Co-reporter:Hai-Hua Wang, Lei Hou, Yong-Zhi Li, Chen-Yu Jiang, Yao-Yu Wang, and Zhonghua Zhu
ACS Applied Materials & Interfaces May 31, 2017 Volume 9(Issue 21) pp:17969-17969
Publication Date(Web):May 17, 2017
DOI:10.1021/acsami.7b03835
A new Co(II)-based MOF, {[Co2(tzpa)(OH)(H2O)2]·DMF}n (1) (H3tzpa = 5-(4-(tetrazol-5-yl)phenyl)isophthalic acid), was constructed by employing a tetrazolyl-carboxyl ligand H3tzpa. 1 possesses 1D tubular channels that are decorated by μ3–OH groups, uncoordinated carboxylate O atoms, and open metal centers generated by the removal of coordinated water molecules, leading to high CO2 adsorption capacity and significantly selective capture for CO2 over CH4 and CO in the temperature range of 298–333 K. Moreover, 1 shows the chemical stability in acidic and basic aqueous solutions. Grand canonical Monte Carlo simulations identified multiple CO2-philic sites in 1. In addition, the activated 1 as the heterogeneous Lewis and Brønsted acid bifunctional catalyst facilitates the chemical fixation of CO2 coupling with epoxides into cyclic carbonates under ambient conditions.Keywords: chemical conversion; CO2 adsorption; crystal engineering; cycloaddition reaction; heterogeneous catalysis; metal−organic framework;
Co-reporter:Xiu-Yuan Li;Yong-Zhi Li;Yun Yang;Yao-Yu Wang;Zhonghua Zhu
Chemical Communications 2017 vol. 53(Issue 96) pp:12970-12973
Publication Date(Web):2017/11/30
DOI:10.1039/C7CC08298C
The first strontium-based MOF possessing polar tubular channels embedded with a high density of open Lewis acidic metal sites and basic oxalamide groups was constructed, which shows not only a high CO2 and C2H6 adsorption capability and significant selectivity for CO2 over both CH4 and CO, and for C2H6 over CH4, but also size-selective chemical conversion of CO2 with epoxides producing cyclic carbonates under ambient conditions.
Co-reporter:Li Zhang;Xin Zhao;Zengqi Zhang;Yongsong Wang;Jun Li
Inorganic Chemistry Frontiers 2017 vol. 4(Issue 2) pp:360-367
Publication Date(Web):2017/02/13
DOI:10.1039/C6QI00381H
In this paper, we designed and synthesized three novel free-base imidazolyl porphyrins via the Macdonald [2 + 2] method, and their reactions with different metal ions afforded three new metalloporphyrin frameworks (MPFs) [Co(tBu-Ph)2(Im-Ph)2Por]·2DMF (1), [Co(F3-Ph)2(Im-Ph)2Por]·1.5DMF (2), and [Fe(Me2N, F4-Ph)2(Im-Ph)2Por]·3DMF (3), which display rich structural diversity. Complexes 1 and 2 are isostructural two-dimensional (2D) grid layers, which feature the rare rotaxane-like bilayer and an offset-stacking ABCD fashion of layers, as well as the significantly saddled porphyrin macrocycles. Differently, complex 3 forms a 4-connected lvt 3D framework with the slightly ruffled porphyrin macrocycles, which contains not only interesting helical channels but also uncommon tetrahedral cages. Gas adsorption studies of three complexes reveal the moderate CO2 adsorption capacity. Meanwhile, all three complexes exhibit preferable catalytic activity for ethylbenzene oxidation.
Co-reporter:Fang Zhang;Wenyan Zhang;Yangtian Yan;Yunlong Wu;Ruifeng Yang;Feng Cao;Yao-Yu Wang
Dalton Transactions 2017 vol. 46(Issue 43) pp:15118-15123
Publication Date(Web):2017/11/07
DOI:10.1039/C7DT03363J
Two new three-dimensional (3D) porous metal–organic frameworks (MOFs), {[Cd2(L)(NMP)(H2O)2]·2H2O}n (1) and {[Zn(L)0.5(H2O)]·NMP·H2O}n (2), have been solvothermally synthesized by using Zn(II) and Cd(II) ions with H4L (H4L = 1,4-di(5,6-bicarboxylbenzimidazol-lylmethyl)benzene) in different ratios of H2O and NMP (NMP = 1-methyl-2-pyrrolidinone) solvents, all of which have been characterized by elemental analysis, FT-IR spectroscopy, powder X-ray diffraction (PXRD), and thermogravimetric analysis (TGA). As revealed by structural analysis, the H4L ligand took different coordination fashions in 1 and 2, and as a result, two MOFs with a novel (3,4,7)-connected trinodal net and (3,6)-connected binodal net were obtained, respectively. The structure comparison reveals that the coordination modes of ligands and the types of metal ions play decisive roles in regulating the final networks of MOFs. The desolvated frameworks 1 and 2 possess polar channels decorated with uncoordinated carboxylate groups, leading to an excellent ability to attract CO2 as well as significant adsorption selectivity for CO2 over CH4 at 273 and 298 K. Solid state 1 and 2 show blue photoluminescence.
