期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 269, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2021.120789
关键词
Phosgene; Fluorescent probe; Ratiometric fluorescence signal; Test strip
类别
资金
- National Natural Science Foundation of China [22004095, 21877087]
- Scientific Research Foundation of Wuhan Institute of Technology [K202003]
- Natural Science Foundation of Hubei Province, China [2020CFB227]
A ratiometric fluorescent probe (NED) for detecting phosgene was developed, showing high sensitivity and selectivity, along with a paper test strip for visually detecting gaseous phosgene.
As a colorless, highly toxic and widely used chemical reagent, phosgene poses a potentially serious threat to public health and environmental safety. Therefore, there is an urgent need to develop a simple and sen-sitive method for detecting phosgene. In this work, a ratiometric fluorescent probe (NED) for phosgene was developed by utilizing 4-substituted 1,8-naphthimide unit as the fluorophore and ethylenediamine as the recognition moiety. The probe NED undergoes intramolecular cyclization reaction with phosgene, resulting in a remarkable ratiometric fluorescence response. The probe NED displays high sensitivity (LOD = 4.9 nM), excellent ratiometric fluorescence signal, and high selectivity toward phosgene over other relevant analytes. In addition, paper test strip capable of visually detecting gaseous phosgene has also been fabricated. (c) 2021 Elsevier B.V. All rights reserved.
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