Spectral variation of fluorescence lifetime near single metal nanoparticles

Jia Li; Alexey V. Krasavin; Linden Webster; P. Segovia; Anatoly V. Zayats; David Richards

doi:10.1038/srep21349

Spectral variation of fluorescence lifetime near single metal nanoparticles

Jia Li, Alexey V. Krasavin, Linden Webster, P. Segovia, Anatoly V. Zayats, David Richards

Physics

King's College London

Research output: Contribution to journal › Article › peer-review

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Abstract

We explore the spectral dependence of fluorescence enhancement and the associated lifetime modification of fluorescent molecules coupled to single metal nanoparticles. Fluorescence lifetime imaging microscopy and single-particle dark-field spectroscopy are combined to correlate the dependence of fluorescence lifetime reduction on the spectral overlap between the fluorescence emission and the localised surface plasmon (LSP) spectra of individual gold nanoparticles. A maximum lifetime reduction is observed when the fluorescence and LSP resonances coincide, with good agreement provided by numerical simulations. The explicit comparison between experiment and simulation, that we obtain, offers an insight into the spectral engineering of LSP mediated fluorescence and may lead to optimized application in sensing and biomedicine.

Original language	English
Pages (from-to)	21349
Journal	Scientific Reports
Volume	6
DOIs	https://doi.org/10.1038/srep21349
Publication status	Published - 15 Feb 2016

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srep21349Final published version, 999 KBLicence: CC BY

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title = "Spectral variation of fluorescence lifetime near single metal nanoparticles",

abstract = "We explore the spectral dependence of fluorescence enhancement and the associated lifetime modification of fluorescent molecules coupled to single metal nanoparticles. Fluorescence lifetime imaging microscopy and single-particle dark-field spectroscopy are combined to correlate the dependence of fluorescence lifetime reduction on the spectral overlap between the fluorescence emission and the localised surface plasmon (LSP) spectra of individual gold nanoparticles. A maximum lifetime reduction is observed when the fluorescence and LSP resonances coincide, with good agreement provided by numerical simulations. The explicit comparison between experiment and simulation, that we obtain, offers an insight into the spectral engineering of LSP mediated fluorescence and may lead to optimized application in sensing and biomedicine.",

author = "Jia Li and Krasavin, {Alexey V.} and Linden Webster and P. Segovia and Zayats, {Anatoly V.} and David Richards",

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T1 - Spectral variation of fluorescence lifetime near single metal nanoparticles

AU - Li, Jia

AU - Krasavin, Alexey V.

AU - Webster, Linden

AU - Segovia, P.

AU - Zayats, Anatoly V.

AU - Richards, David

PY - 2016/2/15

Y1 - 2016/2/15

N2 - We explore the spectral dependence of fluorescence enhancement and the associated lifetime modification of fluorescent molecules coupled to single metal nanoparticles. Fluorescence lifetime imaging microscopy and single-particle dark-field spectroscopy are combined to correlate the dependence of fluorescence lifetime reduction on the spectral overlap between the fluorescence emission and the localised surface plasmon (LSP) spectra of individual gold nanoparticles. A maximum lifetime reduction is observed when the fluorescence and LSP resonances coincide, with good agreement provided by numerical simulations. The explicit comparison between experiment and simulation, that we obtain, offers an insight into the spectral engineering of LSP mediated fluorescence and may lead to optimized application in sensing and biomedicine.

AB - We explore the spectral dependence of fluorescence enhancement and the associated lifetime modification of fluorescent molecules coupled to single metal nanoparticles. Fluorescence lifetime imaging microscopy and single-particle dark-field spectroscopy are combined to correlate the dependence of fluorescence lifetime reduction on the spectral overlap between the fluorescence emission and the localised surface plasmon (LSP) spectra of individual gold nanoparticles. A maximum lifetime reduction is observed when the fluorescence and LSP resonances coincide, with good agreement provided by numerical simulations. The explicit comparison between experiment and simulation, that we obtain, offers an insight into the spectral engineering of LSP mediated fluorescence and may lead to optimized application in sensing and biomedicine.

UR - http://www.nature.com/articles/srep22680

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DO - 10.1038/srep21349

M3 - Article

SN - 2045-2322

VL - 6

SP - 21349

JO - Scientific Reports

JF - Scientific Reports

ER -

Spectral variation of fluorescence lifetime near single metal nanoparticles

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