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One-step hydrothermal synthesis and optical properties of self-quenching-resistant carbon dots towards fluorescent ink and as nanosensors for Fe 3+ detection.
- Source :
-
RSC advances [RSC Adv] 2019 Mar 12; Vol. 9 (15), pp. 8290-8299. Date of Electronic Publication: 2019 Mar 12 (Print Publication: 2019). - Publication Year :
- 2019
-
Abstract
- In our work, blue photoluminescent N-doped carbon dots (CDs) were developed via a green and simple hydrothermal method with citric acid and polyvinyl pyrrolidone (PVP K-30) as the carbon source and the nitrogen source, respectively. The as-prepared CDs have a high fluorescent quantum yield of 30.21% and considerable luminescence stability. The fluorescence intensity of the CDs was found to be effective quenched when adding Fe <superscript>3+</superscript> ions to the CDs solution. The quenching phenomenon can be used to detect Fe <superscript>3+</superscript> ions within a linear range of 0-300 μM with a detection limit of 45.5 nmol L <superscript>-1</superscript> , which suggested its potential application in the detection of Fe <superscript>3+</superscript> ions. At the same time, we also noted the excellent self-quenching-resistant property of the as-prepared CDs in the solid state, and bright blue fluorescence was observed under UV excitation. What's more, the as-prepared CDs can also be used as fluorescent ink and were presented under UV excitation.<br />Competing Interests: There are no conflicts to declare.<br /> (This journal is © The Royal Society of Chemistry.)
Details
- Language :
- English
- ISSN :
- 2046-2069
- Volume :
- 9
- Issue :
- 15
- Database :
- MEDLINE
- Journal :
- RSC advances
- Publication Type :
- Academic Journal
- Accession number :
- 35518653
- Full Text :
- https://doi.org/10.1039/c8ra10570g