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Micrometer crystal material of carbon nano dot doped sodium chloride, and preparation method and applications thereof

A technology of carbon nano-dots and sodium chloride, applied in chemical instruments and methods, luminescent materials, electrical components, etc., can solve problems such as limitations, poor thermal stability of starch, poor optical properties and stability of micro-crystals, etc.

Inactive Publication Date: 2017-02-15
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Claims
  • Application Information

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Problems solved by technology

At present, the carbon nanodot fluorescent composite materials are mainly blue fluorescent materials and fluorescent materials based on polymer dispersion matrix, such as siloxane, methyl methacrylate and starch fibers, etc., but the thermal stability of starch is poor, and the obtained micron crystals The optical performance and stability are poor, and there are certain limitations in practical applications

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  • Micrometer crystal material of carbon nano dot doped sodium chloride, and preparation method and applications thereof
  • Micrometer crystal material of carbon nano dot doped sodium chloride, and preparation method and applications thereof
  • Micrometer crystal material of carbon nano dot doped sodium chloride, and preparation method and applications thereof

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preparation example Construction

[0038] The preparation method of the green light-emitting carbon nano-dots described in the present invention mainly comprises the following steps:

[0039] Step S11: Mix and dissolve preset amounts of citric acid and urea in deionized water to obtain a colorless and transparent solution.

[0040] 3 g of citric acid and 6 g of urea were mixed and dissolved in 20 ml of deionized water to obtain a colorless and transparent solution.

[0041] Step S12: heating the colorless and transparent solution for a preset time to obtain a tan viscous liquid.

[0042] The colorless transparent solution was heated in microwave for about 5 minutes to obtain a tan viscous liquid.

[0043] Step S13: drying the viscous liquid, dissolving it in deionized water, and performing centrifugation to remove insoluble carbon nano-dot particles to obtain carbon nano-dots emitting green light.

[0044] The viscous liquid obtained was dried, dissolved in deionized water, and centrifuged three times at a sp...

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Abstract

The invention discloses a micrometer crystal material of carbon nano dot doped sodium chloride. The micrometer crystal is prepared by the following steps: taking sodium chloride crystals as the dispersoid, and embedding carbon nano dots into the sodium chloride crystals to evenly disperse carbon nano dots into a solid so as to obtain carbon nano dot doped sodium chloride micro-crystal giving off green light. Sodium chloride crystals have good thermal stability and are stable in an organic solvent, so carbon nano dots can be evenly dispersed in the sodium chloride crystals; the phenomenon of fluorescence quenching caused by aggregation of carbon nano dots in a solid state is avoided, and the obtained carbon nano dot doped sodium chloride micro-crystal giving off green light has a fluorescence quantum efficiency of 25%. The invention also discloses a preparation method and application of the micrometer crystal material of carbon nano dot doped sodium chloride.

Description

technical field [0001] The invention relates to the technical field of carbon nanomaterials, in particular to a microcrystalline material with carbon nanodots doped with sodium chloride, a preparation method and an application thereof. Background technique [0002] Carbon nanodots (Carbon dots, CDs) are a new type of luminescent carbon nanomaterials. Due to their good stability, water solubility, photobleaching resistance and excellent biocompatibility, they are regarded as the best choice for organic dyes and semiconductor quantum dots. potential substitutes. With the above advantages, carbon nanodots have broad application prospects in the fields of biological imaging, optoelectronic devices, biomarkers, and sensing. At present, carbon nanodots have achieved high-efficiency luminescence in the blue and green light bands, and the fluorescence quantum efficiency of its aqueous solution has reached more than 60%. [0003] Recently, carbon nanodots, as a fluorescent material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65H01L33/50
CPCC09K11/65H01L33/502
Inventor 曲松楠翟阅臣周鼎
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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