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Title

High-yield synthesis and optical response of gold nanostars

AuthorsSenthil Kumar, Pandian; Pastoriza-Santos, Isabel ; Rodríguez González, Benito.; García ce Abajo, F. Javier; Liz-Marzán, Luis Manuel
Issue Date2008
PublisherInstitute of Physics Publishing
CitationNanotechnology 19: 015606 (2008)
AbstractMultipod Au nanoparticles (nanostars) with single crystalline tips were synthesized in extremely high yield through the reduction of HAuCl4 in a concentrated solution of poly(vinylpyrrolidone) (PVP) in N,N-dimethylformamide (DMF), in the presence of preformed Au nanoparticle seeds, but with no need for external energy sources. Nanostar dispersions display a well-defined optical response, which was found (through theoretical modeling) to comprise a main mode confined within the tips and a secondary mode confined in the central body. Calculations of the surface enhanced Raman scattering (SERS) response additionally show that this morphology will be relevant for sensing applications. © IOP Publishing Ltd.
URIhttp://hdl.handle.net/10261/56795
DOI10.1088/0957-4484/19/01/015606
Identifiersdoi: 10.1088/0957-4484/19/01/015606
issn: 0957-4484
Appears in Collections:(CFMAC-IO) Artículos
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