title: Monolayer-protected gold nanoparticle coalescence induced by photogenerated radicals.
abstract: Acyl and alkyl radicals generated photochemically in a solution containing monolayer-protected gold nanoparticles are shown to efficiently liberate the alkylthiolate ligands into the solution as the thioacetyl or alkyl sulfide, respectively. This radical-induced reaction initiates a coalescence of the gold cores to facilitate an increase in core size. The photoinitiated radical reaction also liberates monolayers from two-dimensional gold surfaces.
authors.affiliation: Department of Chemistry, The University of Western Ontario, London, Ontario, Canada N6A 5B7.
authors.forename: Arnold J
authors.initials: AJ
authors.lastname: Kell
authors.forename: Abdolhamid
authors.initials: A
authors.lastname: Alizadeh
authors.forename: Li
authors.initials: L
authors.lastname: Yang
authors.forename: Mark S
authors.initials: MS
authors.lastname: Workentin