title: Capping agent promoted oxidation of gold nanoparticles: cetyl trimethylammonium bromide.
abstract: Capping agents, key for nanoparticle stability, may hugely influence chemical behaviour. We show that differently capped gold nanoparticles, with either citrate or cetyl trimethylammonium bromide (CTAB) capping agents, show qualitatively different electron transfer properties. Specifically through cyclic voltammetry and nanoimpact studies the CTAB promoted dissolution of gold nanoparticles is shown, highlighting the active role which capping agents can play in charge transfer.
authors.affiliation: Department of Chemistry, PTCL, University of Oxford, South Parks Road, Oxford, OX13QZ, UK. tschulik.kristina@gmail.com kristina.tschulik@ruhr-uni-bochum.de richard.compton@chem.ox.ac.uk.
authors.forename: Blake J
authors.initials: BJ
authors.lastname: Plowman
authors.forename: Kristina
authors.initials: K
authors.lastname: Tschulik
authors.forename: Neil P
authors.initials: NP
authors.lastname: Young
authors.forename: Richard G
authors.initials: RG
authors.lastname: Compton