title: Synthesis of tubular gold and silver nanoshells using silica nanowire core templates.
abstract: We report the synthesis of tubular gold and silver nanoshells on silica nanowire core templates in solution. Silica nanowires were synthesized and characterized with optical and NMR methods. Gold nanoparticle seeds (2 to 3 nm) with weak repulsive surfactants such as tetrakis-hydroxymethyl-phosphonium chloride (THPC) were conjugated to the surface of these nanowires. A regrowth process was initiated from these nanoparticles on the surface of the silica nanowires dispersed in gold or silver stock solutions in the presence of reducing agents. Micrometers-long gold and silver tubular nanoshells (80-150 nm o.d.) were made, fully covering the silica nanowires.
authors.affiliation: Department of Chemistry, University of California, Davis, California 95616, USA.
authors.forename: Yongquan
authors.initials: Y
authors.lastname: Qu
authors.forename: Rhiannon
authors.initials: R
authors.lastname: Porter
authors.forename: Fang
authors.initials: F
authors.lastname: Shan
authors.forename: Joshua D
authors.initials: JD
authors.lastname: Carter
authors.forename: Ting
authors.initials: T
authors.lastname: Guo