基于偶氮苯酚类的比色传感器识别阴离子  

Colorimetric Sensors for Anion Recognition Based on Benzeneazophenol

作　　者：林声声 何清运 周嘉敏 招铭朋 冯宗财 余彪 宋秀美 LIN Shengsheng;HE Qingyun;ZHOU Jiamin;ZHAO Mingpeng;FENG Zongcai;YU Biao;SONG Xiumei(Institute for Advanced Materials,Lingnan Normal University,Zhanjiang 524048,China;School of Chemistry and Chemical Engineering,Lingnan Normal University,Zhanjiang 524048,China)

机构地区：[1]岭南师范学院化学化工学院,广东湛江524048 [2]岭南师范学院新材料研究院,广东湛江524048

出　　处：《应用化学》2019年第12期1447-1455,共9页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(21805125);湛江市科技计划项目(2015A020203);大学生创新创业训练计划项目(201810579701)资助~~

摘　　要：设计合成了3个含酚羟基数量不同的偶氮苯化合物S1、S2和S3作为传感分子,研究S1、S2和S3对阴离子的比色识别,并探讨传感分子的结构与识别阴离子能力之间的联系。结果表明:传感分子S1、S2和S3对F-、H2PO4-和Ac O-比色识别灵敏度高。在CH3CN中S1、S2和S3的F-检测限达到1.25×10-7~3.62×10-7mol/L,S2、S3对H2PO4-和Ac O-的检测限也达同一数量级。S1、S2和S3对阴离子F-、H2PO4-和Ac O-比色识别能力取决于阴离子的空间构型、电荷密度和碱性共同作用的结果。1H NMR滴定结果表明,识别机理是S1、S2和S3的酚羟基与阴离子形成了分子间的氢键。Three colorimetric sensors S1 S2 and S3 based on azobenzene containing different numbers of active phenolic hydroxyl groups have been designed and synthesized. The sensors in CH3CN exhibit high sensitivity toward F- H2PO4- and AcO-. The detection limit of S1 S2 and S3 was determined to be 1 25×10^-7~3.62×10^-7mol/LforF-. ThesensitivityofsensorsS1 S2andS3foranionswereaffectedby the configuration charge density and basicity of anions. 1H NMR titration has been performed to study reaction mechanism which was considered to be direct consequence of hydrogen-bonding between the phenolic group of sensor and anion.

关 键 词：偶氮苯 比色识别 阴离子 化学传感器 酚羟基 

分 类 号：O625.6[理学—有机化学]