Adjusting of multicolor fluorescence carbon dots and their application

Abstract

Carbon dots(CDs) have attracted extensive attention of researchers because of their excellent fluorescence performance,low toxicity,extensive raw materials and good biocompatibility.However,the emission wavelengths of most CDs are in short-wavelength region of blue and green light,limiting their widespread application.The synthesis of multicolor CDs can guide the realization of long wavelength CDs and broaden the application of CDs.Therefore, the multicolor emitting mechanism of CDs from sizes,inner structures and surface states of CDs was reviewed,the adjusting measures of achieving multicolor CDs were presented,including raw materials,reaction conditions,surface modification,and separation and purification.Furthermore,the application of multicolor CDs in light emitting diode and bioimaging was also summarized.

Keywords

• carbon dot
• multicolor
• synthesis
• application