▎ 摘 要
NOVELTY - A graphene nanoribbon comprises repeating unit (RU1) having modification(s) chosen from heteroatomic substitution, vacancy, sp3 hybridization, stone-wales defect, inverse stone-wales defect, and hexagonal sp2 hybridized carbon network ring size modification. USE - Graphene nanoribbon. Uses include but are not limited to spintronic device, carbon-based device, (opto)electronic device, transparent conductive electrode, charge and energy storage device, and integrated circuit. ADVANTAGE - The graphene nanoribbon has excellent charge carrier mobility, chemical robustness, and material strength. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) manufacture of graphene ribbon, which involves providing aromatic monomer compound(s) chosen from substituted or unsubstituted polycyclic aromatic monomer compound(s), and substituted or unsubstituted oligo phenylene aromatic monomer compound(s) on a solid substrate, polymerizing the aromatic monomer compound to form polymer(s) on the surface of the solid substrate, partially cyclodehydrogenating the obtained polymer(s); (2) pyrimidine derivative of formula (I); and (3) usage of aromatic monomer, which is used for preparing graphene nanoribbon having a defined modification structure. X=leaving group, preferably bromine or iodine.