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On‐surface Synthesis of a Chiral Graphene Nanoribbon with Mixed Edge Structure
Author(s) -
Keerthi Ashok,
SánchezSánchez Carlos,
Deniz Okan,
Ruffieux Pascal,
Schollmeyer Dieter,
Feng Xinliang,
Narita Akimitsu,
Fasel Roman,
Müllen Klaus
Publication year - 2020
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.202001008
Subject(s) - graphene , zigzag , materials science , scanning tunneling microscope , graphene nanoribbons , annealing (glass) , nanotechnology , electronic structure , band gap , nanomaterials , chemical physics , optoelectronics , computational chemistry , chemistry , composite material , geometry , mathematics
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.