Bottom-up graphene-nanoribbon fabrication reveals chiral edges and enantioselectivity

Patrick Han, Kazuto Akagi, Filippo Federici Canova, Hirotaka Mutoh, Susumu Shiraki, Katsuya Iwaya, Paul S. Weiss, Naoki Asao, Taro Hitosugi

Research output: Contribution to journalArticlepeer-review

147 Citations (Scopus)

Abstract

We produce precise chiral-edge graphene nanoribbons on Cu{111} using self-assembly and surface-directed chemical reactions. We show that, using specific properties of the substrate, we can change the edge conformation of the nanoribbons, segregate their adsorption chiralities, and restrict their growth directions at low surface coverage. By elucidating the molecular-assembly mechanism, we demonstrate that our method constitutes an alternative bottom-up strategy toward synthesizing defect-free zigzag-edge graphene nanoribbons.

Original languageEnglish
Pages (from-to)9181-9187
Number of pages7
JournalACS Nano
Volume8
Issue number9
DOIs
Publication statusPublished - 2014 Sep 23

Keywords

  • bottom-up fabrication
  • graphene nanoribbons
  • scanning tunneling microscopy
  • surface-assisted molecular assembly

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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