Co-reporter:Hong-Yun Yang;Yong-Zhi Li;Wen-Juan Shi;Yao-Yu Wang;Zhonghua Zhu
Dalton Transactions 2017 vol. 46(Issue 35) pp:11722-11727
Publication Date(Web):2017/09/11
DOI:10.1039/C7DT02496G
A new metal–organic framework, [Zn3(μ3-OH)(tzba)2(bpy)(H2O)]OH·DMF (1), was solvothermally synthesized by employing tetrazolate-carboxylate 4-(1H-tetrazol-5-yl) benzoic acid (H2tzba) linker and 2,2′-bipyridine (bpy) chelating coligand. 1 contains novel Zn6(μ3-OH)2(μ2-H2O)2(COO)4(N4C)2 hexanuclear clusters and reveals a three-dimensional (3D) microporous supramolecular framework based on the stacked 2D layers. The highly polar pores cause not only strong affinity towards CO2 molecules but also a significant selective adsorption of CO2 over CH4. Meanwhile, the multiple binding sites for CO2 in the framework were determined by Grand Canonical Monte Carlo (GCMC) simulations. 1 also shows strong blue luminescence from ligand-to-metal charge transfer (LMCT).
Co-reporter:Gao-Peng Li, Ge Liu, Yong-Zhi Li, Lei Hou, Yao-Yu Wang, and Zhonghua Zhu
Inorganic Chemistry 2016 Volume 55(Issue 8) pp:3952-3959
Publication Date(Web):March 29, 2016
DOI:10.1021/acs.inorgchem.6b00217
Seven new isostructural lanthanide metal–organic frameworks (Ln-MOFs), [Ln(Hpzbc)2(NO3)]·H2O (1-Ln, Ln = Nd3+, Sm3+, Eu3+, Gd3+, Tb3+, Er3+, and Yb3+ ions, H2pzbc = 3-(1H-pyrazol-3-yl) benzoic acid), with one-dimensional (1D) channels decorated by nitrate anions and pyrazoyl groups have been constructed. 1-Ln, as revealed by structural analysis, represent uncommon microporous 3D Ln-pyrazoyl-carboxyl systems using pyrazoyl-carboxyl bifunctional ligands as bridges. The luminescent investigations show that 1-Eu is an excellent MOF-based fluorescent probe, with high sensitivity, selectivity, and simple regeneration, for environmentally relevant Fe3+ and Cr2O72– ions. 1-Eu also presents highly selective capture for CO2 over N2 and CH4 due to the multiple binding sites for CO2 molecules, which were supported by Grand Canonical Monte Carlo (GCMC) simulations.
Co-reporter:Bo Liu, Hui-Fang Zhou, Lei Hou, Jian-Ping Wang, Yao-Yu Wang, and Zhonghua Zhu
Inorganic Chemistry 2016 Volume 55(Issue 17) pp:8871-8880
Publication Date(Web):August 11, 2016
DOI:10.1021/acs.inorgchem.6b01416
When the coordination sites of ligands were shifted, the solvothermal reactions of four positional isomeric asymmetrical pyridyldicarboxylatic acids with Cd(NO3)2 generated four new coordination polymers, [Cd(L1)(DMF)3]·DMF·H2O (1), [H2N(CH3)2]2[Cd(L2)2]·3DMF·H2O (2), [Cd(L3)(H2O)2] (3), and [Cd(L4)]·1.5DMF (4), where DMF = N,N-dimethylformamide, H2L1 = 2-(3′-carboxylphenyl)isonicotinic acid, H2L2 = 2-(4′-carboxylphenyl)isonicotinic acid, H2L3 = 5-(3′-carboxylphenyl)nicotic acid, and H2L4 = 2-(3′-pyridyl)terephthalic acid. 1 shows a rare 2D fabric structure. 2 discloses a grid-layer structure with heterochiral helical chains and in which three sets of layers stack in different directions, affording an unprecedented 2D + 2D + 2D → 3D polycatenating framework with 3D intersecting porous systems. 3 also displays a 2D layer possessing strong intralayer π···π interactions and interlayer hydrogen bonds. 4 contains a rare Cd2(COO)4 paddle-wheel unit and forms a 3D framework with 1D open channels. The carboxyl and pyridyl groups of the positional isomeric H2L1–H2L4 ligands show distinct bridging fashions, which leads to the production of versatile architectures of 1–4, and their effects on the crystal structures are discussed. 1–4 reveal solid-state photoluminescence stemming from intraligand charge transfer. 2 and 4 show high selectivity for CO2 over CH4 but with different CO2 adsorption enthalpies. Grand canonical Monte Carlo simulations identified the multiple adsorption sites in 2 for CO2.
