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Enhancement and Quenching of Single-Molecule Fluorescence

Anger, Pascal, Bharadwaj, Palash, Novotny, Lukas·2006·Physical Review Letters

Abstract

We present an experimental and theoretical study of the fluorescence rate of a single molecule as a function of its distance to a laser-irradiated gold nanoparticle. The local field enhancement leads to an increased excitation rate whereas nonradiative energy transfer to the particle leads to a decrease of the quantum yield (quenching). Because of these competing effects, previous experiments showed either fluorescence enhancement or fluorescence quenching. By varying the distance between molecule and particle we show the first experimental measurement demonstrating the continuous transition from fluorescence enhancement to fluorescence quenching. This transition cannot be explained by treating the particle as a polarizable sphere in the dipole approximation.

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Metadata

Authors
Anger, P., Bharadwaj, P., & Novotny, L.
Venue
Physical Review Letters
Published
2006-03-21
Volume
96
Issue
11
Pages
113002-113002
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2023147957
Cited by
3,158
References
1
FWCI
66.79
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Enhancement and Quenching of Single-Molecule Fluorescence. https://app.cochat.ai/papers/10.1103/physrevlett.96.113002
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Anger, P., Bharadwaj, P., & Novotny, L. (2006). Enhancement and Quenching of Single-Molecule Fluorescence. Physical Review Letters. https://doi.org/10.1103/physrevlett.96.113002

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