▎ 摘　　要

NOVELTY - A substituted amide derivative (I), is new. USE - New substituted amide derivative is used as graphene dispersant (claimed). ADVANTAGE - The substituted amide derivative improves dispersibility of graphene. DETAILED DESCRIPTION - A substituted amide derivative of formula (I), is new. R1,R2 = 1-4C alkyl; n = 2-5; m = 3-20; R3 = H or 1-4C alkyl;and R = H or 1-18C alkyl. INDEPENDENT CLAIMS are included for the following: (1) preparation of compound (I); and (2) usage method of compound as graphene dispersant, which involves mixing graphite, compound (I), distilled water and zirconium beads in a container, ultrasonically processing, separating zirconium beads, centrifuging and separating graphene supernatant.