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Synthesis of Nonplanar Graphene Nanoribbon with Fjord Edges.

ABSTRACT: As a new family of semiconductors, graphene nanoribbons (GNRs), nanometer-wide strips of graphene, have appeared as promising candidates for next-generation nanoelectronics. Out-of-plane deformation of π-frames in GNRs brings further opportunities for optical and electronic property tuning. Here we demonstrate a novel fjord-edged GNR (FGNR) with a nonplanar geometry obtained by regioselective cyclodehydrogenation. Triphenanthro-fused teropyrene 1 and pentaphenanthro-fused quateropyrene 2 were synthesized as model compounds, and single-crystal X-ray analysis revealed their helically twisted conformations arising from the [5]helicene substructures. The structures and photophysical properties of FGNR were investigated by mass spectrometry and UV-vis, FT-IR, terahertz, and Raman spectroscopic analyses combined with theoretical calculations.

SUBMITTER: Yao X

PROVIDER: S-EPMC8154539 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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Synthesis of Nonplanar Graphene Nanoribbon with Fjord Edges.

Yao Xuelin X Zheng Wenhao W Osella Silvio S Qiu Zijie Z Fu Shuai S Schollmeyer Dieter D Müller Beate B Beljonne David D Bonn Mischa M Wang Hai I HI Müllen Klaus K Narita Akimitsu A

Journal of the American Chemical Society 20210407 15

As a new family of semiconductors, graphene nanoribbons (GNRs), nanometer-wide strips of graphene, have appeared as promising candidates for next-generation nanoelectronics. Out-of-plane deformation of π-frames in GNRs brings further opportunities for optical and electronic property tuning. Here we demonstrate a novel fjord-edged GNR (<b>FGNR</b>) with a nonplanar geometry obtained by regioselective cyclodehydrogenation. Triphenanthro-fused teropyrene <b>1</b> and pentaphenanthro-fused quateropy ...[more]

PMID: 33825484

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