title: Surface plasmon mediated chemical solution deposition of gold nanoparticles on a nanostructured silver surface at room temperature.
abstract: Sub-15 nm Au nanoparticles have been fabricated on a nanostructured Ag surface at room temperature via a liquid-phase chemical deposition upon excitation of the localized surface plasmon resonance (SPR). Measurement of the SPR-mediated photothermal local heating of the substrate surface by a molecular thermometry strategy indicated the temperature to be above 230 °C, which led to an efficient decomposition of CH(3)AuPPh(3) to form Au nanoparticles on the Ag surface. Particle sizes were tunable between 3 and 10 nm by adjusting the deposition time. A surface-limited growth model for Au nanoparticles on Ag is consistent with the deposition kinetics.
authors.affiliation: Department of Chemistry and Center for Nanostructured Electronic Materials, University of Florida, Gainesville, Florida 32611, United States.
authors.forename: Jingjing
authors.initials: J
authors.lastname: Qiu
authors.forename: Yung-Chien
authors.initials: YC
authors.lastname: Wu
authors.forename: Yi-Chung
authors.initials: YC
authors.lastname: Wang
authors.forename: Mark H
authors.initials: MH
authors.lastname: Engelhard
authors.forename: Lisa
authors.initials: L
authors.lastname: McElwee-White
authors.forename: Wei David
authors.initials: WD
authors.lastname: Wei
mesh_terms: D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D012834:Silver / Q000737:chemistry*; D012996:Solutions; D020349:Surface Plasmon Resonance; D013499:Surface Properties; D013696:Temperature
chemical_list: D012996:Solutions; D012834:Silver; D006046:Gold