Bottom-up Synthesis of N$=$13 Sulfur-doped Graphene Nanoribbons.

ORAL

Abstract

Substitutional doping of graphene nanoribbons (GNRs) with heteroatoms is a principal strategy to fine-tune the electronic structure of GNRs for future device applications. Up to now, however, edge-doping in bottom-up fabricated GNRs has exclusively relied on the introduction of nitrogen heteroatoms in the form of pyridine and pyrimidine rings along the edges of chevron GNRs. Here we report the bottom-up synthesis and characterization of atomically-precise N$=$13 armchair graphene nanoribbons (S-13-AGNRs) wherein alternating (CH)$_{\mathrm{2}}$ groups lining the edges of the GNRs have been replaced by sulfur atoms. We study the resultant GNR with scanning tunneling microscopy (STM) and spectroscopy (STS). Our experimental results are consistent with first-principles simulations of the S-13-AGNR electronic structure.

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Authors

  • Trinity Joshi

    University of California, Berkeley

  • Giang Nguyen

    University of California, Berkeley

  • Francesca Toma

    University of California, Berkeley

  • Ting Cao

    Physics Department, UC Berkeley and Lawrence Berkeley National Lab, University of California at Berkeley and Lawrence Berkeley National Laboratory, University of California, Berkeley

  • Zahra Pedramrazi

    University of California, Berkeley

  • Chen Chen

    University of California, Berkeley

  • Daniel J. Rizzo

    University of California, Berkeley, UC Berkeley

  • Christopher Bronner

    University of California, Berkeley

  • Yen-Chia Chen

    University of California, Berkeley

  • Steven G. Louie

    University of California at Berkeley and Lawrence Berkeley National Lab, Physics Department, UC Berkeley and Lawrence Berkeley National Lab, University of California at Berkeley, University of California, Berkeley, University of California at Berkeley and Lawrence Berkeley National Laboratory, UC Berkeley and LBNL, UCB Physics and LBNL MSD

  • Felix Fischer

    University of California, Berkeley

  • Michael F. Crommie

    Univ of California - Berkeley, UC Berkeley/Kavli ENSI/LBNL, University of California, Berkeley, UCB Physics, LBNL MSD, and Kavli ENSI