▎ 摘　　要

NOVELTY - A 3-methyl-6-(4-(1-(4-methylphenyl)-2,2-diphenylethenyl)phenyl)-9H-carbazole-based polymer (I), is new. USE - New 3-methyl-6-(4-(1-(4-methylphenyl)-2,2-diphenylethenyl)phenyl)-9H-carbazole-based polymer is used for preparing graphene composite material (all claimed) for chemical sensor, bio probe and solid fluorescent material. ADVANTAGE - The 3-methyl-6-(4-(1-(4-methylphenyl)-2,2-diphenylethenyl)phenyl)-9H-carbazole-based polymer has excellent aggregation-inducing luminescence effect, and provides graphene composite material which is soluble in organic solvent. DETAILED DESCRIPTION - A 3-methyl-6-(4-(1-(4-methylphenyl)-2,2-diphenylethenyl)phenyl)-9H-carbazole-based polymer of formula (I), is new. n=8-20;and R1,R2=1-6C alkyl, 1-6C alkoxy or H. INDEPENDENT CLAIMS are included for the following: (1) preparation of compound (I); (2) graphene composite material, which comprises compound (I) and graphene. The polymer (I) modifies graphene in form of non-covalent bond; and (3) preparation of graphene composite material, which involves preparing solution of polymer (I), mixing graphene oxide dispersion with the polymer (I) solution, adding hydrazine hydrate, reacting, separating, and drying.