▎ 摘　　要

NOVELTY - A higher-order acene derivative is a derivative in which 1st and 4th positions on the benzene ring of central benzene ring which is a benzene ring at the center of the higher-order acene in which three or more odd number of benzene rings are linearly condensed are substituted by halogen, and a diketone is crosslinked between the 1st and 4th positions on each benzene ring at symmetrical positions on both sides of central benzene ring. USE - Higher-order acene derivative is used for manufacturing graphene nanoribbons for forming semiconductor device e.g. transistor. ADVANTAGE - The higher-order acene derivative has excellent solubility with respect to organic solvent, and provides graphene nanoribbons with excellent handleability and desired width, and is manufactured by simple process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of higher-order acene derivative, which involves crosslinking dimethyl acetylene dicarboxylate to higher-order acene derivative containing quinone in the central ring by Diels-Alder reaction, removing the ester group in the crosslinked portion by decarboxylation reaction, removing oxygen of quinone by reduction reaction for adding bromine to the same position, adding oxygen to the crosslinked portion by oxidation reaction for forming diketone, and obtaining higher-order acene derivative.