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Electronically Engineered Nanoporous Graphene

ORAL

Abstract

Recent advances in the synthesis of graphene nanoribbons using on-surface bottom-up techniques have enabled fabrication of not only atomically well-defined one-dimensional structures, but also two-dimensional structures such as nanoporous graphenes. These are particularly interesting for applications due to their sieve-like topology. Here we present a new methodology for creating covalently connected, fully conjugated two-dimensional graphene structures through the utilization of cyclopentadiene (CP) moieties. CP elements exhibit a propensity to initiate fusion between nanoribbons and result in a two-dimensional structure with well-defined interface topology. The resulting new material is analyzed using scanning tunneling microscopy (STM), scanning tunneling spectroscopy (STS), and bond-resolved scanning tunneling microscopy (BRSTM). We observe emergent interface-localized electronic states that hybridize to yield a dispersive two-dimensional band of states at an energy inside the bandgap of an isolated GNR.

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Presenters

  • Peter Jacobse

    University of California, Berkeley

Authors

  • Peter Jacobse

    University of California, Berkeley

  • Ryan McCurdy

    University of California, Berkeley

  • Daniel Rizzo

    University of California, Berkeley

  • Jingwei Jiang

    University of California, Berkeley, Physics, University of California, Berkeley

  • Paul L Butler

    Solid State Spectrsocopy, Max Planck Institute for Solid State Research, University of California, Berkeley

  • Gregory Veber

    University of California, Berkeley

  • Steven Louie

    University of California at Berkeley, and Lawrence Berkeley National Laboratory, Department of Physics, University of California, Berkeley, Berkeley, California 94720, USA and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, C, University of California, Berkeley, Department of Physics, University of California, Berkeley, Lawrence Berkeley National Laboratory and University of California at Berkeley, Department of Physics, University of California at Berkeley and Lawrence Berkeley National Laboratory, Department of Physics, UC Berkeley, Physics, Unviersyt of Calfornia, Berkeley, Physics, University of California, Berkeley, Physics, University of California, Berkeley and Lawrence Berkeley National Lab

  • Felix Fischer

    University of California, Berkeley

  • Michael F Crommie

    Lawrence Berkeley National Lab and UC Berkeley, University of California, Berkeley