文献类型：期刊文献

英文题名：A coumarin-based fluorescent and colorimetric chemosensor for rapid detection of fluoride ion

作者：Ma, Liulei[1,2];Leng, Taohua[3];Wang, Kai[1,2];Wang, Chengyun[1,2];Shen, Yongjia[1,2];Zhu, Weihong[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]Shanghai Inst Qual Inspect & Tech Res, Natl Food Qual Supervis & Inspect Ctr Shanghai, Shanghai 200233, Peoples R China

年份：2017

卷号：73

期号：10

起止页码：1306

外文期刊名：TETRAHEDRON

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000394477300002)】；

基金：We gratefully acknowledge the financial support by the Natural Science Foundation of Shanghai (16ZR1408000), and the National Key Program of China (2016YFA0200302).

语种：英文

外文关键词：Coumarin; Thiosemicarbazone; Fluorescent probe; Fluoride anion

摘要：A novel coumarin-based compound 1 featuring thiosemicarbazone as binding unit, was reported as a colorimetric and fluorescent probe for the detection of fluoride anion. The addition of F- to a solution of probe 1 in tetrahydrofuran resulted in evident naked-eye color change from green-yellow to orange-red under daylight and obvious fluorescence quenching within 3 s. And the detection limit toward F- was calculated to be as low as 2.16 x 10(-7) mol/L.H-1 NMR titrations proved that the interaction between 1 and fluoride ion: hydrogen bond at low fluoride ion concentration, deprotonation at high fluoride ion concentration. Besides, it exhibited highly sensitivity and selectivity for F- over other examined ions (Cl-, Br-, r, Aco(-), NO3-, HSO-4, H2PO(4)(-)) in tetrahydrofuran solution. (C) 2017 Elsevier Ltd. All rights reserved.