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Preparation method of polymer carbon dots, polymer carbon dot film as well as preparation method and application of polymer carbon dot film

A polymer and polymerization reaction technology, applied in chemical instruments and methods, nano-carbon, nanotechnology for materials and surface science, etc., can solve poor optical performance, low heat extraction efficiency, and application limitations of light-emitting diodes and other issues, to achieve the effect of enhancing light extraction efficiency, improving luminous efficiency, and enhancing optical performance

Pending Publication Date: 2021-07-16
TCL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of polymer carbon dots, aiming to solve the technical problems such as low heat generation and light extraction efficiency of existing carbon dots, poor optical performance, and limited application in optical devices such as light-emitting diodes.

Method used

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  • Preparation method of polymer carbon dots, polymer carbon dot film as well as preparation method and application of polymer carbon dot film
  • Preparation method of polymer carbon dots, polymer carbon dot film as well as preparation method and application of polymer carbon dot film
  • Preparation method of polymer carbon dots, polymer carbon dot film as well as preparation method and application of polymer carbon dot film

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preparation example Construction

[0028] Append figure 2 As shown, the embodiment of the present invention provides a method of preparing a polymer carbon dot, comprising the steps of:

[0029] S10. Get the first polymer monomer and the initiator, dissolve the first polymer monomer and the initiator after the first organic solvent is formed, and the first mixed solution is formed;

[0030] S20. In protective gas atmosphere, the second polymer monomer is added to the first mixed solution to perform polymerization, and the copolymer is separated;

[0031] S30. Under the protective gas atmosphere, the copolymer is calcined, and the polymer carbon dot is separated.

[0032] It should be noted that in the step of separating the copolymer, the drying treatment can be performed after separation to facilitate the subsequent calcination process.

[0033] In some embodiments, the polarity of the first polymer monomer is lower than the polarity of the second polymer monomer. Among them, the second polymer monomer can select ...

Embodiment 1

[0089] A polymer carbon dot film comprising the following preparation steps:

[0090] 1 Under nitrogen protection, 900 ml of toluene, 48 mmol of triethyl aluminum and 40 mmol allyl alcohol were added to the flask, and the mixture was stirred to 50 ° C for 10 min, then 1 ml of toluene solution containing 1.57 mmol metal metallogenic complex was added and 2 l / h. The flow is introduced into ethylene, and the reaction is continuously reacted at 50 ° C, and finally, 20 ml of isobutanol is added to stop the polymerization, and the polymer mixture is poured into an acidic methanol, and the endoxylated polyethylene is obtained.

[0091] 2 Take 0.05 g of ammonium sulfate, 25 ml of DMF and step 1, the endoxy polyethylene obtained is mixed into the flask; then, under a nitrogen atmosphere, a mixed solution of a vinylpyrrolidone and 6 mL DMF is dropped by dropping, and at 70 The reaction was reacted at ° C for 5 h, and finally washed to dry the poly (ethylene-vinylpyrrolidone);

[0092] 3 3...

Embodiment 2

[0095] A polymer carbon dot film comprising the following preparation steps:

[0096] 1 Add 10 g of methacrylate, 0.1 g of azo diisobutyronitrile and 30 ml dimethyl sulfoxide to stir well; then, under a nitrogen atmosphere, drop diamethylene chloride Precation and 10 ml of dimethyl sulfoxide mixed solution, and react at 75 ° C for 3 h, and finally washed to dry the poly (methyl methacrylate-dimethyldienne ammonium chloride);

[0097] 2 Grinding 4 g of the above-described dry poly (methyl methacrylate-dimethyl diene ammonium chloride) to the powder, placed in a quartz boat; then under a nitrogen atmosphere, the temperature rise rate of 5 ° C / min rises to 200 At ° C, the reaction was 3 h, and the resulting product was washed with deionized water and chloroform, and the polymer carbon dot was separated.

[0098] 3 Disperse the polymer carbon dot in chloroform into a concentration of 30 mg / ml to obtain a polymer carbon dichloromethane solution; a polymer carbon dot composite a sol...

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Abstract

The invention belongs to the technical field of carbon dots, and particularly relates to a preparation method of a polymer carbon dot, which comprises the following steps: obtaining a first polymer monomer and an initiator, dissolving the first polymer monomer and the initiator in a first organic solvent to form a first mixed solution, in a protective gas atmosphere, adding a second polymer monomer into the first mixed solution for polymerization reaction, and separating to obtain a copolymer; and calcining the copolymer in a protective gas atmosphere, and separating to obtain the polymer carbon dots. The preparation method of the polymer carbon dots provided by the invention is simple to operate and suitable for large-scale industrial production and application.

Description

Technical field [0001] The present invention belongs to the field of carbon dot, and more particularly to a method of preparing a polymer carbon dot, a polymer carbon dot film and a preparation method thereof, a light emitting diode. Background technique [0002] The carbon point (CDS) refers to a fluorescently carbon particles having a size of less than 20 nanometers, which may be a hybrid carbon structure of SP2 and SP3, with a single layer or a plurality of layers of graphite structures, or a polymerization Particles. As the study increased and in-depth, people found that the carbon dot did not always be accompanied by the characteristics of graphitization, and some of the lattice pitch of the graphite did not have obvious graphite during the reaction, and even an amorphous structure. This phenomenon demonstrates the presence of amorphous structures and incomplete carbonization in the carbon dot, which reflects the state of non-carbonized components such as functional groups o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/15C09K11/65H01L33/50B82Y20/00B82Y30/00
CPCC01B32/15H01L33/502C09K11/65B82Y20/00B82Y30/00
Inventor 叶炜浩
Owner TCL CORPORATION
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