▎ 摘　　要

NOVELTY - Combination of a substrate comprising silicon, silicon carbide or a metal, and a graphene precursor having an aromatic structure comprising benzene, naphthalene, pyrene, anthracene, chrysene, coronene or phenanthrene or a cyclic or acyclic structures which can be converted to aromatic structures, that forms the basis of graphene structure and at least two different types of functional groups comprising carbon-carbon double bonds, carbon-carbon triple bonds, dienes and/or ketones that can react with each other to grow graphene structure by forming additional carbocyclic aromatic structures. USE - The combination is useful: in the production of nanotubes and other similar structures; and for production of large integrated electronic devices. ADVANTAGE - The combination: comprises precursor, which is designed so as to reduce or even eliminate the tendency of aromatic structures to stack upon each other ( pi - pi stacking interactions), which ultimately will lead to predominantly single layer graphene sheets, and the precursor is readily dissolved in solvents (all claimed); and provides graphene sheet, which remains adherent to the substrate. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) graphene precursor, which is 4,4'-(1,4-phenylene)bis(3-(3-ethynylphenyl)-2,5-diphenylcyclopenta-2,4-dienone) (I); and (2) graphene precursor of formula (II). Z = COOH, SO3H, SH, OH, NH2, NHR, NR2, NR3+, SiX3 or Si(OR)3; R = alkyl or aryl; and X = halo.