Li Wei-Dong, Li Jia-Le, Guo Xing-Zhe, Zhang Zhi-You, Chen Shui-Sheng
School of Chemistry and Chemical Engineering, Fuyang Normal University, Fuyang 236041, China.
Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China.
Polymers (Basel). 2018 Jun 6;10(6):622. doi: 10.3390/polym10060622.
Four new metal⁻organic coordination polymers [Cu(L)(mpa)]·3H₂O (), [Co(L)(mpa)]·H₂O (), [Zn(L)(mpa)]·H₂O (), and [Cd(L)(mpa)(H₂O)]·H₂O () were synthesized by reactions of the corresponding metal(II) salts based on mixed ligands of 1,4-di(1-imidazol-4-yl)benzene (L) and 4-methylphthalic acid (H₂mpa), respectively. The structures of the complexes were characterized by elemental analysis, FT-IR spectroscopy, and single-crystal X-ray diffraction. Compound exhibits a binodal 4-connected three dimensional (3D) architecture with (6⁵·8)- topology, while complexes and are isostructural and have two-dimensional (2D) layer structure with (4, 4) topology based on the binuclear metal subunits. Complex has the same 2D layer structure with (4, 4) topology as complexes and , but the inclined interpenetration of parallel sets of layers result in the formation with 2D + 2D → 3D framework. The activated sample shows selective CO₂ uptake over N₂. The photoluminiscent properties together with quantum yield (QY) and luminescence lifetime are also investigated for complexes and in the solid state at room temperature.
通过相应的金属（II）盐分别与1,4-二（1-咪唑-4-基）苯（L）和4-甲基邻苯二甲酸（H₂mpa）的混合配体反应，合成了四种新型金属有机配位聚合物[Cu（L）（mpa）]·3H₂O（）、[Co（L）（mpa）]·H₂O（）、[Zn（L）（mpa）]·H₂O（）和[Cd（L）（mpa）（H₂O）]·H₂O（）。通过元素分析、傅里叶变换红外光谱和单晶X射线衍射对配合物的结构进行了表征。化合物呈现出具有（6⁵·8）拓扑结构的双节点4连接三维（3D）结构，而配合物和是同构的，基于双核金属亚基具有（4,4）拓扑结构的二维（2D）层状结构。配合物与配合物和具有相同的（4,4）拓扑结构的二维层状结构，但平行层组的倾斜互穿导致形成2D + 2D → 3D框架。活化后的样品对CO₂的吸附具有选择性，优于N₂。还在室温下对配合物和的固态光致发光性质以及量子产率（QY）和发光寿命进行了研究。
