A kind of solid fluorescent carbon dot and its preparation method and application

Abstract

The invention belongs to the technical field of carbon dots, and particularly relates to a solid fluorescent carbon dot, and a preparation method and an application thereof. A natural biomass resource-rosin resin acid with a tricyclic phenanthrene skeleton structure is used as a raw material, and the prepared solid fluorescent carbon dot is difficult to be dissolved in water, has adjustable fluorescence and emits yellow (or yellow green) fluorescence. The preparation method which adopts a one-step hydrothermal synthesis process has the advantages of no complex synthesis, separation or purification, simplicity and high yield; and the prepared solid fluorescent carbon dots can be used for successfully preparing white light emitting diodes (WLED) emitting warm white light, pure white light and cold white light, and can also be applied to the fields of waterproof ink printing and cell imaging.

Description

technical field [0001] The invention relates to the technical field of carbon dots, in particular to a solid fluorescent carbon dot and its preparation method and application. Background technique [0002] Phosphor-based white light-emitting diodes (WLEDs) have been widely used due to their low energy consumption, long lifetime, and environmental protection. In recent years, solid fluorescent carbon dots (SF-CDs) have attracted extensive attention in the field of white light-emitting diodes due to their advantages of low cost, tunable fluorescence, and environmental friendliness. At present, most of the solid fluorescent carbon dots prepared by the existing methods emit three primary colors (blue, green, red) fluorescence, and there are relatively few studies on directly obtaining yellow or yellow-green solid fluorescence emission, especially the solid fluorescence with water resistance. There are also relatively few carbon dots. And the preparation and purification method...

AI Technical Summary

Problems solved by technology

At present, most of the solid fluorescent carbon dots prepared by the existing methods emit three primary colors (blue, green, red) fluorescence, and there are relatively few studies on directly obtaining yellow or yellow-green solid fluorescence emission, especially the solid fluorescence with water resistance. Carbon dots are relatively less

And the preparation and purification methods are relatively complicated (such as multiple synthesis, secondary surface structure modification, multiple centrifugal dialysis, etc.)

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