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Beta-graphite diyne nano-film as well as preparation method and application thereof

A technology of graphdiyne and thin film, which is applied in the field of materials, can solve the problem that allotropic graphyne materials have not been synthesized, and achieve the effect of continuous structure and simple process and process

Inactive Publication Date: 2017-05-31
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this new type of carbon allotrope graphyne has not yet been synthesized.

Method used

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  • Beta-graphite diyne nano-film as well as preparation method and application thereof
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  • Beta-graphite diyne nano-film as well as preparation method and application thereof

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Effect test

Embodiment 1

[0042] The preparation of embodiment 1, β-graphdiyne nano film

[0043] 1) Preparation of tetrakynylethylene:

[0044] At 5°C, add 0.50 ml of tetrabutylammonium fluoride (TBAF) to a solution containing 50.0 mg (0.121 mmol (mmol)) of compound 1 in tetrahydrofuran (THF) ), and the reaction was stirred for 15 minutes under the protection of argon. Afterwards, the reaction solution was diluted with ethyl acetate (30 ml), washed three times with saturated brine, dried over anhydrous magnesium sulfate (5 g), and concentrated to dryness to obtain 9.3 mg, 62%) of tetrakyneethylene (compound 2).

[0045] 2) Preparation of β-graphdiyne nanofilm:

[0046] Such as figure 2As shown in the device, 9.3 mg of tetrakyne ethylene (compound 2) obtained in step 1) was dissolved with 20 ml of acetone and stored in a syringe pump. The syringe pump was placed in a dry ice trap to protect compound 2. Add dropwise to a three-neck flask containing 100ml of a mixture of pyridine and acetone with a ...

Embodiment 2

[0058] The preparation of embodiment 2, β-graphdiyne nano film

[0059] 1) Preparation of tetrakynylethylene:

[0060] With embodiment 1 step 1);

[0061] 2) Preparation of β-graphdiyne nanofilm:

[0062] Dissolve compound 2 with 20ml of acetone and store it in a syringe pump. The syringe pump is placed in a dry ice trap to protect compound 2. At the same time, it is slowly added dropwise to 100ml of pyridine with a volume ratio of 1:9 under the protection of argon. In the there-necked flask of the mixed solution composed of acetone, the dropwise addition time is 10 hours. Using 1.9g of copper foil as the reaction substrate, add 1.54g of tetramethylethylenediamine (TMEDA), and carry out the coupling reaction at a temperature of 45°C for 10 hours. After the reaction, a black film is formed on the copper foil. , wash the copper foil with N,N-dimethylformamide, acetone, and ethylene glycol in turn, and the black film is the β-graphdiyne film provided by the present invention, ...

Embodiment 3

[0064] The preparation of embodiment 3, β-graphdiyne nano film

[0065] 1) Preparation of tetrakynylethylene:

[0066] With embodiment 1 step 1);

[0067] 2) Preparation of β-graphdiyne nanofilm:

[0068] Dissolve compound 2 with 20ml of acetone and store it in a syringe pump. The syringe pump is placed in a dry ice trap to protect compound 2. At the same time, it is slowly added dropwise to 100ml of pyridine with a volume ratio of 1:9 under the protection of argon. In the there-necked flask of the mixed solution composed of acetone, the dropwise addition time is 16 hours. With 1.9g of copper foil as the reaction substrate, 1.54g of tetramethylethylenediamine (TMEDA) was added, and the reaction temperature was 45°C for coupling reaction for 16 hours. After the reaction, a black film was formed on the copper foil. Wash the copper foil with N,N-dimethylformamide, acetone, and ethylene glycol in sequence, and the black film is the β-graphdiyne film provided by the present inve...

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Abstract

The invention discloses a beta-graphite diyne nano-film as well as a preparation method and application thereof. The method comprises the following steps: taking copper foil or any substrate covered with copper foil on the surface as a substrate and performing a coupling reaction on tetra-alkynyl ethylene and diamines compounds in a solvent, so as to obtain the beta-graphite diyne nano-film after the reaction is finished. In the method, the optimally improved Glaser-Hay coupling reaction is adopted, so that the process is simple and convenient, and the centimetre-level beta-graphite diyne nano-film can be prepared on the surface of the copper foil substrate on a large scale; the film is stable in property and continuous and uniform in surface; the conductivity can reach 3.47*10<-6>S.m<-1>; the film is a two-dimensional carbon nanomaterial with a novel electronic structure and has potential application prospect in the fields of catalytic materials, electronic devices, catalysis, materials and the like.

Description

technical field [0001] The invention belongs to the field of materials, and relates to a β-graphdiyne nano film and a preparation method and application thereof. Background technique [0002] Two-dimensional polymer carbon materials are one of the most active research fields in materials science. Nano-carbon materials such as three-dimensional fullerene, one-dimensional carbon nanotube and two-dimensional graphene have been discovered by scientists successively, and these materials are called the key frontier research fields of chemistry and materials. Because the carbon-carbon triple bond formed by sp hybridization has the advantages of linear structure without cis-trans isomers and high conjugation, people have been eager to obtain new allotropes of carbon with sp hybridization and think that this type Carbon materials possess excellent electrical, optical and optoelectronic properties. And it will become a key material for the next generation of new electronic and optoe...

Claims

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Application Information

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IPC IPC(8): C07C13/62C07C2/88H01M4/60H01L51/30
CPCH01M4/60C07C1/321C07C2/88C07C13/62C07F7/0805H10K85/20H10K10/00C07C11/28Y02E60/10
Inventor 刘忠范谢梓骞李加强
Owner PEKING UNIV
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