2-肼基苯并噻唑衍生物比色识别Cu^(2+)  

Colorimetric Identification of Cu^(2+) by 2-hydrazyl Benzothiazole Derivatives

作　　者：黄磊 周贤亚 包磊 陈宇 姜英豪 李超 胡雨阳 HUANG Lei;ZHOUXianya;Bao Lei;CHENG Yu;JIANG Yinghao;LI Chao;HUYuyang(Department of Experimental and Practical Teaching Management, West Anhui University, Lu'an 237012, China)

机构地区：[1]皖西学院实验实训教学管理部,安徽六安237012

出　　处：《皖西学院学报》2022年第2期70-74,共5页Journal of West Anhui University

基　　金：皖西学院自然科学重点项目(WXZR202117);大学生创新创业项目(S202110376063,S202110376036,wxxy2021028,wxxy2020039)。

摘　　要：以2-肼基苯并噻唑为母体,通过分别与二苯乙二酮、9,10-菲二酮缩合反应合成了探针L1和L2,并通过1H NMR对其结构进行了表征。紫外光谱实验研究表明:在乙腈溶剂中探针L2能够在更长波长下选择性、灵敏性地识别Cu^(2+),L2光谱检测限0.8 μmol/L,裸眼识别检测限5 μmol/L,均比L1高。初步机理推测证明了探针L2与Cu^(2+)作用为配体-金属电荷转移机理,两者结合比为2∶1。Probes L1 and L2 were synthesized from 2-hydrazinobenzothiazole by condensation reaction with 1, 2-diphenylethanedione and 9, 10-phenanthrenequinone. Their structures were characterized by 1H NMR. UV-visible spectrum experiments show that the probe L2 can selectively and sensitively recognize Cu^(2+) in acetonitrile solvent at longer wavelengths. L2 spectral detection limit of 0.8 μmol/L and naked eye detection limit of 5 μmol/L are all higher than L1. Preliminary mechanism speculation proves that probe L2 and Cu^(2+) are ligand-metal charge transfer mechanism with a binding ratio of 2∶1.

关 键 词：2-肼基苯并噻唑 Cu^(2+) 比色识别 

分 类 号：Q-334[生物学]