Plasmonic Polymers Unraveled Through Single Particle Spectroscopy

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dc.citation.journalTitleNanoscaleen_US
dc.contributor.authorSlaughter, Liane S.en_US
dc.contributor.authorWang, Lin-Yungen_US
dc.contributor.authorWillingham, Britain A.en_US
dc.contributor.authorOlson, Jana M.en_US
dc.contributor.authorSwanglap, Pattanawiten_US
dc.contributor.authorDominguez-Medina, Sergioen_US
dc.contributor.authorLink, Stephanen_US
dc.contributor.orgLaboratory for Nanophotonicsen_US
dc.date.accessioned2014-09-09T16:04:20Zen_US
dc.date.available2014-09-09T16:04:20Zen_US
dc.date.issued2014en_US
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.en_US
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.en_US
dc.identifier.doihttp://dx.doi.org/10.1039/C4NR02839Ben_US
dc.identifier.urihttps://hdl.handle.net/1911/77152en_US
dc.language.isoengen_US
dc.publisherRoyal Society of Chemistryen_US
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 Chemistryen_US
dc.subject.keywordgold nanoparticlesen_US
dc.subject.keywordsurface plasmon resonanceen_US
dc.subject.keywordplasmon couplingen_US
dc.subject.keywordsuper- and sub- radiant modesen_US
dc.subject.keywordnanoparticle chainsen_US
dc.subject.keywordsingle particle spectroscopyen_US
dc.titlePlasmonic Polymers Unraveled Through Single Particle Spectroscopyen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
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