Synthetic method of polyvinylcarbazole/graphene composite material with storage effect
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A polyvinylcarbazole and composite material technology, which is applied in the synthesis field of polyvinylcarbazole/graphene composite material, can solve the problems of low carrier mobility, unsatisfactory charge transfer, restricting development, etc. Effect of improved carrier transport performance, easy operation, low turn-on voltage
Active Publication Date: 2010-09-29
武汉工大科技园发展有限公司
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Problems solved by technology
However, due to the characteristics of the polymer itself, the charge transfer is not ide
Method used
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Embodiment 1
[0018] 1) Prepare graphite oxide according to the method reported in the literature (Composites Science and Technology, 2009, 69, 1231);
[0019] 2) React 50 mg of graphite oxide with 2 mmol of phenyl isocyanate in N,N-dimethylformamide at 80° C. for 24 hours, filter with suction, wash and dry to obtain functionalized graphite oxide;
[0020] 3) Sonicate 50 mg of the functionalized graphite oxide obtained in step 2) and 2 mg of polyvinyl carbazole in N,N-dimethylformamide for 1 hour, add 3 mg of hydrazine hydrate to it, and react at 80° C. for 24 hours, Pour into methanol to precipitate, filter, and vacuum dry to obtain polyvinylcarbazole / graphene composite material.
Embodiment 2
[0022] 1) with step 1 in embodiment 1;
[0023] 2) with step 2 in embodiment 1;
[0024] 3) Sonicate 50 mg of the functionalized graphite oxide obtained in step 2) and 8 mg of polyvinyl carbazole in chloroform for 2 hours, add 2 mg of hydrazine to it, react at 70 ° C for 48 hours, pour into methanol to precipitate, filter, vacuum Dry to obtain polyvinylcarbazole / graphene composite material.
Embodiment 3
[0026] 1) with step 1 in embodiment 1;
[0027] 2) React 50 mg of graphite oxide and 5 mmol of phenyl isocyanate in N,N-dimethylformamide at 70° C. for 36 hours, suction filter, wash, and dry to obtain functionalized graphite oxide;
[0028] 3) Same as step 3 in Example 1.
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Abstract
The invention relates to a synthetic method of a polyvinylcarbazole/graphene composite material with the storage effect, which comprises the following steps: firstly preparing functionalized graphite oxide, further blending and dispersing polyvinylcarbazole and the functionalized graphite oxide in an organic solvent, finally adopting different reducing agents for reduction, and obtaining the polyvinylcarbazole/graphene composite material. The polyvinylcarbazole/graphene composite material with the storage effect has the following significant characteristics: 1) the preparation method can uniformly disperse the graphite oxide and the polyvinylcarbazole in the organic solvent through the functionalization of the graphite oxide, the experimental conditions are simple, and the operation is easy; 2) grapheme with excellent performances is introduced in the conductive polymer polyvinylcarbazole as an electron acceptor, thereby improving the transmission performance of a current carrier of the composite material and having better application prospects and economic benefits in the field of optoelectronic information materials.
Description
technical field [0001] The invention relates to a synthesis method of polyvinyl carbazole / graphene composite material with memory effect. Background technique [0002] For the application of polymer matrix composites, in addition to being a traditional mechanical and thermal reinforcement material, the functionalization and deviceization of polymer matrix composites are also international frontier research fields. High-tech development is inseparable from high-speed, high-density optoelectronic materials and devices. Traditional inorganic semiconductor materials, such as silicon, germanium, and gallium arsenide, still play an important role here. 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...
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