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Title

Quantifying the sensitivity of multipolar (dipolar, quadrupolar, and octapolar) surface plasmon resonances in silver nanoparticles: the effect of size, composition, and surface coating

AuthorsBastús, Neus G. ; Piella, Jordi ; Puntes, Víctor F.
Issue Date2016
PublisherAmerican Chemical Society
CitationLangmuir 32(1): 290-300 (2016)
AbstractThe effect of composition, size, and surface coating on the sensitivity of localized multipolar surface plasmon resonances has been spectroscopically investigated in high-quality silver colloidal solutions with precisely controlled sizes from 10 to 220 nm and well-defined surface chemistry. Surface plasmon resonance modes have been intensively characterized, identifying the size-dependence of dipolar, quadrupolar, and octapolar modes. Modifications of the NP's surface chemistry revealed the higher sensitivity of large sizes, long molecules, thiol groups, and low-order resonance modes. We also extend this study to gold nanoparticles, aiming to compare the sensitivity of both materials, quantifying the higher sensitivity of silver.
URIhttp://hdl.handle.net/10261/159845
Identifiersdoi: 10.1021/acs.langmuir.5b03859
e-issn: 1520-5827
issn: 0743-7463
Appears in Collections:(CIN2) Artículos
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