Co-reporter:Hai-Hua Wang, Hong-Yun Yang, Chen-Hao Shu, Zi-Yi Chen, Lei Hou, and Yao-Yu Wang
Crystal Growth & Design 2016 Volume 16(Issue 9) pp:5394-5402
Publication Date(Web):July 27, 2016
DOI:10.1021/acs.cgd.6b00890
Five new Cd(II) complexes, {[Cd1.5(tzia)(H2O)2]·H2O}n (1), {[Cd1.5(tzia)(H2O)4]·1.5H2O}n (2), [Cd(H2tzia)2(H2O)4]·H2O (3), [Cd5(μ3-OH)(tzia)3(H2O)7]·2H2O}n (4), and {[Cd2(μ3-OH)(tzia)(H2O)2]·H2O}n (5) (H3tzia = 5-(1H-tetrazol-5-yl)isophthalic acid), were assembled employing a tetrazolyl-carboxyl ligand H3tzia with Cd(II) ions, revealing versatile structures from zero-dimensional (0D) mononuclear molecule, 2D layer to 3D framework, in which five new types of coordination modes of H3tzia were observed. Complex 1 shows a 3D (3,6)-connected ant net based on trinuclear [Cd3(COO)2(N4C)2] cluster; 2 forms an unusual 3D (3,4)-connected 3,4T1 net with 1D tubes based on the 26-membered metallocycles; 3 is a mononuclear molecule; 4 displays an unprecedented (3,4,10)-connected 2D layer based on pentanuclear [Cd5(μ3-OH)(COO)2(N4C)3] cluster; 5 is a 3D porous framework containing 1D Cd-hydroxy-tetrazolyl ribbons. Complexes 1–5 exhibit strong luminescence with different energies resulted from the various coordination modes of tzia. The mechanism of luminescence was further investigated by density functional theory (DFT) calculations.
Co-reporter:Dr. Ge Liu;Dr. Dong Xie;Dr. Rui Li; Wen-Yan Zhang; Yao-Yu Wang
ChemPlusChem 2016 Volume 81( Issue 8) pp:752-757
Publication Date(Web):
DOI:10.1002/cplu.201600025
Abstract
By treating a semirigid 5-oxyacetate isophthalic acid (H3OAIP) ligand with MnSO4/CoSO4/CdSO4 under solvothermal conditions, three isostructural cluster organic frameworks, [M2(OH)(OAIP)(DMA)]⋅H2O (M=Mn2+ (1), Co2+ (2), Cd2+ (3); DMA=N,N′-dimethylacetamide) were constructed. The three complexes contain novel eight-connected tetranuclear M4(OH)2(COO)6(OCH2COO)2 clusters with the unique hexagonal bipyramidal configuration, which are extended by four-connected OAIP linkers to form an uncommon (4,8)-connected alb-4,8-Cmce topology based on (3,6)-connected kgd sublayers. Both 1 and 2 showed significant antiferromagnetic interactions between the intracluster metal ions, whereas 3 revealed strong blue photoluminescence.
