Bottom-up Synthesis and Characterization of Porous 12-Atom-Wide Armchair Graphene Nanoribbons
Although several porous carbon/graphene nanoribbons (GNRs) have been prepared, a direct comparison of the electronic properties between a nonporous GNR and its periodically perforated counterpart is still missing. Here, we report the synthesis of porous 12-atom-wide armchair-edged GNRs from a bromoarene precursor on a Au(111) surface via hierarchical Ullmann and dehydrogenative coupling. The selective formation of porous 12-GNRs was achieved through thermodynamic and kinetic reaction control combined with tailored precursor design. The structure and electronic properties of the porous 12-GNR were elucidated by scanning tunneling microscopy/spectroscopy and density functional theory calculations, revealing that the pores induce a 2.17 eV band gap increase compared to the nonporous 12-AGNR on the same surface.
Authors
- J. Michael Gottfried (ORCID: https://orcid.org/0000-0001-5579-2568)
- Jörg Sundermeyer (ORCID: https://orcid.org/0000-0001-8244-8201)
- Tobias Vollgraff (ORCID: https://orcid.org/0000-0002-0684-0065)
- Tim Naumann
- Wolfgang Hieringer
- Christian Neiß (ORCID: https://orcid.org/0000-0001-7213-0187)
- Qitang Fan (ORCID: https://orcid.org/0000-0002-2629-6212)
- Jose Martinez‐Castro (ORCID: https://orcid.org/0000-0001-7249-2567)
- Andreas Görling (ORCID: https://orcid.org/0000-0002-1831-3318)
- Rustem Bolat
- Raviraj Mandalia (ORCID: https://orcid.org/0000-0001-9606-6749)
- F. Stefan Tautz (ORCID: https://orcid.org/0000-0003-3583-2379)
- Simon Werner
- Zilin Ruan (ORCID: https://orcid.org/0000-0002-3804-4573)
- Tabea Koehler
Institutions
- University of Science and Technology of China (CN)
- Philipps University of Marburg (DE)
- Forschungszentrum Jülich (DE)
- Friedrich-Alexander-Universität Erlangen-Nürnberg (DE)
- Hefei National Center for Physical Sciences at Nanoscale (CN)
- Jülich Aachen Research Alliance (DE)
- RWTH Aachen University (DE)
Publication Details
- Journal
- Nano Letters
- Published
- 2024-08-26
- DOI
- https://doi.org/10.1021/acs.nanolett.4c01106
- Citations
- 15
- Primary Topic
- Graphene research and applications
- Type
- article
- Field-Weighted Citation Impact
- 1.76
Funders
- Alexander von Humboldt-Stiftung
- Friedrich-Alexander-Universität Erlangen-Nürnberg
- Deutsche Forschungsgemeinschaft
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- H2020 European Research Council