Method for preparing cerium sulfide doped carbon quantum dot nano fluorescent material

A technology of carbon quantum dots and nano-fluorescence, which is applied in the field of preparation of nano-luminescent materials, can solve the problems of inability to accurately control the lateral size and surface chemistry, the low fluorescence quantum yield of the synthesis method, and the unclear luminescence mechanism, etc., and achieve the improvement of fluorescence performance , Uniform size, good biocompatibility
CN110437835AActive Publication Date: 2019-11-12UNIV OF JINAN
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF JINAN
Publication Date
2019-11-12

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Abstract

The invention discloses a method for preparing a cerium sulfide doped carbon quantum dot nano fluorescent material. The method is characterized in that: the method includes preparing an A solution from deionized water, itaconic acid and cerium trichloride; preparing a B solution from deionized water and thioacetamide; adding the A solution into a reactor, and stirring the A solution; adding the Bsolution dropwise into the A solution, with the volume ratio of the A solution to the B solution being 5:1; stirring and reacting the mixture for 30 min after the dropwise addition is finished; transferring the mixture to a reaction kettle, covering the kettle with a sealing cover, and putting the kettle into a thermostat; reacting the mixture at a constant temperature of 180 + / -2 DEG C for 20-24h to obtain a red suspension liquid; performing solid liquid separation to obtain liquid that is a crude product of the cerium sulfide doped carbon quantum dot nano fluorescent material; and purifyingthe material through a dialysis manner. The method is green and simple to operate, and the material can have high fluorescence stability, a small and uniform size, good biocompatibility and other characteristics without the need of secondary modification.
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Description

technical field

[0001] The invention belongs to the technical field of nano-luminescent material preparation, and in particular relates to a preparation method and fluorescent performance of a cerium sulfide-doped carbon quantum dot nano-luminescent material. Background technique

[0002] As an emerging nanomaterial, carbon quantum dots (C-Dots) have the advantages of good biocompatibility, non-toxicity, small particle size, adjustable emission spectrum, high fluorescence stability and photobleaching resistance, and the raw materials are cheap. And the characteristics of rich sources, easy preparation and modification make its preparation and application become one of the hot research fields of analytical chemistry in recent years. However, the current research on fluorescent C-Dots nanomaterials is still in its infancy, and there are still some urgent scientific research problems to be solved. For example, the yield and fluorescence quantum yield (QY) of existing synthesis ...

Claims

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