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    Plasmonic Polymers Unraveled Through Single Particle Spectroscopy

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    Author
    Slaughter, Liane S.; Wang, Lin-Yung; Willingham, Britain A.; Olson, Jana M.; Swanglap, Pattanawit; More... Dominguez-Medina, Sergio; Link, Stephan Less...
    Date
    2014
    Abstract
    Plasmonic 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.
    Citation
    Slaughter, Liane S., Wang, Lin-Yung, Willingham, Britain A., et al.. "Plasmonic Polymers Unraveled Through Single Particle Spectroscopy." Nanoscale, (2014) Royal Society of Chemistry: http://dx.doi.org/10.1039/C4NR02839B.
    Published Version
    http://dx.doi.org/10.1039/C4NR02839B
    Keyword
    gold nanoparticles; surface plasmon resonance; plasmon coupling; super- and sub- radiant modes; nanoparticle chains; More... single particle spectroscopy Less...
    Type
    Journal article
    Publisher
    Royal Society of Chemistry
    Citable link to this page
    https://hdl.handle.net/1911/77152
    Rights
    This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the Royal Society of Chemistry
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    • Chemistry Publications [635]
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    • Faculty Publications [4976]

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    Home | FAQ | Contact Us | Privacy Notice | Accessibility Statement
    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892
    Site Map