有机硅烷功能化碳点的制备及应用进展

Progresses in preparation and application of organosilane functionalized carbon dots

碳点(Carbon dots,CDs)因其合成方法简单、原料来源广泛、光致发光性能优异、生物相容性好等优点,在生物成像、荧光探针等方面引起了广泛的研究兴趣。然而,CDs仍存在荧光量子产率低、聚集诱导荧光猝灭等不足,限制了其在光电器件领域中的应用。有机硅烷功能化CDs(SiCDs)不仅具有良好的液态荧光,而且能够保持其固态荧光性能,对拓展CDs的应用领域具有重要意义。综述了近年来国内外SiCDs的制备方法、性能调控与应用,总结了SiCDs在发展中存在的问题,并对SiCDs的发展方向进行了展望。

Carbon dots(CDs)have attracted extensive attention in biological imaging,fluorescent probe and so on owing to their simple synthesis methods,wide range of raw materials,excellent photoluminescence properties and good biocompatibility.However,CDs still undergo some limitations such as low quantum yield,aggregation induced fluorescence quenching and so on,which will limit their application on photoelectric devices.Organosilane functionalized CDs(SiCDs)exhibit bright emission in solution,and their fluorescence properties could be maintained in solid state,which is an effective strategy to exploit the application field of CDs.The preparation methods of SiCDs are reported,including direct synthesis method and post-processing method,and the fluorescence properties of SiCDs prepared by different methods were compared.We also reviewed the applications of SiCDs in different fields,and further summarized the problems of SiCDs in the preparations and applications,which need to be solved in future.Finally,the preparation method,performance regulation and application of SiCDs are prospected.