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graphene nanoribbons (S-13-AGNRs) wherein alternating (CH)$_{\mathrm{2}}$ groups lining the edges of the GNRs have been replaced by sulfur atoms.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