Preparation and application of solvent‐modulated self‐doped N–S multicolour fluorescence carbon quantum dots
作者： Jun Xu , Jinkai Li , Congling Wang , Weilin Zhao
DOI: 10.1002/BIO.3698
关键词:
摘要: In this paper, two types of carbon quantum dot (CQDs) were prepared using biocompatible l-methionine as the source and urea nitrogen a one-step hydrothermal treatment. By changing reaction solvents (deionized (DI) water dimethylformamide (DMF)), maximum emission resulting CQDs shifted from blue to red light. Specifically, wavelength moved 433 nm 625 nm following embedding new functional group (-CONH-) on surface CQDs. Photoluminescence yields with reached 64% 61%, respectively. The R-CQDs used detect metal ions linear relationship was demonstrated between ln(F/F0 ) Fe3+ concentration in range 0-0.5 mmol/L detection limit 0.067 μM. Therefore these have great potential fluorescent probes for detection. We expect that excellent water-soluble, optical properties developed work mean they will be widely biological cells.
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