A Single Fluorescent Chemosensor for Simultaneous Discriminative Detection of Gaseous Phosgene and a Nerve Agent Mimic

Lintao Zeng, Hongyan Zeng, Lirong Jiang, Shan Wang, Ji Ting Hou, Juyoung Yoon

Research output: Contribution to journalArticlepeer-review

62 Scopus citations

Abstract

A fluorescent chemosensor has been developed for discriminative detection of phosgene and a nerve agent mimic diethyl chlorophosphate (DCP), which was comprised of an anthracene-carboxyimide fluorophore and o-phenylenediamine (OPD) reaction site. Upon phosphorylation of OPD, the chemosensor displays an obvious fluorescence turn-on response toward DPC at 588 nm with instant response and a low detection limit (88 nM). By contrast, the chemosensor exhibits a colorimetric and fluorescence enhancement response at 500 nm toward phosgene with fast response (<2 min), high selectivity, and a low detection limit (72 nM). Furthermore, chemosensor-loaded test membrane was fabricated for real-time, portable and efficient discriminative detection of trace amounts of gaseous phosgene and DCP vapor with different optical responses.

Original languageEnglish
Pages (from-to)12070-12076
Number of pages7
JournalAnalytical Chemistry
Volume91
Issue number18
DOIs
StatePublished - 17 Sep 2019

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