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Graphene nanoribbon and synthesis method and application thereof

A graphene nanoribbon and synthesis method technology, applied in the field of functional materials, can solve the problems of low yield, high cost, complicated route, etc., and achieve the effects of high mobility, reliable process, and wide source of raw materials

Inactive Publication Date: 2016-03-16
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The general method of synthesizing graphene consists of physical tailoring and chemical synthesis, which has high cost, complicated route and low yield

Method used

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  • Graphene nanoribbon and synthesis method and application thereof
  • Graphene nanoribbon and synthesis method and application thereof
  • Graphene nanoribbon and synthesis method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A graphene nanoribbon, its synthetic method comprises the steps:

[0035] (1) Synthesis of 3,5-bis(4-(2-ethylhexyloxy)-benzene)-4-anol borate-1-bromobenzene:

[0036] The synthetic route is shown in the following formula:

[0037]

[0038] The specific operation is:

[0039] Add 60mL of 4-(2-ethylhexyloxy)-bromobenzene Grignard reagent (0.5M, 30mmol, tetrahydrofuran (THF) solution) into a 250mL three-necked flask, heat to 80°C and reflux, take 2,4,6 -Tribromoiodobenzene (10mmol, 4.407g) was dissolved in 30mLTHF, poured into the constant pressure funnel and added dropwise, dripped for 1h, refluxed at 80°C for 3h, cooled to room temperature, added 60mL of THF, cooled to -65°C, injected 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 10mL, remove the cooling device, and react overnight at natural temperature; after the reaction, add water, use Extract with dichloromethane, add magnesium sulfate to dry, filter with suction, spin dry, and drain; silica gel powder ...

Embodiment 2

[0054] A graphene nanoribbon, its synthetic method comprises the steps:

[0055] (1) Synthesis of 3,5-bis(4-octylbenzene)-4-anol borate-1-bromobenzene:

[0056] The synthetic route is shown in the following formula:

[0057]

[0058] The specific operation is:

[0059] Add 60mL of 4-octyl-bromobenzene Grignard reagent (0.5M, 30mmol, THF solution) into a 250mL three-necked flask, heat to reflux at 80°C, and take 2,4,6-tribromoiodobenzene (10mmol, 4.407g ) was dissolved in 30mL THF, poured dropwise into a constant pressure funnel, dripped for 1h, refluxed at 80°C for 3h, cooled to room temperature, added 60mL THF, cooled to -65°C, injected 2-isopropoxy-4,4 , 10mL of 5,5-tetramethyl-1,3,2-dioxaborolane, remove the cooling device, and react overnight at natural temperature; after the reaction, add water, extract with dichloromethane, add magnesium sulfate to dry, Suction filtration, spin-drying, and suction-drying; the silica gel powder was passed through the column, and the...

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Abstract

The invention belongs to the technical field of functional materials and discloses a graphene nanoribbon and a synthesis method and application thereof. The synthesis method of the graphene nanoribbon includes the steps that 2,4,6-tri bromine iodobenzene is made to react with Grignard reagent of an alkyl group / alkoxy aromatic hydrocarbons, boric acid pin alcohol ester is added in the later period of the reaction, and 3,5-bi(4-alkyl group / alkoxy benzene)-4-pin pinacol boric acid ester bromobenzene is obtained; the3,5-bi(4-alkyl group / alkoxy benzene)-4-pin pinacol boric acid ester bromobenzene is subjected to a Suzuki coupled reaction, a poly (paraphenylene) derivative is obtained, and the poly (paraphenylene) derivative is a precursor of the graphene nanoribbon; the precursor of the graphene nanoribbon is subjected to oxidative dehydrogenation, and the graphene nanoribbon is obtained. The graphene nanoribbon can be applied to the field of field effect transistors, photovoltaic cells, non-linear optics and sensing devices.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a graphene nanobelt and its synthesis method and application. Background technique [0002] Graphene is a new material with a single-layer sheet structure composed of carbon atoms. It is a hexagonal planar film composed of carbon atoms with sp2 hybrid orbitals, and the thickness is only one carbon atom thick. Graphene was once thought to be unable to exist stably alone, until 2004, physicists Andre Geim and Konstantin Novoselov of the University of Manchester successfully separated it from graphite in experiments by exfoliation. Graphene. After a lot of research, it is found that graphene is currently the thinnest but also the hardest two-dimensional material in the world. Single-layer graphene absorbs 2.3% of light and has a very high thermal conductivity (5300W / m·K), especially at room temperature. Electron mobility over 15000cm 2 / V·s, which is high...

Claims

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Application Information

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IPC IPC(8): C01B31/00C01B31/04
Inventor 莫越奇
Owner SOUTH CHINA UNIV OF TECH
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