title: Size-selective separation of gold nanoparticles using isoelectric focusing electrophoresis (IEF).
abstract: Isoelectric focusing in a polyacrylamide pH gradient gel is used to analyze the size distribution of gold nanoparticles synthesized by a chemical route with mercaptosuccinic acid as a ligand. The isoelectric point of the nanoparticles is shown to be size dependent, allowing fractionation by electrophoresis. Each fraction has a narrow size distribution with a standard deviation lower than 0.4 nm.
authors.affiliation: Ecole Polytechnique Fudurale de Lausanne, Laboratoire d'Electrochimie Physique et Analytique, 1015-Lausanne, Switzerland.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Arnaud
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Abid
authors.forename: Christophe
authors.initials: C
authors.lastname: Roussel
authors.forename: Hubert H
authors.initials: HH
authors.lastname: Girault