Journal
CHEMISTRY OF MATERIALS
Volume 20, Issue 22, Pages 6939-6944Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm800882n
Keywords
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Funding
- National Natural Science Foundation of China [60571045]
- National 863 Project of China [2007AA03Z305]
- CAS/SAFEA international cooperation team
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Monodisperse Au, Ag, and Au3Pd nanoparticles (NPs) with narrow size distribution are prepared by direct reaction of the related metal salt with oleylamine in toluene. Oleylamine serves as both a reducing agent and a surfactant in the synthesis. The sizes and shape of these NPs are tuned by reaction temperatures. The hydrophobic oleylamine-coated NPs can be made water soluble by replacing oleylamine with 3-mercaptopropionic acid. Both surface plasmonic resonance (SPR) and surface enhanced Raman scattering (SERS) observed from the AU and Ag NPs are found to be NP size- and surface-dependent.
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