Co-reporter:Hai-Hua Wang, Li-Na Jia, Lei Hou, Wen-juan Shi, Zhonghua Zhu, and Yao-Yu Wang
Inorganic Chemistry 2015 Volume 54(Issue 4) pp:1841-1846
Publication Date(Web):January 30, 2015
DOI:10.1021/ic502733v
By a less-exploited strategy, a stable framework was constructed by using 4,4′-biphenyldicarboxylic acid (H2bpdc) and methyl-functionalized 3,3′,5,5′-tetramethyl-4,4′-bipyrazole (H2bpz) coligands, revealing a new (6,8)-connected net based on two extremely rare trinuclear and tetranuclear metal–carboxylate–pyrazolate clusters. The framework is very porous and possesses not only high CO2 loadings but also very high CO2/N2 selectivities at 308 and 313 K because of the polar pore surface decorated by clusters, pyrazolyl units, and confined cages with methyl groups dangling. Importantly, GCMC simulation identified two favorable CO2 sorption sites located sequentially near Co3(pz)3 and Co3(CO2)2(pz) motifs of the tetranuclear cluster, and the multipoint framework–CO2 interactions were distinguished. The framework also displays remarkable stability toward water and organic solvents.
Co-reporter:Li-Yun Du, Hui Wang, Ge Liu, Dong Xie, Fu-Sheng Guo, Lei Hou and Yao-Yu Wang
Dalton Transactions 2015 vol. 44(Issue 3) pp:1110-1119
Publication Date(Web):05 Nov 2014
DOI:10.1039/C4DT03129F
Employing an uninvestigated eight N-donor bitriazole ligand, 5′-(pyrazin-2-yl)-2H,4′H-3,3′-bi(1,2,4-triazole) (H2pzbtz), five complexes, {[Zn2(pzbtz)(SO4)(H2O)2]·2H2O}n (1), {[Cd(pzbtz)]·3H2O}n (2), [Zn3(Hpzbtz)2(SO4)2(H2O)6] (3), [Co(Hpzbtz)2(H2O)2] (4) and {[Co2(pzbtz)2(H2O)2]·4H2O}n (5), have been solvothermally synthesised by altering the reaction solvents and temperatures. Complex 1 shows a three-dimensional (3D) framework with a very rare (3,5)-connected fsc-3,5-Cmce-2 topology. Complex 2 exhibits a (4,4)-connected 3D pts framework with 1D channels. Complexes 3 and 4 are discrete trinuclear and mononuclear molecules, respectively. Complex 5 presents a chiral 3D framework based on a novel trinuclear Co3(tr)4 cluster and features an unusual six-connected lcy topology. In the five complexes, H2pzbtz show a very variety of geometrical configurations and coordination modes. Due to the planarity of H2pzbtz, complexes 1–3 display strong photoluminescence; in particular, 1 features highly selective luminescent sensing for the Cu2+ ion and nitrobenzene molecule. In addition, 2 shows highly selective adsorption for CO2 over CH4, and 5 exhibits antiferromagnetic exchange interactions among the Co2+ ions.
Co-reporter:Hai-Hua Wang;Tao-Tao Guo;Dong Xie;Zhi-Qin Bai;Yao-Yu Wang
European Journal of Inorganic Chemistry 2015 Volume 2015( Issue 35) pp:5773-5780
Publication Date(Web):
DOI:10.1002/ejic.201500981
Abstract
Two isostructural 3D metal–organic frameworks (MOFs), {[Zn3(tzba)3(dabco)]·5DMF·3H2O} (1) and {[Zn3(F-tzba)3(dabco)]·5DMA·3H2O} (2) [tzba = 4-(1H-tetrazol-5-yl) benzolate, F-tzba = 2-fluoro-4-(1H-tetrazol-5-yl) benzolate, dabco = triethylenediamine], were solvothermally synthesized from a tetrazolate–carboxylate bifunctional linker and a diamine ligand. The framework contains an uncommon metal–tetrazolate–carboxylate linear trinuclear Zn3(ttaz)3(COO)3 (ttaz = tetrazolyl) cluster, which serves as an eight-connected node to afford a 3D porous network. Both 1 and 2 show strong photoluminescence and selective luminescent quenching for Cu2+ ions and nitrobenzene relative to that shown by other metal ions (e.g., Na+, K+, Mg2+, Ca2+, Mn2+, Co2+, Ni2+, Cd2+, and Pb2+) and organic solvents (e.g., methanol, ethanol, acetonitrile, n-propanol, 2-propanol, ethyl acetate, toluene, dichloromethane, N,N′-dimethylformamide, and N-methylpyrrolidone). It is interesting to find that relative to 1, 2 decorated with F atoms exhibits more efficient luminescent sensing for these two guests. Furthermore, 2 also adsorbs more CO2 and has higher CO2/CH4 adsorption selectivities than 1 under the same conditions, which can be ascribed to the CO2-philic F sites in the pores of 2. These advantages make 2 a promising material in both luminescent sensors and CO2 separation from a CO2/CH4 mixture.
