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Quantum dot hybrid transparent polyimide fluorescent film and preparation method

A technology of transparent polyimide and polyimide, applied in the field of quantum dot hybrid transparent polyimide fluorescent film and preparation, to achieve low dielectric constant and loss, excellent light transmittance, and good uniformity

Inactive Publication Date: 2019-06-21
ZHEJIANG FORST NEW MATERIAL RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Due to the conjugation of the molecular structure, the traditional polyimide film has an electron transfer complex, which has an absorption effect on a certain wavelength of light, so it often shows yellow and brown, which has a negative impact on its application in the above fields and limit

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0027] Preparation of quantum dot hybrid polyamic acid precursor solution: After fully dissolving 10mmol of organic acid anhydride monomer in 30mL N,N-dimethylacetamide, quickly add 10mmol of organic amine monomer, and under the protection of nitrogen at 25 React within the range of ℃ for 6h; then quickly add carbon quantum dots to the above reaction system, stir rapidly and ultrasonically disperse, and react for 6h at 25°C under the protection of nitrogen to obtain the quantum dot hybrid polyamic acid precursor solution.

[0028] Preparation of quantum dot hybrid transparent polyimide fluorescent film, quantum dot hybrid polyamic acid precursor solution was spin-coated on copper substrate. Treat the coated substrates at 80°C, 150°C, 200°C, and 250°C for 60 minutes; then raise the temperature to 350°C for 20 minutes. After the reaction is completed, it is naturally lowered to room temperature, and the quantum dot hybrid transparent polyimide fluorescent film is peeled off fro...

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PUM

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Abstract

The invention discloses a quantum dot hybrid transparent polyimide fluorescent film and a preparation method. The quantum dot hybrid transparent polyimide fluorescent film comprises 0.0001-2.0wt% of quantum dots, 85-99wt% of polyimide and 0-5wt% of additive. The quantum dots are one or more of carbon quantum dots, silicon quantum dots, germanium quantum dots, cadmium sulfide quantum dots, cadmiumselenide quantum dots, cadmium telluride quantum dots, zinc selenide quantum dots, lead sulfide quantum dots, lead selenide quantum dots, indium phosphide quantum dots and indium arsenide quantum dots. Polyimide is prepared by polymerization and imidization reaction of alicyclics, a fluorine-containing bifunctional (multifunctional) organic acid anhydride monomer and an organic amine monomer. Thequantum dot hybrid polyimide fluorescent film has high light transmittance, high quantum efficiency, low dielectric constant and loss and can be applied to the technical field of LED (light-emitting diode) luminescence and display.

Description

technical field [0001] The invention relates to the field of polymer composite films, in particular to a quantum dot hybrid transparent polyimide fluorescent film and a preparation method thereof. Background technique [0002] Transparent polyimide films are widely used in high-tech fields such as microelectronics and optoelectronics. They can be used as optical waveguide materials, optoelectronic packaging materials, nonlinear optical materials, photorefractive materials, photosensitive materials and optoelectronic materials in the field of optical communications. It can be used as an alignment film material and a negative compensation material in the field of liquid crystal display. Due to the conjugation of the molecular structure, the traditional polyimide film has an electron transfer complex, which has an absorption effect on a certain wavelength of light, so it often shows yellow and brown, which has a negative impact on its application in the above fields and limit....

Claims

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Application Information

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IPC IPC(8): C08L79/08C08K3/04C08J5/18
Inventor 曹春李伟杰周光大林建华
Owner ZHEJIANG FORST NEW MATERIAL RES INST CO LTD
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