Huo Jianqiang, Li Haiqiang, Yu Donghui, Arulsamy Navamoney
College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
Department of Chemistry, 1000 E. University AVE, University of Wyoming, Laramie, WY 82071-2000, USA.
Inorganica Chim Acta. 2020 Mar 1;502. doi: 10.1016/j.ica.2019.119310. Epub 2019 Dec 2.
Three new metal-organic complexes [Cd(TIPA)(suc)(NO)·1/2HO] (), [Ni(TIPA)(tda)(HO)·1/4HO] () and [Cd(TIPA)(tda)·11/2HO] () were synthesized via rigid tripodal ligand tris(4-(1H-imidazol-1-yl)phenyl)amine (TIPA) and three dicarboxylic acids; either succinic acid (Hsuc) or 2,5-thiophenedicarboxylic acid (Htda). Crystallographic data for - reveal three-dimensional (3D) networks and channels in the structures. The structure of is unique featuring an interpenetrating 2D network, 2D + 2D → 3D, with the two associated 2D networks existing in two opposite spiral channels. TGA plots exhibit a loss of mass corresponding to the loss of the solvated water molecules in the 100 - 200 °C temperature region and begin to lose additional fragments only at T > 300 °C revealing the robust nature of the 3D framework in the complexes. The metal-organic frameworks (MOFs) are screened for their potential application in the detection and removal of environmentally hazardous industrial pollutants. Fluorescence emission spectra for and show that the two MOFs are capable of sensing nitrobenzene (NB), with the nickel complex exhibiting significantly higher sensing ability. Powder XRD data measured for and and those of NB-treated and show significant differences in their patterns, providing further support for the strong interaction between the MOF complexes and NB. The fluorescence emission observed for is more effectively quenched by the presence of Fe than the series of 17 other metal ions investigated. Complex possesses some ability to adsorb inorganic pollutants.
通过刚性三脚架配体三（4-（1H-咪唑-1-基）苯基）胺（TIPA）与三种二羧酸（琥珀酸（Hsuc）或2,5-噻吩二甲酸（Htda））合成了三种新型金属有机配合物[Cd（TIPA）（suc）（NO）·1/2H₂O]（）、[Ni（TIPA）（tda）（H₂O）·1/4H₂O]（）和[Cd（TIPA）（tda）·11/2H₂O]（）。 - 的晶体学数据揭示了结构中的三维（3D）网络和通道。 的结构独特，具有互穿的二维网络，2D + 2D → 3D，两个相关的二维网络存在于两个相对的螺旋通道中。热重分析（TGA）曲线显示在100-200°C温度范围内质量损失对应于溶剂化水分子的损失，并且仅在T>300°C时才开始失去额外的碎片，这揭示了配合物中3D框架的稳定性。对金属有机框架（MOF）进行了筛选，以评估它们在检测和去除环境有害工业污染物方面的潜在应用。 和 的荧光发射光谱表明，这两种MOF能够传感硝基苯（NB），镍配合物 表现出明显更高的传感能力。对 和 以及经NB处理的 和 测量的粉末X射线衍射（XRD）数据显示它们的图谱存在显著差异，这为MOF配合物与NB之间的强相互作用提供了进一步的支持。与所研究的其他17种金属离子系列相比， 的存在能更有效地淬灭观察到的 的荧光发射。配合物 具有一定的吸附无机污染物的能力。
