荧光硫量子点制备及应用研究进展

Research progress on preparation and application of fluorescent sulfur quantum dots

摘要:

硫量子点具有发光强度高、毒性低和光化学性能稳定等优势，广泛应用于细胞成像、光电转换和化学催化等领域。鉴于此，本文系统综述了硫量子点的合成方法，光学性能和应用背景。硫量子点的合成方法可分为“自下而上法”和“自上而下法”，对比发现“自上而下法”合成的硫量子点具有更高的荧光量子产率。分析了硫量子点的光学性质，表明其具有紫外吸收特性、荧光特性、光致发光、电化学发光以及光学稳定性。最后，系统介绍了硫量子点在荧光探针、生物成像以及发光器件等领域的重要应用。基于以上分析，深刻剖析了当下硫量子点在前沿应用中亟待解决的问题，展望了未来硫量子点在生物医学、光电催化等新行业、新领域的发展方向。

Abstract:

Sulfur quantum dots are outstanding because of high luminous intensity, low toxicity and stable photochemical properties, and they are widely used in cell imaging, photoelectric conversion and chemical catalysis. Synthesis methods, optical properties and application background of sulfur quantum dots are systematically reviewed in this article. The synthesis method of sulfur quantum dots can be divided into "bottom-up method" and "top-down method", and the latter could afford sulfur quantum dots with higher fluorescence quantum yield than the former. It is reviewed that the optical properties of sulfur quantum dots. The characterization of optical properties shows that sulfur quantum dots possess ultraviolet absorption characteristics, fluorescence characteristics, Photoluminescence, electrochemiluminescence, and optical stability. Finally, it is introduced about the important application of sulfur quantum dots in the fields of fluorescent probes, biological imaging and light-emitting devices. Based on the above analysis, the problems are deeply discussed and need to be solved urgently in the cutting-edge application of sulfur quantum dots. Moreover, the future development direction of sulfur quantum dots is forecasted in new industries and fields such as biomedicine and photoelectric.