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Preparation method for high-stability quantum dot composite

A technology of quantum dots and composites, applied in the field of nanoscience, can solve problems such as poor stability and loss of fluorescence efficiency, and achieve the effects of good stability, high cross-linking degree and less impurities

Inactive Publication Date: 2015-05-27
陈续晋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to propose a simple, environmentally friendly, transparent, adjustable luminescent color, and good stability quantum dot composite preparation method in order to solve the problems of complexity, loss of fluorescence efficiency, and poor stability in the prior art.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation method of the highly stable quantum dot composite of the present invention comprises the following steps:

[0025] (1), dissolve CdSe / CdS / ZnS quantum dots with toluene, adjust the addition amount of quantum dots, be made into the quantum dot solution that absorbance is 0.1;

[0026] (2) Mix the quantum dot solution, n-butylamine, ethyl silicate, 3-mercaptopropyltrimethoxysilane, methanol, and water according to the volume ratio of 30:10:10:3:5:2, and mix them at room temperature Stir evenly until clear to obtain a mixed solution;

[0027] (3) Put the mixed solution into the filling template-watch glass, let it stand for about 48 hours to dry naturally, and obtain a solid mixture;

[0028] (4) Heating the solid mixture to 100° C. and maintaining this temperature for 5 hours to obtain a film-like quantum dot composite. The film-like quantum dot composite can be cut arbitrarily and used to manufacture quantum dot products.

[0029] (5) The quantum dot co...

Embodiment 2

[0031] The preparation method of the highly stable quantum dot composite of the present invention comprises the following steps:

[0032] (1) Dissolve CdSe / CdS / ZnS quantum dots with toluene, adjust the amount of quantum dots added, and prepare a quantum dot solution with an absorbance of 2;

[0033] (2) Mix the quantum dot solution, n-butylamine, ethyl silicate, 3-mercaptopropyltrimethoxysilane, methanol, and water according to the volume ratio of 30:10:10:3:5:4, and mix them at room temperature Stir evenly until clear to obtain a mixed solution;

[0034] (3) Put the mixed solution into the filling template, let it stand for about 24 hours to dry naturally, and obtain a solid mixture;

[0035] (4) Heating the solid mixture to 200° C. and maintaining this temperature for 10 minutes to obtain a quantum dot composite. The quantum dot composite directly becomes the quantum dot product in the shape set by the filling template.

[0036] (5) The quantum dot composite is ground int...

Embodiment 3

[0038] The preparation method of the highly stable quantum dot composite of the present invention comprises the following steps:

[0039] (1) Dissolve CdSe / CdS / ZnS quantum dots with toluene, adjust the amount of quantum dots added, and prepare a quantum dot solution with an absorbance of 1;

[0040] (2) Mix the quantum dot solution, n-butylamine, ethyl silicate, 3-mercaptopropyltrimethoxysilane, methanol, and water according to the volume ratio of 30:10:10:3:5:2, and mix them at room temperature Stir evenly until clear to obtain a mixed solution;

[0041] (3) Put the mixed solution into the filling template, let it stand for about 24 hours to dry naturally, and obtain a solid mixture;

[0042] (4) Heating the solid mixture to 100° C. and maintaining this temperature for 1 hour to obtain a quantum dot composite. The quantum dot composite directly becomes the quantum dot product in the shape set by the filling template.

[0043] (5) The quantum dot composite is ground into po...

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PUM

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Abstract

The invention relates to a preparation method for high-stability quantum dot composite, and specifically provides a preparation method for the high-stability quantum dot composite, which belongs to the nano scientific field. The preparation method comprises the following steps: dissolving a quantum dot with an organic solvent to obtain a quantum dot solution; and uniformly mixing the quantum dot solution, n-butylamine, ethyl silicate, 3-sulfydryl propyl triethoxy silicane, methane and water in proportion. According to the preparation method disclosed by the invention, short-chain organic amine is used to replace strong alkali catalysts of long-chain organic amine, ammonia water and the like in the prior art, so that damages to the quantum dot in the preparation process are reduced, and the stability and the fluorescence efficiency of the quantum dot composite are improved.

Description

technical field [0001] The invention relates to a preparation method of a quantum dot compound, which belongs to the field of nanometer science. Background technique [0002] Quantum dots (Quantum Dots, QDs) usually refer to semiconductor nanocrystals with a radius smaller than or close to the exciton Bohr radius, and have unique fluorescent nanoeffects. Since its discovery in the 1980s, quantum dots have aroused widespread interest in scientific research and industry due to their excellent photoelectric properties. Countries have invested a lot of manpower and material resources in the research of quantum dot materials, which has become the most popular research topic in the past two decades. one of the research fields. Compared with traditional fluorescent materials, the fluorescent performance of quantum dots has the advantages of narrow half-peak width, small particles without scattering loss, and adjustable spectrum with size. . [0003] However, related products bas...

Claims

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Application Information

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IPC IPC(8): C09K11/02C09K11/88C09K11/62C09K11/66C09K11/89C09K11/54C09K11/58
Inventor 陈续晋
Owner 陈续晋
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