title: Purification of dodecanethiol derivatised gold nanoparticles.
abstract: Monolayer protected gold nanoparticles synthesised by a two-phase method contain a significant amount of tetraoctylammonium bromide (TOABr), the quaternary ammonium salt used as the phase transfer reagent, as a persistently retained impurity. A simple purification protocol is described.
authors.affiliation: Centre for Nanoscale Science, Department of Chemistry, The University of Liverpool, Liverpool, UK L69 7ZD.
authors.forename: Cecilia A
authors.initials: CA
authors.lastname: Waters
authors.forename: Allan J
authors.initials: AJ
authors.lastname: Mills
authors.forename: Kathleen A
authors.initials: KA
authors.lastname: Johnson
authors.forename: David J
authors.initials: DJ
authors.lastname: Schiffrin