State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Chemistry and Chemical Engineering, Tianjin Polytechnic University, Tianjin, 300387, People's Republic of China.
State Key Laboratory of Chemo/Biosensing and Chemometrics, Provincial Hunan Key Laboratory for Cost-effective Utilization of Fossil Fuel Aimed at Reducing Carbon dioxide Emissions, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, Hunan, China.
Mikrochim Acta. 2019 Jul 29;186(8):583. doi: 10.1007/s00604-019-3688-y.
Carbon dots (CDs) display tunable photoluminescence and excitation-wavelength dependent emission. The color of fluorescence is affected by electronic bandgap transitions of conjugated π-domains, surface defect states, local fluorophores and element doping. In this review (with 145 refs.), the studies performed in the past 5 years on the relationship between the fluorescence mechanism and modes for modulating the emission color of CDs are summarized. The applications of such CDs in sensors and assays are then outlined. A concluding section then gives an outlook and describes current challenges in the design of CDs with different emission colors. Graphical abstract Schematic representation of the relationship between the color-emitting (blue, green, yellow, red and multicolor) modulation of carbon dots and fluorescence mechanism including bandgap transitions of conjugated π-domains and surface defect states.
碳点 (CDs) 表现出可调谐的光致发光和激发波长相关的发射。荧光的颜色受共轭π-域的电子能带隙跃迁、表面缺陷态、局部荧光团和元素掺杂的影响。在这篇综述（引用了 145 篇参考文献）中，总结了过去 5 年中关于荧光机制与调制 CDs 发射颜色模式之间关系的研究。然后概述了此类 CDs 在传感器和分析中的应用。最后一节给出了展望，并描述了设计具有不同发射颜色的 CDs 所面临的当前挑战。