Co-reporter:Dr. Hai-Hua Wang;Wen-Juan Shi; Lei Hou;Gao-Peng Li; Zhonghua Zhu;Yao-Yu Wang
Chemistry - A European Journal 2015 Volume 21( Issue 46) pp:16525-16531
Publication Date(Web):
DOI:10.1002/chem.201502532
Abstract
The reaction of N-rich pyrazinyl triazolyl carboxyl ligand 3-(4-carboxylbenzene)-5-(2-pyrazinyl)-1H-1,2,4-triazole (H2cbptz) with MnCl2 afforded 3D cationic metal–organic framework (MOF) [Mn2(Hcbptz)2(Cl)(H2O)]Cl⋅DMF⋅0.5 CH3CN (1), which has an unusual (3,4)-connected 3,4T1 topology and 1D channels composed of cavities. MOF 1 has a very polar framework that contains exposed metal sites, uncoordinated N atoms, narrow channels, and Cl− basic sites, which lead to not only high CO2 uptake, but also remarkably selective adsorption of CO2 over N2 and CH4 at 298–333 K. The multiple CO2-philic sites were identified by grand canonical Monte Carlo simulations. Moreover, 1 shows excellent stability in natural air environment. These advantages make 1 a very promising candidate in post-combustion CO2 capture, natural-gas upgrading, and landfill gas-purification processes.
Co-reporter:Bo Liu, Wei-Ping Wu, Lei Hou and Yao-Yu Wang
Chemical Communications 2014 vol. 50(Issue 63) pp:8731-8734
Publication Date(Web):22 May 2014
DOI:10.1039/C4CC03049D
Four uncommon isostructural nanocage-based 3D Ln-MOFs, 1-Ln (Ln = Eu, Tb, Gd and Dy), were constructed using a new diisophthalate ligand with active pyridyl sites. 1-Eu exhibits highly efficient luminescent sensing for Cu2+ ions and selective CO2 capture.
Co-reporter:Li-Yun Du ; Wen-Juan Shi ; Lei Hou ; Yao-Yu Wang ; Qi-Zhen Shi ;Zhonghua Zhu
Inorganic Chemistry 2013 Volume 52(Issue 24) pp:14018-14027
Publication Date(Web):December 2, 2013
DOI:10.1021/ic401765r
Three new coordination polymers, [Ag4(H2bpz)4(SO4)2]·H2O (1), [Ag2(H2bpz)2(SO4)]·3H2O (2), and [Ag3(H2bpz)4](SO4)2/3(OH)5/3·4H2O (3) have been solvothermally synthesized with Ag2SO4 and flexible ligand 3,3′,5,5′-tetramethyl-4,4′-bipyrazole (H2bpz) in different solvents and temperatures. Complex 1 is a 2-fold interpenetrated three-dimensional (3D) framework with an uncommon (3,5)-connected hms topology. Complex 2 is a structural isomer of 1 and shows a three-connected 2D ths net consisting of interesting 3-fold and 2-fold heterochiral helical chains. Complex 3 discloses a grid layer structure, containing heterochiral helical chains and an unusual meso-helix. More interestingly, three sets of layers in 3 stack in different directions, affording an unprecedented 2D + 2D + 2D → 3D polycatenating cationic framework with 1D + 3D porous systems. In 1–3, H2bpz exhibit exobidentate bridging fashions with wide-ranged interpyrazole tilting angles and changeable coordination configurations, such as cis and trans fashions in 1 and 3 and uniform trans fashion in 2. These lead to the isomeric [Ag(H2bpz)]n arrays of wavelike and helical chains in 1 and 2, respectively. Complexes 1–3 display solid-state photoluminescence stemming from the ligand-centered fluorescent emissions of H2bpz. Because of the highly polar framework, 3 shows excellent adsorption selectivity for CO2 over N2.
Co-reporter:Lei Hou, Li-Na Jia, Wen-Juan Shi, Li-Yun Du, Jiang Li, Yao-Yu Wang and Qi-Zhen Shi
Dalton Transactions 2013 vol. 42(Issue 18) pp:6306-6309
Publication Date(Web):27 Mar 2013
DOI:10.1039/C3DT50506E
Combining Co2 clusters with mixed H2bpdc and H2bpz ligands creates an unprecedented 3-fold interpenetrated 5-connected porous framework, which possesses the fascinating double-walled nanotubes structure assembled from nonuple and triple helices, and exhibits gas sorption properties.
