含混合三羧酸酯和1H-咪唑-4-基配体的金属有机框架的荧光传感与选择性吸附性能

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

作者信息

Liu Zhi-Qiang, Zhao Yue, Wang Peng, Kang Yan-Shang, Azam Mohammad, Al-Resayes Saud I, Liu Xiao-Hui, Lu Qing-Yi, Sun Wei-Yin

机构信息

Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.

出版信息

Dalton Trans. 2017 Jul 18;46(28):9022-9029. doi: 10.1039/c7dt01759f.

DOI:10.1039/c7dt01759f

PMID:28657629

Abstract

Herein, two metal-organic frameworks (MOFs), [Co(μ-OH)(L)(BTB)(HO)]·5.6HO (1) and [Cd(L)(BTB)(μ-HO)]·7.4HO (2), based on 1,3-di(1H-imidazol-4-yl)benzene (L) and 1,3,5-tri(4-carboxyphenyl)benzene (HBTB), respectively, have been achieved. Compound 1 is a porous three-dimensional (3D) framework with butterfly-like tetranuclear clusters as 7-connected nodes, and compund 2 is a 3D net with a different topology. Remarkably, compounds 1 and 2 exhibit selective adsorption of CO over N and methyl orange (MO) dye molecules. Magnetic measurements reveal that there are antiferromagnetic interactions within the tetranuclear cluster in 1. Furthermore, 2 was well-dispersed in different solvents, and their luminescent properties were investigated, and the results indicated that 2 could be considered as a potential luminescent probe for the detection of ketone molecules.

摘要

在此，已经成功制备了两种基于1,3-二(1H-咪唑-4-基)苯(L)和1,3,5-三(4-羧基苯基)苯(HBTB)的金属有机框架(MOF)，分别为[Co(μ-OH)(L)(BTB)(H₂O)]·5.6H₂O (1)和[Cd(L)(BTB)(μ-H₂O)]·7.4H₂O (2)。化合物1是一种具有蝴蝶状四核簇作为7连接节点的多孔三维(3D)框架，化合物2是具有不同拓扑结构的3D网络。值得注意的是，化合物1和2对CO具有比N₂和甲基橙(MO)染料分子更高的选择性吸附。磁性测量表明，1中的四核簇内存在反铁磁相互作用。此外，2在不同溶剂中分散良好，并对其发光性质进行了研究，结果表明2可被视为检测酮分子的潜在发光探针。