UV–vis, electrochemistry measurements as well as 1H, 19F, and 11B NMR spectroscopy. Among the tested anions: F−, Cl−, Br−, OAc−, H2PO4−, HSO4−, only F− induced a remarkable red-shift (29 nm) in the absorption spectrum which was concomitant with a color change from pink to faint yellow. This receptor provided a new approach for naked-eyed detection of F− and the detection limit was calculated to be 1.26 μM. Besides, Cyclic Voltammetry (CV) showed that the receptor had unique selectivities for F− with a remarkable phenomenon in merging of the two reduction peaks in response to the increment addition of the anions. 1H, 19F, and 11B NMR titrations demonstrated that the receptor showed affinity and high selectivity for F− and provided the evidence of interaction between the receptor and F−.

A simple and highly selective 2,2-diferrocenylpropane-based multi-channel ion pair receptor for Pb2+ and HSO4−

Co-reporter:Qian Wan, Ji-Bin Zhuo, Xiao-Xue Wang, Cai-Xia Lin and Yao-Feng Yuan

Dalton Transactions 2015 vol. 44(Issue 12) pp:5790-5796

Publication Date(Web):10 Feb 2015

DOI:10.1039/C4DT03862B

A structurally simple, 2,2-diferrocenylpropane-based ion pair receptor 1 was synthesized and characterized by 1H NMR, 13C NMR, HRMS, elemental analyses, and single-crystal X-ray diffraction. The ion pair receptor 1 showed excellent selectivity and sensitivity towards Pb2+ with multi-channel responses: a fluorescence enhancement (more than 42-fold), a notable color change from yellow to red, redox anodic shift (ΔE1/2 = 151 mV), while HSO4− promoted fluorescence enhancement when Pb2+ or Zn2+ was bonded to the cation binding-site. 1H NMR titration and density functional theory were performed to reveal the sensing mechanism based on photo-induced electron transfer (PET).

Synthesis of two nickel (II) complexes bearing pyrrolide-imine ligand and their catalytic effects on thermal decomposition of ammonium perchlorate

Co-reporter:Ji-Bin Zhuo, Zai-He Ma, Cai-Xia Lin, Li-Li Xie, Sha Bai, Yao-Feng Yuan

Journal of Molecular Structure 2015 Volume 1085() pp:13-20

Publication Date(Web):5 April 2015

DOI:10.1016/j.molstruc.2014.12.038

•Two novel pyrrolide-imine complexes are synthesized in moderate yields.•Molecular structures of complexes are characterized by SCXRD.•The structure-property relationship was investigated by UV–Vis, CV and DFT.•2b has an excellent catalytic effect on the decomposition of AP.Two pyrrolide-imine chelating Ni(II) complexes {[2-(2-CH3O-C6H4-NCH)C4H3N]2Ni (2a) and [(Fc-NCH)]C4H3N]2Ni (2b, Fc = ferrocenyl)} were prepared via treating corresponding Schiff base with 0.5 equiv. NiCl2·6H2O in moderate yields. The crystal structures of 2a and 2b were determined by single-crystal X-ray diffraction. Atom Ni(II) of 2a was coordinated by two pyrrolide-imine ligands in trans position to display a twisted octahedral coordination geometry. Ni(II) of 2b had a distorted square-planar geometry, bonded with two ferrocenyl pyrrole-imine ligands, each ferrocene and pyrrole of ligands adopting a trans conformation. The UV–vis spectroscopy and electrochemical measurements were investigated. The catalytic efficiency of the complexes on the thermal decomposition of ammonium perchlorate (AP) was studied by differential scanning calorimetry (DSC) and thermogravimetry (TG). Compared with the thermal decomposition of pure AP, the decomposition temperatures were decreased by 27 °C, 77 °C, 88 °C and 172 °C, respectively when 1a, 1b, 2a and 2b were added in AP. The results indicated that the Ni(II) complex 2b bearing ferrocene-based pyrrolide-imine N,N-chelate ligand displayed an excellent catalytic efficiency on the thermal decomposition of AP.

