Department of Chemistry, University College of Science, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India.
Inorg Chem. 2020 Dec 7;59(23):17758-17765. doi: 10.1021/acs.inorgchem.0c02985. Epub 2020 Nov 16.
A novel metal-organic framework (MOF), [Zn(tdca)(bppd)]·2DMF, has been synthesized solvothermally using the ligand thiophene-2,5-dicarboxylic acid (Htdca), coligand ,'-bis(4-pyridylmethylene)-1,4-benzenediamine (bppd), and Zn(NO). Single crystal X-ray crystallography reveals that the titled MOF is a three-dimensional pillared-layered MOF. A layer is constituted by a Zn(tdca) unit, and the layers are stabilized by the long hydrocarbon coligand, bppd, which acts as a pillar. A rectangular pore size of 11.42 × 8.12 Å is found in the framework. The porous framework is found to be an excellent fluorescence sensor for the detection of toxic Cd ion. The sensor shows high selectivity and sensitivity and a quick response toward Cd. The synthesized MOF is able to not only detect cadmium ions but also adsorb iodine in the gas phase. The MOF can adsorb ∼66% iodine, verified by thiosulfate-iodine titration and TG analysis. Adsorbed iodine can also be removed easily in acetonitrile as well as in -hexane, which shows that iodine can be reversibly loaded as well as unloaded into the framework.
一种新型的金属-有机骨架（MOF），[Zn(tdca)(bppd)]·2DMF，通过溶剂热法使用配体噻吩-2,5-二甲酸（Htdca）、共配体 ，'-双（4-吡啶亚甲基）-1,4-苯二胺（bppd）和 Zn(NO)合成。单晶 X 射线晶体学表明，标题 MOF 是一种三维的支柱层状 MOF。一个层由一个 Zn(tdca)单元构成，层由长烃共配体 bppd 稳定，bppd 作为支柱。在骨架中发现了一个 11.42×8.12 Å 的矩形孔径。多孔骨架被发现是一种用于检测有毒 Cd 离子的优异荧光传感器。该传感器对 Cd 表现出高选择性和灵敏度以及快速响应。所合成的 MOF 不仅能够检测镉离子，还能够在气相中吸附碘。MOF 可以吸附约 66%的碘，通过硫代硫酸钠-碘滴定和 TG 分析验证。吸附的碘也可以很容易地在乙腈和正己烷中去除，这表明碘可以可逆地载入和卸载到骨架中。
