文献类型：期刊文献

英文题名：Reaction-based fluorescent probe for the selective and sensitive detection of thiophenols with a large Stokes shift and its application in water samples

作者：Zhang, Mengzhao[1,2,3];Leng, Taohua[3];Shen, Yongjia[1,2];Wang, Chengyun[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem & Mol Engn, Dept Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2018

卷号：143

期号：3

起止页码：756

外文期刊名：ANALYST

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000423680700021)】；

基金：The authors are grateful for financial support from the Natural Science Foundation of Shanghai (16ZR1408000) and the National Natural Science Foundation of China (No. 21576087).

语种：英文

摘要：Although widely used in organic synthesis, pharmaceuticals and agrochemicals, thiophenol has brought about a series of ecological problems due to its high toxicity. Therefore, the development of efficient methods to discriminate thiophenols from aliphatic thiols is of great importance. In this work, a new reaction-based turn-on red fluorescence probe for the detection of thiophenols has been developed for the first time by employing dicyanomethylene-4H-pyran (DCM) as a fluorescence reporter and 2,4-dinitrobenzene-sulfonate (DNBS) as a recognition unit. The probe displayed a highly selective and sensitive (63 fold-fluorescence enhancement) response to thiophenols over aliphatic thiols. Additionally, the probe also exhibited a large Stokes shift (159 nm) and the detection limit reached as low as 8.3 nM. Moreover, this probe was also proved suitable for the quantification of thiophenol in real environmental water samples.