Co-reporter:Xin Zhang, Lei Hou, Bo Liu, Lin Cui, Yao-Yu Wang, and Biao Wu
Crystal Growth & Design 2013 Volume 13(Issue 7) pp:3177-3187
Publication Date(Web):May 28, 2013
DOI:10.1021/cg400579w
Under solvothermal conditions, six new Zn(II) coordination polymers, [(CH3)2NH2]2[Zn(L)]·2H2O (1), [Zn2(L)(py)2] (2), [Zn2(L)(bpe)2]·bpe·6H2O (3), [Zn2(L)(bpe)(DMA)(H2O)]·5H2O (4), [Zn2(L)(bpy)0.5(H2O)2]·2.5H2O (5), and [Zn2(L)(bpe)(H2O)]·3H2O (6) [H4L = 5,5′-(p-xylylenediamino)-1,1′,3,3′-(benzenetetra-carboxylic acid), py = pyridine, bpy = 4,4′-dipyridine and bpe = 1,2-bis(4-pyridyl)ethane], have been synthesized by employing a flexible tetracarboxylic acid H4L and different auxiliary pyridine-based ligands. In 1–6, all L4– ligands are 4-connected nodes; however, the diverse configurations of the two terminal isophthalate units of L4– around the central −NHCH2PhCH2NH– spacer lead to various topological nets. 1 shows a three-dimensional (3D) 2-fold interpenetrated 4-connected dia network resulting from the vertical configuration of the two isophthalate units of L4–. 2 displays a 3D (4,4)-connected pts net in which the two isophthalate units of L4– adopt a parallel configuration. The two isophthalate units of L4– in 3 are also almost parallel, resulting in an intriguing 3D 2-fold interpenetrated network with the (4,4)-connected bbf net. 4 is a two-dimensional bilayer structure, extending into a 3D supramolecular framework through interlayer hydrogen-bonding interactions. 5 and 6 disclose similar 3D structural architectures, in which the two isophthalate units of L4– are almost vertical and exhibit tetrahedral topological nodes, inducing a rare (4,5)-connected xww net and an unprecedented (4,6)-connected network, respectively. The thermal stabilities and luminescent properties of 1–6 have also been studied in detail. The complexes exhibit intense solid-state fluorescent emissions at room temperature.
Co-reporter:Li-Na Jia, Lei Hou, Lei Wei, Xiao-Jing Jing, Bo Liu, Yao-Yu Wang, and Qi-Zhen Shi
Crystal Growth & Design 2013 Volume 13(Issue 4) pp:1570-1576
Publication Date(Web):March 14, 2013
DOI:10.1021/cg301810y
Five isostructural three-dimensional (3D) lanthanide (Ln) frameworks [LnCl(bpdc)(DMF)] (Ln = La (1), Ce (2), Pr (3), Nd (4), and Sm (5), H2bpdc = 4,4′-biphenyl-dicarboxylic acid, DMF = N,N-dimethylformamide) have been solvothermally synthesized and characterized by TGA, IR, and X-ray single crystal diffraction. The frameworks contain unusual Ln-carboxylate/Cl chains, and which are extended by bpdc2- linkers to form 4-connected sra networks with 1D rhombic channels. The effect of lanthanide contraction induces the decreases of average Ln–O and Ln–Cl distances from La to Sm. 4 exhibits strong characteristic luminescence of Nd3+ ions in the near-infrared (NIR) region, resulting from the sensitization of bpdc2–. 3 displays weak NIR emission due to the inefficient sensitization of Pr3+ ions. The depopulation of the Stark levels and possible antiferromagnetic interactions within the Ln-carboxylate/Cl chains lead to the continuous decreases of χMT for 2–4 along the decreasing temperatures.
Co-reporter:Wen-Juan Shi, Lei Hou, Wen Zhao, Ling-Yue Wu, Yao-Yu Wang, Qi-Zhen Shi
Inorganic Chemistry Communications 2011 Volume 14(Issue 12) pp:1915-1919
Publication Date(Web):December 2011
DOI:10.1016/j.inoche.2011.09.010
A new three-dimensional terbium-carboxylate framework [Tb4L3(H2O)9]·7H2O (1) [(H4L = 4,4′-(hexafluoroisopropylidene)diphthalic acid)] has been hydrothermally synthesized and structurally characterized. The framework contains Tb2 and Tb4 clusters, and exhibits an unprecedented 4-nodal (3,4,5,8)-connected topology. In addition, the thermogravimetric analysis, luminescent and magnetic properties were investigated.A new terbium metal-organic framework featuring an unprecedented 4-nodal (3,4,5,8)-connected topology has been constructed by the assembly of Tb2 and Tb4 clusters and 4,4′-(hexafluoroisopropylidene)diphthalate tetracarboxylate ligand, which exhibits both antiferromagnetic and strong luminescent properties.Highlights► A new terbium-carboxylate framework possessing Tb2 and Tb4 clusters. ► The framework displays an unprecedented 4-nodal (3,4,5,8)-connected net. ► The framework exhibits both antiferromagnetic and green luminescent properties.
