title: Sulfur-functionalized graphene oxide by epoxide ring-opening.
abstract: The treatment of graphene oxide (GO) with potassium thioacetate followed by an aqueous work-up yields a new material via the ring-opening of the epoxide groups. The new material is a thiol-functionalized GO (GO-SH) which is able to undergo further functionalization. Reaction with butyl bromide gives another new material, GO-SBu, which shows significantly enhanced thermal stability compared to both GO and GO-SH. The thiol-functionalized GO material showed a high affinity for gold, as demonstrated by the selective deposition of a high density of gold nanoparticles.
authors.affiliation: Department of Chemistry, University of Warwick, Coventry, CV4 7AL (UK).
authors.forename: Helen R
authors.initials: HR
authors.lastname: Thomas
authors.forename: Alexander J
authors.initials: AJ
authors.lastname: Marsden
authors.forename: Marc
authors.initials: M
authors.lastname: Walker
authors.forename: Neil R
authors.initials: NR
authors.lastname: Wilson
authors.forename: Jonathan P
authors.initials: JP
authors.lastname: Rourke
keywords: epoxide opening; gold nanoparticles; graphene; graphene oxide; thiols