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A carbazole-based conjugated microporous polymer microsphere wrapped with quantum dots and its preparation method, a quantum dot film and its application

A technology of conjugated micropores and quantum dots, applied in chemical instruments and methods, instruments, luminescent materials, etc., can solve the problems of low blue light utilization efficiency, low blue light purity and low utilization efficiency of quantum dots, and reduce the actual usage. , Excellent optical performance, the effect of improving utilization efficiency

Active Publication Date: 2020-06-16
NINGBO EXCITON TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problems of low purity of blue light in the use of existing quantum dots and low utilization efficiency of blue light by quantum dots, the present invention provides a carbazole-based conjugated microporous polymer microsphere wrapped with quantum dots and its preparation method, a A kind of quantum dot film and its application
On the other hand, in order to solve the problems of low light transmittance and poor stability of existing quantum dot films, the present invention provides a carbazole-based conjugated microporous polymer microsphere wrapped with quantum dots and a preparation method thereof, a quantum dot Thin films and their applications
The carbazole-based conjugated microporous polymer microspheres wrapped with quantum dots provided by the present invention can effectively solve the problem of low utilization efficiency of blue light by quantum dots, improve the purity of blue light, and prevent quantum dots from being damaged by oxygen and water vapor in the air. Oxidation; so that the quantum dot film provided by the present invention has excellent optical properties

Method used

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  • A carbazole-based conjugated microporous polymer microsphere wrapped with quantum dots and its preparation method, a quantum dot film and its application
  • A carbazole-based conjugated microporous polymer microsphere wrapped with quantum dots and its preparation method, a quantum dot film and its application
  • A carbazole-based conjugated microporous polymer microsphere wrapped with quantum dots and its preparation method, a quantum dot film and its application

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preparation example Construction

[0053] The preparation method of the carbazole-based conjugated microporous polymer microspheres wrapped with quantum dots provided by the present invention comprises the following steps:

[0054] (1) Preparation of carbazole-based conjugated microporous polymer microspheres coated with quantum dots Add appropriate amount of ferric chloride powder to the ethanol solution dissolved with sodium citrate and cadmium selenide quantum dots, and then add Chloroform solution dissolved with carbazole-based monomer, last at room temperature for 24 hours;

[0055] (2) After filtering, washing and Soxhlet extraction, the carbazole-based conjugated microporous polymer microspheres wrapped with quantum dots are obtained.

[0056] The present invention also provides a preparation method of a quantum dot film: stirring the carbazole-based conjugated microporous polymer microspheres wrapped with the quantum dots and the acrylate UV curing glue to evenly form the coating solution of the quantum...

Embodiment 1

[0087] The invention provides a carbazole-based conjugated microporous polymer microsphere wrapped with quantum dots, and the quantum dots are distributed in the carbazole-based conjugated microporous polymer microsphere.

[0088] After replacing the nitrogen gas in the 250mL three-neck flask, quickly weigh and add 2g FeCl 3 and 30 mL of chloroform. Then add 20mL ethanol solution with 0.5g red cadmium selenide, 0.5g green cadmium selenide and 1g sodium citrate, and slowly add 50mL chloroform with 1g 1,4-bis(9-carbazole)benzene dropwise with a syringe solution, start stirring. React at room temperature for 24 hours, then add 300 mL of methanol and stir for 1 hour, filter with suction and rinse with methanol, concentrated hydrochloric acid and deionized water once, and finally extract with methanol and tetrahydrofuran for 24 hours to obtain a crude product. Finally, 1.97 g of yellow powder was obtained by vacuum drying at 60° C. for 12 hours, which were carbazole-based conjuga...

Embodiment 2

[0091] The carbazole-based conjugated microporous polymer microspheres wrapped with quantum dots as provided in Example 1.

[0092] After replacing the nitrogen gas in the 250mL three-neck flask, quickly weigh and add 2g FeCl 3 and 30 mL of chloroform. Then add 20mL ethanol solution containing 0.5g red cadmium selenide, 0.5g green cadmium selenide and 0.1g sodium citrate, and slowly add 50mL of 1g 1,4-bis(9-carbazole)benzene Chloroform solution, start stirring. React at room temperature for 24 hours, then add 300 mL of methanol and stir for 1 hour, filter with suction and rinse with methanol, concentrated hydrochloric acid and deionized water once, and finally extract with methanol and tetrahydrofuran for 24 hours to obtain a crude product. Finally, 1.67 g of yellow powder was obtained by vacuum drying at 60° C. for 12 hours, which were carbazole-based conjugated microporous polymer microspheres wrapped with quantum dots.

[0093] The performance test results of the prepare...

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Abstract

The invention relates to a quantum dot film, and in particular relates to quantum dot wrapping carbazole-based conjugated microporous polymer microspheres, a preparation method of the microspheres, aquantum dot film and an application of the quantum dot film. In order to solve the problem of low purity of blue light and low utilization efficiency of the blue light in the current use of quantum dots, and in order to solve the problems of low transmittance and poor stability of a current quantum dot film, the invention provides the quantum dot wrapping carbazole-based conjugated microporous polymer microspheres, the preparation method of the microspheres, the quantum dot film and the application of the quantum dot film. The quantum dots are distributed into a carbazole-based conjugated microporous polymer microsphere. The quantum dot wrapping carbazole-based conjugated microporous polymer microspheres provided by the invention can effectively solve the problem of low utilization efficiency of the blue light by the quantum dots, improves the purity of the blue light, and can avoid the quantum dots from being oxidized by oxygen and water vapor in air; and the quantum dot film providedby the invention has excellent optical properties.

Description

technical field [0001] The invention relates to a quantum dot film, in particular, the invention relates to a carbazole-based conjugated microporous polymer microsphere wrapped with a quantum dot and a preparation method thereof, a quantum dot film and an application thereof. Background technique [0002] Quantum dots are three-dimensional clusters with nanoscale size, so they are also called nanodots or nanocrystals. Due to the special structure of quantum dots, it has quantum size effect, macroscopic quantum tunneling effect, dielectric confinement effect and surface effect, thus producing unique physical and chemical properties and unique luminescent properties, which also makes quantum dot materials become a kind of materials related to It is an interdisciplinary field of physics, chemistry, optics, and nanomaterial technology. With the rapid development of semiconductor quantum dot synthesis, its advantages such as low cost, high stability, high quantum yield and large...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12C09K11/02C09K11/88G02F1/13357
CPCC08G61/124C08G2261/11C08G2261/18C08G2261/228C08G2261/3241C08G2261/354C08G2261/43C08G2261/522C09K11/025C09K11/883G02F1/1336G02F1/133614
Inventor 李刚徐雍捷李培源徐良霞陈冲孙书政刘伟唐海江张彦
Owner NINGBO EXCITON TECH
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