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- W2736192145 abstract "Fluorescent carbon nanoparticles (FCNPs) are promising fluorescence probes with potential applications in sensors, bio-imaging, photo-catalysis, ion detection, fluorescent inks and other areas, mainly due to their high stability, low toxicity and cost-effectiveness. However, the relatively low quantum yield (QY) and complex synthesis routes usually hinder their applications. Here, highly efficient FCNPs doped with N, P and Ca ions have been prepared via a simple hydrothermal process using green natural raw materials of sesame as precursors. The products emit strong blue fluorescence with QY as high as 48.5% under 360 nm excitation due to the improved electronic characteristics and abundant defect sites induced by natural N, P and Ca ions co-doping. The bright fluorescence, high photostability, ultralow toxicity and good biocompatibility endow as-prepared FCNPs with great potential applicatios in bio-imaging and patterning. Most importantly, as-prepared FCNPs exhibit an extraordinarily high sensitivity and selectivity to Fe3+ ions compared to other metal ions in aqueous solution. The fluorescence intensity is inversely proportional to the concentration of Fe3+ ions, and the calibration curve displays linear regions over the range of 0–90 nM with a low limit of detection (LOD) of 1.5 nM. Meanwhile, it shows a “turn-on” fluorescence response to F− with good linearity at 10–60 nM and a LOD of 2.4 nM. These results indicate that FCNPs, as a fluorescent sensing platform, could meet the selective requirements for biomedical analysis and environmental monitoring." @default.
- W2736192145 created "2017-07-21" @default.
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- W2736192145 date "2017-12-01" @default.
- W2736192145 modified "2023-10-02" @default.
- W2736192145 title "Sesame-derived ions co-doped fluorescent carbon nanoparticles for bio-imaging, sensing and patterning applications" @default.
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- W2736192145 doi "https://doi.org/10.1016/j.snb.2017.07.043" @default.
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