Version 2 2024-01-23, 20:24Version 2 2024-01-23, 20:24
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journal contribution
posted on 2024-01-23, 20:24authored byGang Li, Hanfei Wang, Michael Loes, Anshul Saxena, Jiangliang Yin, Mamun Sarker, Shinyoung Choi, Narayana Aluru, Joseph W. Lyding, Alexander Sinitskii, Guangbin Dong
Scalable
fabrication of graphene nanoribbons with narrow band gaps
has been a nontrivial challenge. Here, we have developed a simple
approach to access narrow band gaps 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 o-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 into the GNR backbones. The N = 6/8 AGNRs have been fully characterized to support the
proposed structure and show a narrow band gap and a relatively high
electrical conductivity. In addition, their application in efficient
gas sensing has also been demonstrated.