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Polyvinyl carbazole/graphene composite material and synthetic method and application thereof

A polyvinylcarbazole and composite material technology, applied in the field of polyvinylcarbazole/graphene composite material and its synthesis, can solve the problems of unsatisfactory charge transfer, low carrier mobility, etc. The effect of improved sub-transmission performance, easy operation, and improved compatibility

Inactive Publication Date: 2011-11-16
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of the polymer itself, the charge transfer in the optoelectronic information device is not ideal, and its low carrier mobility has become the main obstacle restricting its development.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Prepare graphite oxide according to the method reported in the literature (Composites Science and Technology, 2009, 69, 1231);

[0030] 2) Prepare the phase transfer catalyst phenylethyl dithiobenzoate (Macromolecules1998, 31, 5559) according to the method reported in the literature, and then prepare 30 mg of graphite oxide, 0.3 mmol of 3-(trimethoxysilane) propyl acrylate, Azobisisobutyronitrile 0.2mmol, phase transfer catalyst phenethyl dithiobenzoate 0.4mmol react in N,N-dimethylformamide at 70°C for 24 hours under a nitrogen atmosphere, after suction filtration, washing and drying , to obtain graphite oxide with a surface capable of initiating reversible addition-fragmentation chain transfer polymerization groups;

[0031] 3) Place 30 mg of graphite oxide on the surface obtained in step 2) with reversible addition-fragmentation chain transfer polymerization groups on 5 g of N-vinyl carbazole, 0.2 mmol of initiator azobisisobutyronitrile, phase transfer Catalyst ...

Embodiment 2

[0034] 1) with step 1 in embodiment 1;

[0035]2) First prepare the phase transfer catalyst phenylethyl dithiobenzoate (Macromolecules 1998, 31, 5559) according to the method reported in the literature. Then 30 mg of graphite oxide, 0.4 mmol of 3-(trimethoxysilane) propyl acrylate, 0.3 mmol of azobisisobutyronitrile, and 0.6 mmol of phase transfer catalyst phenylethyl dithiobenzoate were added to the N,N-dimethoxy Reaction in methylformamide at 65°C for 36 hours under a nitrogen atmosphere, suction filtration, washing, and drying to obtain graphite oxide on the surface with groups capable of initiating reversible addition-fragmentation chain transfer polymerization;

[0036] 3) with step 3 in embodiment 1;

[0037] 4) Same as step 4 in Example 1.

Embodiment 3

[0039] 1) with step 1 in embodiment 1;

[0040] 2) with step 2 in embodiment 1;

[0041] 3) 30 mg of graphite oxide with initiator groups on the surface obtained in step 2) is placed in 8 g of N-vinylcarbazole, 0.4 mmol of initiator azobisisobutyronitrile, phase transfer catalyst dithiobenzoic acid phenylethyl In N,N-dimethylformamide solution of 0.8 mmol of ester, react at 70°C for 36 hours under nitrogen protection, centrifuge, wash, and vacuum dry to obtain polyvinylcarbazole / graphite oxide composite material;

[0042] 4) Same as step 4 in Example 1.

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Abstract

The invention relates to a polyvinyl carbazole / graphene composite material and a synthetic method and an application thereof. The synthetic method comprises the following steps: firstly oxidizing natural graphite to obtain graphite oxide; grafting an initiative and reversible addition-fragmentation chain transferred and polymeric group on the surface of the graphite oxide; and finally initiating a polymerization reaction of the N-vinyl carbazole on the surface of the graphite oxide by virtue of an initiating group to obtain the polyvinyl carbazole / graphene composite material via different reducing agents. The invention has remarkable characteristics as follows: the condition for initiating reversible addition-fragmentation chain transfer and polymerization on the surface is simple, the operation is easy, the polyvinyl carbazole can be firmly combined on the surface of the graphene by a covalent bond, controllable synthesis of macromolecular weight and molecular weight distribution canbe achieved, the compatibility of the two materials can be effectively improved to a certain degree, and the current carrier transmission performance of the composite material is improved, thus having better application prospect and better economic benefits in the photoelectric information material field.

Description

technical field [0001] The invention relates to a polyvinylcarbazole / graphene composite material and its synthesis method and application. Background technique [0002] The functionalization and deviceization of polymer matrix composites is one of the frontier research fields at home and abroad. Traditional inorganic semiconductor materials, such as silicon, germanium, and gallium arsenide, still play important roles in optoelectronic materials and devices. However, organic polymer conductive materials and luminescent materials compete with inorganic materials in the field of optoelectronics due to their advantages of easy tailoring and processing (whether at the molecular scale or aggregate scale), and have attracted more and more attention. At present, light-emitting diodes made of new organic polymer materials have been used in large-scale production of flat-panel displays, and research on photovoltaic cells and field-effect transistors has also achieved remarkable resul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00C08F8/04
Inventor 穆海梅李亮魏玉研潘国亮
Owner WUHAN INSTITUTE OF TECHNOLOGY
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