光气
部分
铕
化学
荧光
苯并咪唑
光化学
检出限
肉眼
氯化物
有机化学
色谱法
光学
离子
物理
作者
Yu‐Fei Song,Wei-Na Wu,Yuan Wang,Xiaolei Zhang,Yunchang Fan,Zhi-Hong Xu
标识
DOI:10.1016/j.saa.2022.121553
摘要
Phosgene (carbonyl chloride, COCl2) is a widely used colorless gas in organic synthesis. However, its high toxicity sets a severe potential damage of public safety. As the fluorescence method has the advantages of simple operation and real-time detection of phosgene, it is extremely important to develop a fluorescent phosgene probe for public health and safety. This study aimed to present a simple Eu3+ complex (1) with 2-hydroxyl-1H-benzimidazole moiety as a novel phosgene probe. Probe 1 exhibited characteristic emission of Eu3+ in CH3CN solution, which was specifically quenched after encountering phosgene. The change in the solution color from light red to dark could be easily distinguished with the naked eye under a 365 nm ultraviolet lamp. Finally, the test paper with probe 1 was fabricated for effortless, selective, and visual detection of phosgene gas.
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