▎ 摘　　要

NOVELTY - A polycyclic aromatic compound (I) as surfactant, is new. USE - New polycyclic aromatic compound is used as surfactant for preparing graphene dispersion liquid (claimed). ADVANTAGE - The polycyclic aromatic compound provides graphene dispersion liquid with excellent dispersibility and high productivity. DETAILED DESCRIPTION - A polycyclic aromatic compound of formula (I) as surfactant, is new. M+ = Li+, Na+, K+, NH4+, N+(CH3)4 or N+(C2H5)4;and R = 1-12C alkyl. INDEPENDENT CLAIMS are included for the following: (1) manufacture of polycyclic aromatic compound (I); and (2) usage of polycyclic aromatic compound (I) in preparing graphene dispersion liquid.