文献类型：期刊文献

英文题名：A new colorimetric and ratiometric chemodosimeter for mercury (II) based on triphenylamine and benzothiadiazolenovel

作者：Zhang, Qisong;Li, Yuhao;Zuo, Hujin;Wang, Chengyun;Shen, Yongjia[1]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China

年份：2017

卷号：332

起止页码：293

外文期刊名：JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY

收录：;EI(收录号：20240815594724);WOS:【SCI-EXPANDED(收录号:WOS:000387837300035)】；

基金：The project was supported by National Natural Science Foundation of China (Nos. 21576087, 21076078).

语种：英文

外文关键词：Triphenylamine; Benzothiadiazole; Colorimetric; Ratiometricmercury-sensing

摘要：A new near-infrared colorimetric and ratiometric fluorescent chemodosimeter for He detection was devised, with a donor-acceptor-donor (D-A-D) molecular configuration and containing a dithioacetal group served as a sensing unit, and with a large stokes shift over 160 nm. The oxidation reaction of Hg2+ broke the electron-donating interaction of dithioacetal moiety, and the obstruction in the intramolecular charge transfer (ICT) induced remarkable changes in the absorption and emission spectra. The sensor exhibited splendid selectivity and anti-interference performance towards Hg2+ over other cations (IC, Na+, Ag+, Fe2+, Co2+, Mn2+, Zn2+, Ca2+, Pb2+, Ni2+, Mg2+, Cu2+, Al3+, Fe3+). The mechanism was investigated by absorption and emission spectra together with H-1 NMR titration. (C) 2016 Elsevier B.V. All rights reserved.