Selective anion receptor for fluoride detection using ferrocenyl–boronate derivative

Co-reporter:Zhi-Ming Su, Cai-Xia Lin, Yun-Tao Zhou, Li-Li Xie, Yao-Feng Yuan

Journal of Organometallic Chemistry 2015 Volume 788() pp:17-26

Publication Date(Web):15 July 2015

DOI:10.1016/j.jorganchem.2015.04.003

•Novel ferrocenyl–boronate receptor was synthesized and characterized.•The selective anion sensing property of receptor 1 was studied.•Receptor 1 had high selectivity for F− ion in UV, CV and 1H NMR titrations.The reaction of ferrocenecarboxaldehyde with (2-aminoethoxy)diphenylborane led to the formation of ferrocenyl-substituted boronate receptor 1, which was characterized by IR, MS, HRMS, 11B, 1H and 13C NMR spectra. The signaling process was confirmed by UV–vis, electrochemistry measurements as well as 1H and 19F NMR spectroscopy. The receptor 1 exhibited high selectivity for F− in CH3CN solution over all the other anions in the DPVs (differential pulse voltammetry). 1H NMR titrations indicated that F− ion induced tautomerism of E- and Z-isomer transformations of the receptor 1 and there were three kinds of protons showing obvious highfield shifts for receptor 1 in DMSO-d6. UV–vis titrations demonstrated that the receptor 1 could bind F− ion forming 1:1 stoichiometric complexes and show high selectivity and sensitivity towards F− ion.The ferrocenyl-substituted boronate receptor 1 showed high selectivity and sensitivity for fluoride anion with optical, electrochemical and 1H NMR changes.

Dynamic covalent binding and chirality sensing of mono secondary amines with a metal-templated assembly

Co-reporter:Yuntao Zhou, Yulong Ren, Ling Zhang, Lei You, Yaofeng Yuan, Eric V. Anslyn

Tetrahedron 2015 Volume 71(Issue 21) pp:3515-3521

Publication Date(Web):27 May 2015

DOI:10.1016/j.tet.2015.03.121

The recognition and analysis of mono-functionalized organics is an intensive area of research in organic chemistry. Toward this end, an in situ-generated metal-templated dynamic multi-component covalent assembly for the reversible binding and chirality sensing of mono secondary amines is presented. The reaction of pyridine-2-carboxyaldhyde, di(2-picolyl)amine, zinc triflate, tetrabutylammonium chloride, and a series of secondary amines, affords tripodal aminal zinc complexes. The dynamic nature of the system was demonstrated by component exchange of both amines and aldehydes. The equilibrium can be modulated by changing counteranions, concentrations, as well as structural feature of the amines. The competition between two iminium pathways resulted in a unique distribution of components. Due to the enantiotopicity of iminiums, decent diastereoselectivity was observed for chiral secondary amines. The resulting diastereomeric helical complexes were employed for the determination of enantiomeric excess with high accuracy.

Ferrocenylethynyl-Terminated Azobenzenes: Synthesis, Electrochemical, and Photoisomerization Studies

Co-reporter:Jian-Feng Yan;Da-Qiang Lin;Xin-Gang Wang;Kai-Qiang Wu;Dr. Li-Li Xie ;Dr. Yao-Feng Yuan

Chemistry – An Asian Journal 2015 Volume 10( Issue 3) pp:614-621

Publication Date(Web):

DOI:10.1002/asia.201403327

Abstract

Ferrocenylethynyl-terminated derivatives 8–12 have been synthesized and characterized by electrochemistry and UV/Vis spectroscopy. The electrochemical and photophysical studies indicate that the electronic communication in ferrocenylethynyl-substituted derivatives is strongly influenced by the substituted position of the ferrocenylethynyl moiety. In situ electrochemical oxidation or chemical oxidation caused a characteristically weak ligand-to-metal charge-transfer (LMCT) band to appear at 700–1000 nm. Subsequent electrochemical reduction or chemical reduction recovered the most of the original curve and the color of the solution as well. Among the derivatives, compound 8 exhibits the highest cis/trans molar ratio (64:36) in the photostationary state (PSS) upon light irradiation at 365 nm. Compound 8 exhibits excellent fatigue resistance and reversibility under several repeated reversible isomerization cycles.

