One-Pot Hydrothermal Synthesis of Carbon Dots with Efficient Up- and Down-Converted Photoluminescence for the Sensitive Detection of Morin in a Dual-Readout Assay
| Autor: | Qun-Wei Shu, Jiaman Liang, Jia-Yu Li, Kejun Tan, Fang Zhang, Xiaoyan Deng, Mark T. Swihart, Xianping Chen, Yang Liu |
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| Rok vydání: | 2017 |
| Předmět: |
Detection limit
Quenching (fluorescence) Materials science Photoluminescence Analytical chemistry chemistry.chemical_element Quantum yield 02 engineering and technology Surfaces and Interfaces Morin 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Electrochemistry Hydrothermal synthesis General Materials Science 0210 nano-technology Luminescence Carbon Spectroscopy |
| Zdroj: | Langmuir : the ACS journal of surfaces and colloids. 33(4) |
| ISSN: | 1520-5827 |
| Popis: | Blue luminescent carbon dots (CDs) with a high photoluminescence (PL) quantum yield (48.3 ± 5.3%) were prepared by the one-pot hydrothermal reaction of citric acid with poly(ethylenimine) (PEI). The CDs display bright PL, narrow emission spectra, pH-dependent PL intensity, high photostability, and up-converted luminescence. The CDs exhibit a quenching of both down- and up-conversion PL in the presence of morin and thus serve as useful probes for morin detection. Both down- and up-conversion measurements allow the quantification of concentrations from 0 to 300 μmol/L with a detection limit of 0.6 μmol/L, and this dual-mode detection increases the reliability of the measurement. The proposed method of determination is simple, sensitive, and cost-effective, with potential applications in clinical and biochemical assays. |
| Databáze: | OpenAIRE |
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