期刊
DYES AND PIGMENTS
卷 177, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2020.108274
关键词
Fluorescent probe; Ratiometric response; Hydrogen selenide; Visual detection
资金
- Taiyuan University of Science and Technology Scientific Research Initial Funding [20192059]
H2Se has been widely applied, and its release will cause serious human health and environmental effects. It is urgent to develop facile tool and reliable method for the determination of H2Se. Here, we introduce a concisely synthesized molecular HBT-Se, with a specially designed H2Se trapper 2-(iodomethyl)benzoate and a typical ESIPT fluorophore. The free HBT-Se exhibited blue fluorescence owing to the blocked ESIPT (exited state intramolecular proton transfer) process, while the 2-(iodomethyl)benzoate group could undergo a cascade reaction with H2Se, unblocking the ESIPT process and bathochromically shifting fluorescence response. The sensing mechanism was also rigorously verified by H-1, Se-77 NMR and MS analyses. Additionally, HBT-Se features a sensitive, selective and quantitative determination of H2Se. With these satisfied properties, HBT-Se was further applied as a paper-based sensor for detection of gaseous H2Se, and the enhanced performances of HBT-Se will promote its potential value in further study of H2Se in environmental pollutant.
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