2,5-Bis(2-(diphenylphosphino)phenyl)-1,3,4-oxadiazole ligands and their Cu(I) complexes for Sonogashira coupling reaction

Co-reporter:Cai-Xia Lin;Jia-Fang Zhu;Qing-Shan Li;Li-Hua Ao;Yan-Juan Jin;Feng-Bo Xu;Fang-Zhong Hu;Yao-Feng Yuan

Applied Organometallic Chemistry 2014 Volume 28( Issue 4) pp:298-303

Publication Date(Web):

DOI:10.1002/aoc.3124

Two diphosphane ligands – 2,5-bis(2-(diphenylphosphino)-5-R)phenyl)-1,3,4-oxadiazole (L1, R = H, L2, R = OMe) and their binuclear complexes, L1Cu and L2Cu, were prepared and characterized. The molecular structures of L1Cu and L2Cu, as perchlorate salts, were established by X-ray crystallography, which showed them to be binuclear complexes with each Cu atom tetrahedrally coordinated by two P atoms and two N atoms. The ligands and their Cu(I) complexes catalyzed Sonogashira coupling reactions of iodobenzene with phenylacetylene in the presence of K₂CO₃ under Pd-free conditions. Coupling reactions catalyzed by L1 or L2 with Cu(MeCN)₄ClO₄ in situ exhibited better yields than those by the corresponding Cu(I) complexes L1Cu or L2Cu. Detailed studies showed L1 or L2 with Cu(MeCN)₄ClO₄ to be suitable catalysts for the coupling reaction of terminal alkynes and aryl halides. The coupling reactions of aryl iodides with electron-withdrawing groups showed better results. Copyright © 2014 John Wiley & Sons, Ltd.

Synthesis, crystal structure and properties of benzimidazole-bridged dinuclear ferrocenyl derivatives

Co-reporter:Zheng-Mao Lai, Hong-Min Ye, Qian Wan, Li-Li Xie, Sha Bai, Yao-Feng Yuan

Journal of Molecular Structure 2014 Volume 1059() pp:33-39

Publication Date(Web):5 February 2014

DOI:10.1016/j.molstruc.2013.11.034

•Two novel benzimidazole-bridged dinuclear ferrocenyl derivatives were synthesized.•The structure-property relationship was investigated by SCXRD, UV–Vis, CV and DFT.•3 and 4 Have a good catalytic effect on the decomposition of ammonium perchlorate.1-Ferrocenyl methyl-2-ferrocenyl-3-methylbenzimidazolium iodide (3) and 1-ferrocenyl methyl-2-ferrocenyl-3-ethylbenzimidazolium iodide (4) have been synthesized and fully characterized by MS, IR, 1H NMR, 13C NMR and elemental analysis. The structure-property relationship was investigated based on single crystal X-ray diffraction analysis, UV–Vis spectroscopy, electrochemical measurements and density functional theory calculations (DFT). The mechanism of the electron transfer of 3 has been studied by DFT. Their catalytic effect on the thermal decomposition of ammonium perchlorate (AP) was investigated using differential scanning calorimetry (DSC) and thermogravimetry (TG). The results from DSC and TG analysis indicate that 3 and 4 are of high catalytic effect on lowering the decomposition temperature of AP. We expect that the novel benzimidazole-bridged dinuclear ferrocenyl derivatives would have great value in preparing high-burning-rate catalyst for composite solid propellants.Graphical abstract

Acyclic ferrocene-based imidazolium salts as multi-site anion receptors

Co-reporter:Ji-Bin Zhuo, Chao-Yu Zhang, Cai-Xia Lin, Sha Bai, Li-Li Xie, Yao-Feng Yuan

