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Carbonized polymer dots for the sensitive and selective analysis of chlortetracycline based on the aggregation induced emission.
- Source :
- New Journal of Chemistry; 10/7/2023, Vol. 47 Issue 37, p17293-17302, 10p
- Publication Year :
- 2023
-
Abstract
- In this study, carbonized polymer dots (CPDs) were first proposed for the quantitative detection of chlortetracycline (CTC) based on aggregation induced emission. CPDs were synthesized by a one-step hydrothermal assay using polyethylene imine as the sole precursor. CPDs showed bright blue fluorescence under UV light (λ<subscript>Ex</subscript> 350 nm and λ<subscript>Em</subscript> 465 nm), with a quantum yield of 14.58%. There was a significant fluorescence enhancement for the CPDs + CTC system. When the concentration of CTC increased, the fluorescence color of CPDs displayed a significant change from bright blue to dark blue with the maximum emission shifting from 465 nm to 430 nm. Furthermore, the lifetime of CPDs + CTC increased from 7.12 ns to 11.26 ns, an increment of 4.14 ns, which was ascribed to the aggregation induced emission of CTC in the presence of CPDs. There was a good linear response between the fluorescence intensity of CPDs and the concentration of CTC from 0.1 μM to 120 μM with a limit of detection of 40 nM. Therefore, an excellent fluorescence probe was successfully prepared for the detection of CTC and its application in real samples was confirmed. [ABSTRACT FROM AUTHOR]
- Subjects :
- FLUORESCENCE
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Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 47
- Issue :
- 37
- Database :
- Complementary Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 173860844
- Full Text :
- https://doi.org/10.1039/d3nj02474a