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    Rights statement: 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

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

Research output: Contribution to journalJournal article

Published
  • Juan Jesús Navarro
  • Sofía Leret
  • Fabián Calleja
  • Daniele Stradi
  • Andrés Black
  • Ramón Bernardo-Gavito
  • Manuela Garnica
  • Daniel Granados
  • Amadeo L. Vázquez De Parga
  • Emilio M. Pérez
  • Rodolfo Miranda
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<mark>Journal publication date</mark>13/01/2016
<mark>Journal</mark>Nano Letters
Issue number1
Volume16
Number of pages7
Pages (from-to)355-361
Publication statusPublished
Early online date1/12/15
Original languageEnglish

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.

Bibliographic note

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