Journal of Organometallic Chemistry 2014 Volumes 763–764() pp:34-43

Publication Date(Web):1 August 2014

DOI:10.1016/j.jorganchem.2014.04.018

•Several acyclic ferrocene-based receptors 1–4 are synthesized in moderate yields.•Receptors 1 and 2 are characterized by single-crystal X-ray diffraction analysis.•Receptors 1–4 have selectivity for F− and HSO4− in the electrochemical behaviors.•Receptors 1–4 have a good fluoride binding ability in DMSO-d6.•The flexible receptors 1 and 2 can recognize fluoride ion excellent better.Several novel acyclic multi-site receptors comprising of imidazolium moieties were synthesized and structurally characterized. All of these compounds were characterized through 1H NMR, 13C NMR, MS and IR, elemental analysis. The crystal structures of 1,4-bis(1-ferrocenylmethylimidazoliumylethoxy)-benzene hexafluorophosphate (1) and 1,3-bis(1-ferrocenylmethylimidazoliumylethoxy)-benzene hexafluorophosphate (2) were confirmed by X-ray crystallography, it was clear that molecules were linked by C–H⋯F hydrogen bonds interactions between PF6− and cations. The anion binding studies were investigated by electrochemistry and 1H NMR spectroscopy. Electrochemical behaviors indicated that all the receptors displayed unique electrochemical sensing property for F− in CH3CN. 1H NMR titrations demonstrated that all the receptors have good fluoride binding ability in DMSO-d6 through (C–H)+⋯X− hydrogen bonds. The flexible receptors 1 and 2 exhibited higher affinity toward anion than the rigid receptors 3 and 4.The acyclic receptors comprising of ferrocenyl unit and imidazoliun moiety were synthesized and sructurally chracterized. The anion binding studies were investigated by electrochemistry and 1H NMR spectroscopy, which indicated that flexible receptors 1 and 2 exhibited higher affinity for fluoride ion.

A selective anion receptor based on 2,2-diferrocenylpropane imidazolium sulphonate salt

Co-reporter:Zhi-Ming Su, Hong-Min Ye, Xiao-Xiao Zhu, Li-Li Xie, Sha Bai, Yao-Feng Yuan

Journal of Organometallic Chemistry 2014 750() pp: 162-168

Publication Date(Web):

DOI:10.1016/j.jorganchem.2013.11.006

Mono- and dinuclear Hg(II) complexes of bis-(N-heterocyclic carbene) bridged with calixarene fragments: Synthesis, structure and sensing behavior

Co-reporter:Cai-Xia Lin, Lin Guo, Qing-Shan Li, Zheng-Zhi Zhang, Yao-Feng Yuan, Feng-Bo Xu

Journal of Organometallic Chemistry 2014 749() pp: 180-187

Publication Date(Web):

DOI:10.1016/j.jorganchem.2013.09.014

Design, synthesis and anion recognition of ferrocene-based benzimidazolium receptors

Co-reporter:Ji-Bin Zhuo, Xiao-Xiao Zhu, Cai-Xia Lin, Sha Bai, Li-Li Xie, Yao-Feng Yuan

Journal of Organometallic Chemistry 2014 770() pp: 85-93

Publication Date(Web):

DOI:10.1016/j.jorganchem.2014.08.011

Ferrocene-based sulfonyl dihydropyrazole derivatives: Synthesis, structure, electrochemistry and effect on thermal decomposition of NH4ClO4

Co-reporter:Ji-Bin Zhuo, Heng-Dong Li, Cai-Xia Lin, Li-Li Xie, Sha Bai, Yao-Feng Yuan

Journal of Molecular Structure 2014 1067() pp: 112-119

Publication Date(Web):5 June 2014

DOI:10.1016/j.molstruc.2014.03.013

•Three ferrocene-based sulfonyl-substituted dihydropyrazoles 3a–c are synthesized in moderate yields.•Molecular structure of 3a has been characterized by single-crystal X-ray diffraction analysis for a first time.•The electrochemical behaviors of 3a–c are discussed; the electrochemical inequivalence of 3a was confirmed by DFT.•Dinuclear ferrocenyl pyrazole 3a shows a greater catalytic effect on the decomposition temperature of AP than 3b–c.Three ferrocene-based sulfonyl-substituted dihydropyrazoles 3a–c have been synthesized, from the corresponding α,β-unsaturated diketones, and fully characterized. The crystal structures of 3a–c have been confirmed by X-ray crystallography, and electrochemistry behaviors of 3a–c have been examined by cyclic voltammetry (CV). Representatively, the mechanism of the electron transfer in redox process of 3a has been verified by density functional theory (DFT) calculation. It has been found that the activity of catalytic decomposition of ammonium perchlorate (AP) is significantly lowered (by 62.9–104.7 °C) with an addition of 3a–c. We expect that the ferrocene-based sulfonyl dihydropyrazole derivatives would have a great value in burning rate catalyst as composite solid propellants.

