Ultrafast dynamics in plasmon–exciton core–shell systems: the role of heat

Stete, Felix; Bargheer, Matias; Koopman, Wouter

doi:10.1039/d3nr02817h

Nanoscale

2023

DOI: 10.1039/d3nr02817h

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Ultrafast dynamics in plasmon–exciton core–shell systems: the role of heat

Felix Stete,

Matias Bargheer,

Wouter Koopman

Abstract: Strong coupling between plasmons and excitons gives rise to new hybrid polariton states with various fields of potential applications. Despite a plethora of research on plasmon–exciton systems, their transient behaviour...

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2024

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Incorporation strategy for organic dyes into gold nanoparticle supercrystals

Kesarwani,

Juergensen,

Staechelin

et al. 2024

The Journal of Chemical Physics

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Ordered arrays of plasmonic nanoparticles, supercrystals can lead to the formation of plasmon-polaritons. Coupling light emitters with plasmon polaritons might allow the formation of exciton–plasmon polaritons with properties tuneable by the supercrystal design. To construct such optically active materials, the inclusion of emitters is imperative. The addition of organic dyes without affecting the periodic order of the nanocrystals is difficult, as post-formation protocols might dissolve the supercrystals, and pre-formation addition might affect the self-assembly process. Here, we present an exemplary strategy to functionalize gold nanoparticles prior to self-assembly with a cyanine isothiocyanate dye that was obtained by a straightforward reaction of the amine functionalized dye with carbon disulfide. In the second step, the nanoparticles are functionalized with a thiol-terminated polystyrene, which stabilizes the nanoparticles and governs the self-assembly process. The dye can be integrated in a quantitative fashion, and the nanoparticles can be self-assembled into supercrystals. The strategy should be applicable in general for amine functionalized dyes, which is a common modification.

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Incorporation strategy for organic dyes into gold nanoparticle supercrystals

Kesarwani,

Juergensen,

Staechelin

et al. 2024

The Journal of Chemical Physics

View full text Add to dashboard Cite

show abstract

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Ultrafast dynamics in plasmon–exciton core–shell systems: the role of heat

Abstract: Strong coupling between plasmons and excitons gives rise to new hybrid polariton states with various fields of potential applications. Despite a plethora of research on plasmon–exciton systems, their transient behaviour...

Cited by 1 publication

References 41 publications

Incorporation strategy for organic dyes into gold nanoparticle supercrystals

Incorporation strategy for organic dyes into gold nanoparticle supercrystals

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