▎ 摘　　要

NOVELTY - Preparing graphene capable of dispersing in organic solvent, comprises: (i) dispersing oxidized graphene into thionyl chloride, adding N,N-dimethylformamide into the solution and back flowing, removing the excess thionyl chloride, adding N,N-dimethylformamide, amine with branch-shaped structure or ethanol compound and triethylamine, heating and reacting to obtain oxidized graphene with graft branch-shaped structure, (ii) dispersing the oxidized graphene with graft branch-shaped structure in step (i) into organic solvent, adding hydrazine hydrate into the solution and back flowing. USE - The method is useful for preparing graphene capable of dispersing in organic solvent. ADVANTAGE - The graphene prepared form the method: has good solvent dispersing property; is convenient to store and transport; and can be dispersed in a specific organic solvent again as required to obtain required graphene sol for large-scale application. DETAILED DESCRIPTION - Preparing graphene capable of dispersing in organic solvent, comprises: (i) dispersing oxidized graphene into thionyl chloride, adding N,N-dimethylformamide into the solution and back flowing for 5 days, removing the excess thionyl chloride, adding N,N-dimethylformamide, amine with branch-shaped structure or ethanol compound and triethylamine, heating to 80-160 degrees C and reacting for 1-6 days to obtain oxidized graphene with graft branch-shaped structure, the mass ratio of the added substances of thionyl chloride to N,N-dimethylformamide to amine or ethanol compound to triethylamine to oxidized graphene is 30-100:20-80:0.5-5:0.2-5:1, (ii) dispersing the oxidized graphene with graft branch-shaped structure in step (i) into organic solvent, adding hydrazine hydrate into the solution and back flowing for 48 hours to obtain graphene capable of dispersing in organic solvent, where the mass ratio of hydrazine hydrate to oxidized graphene with graft branch-shaped structure is 5-20:1.