Ruthenium(II) bis(terpyridine) electron transfer complexes with alkynyl–ferrocenyl bridges: synthesis, structures, and electrochemical and spectroscopic studies

Co-reporter:Kai-Qiang Wu, Jian Guo, Jian-Feng Yan, Li-Li Xie, Feng-Bo Xu, Sha Bai, Peter Nockemann and Yao-Feng Yuan

Dalton Transactions 2012 vol. 41(Issue 36) pp:11000-11008

Publication Date(Web):27 Jun 2012

DOI:10.1039/C2DT31091K

Two novel alkynyl-bridged symmetric bis-tridentate ligands 1,2-bis(1′-[4′-(2,2′:6′,2′′-terpyridinyl)]ferrocenyl)ethyne (3a; tpy–Fc–CC–Fc–tpy; Fc = ferrocenyl; tpy = terpyridyl) and 1,4-bis(1′-[4′-(2,2′:6′,2′′-terpyridinyl)]ferrocenyl)-1,3-butadiyne (3b; tpy–Fc–CC–CC–Fc–tpy) and their Ru2+ complexes 6a and 6b have been synthesized and characterized by cyclic voltammetry, UV-vis and luminescence spectroscopy, and in the case of 3b by single-crystal X-ray diffraction. Cyclic voltammograms of both compounds, 3a and 3b, display two severely overlapping ferrocene-based oxidative peaks with only one reductive peak. The redox behavior of 6a and 6b is dominated by the Ru2+/Ru3+ redox couple (E1/2 from 1.33 to 1.34 V), the Fe2+/Fe3+ redox couples (E1/2 from 0.46 to 0.80 V), and the tpy/tpy−/tpy2− redox couples (E1/2 from −1.19 to −1.48 V). The UV-vis spectra of 6a and 6b show absorption bands assigned to the 1[(d(π)Fe)6] → 1[(d(π)Fe)5(π*tpyRu)1] MMLCT transition at ∼555 nm. Complexes 6a and 6b are luminescent in H2O–CH3CN (4:1, v/v) solution at room temperature, and 6b exhibits the strongest luminescence intensity (λmaxem: 710 nm, Φem: 2.28 × 10−4, τ: 358 ns) relative to analogous ferrocene-based bis(terpyridine) Ru(II) complexes reported so far.

A Squaraine-Based Colorimetric and “Turn on” Fluorescent Sensor for Selective Detection of Hg2+ in an Aqueous Medium

Co-reporter:Cheng Chen, Ruyong Wang, Liangqia Guo, Nanyan Fu, Haijun Dong, and Yaofeng Yuan

Organic Letters 2011 Volume 13(Issue 5) pp:1162-1165

Publication Date(Web):February 9, 2011

DOI:10.1021/ol200024g

A novel squaraine-based chemosensor SQ-1 has been synthesized, and its sensing behavior toward various metal ions was investigated by UV−vis and fluorescence spectroscopies. In AcOH−H2O (40:60, v/v) solution, Hg2+ ions coordinate with SQ-1 causing a deaggregation which induces a visual color and absorption spectral changes as well as strong fluorescence. In contrast, the addition of other metals (e.g., Pb2+, Cd2+, Cu2+, Zn2+, Al3+, Ni2+, Co2+, Fe3+, Ca2+, K+, Mg2+, Na+, and Ag+) does not induce these changes at all. Thus SQ-1 is a specific Hg2+ sensing agent due to the inducing deaggregation of the dye molecule by Hg2+.

Synthesis of dihydropyrazole-bridged dinuclear ferrocenyl derivatives and their catalytic effect on thermal decomposition of ammonium perchlorate

Co-reporter:Yong Gao;Heng-dong Li;Cheng-feng Ke;Li-li Xie;Bing Wei;Yao-feng Yuan

Applied Organometallic Chemistry 2011 Volume 25( Issue 6) pp:407-411

Publication Date(Web):

DOI:10.1002/aoc.1774

Abstract

Dihydropyrazole-bridged dinuclear ferrocenyl derivatives (3a–3c) have been synthesized by the reaction of 1,3-diferrocenyl-2-propen-1-on (1) with hydrazine, then acylation with acyl chloride directly. The structures were determined by mass spectrometry, IR and ¹H NMR spectroscopy. The compound 3c was characterized by single-crystal X-ray analyses. It was found that compounds 3a–3c have significant catalytic effect on the decomposition of ammonium perchlorate (AP). Compared with the thermal decomposition of pure AP, adding 3a, 3b and 3c in AP decreases its decomposition temperature by 78.8, 74.3 and 57.1 °C, respectively. Copyright © 2011 John Wiley & Sons, Ltd.

