A portable colorimetric and fluorescent sensor for the fast visual detection of phosgene. (February 2022)

• Record Type: Journal Article
• Authors: Bian, Yongning; Wang, Yaling; Yuan, Houqun; Bao, Guang-Ming; Su, Dongdong
• Is Part Of: Dyes and pigments. Volume 198(2022)
• Publication Date: 2022-02
• Subjects: Fluorescent sensor -- Colorimetric -- BODIPY -- Phosgene -- Test paper; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2021.110009
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: Phosgene is a suffocating toxic gas that seriously threatens human health and public security. In this work, we devised a colorimetric and fluorogenic chemosensor (BDY ) for phosgene by using 3, 5-dimethyl BODIPY as a fluorescent reporter and o -phenylenediamine as the recognition site. The BDY sensor displayed an obvious color change from yellow to pink in conjugation with a fluorescence turn-on response due to nucleophilic substitution and cyclization reactions with phosgene. BDY could detect phosgene with a rapid response (9 s), low detection limit (14 nM), and outstanding selectivity. Moreover, BDY -loaded test strips were prepared to serve as portable and sensitive kits for real-time visual monitoring phosgene with good performance. Graphical abstract: Image 1 Highlights: A colorimetric and ratiometric fluorescence dual-responsive chemosensor BDY was prepared to detect hypertoxic phosgene vapor. The sensor exhibited a fast (9 s) response toward phosgene with high sensitivity (LOD: 14 nM) and outstanding selectivity. The sensor was fabricated into portable test strips for real-time monitoring of phosgene. The BDY -based test kits could respond toward phosgene with color and fluorescence alteration.