Synthesis of structurally well-defined and liquid-phase-processable graphene nanoribbons
Narita A, Feng X, Hernandez Y, Jensen SA, Bonn M, Yang H, Verzhbitskiy IA, Casiraghi C, Hansen MR, Koch AHR, Fytas G, Ivasenko O, Li B, Mali KS, Balandina T, Mahesh S, De Feyter S, Muellen K (2014)
Publication Type: Journal article
Publication year: 2014
Journal
Book Volume: 6
Pages Range: 126-132
Journal Issue: 2
DOI: 10.1038/nchem.1819
Abstract
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. © 2014 Macmillan Publishers Limited. All rights reserved.
Involved external institutions
Max-Planck-Institut für Polymerforschung (MPI-P) / Max Planck Institute for Polymer Research
Germany (DE)
University of Manchester
United Kingdom (GB)
Freie Universität Berlin
Germany (DE)
Katholieke Universiteit Leuven (KUL) / Catholic University of Leuven
Belgium (BE)
Germany (DE)
University of Manchester
United Kingdom (GB)
Freie Universität Berlin
Germany (DE)
Katholieke Universiteit Leuven (KUL) / Catholic University of Leuven
Belgium (BE)
How to cite
APA:
Narita, A., Feng, X., Hernandez, Y., Jensen, S.A., Bonn, M., Yang, H.,... Muellen, K. (2014). Synthesis of structurally well-defined and liquid-phase-processable graphene nanoribbons. Nature Chemistry, 6(2), 126-132. https://doi.org/10.1038/nchem.1819
MLA:
Narita, Akimitsu, et al. "Synthesis of structurally well-defined and liquid-phase-processable graphene nanoribbons." Nature Chemistry 6.2 (2014): 126-132.
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