▎ 摘　　要

NOVELTY - A reduced graphene oxide comprises graft copolymer(s) (1) comprising monomer(s) and macromonomer(s). USE - Reduced graphene oxide is used as implant material for gene delivery, drug delivery and release, and as dual drug that is both therapeutic and genetic carrier, or by loading an anti-cancer drug, or for drug delivery to brain (all claimed). ADVANTAGE - The biocompatible reduced graphene oxide has excellent durability and rigidity, and no toxic effects. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for graphene oxide coating method. DESCRIPTION OF DRAWING(S) - The drawing shows a molecular view of the graft copolymer. Graft copolymer (1) Polyethylene glycol (11) Methyl methacrylate (12) Pyrenemethyl methacrylate (13)