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Continuous detection of HCl and NH3 gases with a high-performance fluorescent polymer sensor.
- Source :
-
New Journal of Chemistry . 8/21/2018, Vol. 42 Issue 16, p13367-13374. 8p. - Publication Year :
- 2018
-
Abstract
- A novel fluorescent triazine-based covalent organic polymer (COP-1) sensor for HCl and NH3 gases has been designed and synthesized. Both the COP-1 powders that were dispersed in solvents and the COP-1 film that was formed on the surface of quartz sheets exhibited stable fluorescence and a sensitive HCl/NH3 response. Immersion in HCl-bubbled solvents weakens and red-shifts the fluorescence emission of the COP-1 powders, owing to a protonation-induced charge transfer (CT). Subsequent injection of NH3 into the solvents recovers the fluorescence via deprotonation. Interestingly, the microporous COP-1 film also shows a similar fluorescence response to HCl/NH3 gas, with high sensitivity and good reversibility, which suggests that it could serve as a solid-state optical probe for continuous and quantitative detection of HCl and NH3 gases. The formation of the red-shifting hydrogen bonds is found to be the origin of the response. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FLUORESCENT polymers
*CHARGE transfer
Subjects
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 42
- Issue :
- 16
- Database :
- Academic Search Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 131127330
- Full Text :
- https://doi.org/10.1039/c8nj02344a