▎ 摘　　要

NOVELTY - Under nitrogen protection, graphene and reversible addition fragmentation chain transfer agent are ultrasonically dispersed in o-dichlorobenzene, heated, cooled, washed, and dried to obtain chain transfer agent anchored on the surface of graphene. The obtained product is ultrasonically dispersed in an organic solvent, an organic monomer and azobisisobutyronitrile as initiator are added under nitrogen protection, and reacted at 50-80 degrees C. The product is filtered, washed and dried to obtain a polymer-grafted graphene hybrid material. USE - Preparation of graphene hybrid material (claimed). ADVANTAGE - The method enables simple large-scale preparation of environmental response type polymer-grafted graphene hybrid material under mild conditions. The obtained functional graphene has excellent controllability with respect to thickness of polymer on the surface and long-term dispersibility in solvent. DETAILED DESCRIPTION - Under nitrogen protection, graphene and 2-(dodecylthiocarbonothioylthio)-2-methylpropionic acid 3-azido-1-propanol ester as reversible addition fragmentation chain transfer agent are ultrasonically dispersed in o-dichlorobenzene, heated to 120-160 degrees C, cooled, washed, and dried to obtain chain transfer agent anchored on the surface of graphene. The obtained product is ultrasonically dispersed in an organic solvent, an organic monomer and azobisisobutyronitrile as initiator are added under nitrogen protection, and reacted at 50-80 degrees C. The product is filtered, washed and dried to obtain a polymer-grafted graphene hybrid material. The organic solvent is tetrahydrofuran, N,N-dimethylformamide, dimethyl sulfoxide, and/or 1,4-dioxane. The organic monomer is N-isopropylacrylamide, N,N-dimethylacrylamide, 4-vinylpyridine, diethylaminoethyl methacrylate, (4-N,N-dimethylamino-ethyl-cinnamoyl)acrylate, and/or acrylic acid.