两种用于4-硝基苯酚荧光识别的金属-有机配位聚合物  

Two Metal-Organic Coordination Polymer for Fluorescence Detection of 4-Nitrophenol

作　　者：胡卓 骆然 汪淑华 张宁 陈超 HU Zhuo;LUO Ran;WANG Shu-Hua;ZHANG Ning;CHEN Chao(Key Laboratory of Jiangxi Province for Environment and Energy,College of Chemistry, Nanchang University, Nanchang 330031, China)

机构地区：[1]南昌大学化学学院江西省环境及能源重点实验室

出　　处：《无机化学学报》2019年第9期1586-1592,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21561020,21661020,21663016)资助项目

摘　　要：选择刚性的2,6-双(苯并咪唑基)吡啶(H2BBP)作为配体,以对苯二甲酸(BDC)作为第二配体,通过自组装的方法与过渡金属形成了2种新型的1D链状金属-有机配位聚合物[Zn(H2BBP)(BDC)]n(1)和{[Cd2(H2BBP)2(BDC)2]·3H2O}n(2)。利用单晶X射线衍射、热重等表征方法对化合物1、2进行了结构分析。由于化合物1中金属离子与BDC配体羧基都是通过单齿配位,而化合物2中的金属离子是单双齿杂合配位,导致化合物1与化合物2中的一维zigzag链夹角不同。利用荧光光谱法对化合物1、2进行了4-硝基苯酚(4-NP)检测研究,结果表明4-NP对化合物1、2均有较强的荧光淬灭作用,且化合物1的检测限可低至30.96μg·L-1。Two new 1D chain luminescence metal-organic coordination polymers [Zn(H2BBP)(BDC)]n (1) and {[Cd2(H2BBP)2(BDC)2]·3H2O}n (2) were prepared by hydrothermal method using the rigid 2,6-bis(benzimidazolyl)pyridine (H2BBP) and ancillary ligand terephthalic acid (BDC) as the ligands. The metal ion in compound 1 was coordinated with the carboxyl group of the BDC ligand by the monodentate mode, while the metal ion in the compound 2 was monodentate-bidentate heterozygous coordination, which results in the different angles of 1D zigzag chain in compound 1 and compound 2. 4-Nitrophenol (4-NP) detection of compounds 1 and 2 was carried out by fluorescence spectroscopy. The results show that 4-NP has strong fluorescence quenching effect on compounds 1 and 2, and the detection limit of compound 1 could be as low as 30.96 μg·L^-1. CCDC: 1906736, 1;1906737, 2.

关 键 词：金属-有机配位聚合物 晶体结构 荧光检测 4-硝基苯酚 

分 类 号：O614.24[理学—无机化学] O614.242[理学—化学]