Co-reporter:Bo Liu, Hui-Fang Zhou, Lei Hou, Zhonghua Zhu and Yao-Yu Wang
Inorganic Chemistry Frontiers 2016 - vol. 3(Issue 10) pp:NaN1331-1331
Publication Date(Web):2016/08/26
DOI:10.1039/C6QI00282J
A chiral Cu(II) metal–organic framework, [H2N(CH3)2]2[Cu(L)]·5.5DMF (1), was constructed using a diisophthalate ligand with an active pyridyl site, 2,6-di(3′,5′-dicarboxylphenyl)pyridine (H4L). The structure possesses interesting polar channels based on interweaving heterochiral [4 + 2] helices, which contains multiple CO2 binding sites, leading to highly selective capture of CO2 over CH4. Grand canonical Monte Carlo simulations identified the multiple adsorption sites in 1 for CO2.
Co-reporter:Li Zhang, Lei Hou, Xin Zhao, Zengqi Zhang, Yongsong Wang and Jun Li
Inorganic Chemistry Frontiers 2017 - vol. 4(Issue 2) pp:NaN367-367
Publication Date(Web):2016/12/15
DOI:10.1039/C6QI00381H
In this paper, we designed and synthesized three novel free-base imidazolyl porphyrins via the Macdonald [2 + 2] method, and their reactions with different metal ions afforded three new metalloporphyrin frameworks (MPFs) [Co(tBu-Ph)2(Im-Ph)2Por]·2DMF (1), [Co(F3-Ph)2(Im-Ph)2Por]·1.5DMF (2), and [Fe(Me2N, F4-Ph)2(Im-Ph)2Por]·3DMF (3), which display rich structural diversity. Complexes 1 and 2 are isostructural two-dimensional (2D) grid layers, which feature the rare rotaxane-like bilayer and an offset-stacking ABCD fashion of layers, as well as the significantly saddled porphyrin macrocycles. Differently, complex 3 forms a 4-connected lvt 3D framework with the slightly ruffled porphyrin macrocycles, which contains not only interesting helical channels but also uncommon tetrahedral cages. Gas adsorption studies of three complexes reveal the moderate CO2 adsorption capacity. Meanwhile, all three complexes exhibit preferable catalytic activity for ethylbenzene oxidation.
Co-reporter:Bo Liu, Wei-Ping Wu, Lei Hou and Yao-Yu Wang
Chemical Communications 2014 - vol. 50(Issue 63) pp:NaN8734-8734
Publication Date(Web):2014/05/22
DOI:10.1039/C4CC03049D
Four uncommon isostructural nanocage-based 3D Ln-MOFs, 1-Ln (Ln = Eu, Tb, Gd and Dy), were constructed using a new diisophthalate ligand with active pyridyl sites. 1-Eu exhibits highly efficient luminescent sensing for Cu2+ ions and selective CO2 capture.
Co-reporter:Lei Hou, Li-Na Jia, Wen-Juan Shi, Li-Yun Du, Jiang Li, Yao-Yu Wang and Qi-Zhen Shi
Dalton Transactions 2013 - vol. 42(Issue 18) pp:NaN6309-6309
Publication Date(Web):2013/03/27
DOI:10.1039/C3DT50506E
Combining Co2 clusters with mixed H2bpdc and H2bpz ligands creates an unprecedented 3-fold interpenetrated 5-connected porous framework, which possesses the fascinating double-walled nanotubes structure assembled from nonuple and triple helices, and exhibits gas sorption properties.
