Yang Liu, Cao Li, Li Xiao, Qin Chao, Zhao Liang, Shao Kui-Zhan, Su Zhong-Min
Institute of Functional Material Chemistry, Local United Engineering Lab for Power Battery, Department of Chemistry, Northeast Normal University, Changchun, 130024 Jilin, People's Republic of China.
Dalton Trans. 2017 Jun 13;46(23):7567-7576. doi: 10.1039/c7dt01306j.
Four metal-organic frameworks, namely [Cd(tib)(btb)(HO)]·NO·2.5DMF (1), [Cd(tib)(Hdhbqdc)(NO)]·6HO (2), [Co(tib)(1,4-ndc)]·2DMF (3), and [Cu(tib)(2,6-ndc)(HO)]·2NO·2HO (4), were synthesized based on 1,3,5-tris(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 a binuclear Cd cluster with (3,3,6)-connected (6)(6·8) 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. Moreover, compounds 1 and 2 can be used as fluorescent sensors sensing small molecules with high selectivity. In this context, we selected the typical toxic explosives, TNP, namely 2,4,6-trinitrophenol and NB, namely nitrobenzene, as examples to investigate the properties of sensing. Furthermore, the magnetic properties of compounds 3 and 4 are investigated.
基于1,3,5-三（1-咪唑基）苯和多种羧酸配体合成了四种金属有机框架，即[Cd(tib)(btb)(H₂O)]·NO₃·2.5DMF (1)、[Cd(tib)(Hdhbqdc)(NO₃)]·6H₂O (2)、[Co(tib)(1,4-ndc)]·2DMF (3) 和 [Cu(tib)(2,6-ndc)(H₂O)]·2NO₃·2H₂O (4)。它们通过元素分析、红外光谱（IR）、粉末X射线衍射（PXRD）、热重分析（TGA）和单晶X射线衍射进行了表征。化合物1是由双核Cd簇构建的具有(3,3,6)-连接(6)(6·8)拓扑结构的三维框架。化合物2呈现出具有(3,4)-连接拓扑结构的二维波浪层状结构，化合物3展示出具有(3,5)-连接拓扑结构的二重互穿网络。化合物4可被视为三重互穿框架。此外，化合物1和2可用作荧光传感器，对小分子具有高选择性传感。在此背景下，我们选择典型的有毒爆炸物TNP，即2,4,6-三硝基苯酚和NB，即硝基苯，作为实例来研究传感性能。此外，还研究了化合物3和4的磁性。
