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J Am Chem Soc. 2013 Jan 9;135(1):38-41. doi: 10.1021/ja309392x. Epub 2012 Dec 21.

Surface plasmon mediated chemical solution deposition of gold nanoparticles on a nanostructured silver surface at room temperature.

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1
Department of Chemistry and Center for Nanostructured Electronic Materials, University of Florida, Gainesville, Florida 32611, United States.

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.

PMID:
23241020
DOI:
10.1021/ja309392x
[Indexed for MEDLINE]
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