Synthesis of the first 1,3-disubstituted 1,3-butadienyl heteroannular bridged [4]ferrocenophane

Co-reporter:Kai-Qiang Wu, Li-Li Xie, Yong-Fan Zhang, Feng-Bo Xu, Yao-Feng Yuan

Journal of Organometallic Chemistry 2011 696(8) pp: 1491-1495

Publication Date(Web):

DOI:10.1016/j.jorganchem.2010.12.032

Synthesis, structure and electrochemical behaviour of 2,2-diferrocenylpropane-substituted dihydropyrazole derivatives

Co-reporter:Bing Wei, Yong Gao, Cai-Xia Lin, Heng-Dong Li, Li-Li Xie, Yao-Feng Yuan

Journal of Organometallic Chemistry 2011 696(8) pp: 1574-1578

Publication Date(Web):

DOI:10.1016/j.jorganchem.2010.12.034

Alkynyl-Bridged Ruthenium(II) 4′-Diferrocenyl-2,2′:6′,2′′-terpyridine Electron Transfer Complexes: Synthesis, Structures, and Electrochemical and Spectroscopic Studies

Co-reporter:Kai-Qiang Wu, Jian Guo, Jian-Feng Yan, Li−Li Xie, Feng-Bo Xu, Sha Bai, Peter Nockemann, and Yao-Feng Yuan

Organometallics 2011 Volume 30(Issue 13) pp:3504-3511

Publication Date(Web):June 8, 2011

DOI:10.1021/om200113d

The novel ligand 4′-diferrocenylalkyne-2,2′:6′,2′′-terpyridine (7; Fc-C≡C-Fc-tpy; tpy = terpyridyl; Fc = ferrocenyl) and its Ru2+ complexes 8–10 have been synthesized and characterized by single-crystal X-ray diffraction, cyclic voltammetry, and UV–vis and luminescence spectroscopy. Electrochemical data and UV absorption and emission spectra indicate that the insertion of an ethynyl group causes delocalization of electrons in the extended π* orbitals. Cyclic voltammetric measurements of 7 show two successive reversible one-electron-oxidation processes with half-wave potentials of 0.53 and 0.78 V. The small variations of the E1/2 values for the Fe2+/Fe3+ redox couples after the coordination of the Ru2+ ion suggest a weak interaction between the Ru2+ and Fe2+ centers. After insertion of an ethynyl group, UV–vis absorption spectra show a red shift of the absorption peak of the 1[(d(π)Fe)6] → 1[(d(π)Fe)5(π*tpyRu)1] MMLCT of the Ru2+ complexes. The Ru2+ complex 8 exhibits the strongest luminescence intensity (λmaxem 712 nm, Φem = 2.63 × 10–4, τ = 323 ns) relative to analogous ferrocene-based terpyridine Ru(II) complexes in H2O/CH3CN (4/1 v/v) solution.

Ruthenium(II) bis(terpyridine) electron transfer complexes with alkynyl–ferrocenyl bridges: synthesis, structures, and electrochemical and spectroscopic studies

Co-reporter:Kai-Qiang Wu, Jian Guo, Jian-Feng Yan, Li-Li Xie, Feng-Bo Xu, Sha Bai, Peter Nockemann and Yao-Feng Yuan

Dalton Transactions 2012 - vol. 41(Issue 36) pp:NaN11008-11008

Publication Date(Web):2012/06/27

DOI:10.1039/C2DT31091K

A simple and highly selective 2,2-diferrocenylpropane-based multi-channel ion pair receptor for Pb2+ and HSO4−

Co-reporter:Qian Wan, Ji-Bin Zhuo, Xiao-Xue Wang, Cai-Xia Lin and Yao-Feng Yuan

Dalton Transactions 2015 - vol. 44(Issue 12) pp:NaN5796-5796

Publication Date(Web):2015/02/10

DOI:10.1039/C4DT03862B