Fluorescence Quenching of Dye Molecules near Gold Nanoparticles: Radiative and Nonradiative Effects

E. Dulkeith, A. C. Morteani, T. Niedereichholz, T. A. Klar, J. Feldmann, S. A. Levi, F. C. J. M. van Veggel, D. N. Reinhoudt, M. Möller, and D. I. Gittins
Phys. Rev. Lett. 89, 203002 – Published 24 October 2002

Abstract

The radiative and nonradiative decay rates of lissamine dye molecules, chemically attached to differently sized gold nanoparticles, are investigated by means of time-resolved fluorescence experiments. A pronounced fluorescence quenching is observed already for the smallest nanoparticles of 1nm radius. The quenching is caused not only by an increased nonradiative rate but, equally important, by a drastic decrease in the dye’s radiative rate. Assuming resonant energy transfer to be responsible for the nonradiative decay channel, we compare our experimental findings with theoretical results derived from the Gersten-Nitzan model.

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  • Received 28 February 2002

DOI:https://doi.org/10.1103/PhysRevLett.89.203002

©2002 American Physical Society

Authors & Affiliations

E. Dulkeith, A. C. Morteani, T. Niedereichholz, T. A. Klar, and J. Feldmann

  • Photonics and Optoelectronics Group, Physics Department and CeNS, University of Munich, 80799 Munich, Germany

S. A. Levi, F. C. J. M. van Veggel, and D. N. Reinhoudt

  • Laboratories for Supramolecular Chemistry and Technology, University of Twente, 7500 AE Enschede, The Netherlands

M. Möller

  • Abteilung Organische Chemie III/Macromolekulare Chemie-OC III, Universität Ulm, 89069 Ulm, Germany

D. I. Gittins

  • Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany

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Issue

Vol. 89, Iss. 20 — 11 November 2002

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