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Quantum dot doped gel, and preparation and application thereof

A technology of quantum dots and gels, which is applied in the field of preparation and application of nanocomposite materials, can solve problems such as lack of repairability and poor mechanical properties, and achieve the effect of limited viewing angle and simple operation

Inactive Publication Date: 2014-02-05
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A few composite materials without adding cross-linking agent have poor mechanical properties and do not have repairable properties
However, quantum dot-based gels with high luminous efficiency and repairable properties have rarely been reported in the field of 3D holographic display.

Method used

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  • Quantum dot doped gel, and preparation and application thereof
  • Quantum dot doped gel, and preparation and application thereof
  • Quantum dot doped gel, and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Add 10ml of 5mg / ml CdTe quantum dot aqueous solution, 0.5g of gelatin particles with a molecular weight of 50,000, and 39.45ml of deionized water into a three-necked flask, and then pass N at 30°C 2 Remove oxygen for 30 minutes while allowing the gelatin to fully swell, then heat to 50°C to fully dissolve the gelatin to form a homogeneous mixed solution; immediately pour the mixed solution into a triangular glass container and cool to 20°C after stopping heating to obtain a quantum dot-doped Gel, wherein the mass fraction of quantum dots is 0.1%, and the mass fraction of gelatin is 1%.

[0068] A digital photograph of the gel is shown in figure 1 (a), figure 1 (a) is a photograph of the gel at 20° C. under the irradiation of a 365 nm ultraviolet lamp.

[0069] Then according to the above steps, by regulating the mass fraction of quantum dots and gelatin and the luminous color of quantum dots (the mass fraction of quantum dots is 0.1% to 10%, the mass fraction of gelat...

Embodiment 2

[0071] Add 10ml of 50mg / ml CdTe / CdS quantum dot aqueous solution, 2.5g of agar particles, and 37.45ml of deionized water into a three-necked flask, and then pass N at 30°C 2 Remove oxygen for 30 minutes while allowing the agar to fully swell, then heat to 100°C to fully dissolve the agar to form a homogeneous mixed solution; immediately pour the mixed solution into a beaker and cool to 20°C after stopping heating to obtain a quantum dot-doped gel , where the mass fraction of quantum dots is 1%, and the mass fraction of agar is 5%.

[0072] The digital photograph of the gel is as figure 1 (b), figure 1 (b) is a photograph of the gel at 20° C. and irradiated by a 365 nm ultraviolet lamp.

[0073] Then according to the above steps, by regulating the mass fraction of quantum dots and agar and the luminous color of quantum dots (the mass fraction of quantum dots is 0.1% to 10%, the mass fraction of agar is 1% to 25%, the luminous color of quantum dots is green to red ) to prepar...

Embodiment 3

[0075] Add 10ml of 100mg / ml CdZnTe quantum dot aqueous solution, 7.5g of chitosan particles with a molecular weight of 200,000, and 32.4ml of deionized water into a three-necked flask, and then at 30°C, pass N 2 Remove oxygen for 30 minutes while allowing chitosan to fully swell, then heat to 95°C to fully dissolve chitosan to form a homogeneous mixed solution; immediately pour the mixed solution into a square glass container and cool to 20°C after stopping heating to obtain a quantum Dot-doped gel, wherein the mass fraction of quantum dots is 2%, and the mass fraction of chitosan is 15%.

[0076] The digital photograph of the gel is as figure 1 (c), figure 1 (c) is a photograph of the gel at 20° C. under the irradiation of a 365 nm ultraviolet lamp.

[0077] Then according to the above steps, by regulating the mass fraction of quantum dots and chitosan and the luminous color of quantum dots (the mass fraction of quantum dots is 0.1% to 10%, the mass fraction of chitosan is ...

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Abstract

The invention relates to a quantum dot doped gel and preparation and application thereof, belonging to the technical field of preparation and application of nanocomposites. The gel is a polymer in which one or more selected from the group consisting to CdTe, CdTe / CdS, CdZnTe, CdZnTe / CdS, ZnSe, ZnSe / ZnS, CdSe, CdSe / CdS, CdSe / ZnS, ZnCdSe, CdSe / CdS / ZnS and CdTe / CdS / ZnS are dispersed, and the polymer is one or more selected from the group consisting of agar, gelatin, chitosan, polyvinyl alcohol, polyethylene glycol, carragheenan, hyaluronic acid and polyacrylamide. The gel is prepared by adding 1 to 25 wt% of the polymer into 0.1 to 10 wt% of a quantum dot aqueous solution, carrying out stirring under the protection of gas at a temperature of 0 to 40 DEG C for swelling of the polymer, then dissolving the polymer at a temperature of 50 to 100 DEG C and allowing the gel to be formed at a temperature of 0 to 40 DEG C. The gel can be used as a display material in three-dimensional holographic display.

Description

technical field [0001] The invention relates to a gel doped with quantum dots, its preparation and application, and belongs to the technical field of nanocomposite material preparation and application. Background technique [0002] In recent years, 3D display has attracted a lot of attention, because it has the advantages of high stereoscopic effect and high resolution compared with 2D display technology, and can meet people's high requirements for visual experience. Most of the existing 3D technologies are pseudo-3D technologies, which simulate the three-dimensionality of real objects by overlapping two parallel 2D images, and long-term viewing will bring fatigue and discomfort. Holographic display technology is a technology with great application potential in 3D display. It can display true 3D images with high resolution, and you don’t need to wear glasses and other auxiliary tools to watch 3D images. In addition, holographic display technology can synthesize holograms of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L89/00C08L5/12C08L5/08C08L29/04C08K3/30C09K11/88C09K11/02G03H1/12
Inventor 钟海政朱敏刘娟王涌天
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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