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Metal–organic frameworks constructed from tib and carboxylate acid ligands: selective sensing of nitro explosives and magnetic properties

Abstract

Four metal–organic frameworks, namely [Cd2(tib)(btb)(H2O)2]∙NO3∙2.5DMF (1), [Cd(tib)(H2dhbqdc)0.5(NO3)]∙6H2O (2), [Co(tib)(1,4-ndc)]∙2DMF (3), [Cu3(tib)2(2,6-ndc)2(H2O)2]∙2NO3∙2H2O (4), were synthesized based on 1,3,5-tri(1-imidazolyl)benzene and diverse carboxylic acid ligands. They have been characterized by elemental analysis, infrared spectroscopy (IR), powder X-ray diffraction (PXRD), thermogravimetric analyses (TGA) and single crystal X-ray diffraction. Compound 1 is a 3D framework constructed from binuclear Cd cluster with (3,3,6)-connected (63)2(69∙86) topology. Compound 2 exhibits a 2D wavy layered structure with (3,4)-connected topology and compound 3 displays a two-fold interpenetrating network with (3,5)-connected topology. Compound 4 can be regarded as a three-fold interpenetrating framework. Meanwhile, compounds 1 and 2 can be used as fluorescent sensors sensing small molecules with high selectivity. In the context, we selected the typical toxic explosives, TNP, namely 2,4,6-trinitrophenol and NB, namely nitrobenzene, as examples to investigate properties of sensing. Furthermore, magnetic properties of compounds 3 and 4 are investigated.

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Supplementary files

Publication details

The article was received on 12 Apr 2017, accepted on 08 May 2017 and first published on 09 May 2017


Article type: Paper
DOI: 10.1039/C7DT01306J
Citation: Dalton Trans., 2017, Accepted Manuscript
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    Metal–organic frameworks constructed from tib and carboxylate acid ligands: selective sensing of nitro explosives and magnetic properties

    L. Yang, L. Cao, X. Li, C. Qin, L. Zhao, K. Shao and Z. Su, Dalton Trans., 2017, Accepted Manuscript , DOI: 10.1039/C7DT01306J

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