Novel single-phase and gram-scale synthesis of thiol-uncapped stable colloidal gold nanoparticles.
Here we describe a new chemical route for obtaining nanometer-sized gold(0) particles with a narrow size distribution and a band gap of 1.45 eV. The synthetic method is based on the reduction of AuBr3 with t-BuOLi activated LiH in dioxane. The single-phase process developed allows the production of large quantities of stable thiol-uncapped gold(0) nanoparticles. These clusters were further used for the production of monodisperse Au nanoparticles with controlled surface properties through ligand exchange with 1-dodecanethiol or 1-decylamine.
Jurvilliers
Xavier
X
Laboratoire de Synthèse Organométallique et Réactivité (UMR 7565), Université Henri Poincaré, Nancy I, BP 239, 54506 Vandoeuvre les Nancy Cedex, France.
Schneider
l Raphaël
lR
Fort
Yves
Y
Walcarius
Alain
A
Ghanbaja
Jaafar
J
D003102:Colloids / Q000737:chemistry*; D004146:Dioxanes / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D010084:Oxidation-Reduction; D013438:Sulfhydryl Compounds / Q000138:chemical synthesis*; D013499:Surface Properties; D014961:X-Ray Diffraction
D003102:Colloids; D004146:Dioxanes; D013438:Sulfhydryl Compounds; D006046:Gold; C025223:1,4-dioxane