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F-doped silicon quantum dots as a novel fluorescence nanosensor for quantitative detection of new coccine and application in food samples.
- Source :
-
Microchemical Journal . Aug2022, Vol. 179, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- [Display omitted] • A novel F-doped silicon quantum dots were successfully synthesized by a one-pot hydrothermal method. • The resulting F-SiQDs exhibited conspicuous optical bleaching resistance and the fluorescence quantum yield reached 25.19%. • The obtained F-SiQDs achieved a high selectivity and sensitivity to new coccine, accompanied by fluorescence quenching. • The fluorescent nanosensor for detection of new coccine was productively demonstrated in food samples. As a kind of common colorant, new coccine has been applied in many scenes of daily life. In this study, innovative F-doped silicon quantum dots (F-SiQDs) which prepared by a facile one-step hydrothermal treatment were designed for the detection of new coccine. Systematic studies demonstrate that the obtained F-SiQDs exhibited excellent dispersibility and photostability, with the optimal emission at 475 nm and fluorescence quantum yield reached to 25.19%. The fluorescence intensity can be quenched by new coccine due to the principle of IFE, and the corresponding process was decreased rapidly within 1 min. At the same time, the quenching process showed a notable linear relationship within the concentration of new coccine range from 1–100 μmol/L and 100–200 μmol/L with the detection limits of 0.33 and 0.18 μmol/L, respectively. The developed F-SiQDs were successfully adopted to the determination of new coccine in food samples, and also achieved the desired detection results after being coated on the filter-paper. This work highlights the merits of simplicity, fast response and highly selective for new coccine detection, and implements a potential avenue for the utilization of F-SiQDs in the guidance of food safety and food management. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0026265X
- Volume :
- 179
- Database :
- Academic Search Index
- Journal :
- Microchemical Journal
- Publication Type :
- Academic Journal
- Accession number :
- 157420725
- Full Text :
- https://doi.org/10.1016/j.microc.2022.107453