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Journal of Nanoparticle Research

Erschienen in:

01.05.2013 | Brief Communication

Surface-enhanced Raman effect in hybrid metal–semiconductor nanoparticle assemblies

verfasst von: Vanni Lughi, Alois Bonifacio, Matteo Barbone, Lucia Marsich, Valter Sergo

Erschienen in: Journal of Nanoparticle Research | Ausgabe 5/2013

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Abstract

Hybrid metal–semiconductor nanoparticles consisting of silver nanoparticle cores (AgNPs) coated with a layer of CdSe quantum dots (QDs) have been studied by Raman spectroscopy. The hybrid nanoparticles were prepared via electrostatic interaction by mixing aqueous suspensions of QDs and AgNPs, where opposite charges on the AgNPs and QDs surfaces were induced by opportunely selected capping agents. Assemblies of such hybrid nanoparticles show an increased intensity of the Raman spectrum of up to 500 times, when compared to that of the sole QDs. This enhancement is attributed to the SERS effect (Surface-enhanced Raman scattering). Such enhancement of the Raman modes suggests several opportunities for further research, both in imaging and sensing applications.

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Nächster Artikel Quasi-critical fluctuations: a novel state of matter?

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Titel: Surface-enhanced Raman effect in hybrid metal–semiconductor nanoparticle assemblies
verfasst von: Vanni Lughi
Alois Bonifacio
Matteo Barbone
Lucia Marsich
Valter Sergo
Publikationsdatum: 01.05.2013
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 5/2013
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-013-1663-9

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