▎ 摘　　要

NOVELTY - Graphene oxide derivative (I) is new. USE - Graphene oxide derivative used in internal implant material, tissue engineering, drug delivery system and biosensor. ADVANTAGE - The graphene oxide derivative is stable, easy to process and compatible with simulated external cytomembrane structure. DETAILED DESCRIPTION - Graphene oxide derivative of formula (I) is new. An INDEPENDENT CLAIM is included for a method for preparing graphene oxide derivative of formula (I). X1 and X2=O or N; R1a and R2=H or CH3; R3=bauxite-choline group, lysine type zwitterionic or amphoteric ion; and M divide by (m+p+q)=0.3-0.9.