▎ 摘　　要

NOVELTY - Phenylacetylene functionalized graphene/copper composite thermal conductive material is claimed. The graphene and copper are respectively connected to organic molecules with p-orbital conjugated phenylacetylene group, graphene/phenylacetylene delocalized conjugated pi system is established between the p orbital of the conjugated phenylacetylene group and the p orbital perpendicular to the graphene plane, the electronic thermal conduction path of the graphene/copper composite material is constructed through the combination of copper and alkynyl groups, thus the pi electrons in the graphene can be freely conducted to the copper matrix. USE - Used as phenylacetylene functionalized graphene/copper composite thermal conductive material. ADVANTAGE - The preparation method is simple; provides new development direction for the development of efficient heat dissipation graphene metal-based composite thermal conduction materials. The graphene/copper composite thermal conductive material: has a phonon heat conduction path, an efficient heat dissipation electronic heat conduction path with high thermal conductivity. DETAILED DESCRIPTION - Phenylacetylene functionalized graphene/copper composite thermal conductive material (FGr/Cu) is claimed. The graphene and copper are respectively connected to organic molecules with p-orbital conjugated phenylacetylene group, graphene/phenylacetylene delocalized conjugated pi system is established between the p orbital of the conjugated phenylacetylene group and the p orbital perpendicular to the graphene plane, the electronic thermal conduction path of the graphene/copper composite material is constructed through the combination of copper and alkynyl groups, thus the pi electrons in the graphene can be freely conducted to the copper matrix. An INDEPENDENT CLAIM is also included for preparing phenylacetylene functionalized graphene/copper composite thermal conductive material, comprising (i) modifying the graphene by diazotization to obtain phenylacetylene functionalized grapheme, specifically dispersing graphene into round-bottomed flask containing magnets and absolute ethanol and first stirring it magnetically, then performing ultrasonic treatment, mixing the suspension obtained with the ethanol solution of 4-ethynylaniline and exhausting with molecular nitrogen, then slowly adding isoamyl nitrite dropwise into the ethanol mixed solution, then carrying out strong magnetic stirring and heating to reflux for 16 hours, cooling the suspension to room temperature, filtering the suspension with a polytetrafluoroethylene membrane having pore size of 0.2 mu m and washing with ethanol until the filtrate was colorless, collecting the phenylacetylene functionalized graphene and (ii) adding the phenylacetylene functionalized graphene prepared in step (i) is added to the acidic copper(II) sulfate solution using the pulse electrophoresis co-deposition method and maintaining magnetic stirrer during electrodeposition process to obtain final product.