Yang Xue, Liu Wanting, Ren Yixia, Hou Xiufang, Li Jinfeng
Laboratory of New Energy and New Function Materials, Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an 716000, China.
Molecules. 2024 May 24;29(11):2475. doi: 10.3390/molecules29112475.
Detection of nitro pollutants is an important topic in environmental protection. A total of 3 Cd (II) complexes (-) based on 3 soft organic isomers, n-(3,5-dicarboxylato benzyloxy) benzoic acid ( = 2, 3 or 4-HDBB), and a linear N-donor ligand, 3-bis(imidazole-l-ylmethyl) benzene (3-bibz), have been synthesized hydrothermally. Structural diversity of Complexes - displays the architectural 2D or 3D change: Complex exhibits a 2D network featuring tri-nuclear metal units, Complex is a 3D framework based on similar tri-nuclear metal units, and Complex shows a 3D network with binuclear units. Fluorescent sensing properties exhibited in all these complexes have been discovered to detect nitrobenzene (NB) selectively and sensitively. In particular, Complex possesses high sensitivity for NB with the lowest detection limit of 1.15 × 10 M. The results of the theoretical calculation verified the fluorescence detection mechanism of NB by these Cd-based complexes. Therefore, these Cd-based complexes might be used as excellent luminescent sensors for NB.
硝基污染物的检测是环境保护中的一个重要课题。基于3种软有机异构体、n-(3,5-二羧基苄氧基)苯甲酸（= 2、3或4-HDBB）以及线性氮供体配体3-双(咪唑-1-基甲基)苯（3-bibz），通过水热法共合成了3种Cd(II)配合物(-)。配合物-的结构多样性呈现出二维或三维结构变化：配合物呈现出具有三核金属单元的二维网络结构，配合物是基于类似三核金属单元的三维骨架结构，配合物显示出具有双核单元的三维网络结构。已发现所有这些配合物均表现出荧光传感特性，能够选择性且灵敏地检测硝基苯（NB）。特别是，配合物对NB具有高灵敏度，最低检测限为1.15×10 M。理论计算结果验证了这些基于Cd的配合物对NB的荧光检测机理。因此，这些基于Cd的配合物可能用作NB的优良发光传感器。
