可依次检测汞、硫离子的双功能比色传感器的设计与研究  

Design and Research of Dual Functional Colorimetric Sensor for Successive Detection of Hg^2+and S^2-

作　　者：程晓红[1] 代思思 和平[2] 屈少华[1] 汪竞阳[1] CHENG Xiaohong;DAI Sisi;HE Ping;QU Shaohua;WANG Jingyang(Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices,Hubei University of Arts and Science,Xiangyang 441053,China;College of Chemical Engineering,Hubei University of Arts and Science,Xiangyang 441053,China)

机构地区：[1]湖北文理学院低维光电材料与器件湖北省重点实验室,襄阳441053 [2]湖北文理学院化学工程学院,襄阳441053

出　　处：《材料导报》2020年第24期24010-24013,共4页Materials Reports

基　　金：湖北省自然科学基金(2018CFB454);湖北文理学院教师科研能力培育基金(2020kypyfy031);湖北文理学院学科开放基金(XK2020042)。

摘　　要：本工作报道了一种含二甲氨基二硫代甲酸基团的化合物C1,其可与汞离子形成稳定的络合物C1-Hg(Ⅱ),引起分子内电荷转移效率及紫外-可见吸收光谱的明显变化。同时,络合物C1-Hg(Ⅱ)亦可作为硫离子的比色传感器,通过间接的方法实现对硫离子的高效检测。在该络合物的溶液中加入硫离子之后,其最大吸收峰红移了近135 nm,溶液从浅黄色变为深红色,对硫离子的检出限低达1.5×10^-6 mol/L。重要的是,络合物C1-Hg(Ⅱ)具有较高的选择性,对除硫离子之外的其他阴离子无明显的光谱响应。In this work,compound C1 was designed and synthesized as a dual-functional sensor for Hg^2+and S^2-.In compound C1,the carbamodithioate unit had an exceptionally strong affinity towards Hg^2+and then formed the C1-Hg(Ⅱ)complex,which would induce the changes on intramolecular charge transfer(ICT)efficiency and the concomitant UV-vis spectra.Furthermore,the C1-Hg(Ⅱ)complex could serve as an indirect sensor towards sulfide anion.Upon the addition of S^2-,the absorption spectra of C1-Hg(Ⅱ)complex shifted by^135 nm with the color changing from light yellow to deep red.The detection limit was determined to be as low as 1.5×10^-6 mol/L and the mixture system displayed high selectivity to S^2-over other anions.

关 键 词：双功能传感器 比色法 偶氮苯 汞离子 硫离子 

分 类 号：O622.4[理学—有机化学]