Co-reporter:Li-Yun Du, Hui Wang, Ge Liu, Dong Xie, Fu-Sheng Guo, Lei Hou and Yao-Yu Wang
Dalton Transactions 2015 - vol. 44(Issue 3) pp:NaN1119-1119
Publication Date(Web):2014/11/05
DOI:10.1039/C4DT03129F
Employing an uninvestigated eight N-donor bitriazole ligand, 5′-(pyrazin-2-yl)-2H,4′H-3,3′-bi(1,2,4-triazole) (H2pzbtz), five complexes, {[Zn2(pzbtz)(SO4)(H2O)2]·2H2O}n (1), {[Cd(pzbtz)]·3H2O}n (2), [Zn3(Hpzbtz)2(SO4)2(H2O)6] (3), [Co(Hpzbtz)2(H2O)2] (4) and {[Co2(pzbtz)2(H2O)2]·4H2O}n (5), have been solvothermally synthesised by altering the reaction solvents and temperatures. Complex 1 shows a three-dimensional (3D) framework with a very rare (3,5)-connected fsc-3,5-Cmce-2 topology. Complex 2 exhibits a (4,4)-connected 3D pts framework with 1D channels. Complexes 3 and 4 are discrete trinuclear and mononuclear molecules, respectively. Complex 5 presents a chiral 3D framework based on a novel trinuclear Co3(tr)4 cluster and features an unusual six-connected lcy topology. In the five complexes, H2pzbtz show a very variety of geometrical configurations and coordination modes. Due to the planarity of H2pzbtz, complexes 1–3 display strong photoluminescence; in particular, 1 features highly selective luminescent sensing for the Cu2+ ion and nitrobenzene molecule. In addition, 2 shows highly selective adsorption for CO2 over CH4, and 5 exhibits antiferromagnetic exchange interactions among the Co2+ ions.
![[1,1':2',1''-Terphenyl]-3,3'',4',5,5',5''-hexacarboxylic acid](/data/chemimg/3717300/1810726-43-2.png)
![[1,1':2',1''-Terphenyl]-3,3'',4',5,5',5''-hexacarboxylic acid](/data/chemimg/3717300/1810726-43-2_b.png)
![Benzoic acid, 4-[5-(2-pyrazinyl)-1H-1,2,4-triazol-3-yl]-](/data/chemimg/3717100/1708928-75-9.png)
![Benzoic acid, 4-[5-(2-pyrazinyl)-1H-1,2,4-triazol-3-yl]-](/data/chemimg/3717100/1708928-75-9_b.png)
![[1,1'-Biphenyl]-2,3',5-tricarboxylic acid](/data/chemimg/3717000/1654751-54-8.png)
![[1,1'-Biphenyl]-2,3',5-tricarboxylic acid](/data/chemimg/3717000/1654751-54-8_b.png)
![1H-1,2,4-Triazole, 1,1'-[[1,1'-biphenyl]-4,4'-diylbis(methylene)]bis-](/data/chemimg/102600/960041-69-4.png)
![1H-1,2,4-Triazole, 1,1'-[[1,1'-biphenyl]-4,4'-diylbis(methylene)]bis-](/data/chemimg/102600/960041-69-4_b.png)
![2,6-Bis[(4R)-4-tert-butyl-2-oxazolin-2yl]pyridine](/data/chemimg/1018200/185346-17-2.png)
![2,6-Bis[(4R)-4-tert-butyl-2-oxazolin-2yl]pyridine](/data/chemimg/1018200/185346-17-2_b.png)
![2,6-Bis((3aS,8aR)-8,8a-dihydro-3aH-indeno[1,2-d]oxazol-2-yl)pyridine](/data/chemimg/119100/185346-09-2.png)
![2,6-Bis((3aS,8aR)-8,8a-dihydro-3aH-indeno[1,2-d]oxazol-2-yl)pyridine](/data/chemimg/119100/185346-09-2_b.png)
![1H-Imidazo[4,5-f][1,10]phenanthroline](/data/chemimg/129500/171565-43-8.png)
![1H-Imidazo[4,5-f][1,10]phenanthroline](/data/chemimg/129500/171565-43-8_b.png)
![Pyridine, 4,4'-[methylenebis(thio)]bis-](/data/chemimg/1004400/91091-06-4.png)
![Pyridine, 4,4'-[methylenebis(thio)]bis-](/data/chemimg/1004400/91091-06-4_b.png)
![Phenol, 2-[[(2-hydroxyphenyl)imino]methyl]-6-methoxy-](/data/chemimg/3006300/1761-30-4.png)
![Phenol, 2-[[(2-hydroxyphenyl)imino]methyl]-6-methoxy-](/data/chemimg/3006300/1761-30-4_b.png)
![[1,1'-Biphenyl]-3,3'-dicarboxylic acid](/data/chemimg/592200/612-87-3.png)
![[1,1'-Biphenyl]-3,3'-dicarboxylic acid](/data/chemimg/592200/612-87-3_b.png)
