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On-surface Synthesis of a Chiral Graphene Nanoribbon with Mixed Edge Structure.

ABSTRACT: Chiral graphene nanoribbons represent an important class of graphene nanomaterials with varying combinations of armchair and zigzag edges conferring them unique structure-dependent electronic properties. Here, we describe the on-surface synthesis of an unprecedented cove-edge chiral GNR with a benzo-fused backbone on a Au(111) surface using 2,6-dibromo-1,5-diphenylnaphthalene as precursor. The initial precursor self-assembly and the formation of the chiral GNRs upon annealing are revealed, along with a relatively small electronic bandgap of approximately 1.6?eV, by scanning tunnelling microscopy and spectroscopy.

SUBMITTER: Keerthi A

PROVIDER: S-EPMC7756733 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature

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On-surface Synthesis of a Chiral Graphene Nanoribbon with Mixed Edge Structure.

Keerthi Ashok A Sánchez-Sánchez Carlos C Deniz Okan O Ruffieux Pascal P Schollmeyer Dieter D Feng Xinliang X Narita Akimitsu A Fasel Roman R Müllen Klaus K

Chemistry, an Asian journal 20201012 22

Chiral graphene nanoribbons represent an important class of graphene nanomaterials with varying combinations of armchair and zigzag edges conferring them unique structure-dependent electronic properties. Here, we describe the on-surface synthesis of an unprecedented cove-edge chiral GNR with a benzo-fused backbone on a Au(111) surface using 2,6-dibromo-1,5-diphenylnaphthalene as precursor. The initial precursor self-assembly and the formation of the chiral GNRs upon annealing are revealed, along ...[more]

PMID: 32955160

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