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Abstract
Scalable fabrication of graphene nanoribbons with narrow band gaps has been a nontrivial challenge. Here, we have developed a unique approach to access narrow band gaps by using hybrid edge structures. Bottom-up liquid-phase synthesis of bent N=6/8 armchair graphene nanoribbons (AGNRs) has been achieved in high efficiency through copolymerization between an ortho-terphenyl monomer and a naphthalene-based monomer, followed by Scholl oxidation. An unexpected 1,2-aryl migration has been discovered, which is responsible for introducing kinked structures to the GNR backbones. The N=6/8 AGNRs have been fully characterized to support the proposed structure, which also show the narrow band gap and relatively high conductivity. In addition, their application in efficient gas sensing has also been demonstrated.
Supplementary materials
Title
Hybrid Edge Results in Narrowed Band Gap: Bottom-up Liquid-phase Synthesis of Bent N=6/8 Armchair Graphene Nanoribbons
Description
Supplemental information including supporting figures and tables, general information, synthesis of materials, x-ray data, nmr spectra, computational methods, and references.
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