Highly Luminescent Organosilane-Functionalized Carbon Dots

Authors

  • Fu Wang,

    1. Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Zheng Xie,

    1. Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Hao Zhang,

    1. Coordination Laboratory of National Center for Nanoscience and Technology, Institute of Pharmacology and Toxicology, Beijing Academy of Medical Science, Beijing 100850, P. R. China
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  • Chun-yan Liu,

    Corresponding author
    1. Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
    • Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Ying-ge Zhang

    Corresponding author
    1. Coordination Laboratory of National Center for Nanoscience and Technology, Institute of Pharmacology and Toxicology, Beijing Academy of Medical Science, Beijing 100850, P. R. China
    • Coordination Laboratory of National Center for Nanoscience and Technology, Institute of Pharmacology and Toxicology, Beijing Academy of Medical Science, Beijing 100850, P. R. China.
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Abstract

The first use of an organosilane as a coordinating solvent to synthesize highly luminescent (quantum yield = 47%) amorphous carbon dots (CDs) in one minute is reported. The CDs, which benefit from surface methoxysilyl groups, have a diameter of ~0.9 nm and can easily be fabricated into pure CD fluorescent films or monoliths simply by heating them at 80 ºC for 24 h. Moreover, the non-water-stable CDs can be further transformed into water-soluble CDs/silica particles, which are biocompatible with and nontoxic to the selected cell lines in our preliminary evaluation. The proposed novel synthetic route is believed to provide an alternative synthesis route and should inspire more research into the origin and applications of CDs, as well as delivering CD-based materials.

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