Structural Diversity and Sensing Properties of Metal–Organic
Frameworks with Multicarboxylate and 1H‑Imidazol-4-yl-Containing
Ligands
Version 2 2018-01-16, 20:18
Version 1 2018-01-16, 20:12
Posted on 2018-01-16 - 20:18
Two
1H-imidazol-4-yl-containing ligands 1,3-di(1H-imidazol-4-yl)benzene (L1) and 4,4′-di(1H-imidazol-4-yl)biphenyl (L2) were employed to
react with corresponding metal salt together with varied carboxylate
ligands under hydro- and solvothermal conditions, and six new metal–organic
frameworks (MOFs) [Cd(L1)(oba)]·DMF (1), [Ni3(L1)2(BPT)2(H2O)4] (2), [Zn2(L1)2(HBPT)2]·H2O (3), [Ni(L1)(BPTC)0.5(H2O)2] (4), [Ni2(μ2-O)(L2)3(Hoba)2(H2O)2] (5), and
[Ni2(L2)3(BPTC)(H2O)2]·6H2O (6) [H2oba = 4,4′-oxybis(benzoic acid), H3BPT = biphenyl-3,4′,5-tricarboxylic acid, H4BPTC
= biphenyl-3,3′,5,5′-tetracarboxylic acid, DMF = N,N-dimethylformamide] were achieved and
structurally characterized. MOFs 1, 3, 4, and 5 are different two-dimensional networks,
which are further joined together by hydrogen bonds to generate three-dimensional
(3D) supramolecular frameworks. 2 is a (4,4)-connected
binodal 3D framework with a point symbol of {3·4·5·83}4{32·82·92}, while 6 is a diamond 3D framework. The results
show that coordination geometry of the metal centers and coordination
mode of the ligands play important roles in the formation of MOFs
with diverse structures. Moreover, luminescent studies showed that 1 and 3 represent highly efficient quenching
for detecting Fe3+ ions and acetone molecules. In addition, 6 exhibits selectively adsorption of CO2 over N2.
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Liu, Zhi-Qiang; Chen, Kai; Zhao, Yue; Kang, Yan-Shang; Liu, Xiao-Hui; Lu, Qing-Yi; et al. (2018). Structural Diversity and Sensing Properties of Metal–Organic
Frameworks with Multicarboxylate and 1H‑Imidazol-4-yl-Containing
Ligands. ACS Publications. Collection. https://doi.org/10.1021/acs.cgd.7b01572
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AUTHORS (9)
ZL
Zhi-Qiang Liu
KC
Kai Chen
YZ
Yue Zhao
YK
Yan-Shang Kang
XL
Xiao-Hui Liu
QL
Qing-Yi Lu
MA
Mohammad Azam
SA
Saud I. Al-Resayes
WS
Wei-Yin Sun