A naphthalimide-based probe for phosgene sensing based on the phosgene-induced beckmann rearrangement
| Autor: | Wei Ye, Hong Zheng, Zhen-Yi Wu, Yue-Lin Huang, Yue-Ting Su |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Detection limit
Fluorophore Process Chemistry and Technology General Chemical Engineering 02 engineering and technology Chromophore 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Fluorescence 0104 chemical sciences chemistry.chemical_compound chemistry Beckmann rearrangement Phosgene 0210 nano-technology Acetonitrile |
| Zdroj: | Dyes and Pigments. 173:107854 |
| ISSN: | 0143-7208 |
| DOI: | 10.1016/j.dyepig.2019.107854 |
| Popis: | A new probe for selective and sensitive phosgene sensing in acetonitrile was developed. The sensing mechanism was based on the mechanism of the phosgene-induced Beckmann rearrangement of the naphthalimide fluorophore. An electron-withdrawing ketoxime, which was used as the phosgene receptor, was attached to the 4-position on the 1,8-naphthalimide chromophore to constituted a nonfluorescent probe. The reaction of phosgene with ketoxime induced a Beckmann rearrangement, which was followed by conversion of the nonfluorescent probe into the 4-acetamido-1,8- naphthalimide fluorophore, which emits bright blue fluorescence at 488 nm. The probe exhibited a detection limit of 6.3 nM for phosgene. In addition, the probe-loaded filter stripe for successful monitoring of gaseous phosgene was also demonstrated. |
| Databáze: | OpenAIRE |
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