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Nano Lett. 2008 Oct;8(10):3481-7. doi: 10.1021/nl8024278. Epub 2008 Aug 26.

Plexcitonic nanoparticles: plasmon-exciton coupling in nanoshell-J-aggregate complexes.

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  • 1Department of Electrical and Computer Engineering, Laboratory for Nanophotonics, Rice University, 6100 Main Street, Houston, Texas 77005, USA.

Abstract

Stable Au nanoshell-J-aggregate complexes are formed that exhibit coherent coupling between the localized plasmons of a nanoshell and the excitons of molecular J-aggregates adsorbed on its surface. By tuning the nanoshell plasmon energies across the exciton line of the J-aggregate, plasmon-exciton coupling energies for these complexes are obtained. The strength of this interaction is dependent on the specific plasmon mode of the nanoparticle coupled to the J-aggregate exciton. From a model based on Gans theory, we obtain an expression for the plasmon-exciton hybridized states of the complex.

PMID:
18729410
[PubMed - indexed for MEDLINE]

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