期刊论文

Yao, Zhiyi

英文

Talanta

0039-9140

2018

185

146-150

10.1016/j.talanta.2018.03.068

We have developed a novel fluorimetric probe based on a water soluble pyrene derivative, HPTS-DNP, for the detection of thiophenol with a turn-on signaling mode in 100% aqueous media. Compared with previous methods for fluorescent detection of thiophenol, this probe features simple preparation, excellent water-solubility, rapid responses, and extraordinary sensitivity and selectivity. The fluorescence intensity enhancement is up to several thousand folds after the NAS reaction. The LOD is as

本校为其他机构

We report a simple pyrene-based fluorescent probe, sodium 8-(2,4-dinitrophenoxy)pyrene-1,3,6-trisulfonate (HPTS-DNP), for the ultrasensitive and visual detection of thiophenol in 100% aqueous media. The sensing mechanism of this method is based on nucleophilic aromatic substitution on HPTS-DNP caused by thiophenol to afford a highly fluorescent product, 8-hydroxypyrene-1,3,6-trisulfonic acid trisodium salt (HPTS). The extremely low fluorescence background of HPTS-DNP and high quantum yield of HPTS ensure the superior sensing performance toward thiophenol, including rapid responses, off-on dete...