文献类型：期刊文献

英文题名：Novel 2,1,3-benzothiadiazole derivatives used as selective fluorescent and colorimetric sensors for fluoride ion

作者：Wu, Jiefei[1,2,3];Lai, Guoqiao[3];Li, Zhifang[3];Lu, Yunxiang[4,5];Leng, Taohua[6];Shen, Yongjia[1,2];Wang, Chengyun[1,2]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]Hangzhou Normal Univ, Minist Educ, Key Lab Organosilicon Chem & Mat Technol, Hangzhou 310012, Zhejiang, Peoples R China;[4]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[5]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China;[6]Shanghai Inst Qual Inspect & Tech Res, Natl Food Qual Supervis & Inspect Ctr Shanghai, Shanghai 200233, Peoples R China

年份：2016

卷号：124

起止页码：268

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20154201411551);WOS:【SCI-EXPANDED(收录号:WOS:000368045600032)】；

语种：英文

外文关键词：Fluoride; Fluorescent sensor; Deprotonation; 2,1,3-Benzothiadiazole; Carbazole; Phenothiazine

摘要：Two novel 2,1,3-benzothiadiazole derivatives, used as calorimetric and fluorescent sensors for fluoride ion were designed, synthesized and characterized. These sensors contained single hydrogen-bond functional groups, which acted as interacting sites for fluoride ion. Both sensors displayed a red color in dimethyl sulfoxide solution. Binding studies revealed that they showed noticeable calorimetric and fluorescent responses only to F- among the eight anions tested (F-, Cl-, Br-, I-, AcO-, H2PO4-, HSO4- and NO3-). H-1 NMR titration proved that the interaction between compounds and fluoride ion: hydrogen bond at low fluoride ion concentration, deprotonation at high fluoride ion concentration. Moreover, those compounds showed high sensitivity and selectivity for fluoride ion by inhibiting the excited state intramolecular proton transfer processes, and the detective processes could be followed by direct visual observation. (C) 2015 Elsevier Ltd. All rights reserved.