title: Localized reduction of graphene oxide by electrogenerated naphthalene radical anions and subsequent diazonium electrografting.
abstract: Herein, we describe a new localized functionalization method of graphene oxide (GO) deposited on a silicon oxide surface. The functionalization starts with the reduction of GO by electrogenerated naphthalene radical anions. The source of reducers is a microelectrode moving close to the substrate in a typical scanning electrochemical microscopy (SECM) configuration. Then, the recovery of electronic conductivity upon reduction enables the selective electrochemical functionalization of the patterns. The illustrative example is the electrografting of reduced-GO with a diazonium salt bearing a protonated amino group that can further immobilize gold nanoparticles by simple immersion. This study opens new routes for the construction of multifunctional patterned surfaces.
authors.affiliation: CEA Saclay, IRAMIS, NIMBE, LICSEN , Gif-sur-Yvette Cedex, Paris F-91191, France.
authors.forename: Joël
authors.initials: J
authors.lastname: Azevedo
authors.forename: Laure
authors.initials: L
authors.lastname: Fillaud
authors.forename: Céline
authors.initials: C
authors.lastname: Bourdillon
authors.forename: Jean-Marc
authors.initials: JM
authors.lastname: Noël
authors.forename: Fréderic
authors.initials: F
authors.lastname: Kanoufi
authors.forename: Bruno
authors.initials: B
authors.lastname: Jousselme
authors.forename: Vincent
authors.initials: V
authors.lastname: Derycke
authors.forename: Stéphane
authors.initials: S
authors.lastname: Campidelli
authors.forename: Renaud
authors.initials: R
authors.lastname: Cornut