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Highly sensitive and selective detection of triphosgene with a 2-(2'-hydroxyphenyl)benzimidazole derived fluorescent
Wen-Zhu Bi1,2, Yang Geng3, Wen-Jie Zhang1
1School of Pharmacy, Henan University of Chinese Medicine Zhengzhou China 450046 biwenzhu2018@hactcm.edu.cn maqiujuan104@126.com.
Abstract:
In this work, a 2-(2'-hydroxyphenyl)benzimidazole derived fluorescent probe, 2-(2'-hydroxy-4'-aminophenyl)benzimidazole (4-AHBI), was synthesized and its fluorescent behavior toward triphosgene were evaluated. The results showed that 4-AHBI exhibited high sensitivity (limit of detection, 0.08 nM) and excellent selectivity for triphosgene over other acyl chlorides including phosgene in CH2Cl2 solution. Moreover, 4-AHBI loaded test strips were prepared for the practical sensing of triphosgene.
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