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Fluorescent sensing and selective adsorption properties of metal-organic frameworks with mixed tricarboxylate and 1H-imidazol-4-yl-containing ligands

Abstract

Two metal–organic frameworks (MOFs) based on 1,3-di(1H-imidazol-4-yl)benzene (L) and 1,3,5-tri(4-carboxyphenyl)benzene (H3BTB), namely [Co4(μ3-OH)2(L)(BTB)2(H2O)3]•5.6H2O (1) and [Cd3(L)2(BTB)2(μ2-H2O)]•7.4H2O (2), have been achieved. Compound 1 is a porous three-dimensional (3D) framework with butterfly-like tetranuclear clusters as 7-connected nodes, while 2 is a 3D net with different topology. Remarkably, compounds 1 and 2 exhibit selectively adsorption of CO2 over N2 and methyl orange (MO) dye molecules. Magnetic measurements revealed that there are antiferromagnetic interactions within the tetranuclear cluster in 1. Furthermore, the luminescent properties of 2 well dispersed in different solvents have also been investigated, and the results indicate that 2 can be considered as a potential luminescent probe for detection of ketone molecules.

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Publication details

The article was received on 15 May 2017, accepted on 13 Jun 2017 and first published on 13 Jun 2017


Article type: Paper
DOI: 10.1039/C7DT01759F
Citation: Dalton Trans., 2017, Accepted Manuscript
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    Fluorescent sensing and selective adsorption properties of metal-organic frameworks with mixed tricarboxylate and 1H-imidazol-4-yl-containing ligands

    Z. Liu, Y. Zhao, P. Wang, Y. Kang, M. Azam, S. I. Al-Resayes, X. Liu, Q. Lu and W. Sun, Dalton Trans., 2017, Accepted Manuscript , DOI: 10.1039/C7DT01759F

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