Organic covalent patterning of nanostructured graphene with selectivity at the atomic level

Navarro, Juan Jesús and Leret, Sofía and Calleja, Fabián and Stradi, Daniele and Black, Andrés and Bernardo-Gavito, Ramón and Garnica, Manuela and Granados, Daniel and Vázquez De Parga, Amadeo L. and Pérez, Emilio M. and Miranda, Rodolfo (2016) Organic covalent patterning of nanostructured graphene with selectivity at the atomic level. Nano Letters, 16 (1). pp. 355-361. ISSN 1530-6984

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Abstract

Organic covalent functionalization of graphene with long-range periodicity is highly desirable-it is anticipated to provide control over its electronic, optical, or magnetic properties-and remarkably challenging. In this work we describe a method for the covalent modification of graphene with strict spatial periodicity at the nanometer scale. The periodic landscape is provided by a single monolayer of graphene grown on Ru(0001) that presents a moiré pattern due to the mismatch between the carbon and ruthenium hexagonal lattices. The moiré contains periodically arranged areas where the graphene-ruthenium interaction is enhanced and shows higher chemical reactivity. This phenomenon is demonstrated by the attachment of cyanomethyl radicals (CH2CN•) produced by homolytic breaking of acetonitrile (CH3CN), which is shown to present a nearly complete selectivity (>98%) binding covalently to graphene on specific atomic sites. This method can be extended to other organic nitriles, paving the way for the attachment of functional molecules.

Item Type: Journal Article
Journal or Publication Title: Nano Letters
Additional Information: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © 2015 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/acs.nanolett.5b03928
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/2200/2210
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 79000
Deposited By: ep_importer_pure
Deposited On: 13 Apr 2016 08:00
Refereed?: Yes
Published?: Published
Last Modified: 23 Oct 2019 05:32
URI: https://eprints.lancs.ac.uk/id/eprint/79000

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