▎ 摘　　要

NOVELTY - A pyrene-containing derivative (I) is new. USE - Pyrene-containing derivative used as dispersant for preparation of graphene (claimed). DETAILED DESCRIPTION - A pyrene-containing derivative of formula (I) is new. R1=groups of formula (a), (b), (c) or (d); a=0-4; b=0-1; and c, d=0-3. INDEPENDENT CLAIMS are included for: (1) preparation of compound (I); and (2) preparation of graphene comprising reacting natural graphite with compound (I) in solvent comprising chloroform, tetrahydrofuran and acetone, or in low-boiling point organic solvent comprising ethanol, or water.