Synthesis of Structurally Well-Defined and Liquid-Phase-Processable Graphene Nanoribbons

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  • Akimitsu Narita, Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany.
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  • Xinliang Feng, Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany.
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  • Yenny Hernandez, Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany.
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  • Søren A Jensen, 1] Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany [2] FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands.
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  • Mischa Bonn, Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany.
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  • Huafeng Yang, School of Chemistry and Photon Science Institute, Manchester University, Oxford Road, Manchester, M139PL, UK.
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  • Ivan A Verzhbitskiy, Department of Physics, Free University Berlin, Arnimalle 14, 14195 Berlin, Germany.
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  • Cinzia Casiraghi, 1] School of Chemistry and Photon Science Institute, Manchester University, Oxford Road, Manchester, M139PL, UK [2] Department of Physics, Free University Berlin, Arnimalle 14, 14195 Berlin, Germany.
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  • Michael Ryan Hansen, Denmark
  • Amelie H R Koch, Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany.
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  • George Fytas, 1] Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany [2] Department of Materials Science, University of Crete and FORTH, Heraklion, Greece.
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  • Oleksandr Ivasenko, Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven Celestijnenlaan, 200 F, B-3001 Leuven, Belgium.
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  • Bing Li, Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven Celestijnenlaan, 200 F, B-3001 Leuven, Belgium.
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  • Kunal S Mali, Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven Celestijnenlaan, 200 F, B-3001 Leuven, Belgium.
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  • Tatyana Balandina, Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven Celestijnenlaan, 200 F, B-3001 Leuven, Belgium.
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  • Sankarapillai Mahesh, Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven Celestijnenlaan, 200 F, B-3001 Leuven, Belgium.
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  • Steven De Feyter, Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven Celestijnenlaan, 200 F, B-3001 Leuven, Belgium.
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  • Klaus Müllen, Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany.
The properties of graphene nanoribbons (GNRs) make them good candidates for next-generation electronic materials. Whereas 'top-down' methods, such as the lithographical patterning of graphene and the unzipping of carbon nanotubes, give mixtures of different GNRs, structurally well-defined GNRs can be made using a 'bottom-up' organic synthesis approach through solution-mediated or surface-assisted cyclodehydrogenation reactions. Specifically, non-planar polyphenylene precursors were first 'built up' from small molecules, and then 'graphitized' and 'planarized' to yield GNRs. However, fabrication of processable and longitudinally well-extended GNRs has remained a major challenge. Here we report a bottom-up solution synthesis of long (>200 nm) liquid-phase-processable GNRs with a well-defined structure and a large optical bandgap of 1.88 eV. Self-assembled monolayers of GNRs can be observed by scanning probe microscopy, and non-contact time-resolved terahertz conductivity measurements reveal excellent charge-carrier mobility within individual GNRs. Such structurally well-defined GNRs may prove useful for fundamental studies of graphene nanostructures, as well as the development of GNR-based nanoelectronics.
Original languageEnglish
JournalNature Chemistry
Volume6
Issue2
Pages (from-to)126-32
Number of pages7
ISSN1755-4330
DOIs
Publication statusPublished - Feb 2014

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