▎ 摘　　要

NOVELTY - Graphene oxide sheet derivative comprises one or multiple functional groups (I). USE - Graphene oxide sheet derivative used for preparing dispersed solution and antifreezing solution (all claimed). ADVANTAGE - The graphene oxide sheet derivative has excellent dispersibility, dispersion stability, and excellent thermal conductivity. DETAILED DESCRIPTION - Graphene oxide sheet derivative comprises one or multiple functional groups of formula (I). R=1-10C alkylene group. An INDEPENDENT CLAIM is included for a method for preparing graphene oxide sheet derivative, which involves: (A) preparing graphene oxide sheet solution comprising graphene oxide sheet having a carboxyl group bonded to its surface and a solvent; and (B) mixing an alkanolamine compound and an amide bond-inducing coupling agent in the graphene oxide sheet solution.