Plasmonic Polymers Unraveled Through Single Particle Spectroscopy

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dc.citation.journalTitleNanoscale
dc.contributor.authorSlaughter, Liane S.
dc.contributor.authorWang, Lin-Yung
dc.contributor.authorWillingham, Britain A.
dc.contributor.authorOlson, Jana M.
dc.contributor.authorSwanglap, Pattanawit
dc.contributor.authorDominguez-Medina, Sergio
dc.contributor.authorLink, Stephan
dc.contributor.orgLaboratory for Nanophotonics
dc.date.accessioned2014-09-09T16:04:20Z
dc.date.available2014-09-09T16:04:20Z
dc.date.issued2014
dc.description.abstractPlasmonic polymers are quasi one-dimensional assemblies of nanoparticles whose optical responses are governed by near-field coupling of localized surface plasmons. Through single particle extinction spectroscopy correlated with electron microscopy, we reveal the effect of the composition of the repeat unit, the chain length, and extent of disorder on the energies, intensities, and line shapes of the collective resonances of individual plasmonic polymers constructed from three different sizes of gold nanoparticles. Our combined experiment and theoretical analysis focuses on the superradiant plasmon mode, which results from the most attractive interactions along the nanoparticle chain and yields the lowest energy resonance in the spectrum. This superradiant mode redshifts with increasing chain length until an infinite chain limit, where additional increases in chain length cause negligible change in the energy of the superradiant mode. We find that, among plasmonic polymers of equal width comprising nanoparticles with different sizes, the onset of the infinite chain limit and its associated energy are dictated by the number of repeat units and not the overall length, of the polymer. The intensities and linewidths of the superradiant mode relative to higher energy resonances, however, differ as the size and number of nanoparticles are varied in the plasmonic polymers studied here. These findings provide general guidelines for engineering the energies, intensities, and line shapes of the collective optical response of plasmonic polymers constructed from nanoparticles with sizes ranging from a few tens to one hundred nanometers.
dc.identifier.citationSlaughter, Liane S., Wang, Lin-Yung, Willingham, Britain A., et al.. "Plasmonic Polymers Unraveled Through Single Particle Spectroscopy." <i>Nanoscale,</i> (2014) Royal Society of Chemistry: http://dx.doi.org/10.1039/C4NR02839B.
dc.identifier.doihttp://dx.doi.org/10.1039/C4NR02839B
dc.identifier.urihttps://hdl.handle.net/1911/77152
dc.language.isoeng
dc.publisherRoyal Society of Chemistry
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the Royal Society of Chemistry
dc.subject.keywordgold nanoparticles
dc.subject.keywordsurface plasmon resonance
dc.subject.keywordplasmon coupling
dc.subject.keywordsuper- and sub- radiant modes
dc.subject.keywordnanoparticle chains
dc.subject.keywordsingle particle spectroscopy
dc.titlePlasmonic Polymers Unraveled Through Single Particle Spectroscopy
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpost-print
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