Fluorescence quenching of dye molecules near gold nanoparticles: radiative and nonradiative effects

Dulkeith, E. and Morteani, A.C. and Niedereichholz, T. and Klar, T.A. and Feldman, J. and Levi, S. and Veggel van, F.C.J.M. and Reinhoudt, D.N. and Möller, M. and Gittins, D.I. (2002) Fluorescence quenching of dye molecules near gold nanoparticles: radiative and nonradiative effects. Physical Review Letters, 89 (20). p. 203002. ISSN 0031-9007

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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 1 nm 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.
Item Type:	Article
Copyright:	© 2002 The American Physical Society
Research Group:	Supramolecular Chemistry and Technology (SMCT)
Link to this item:	http://purl.utwente.nl/publications/38093
Official URL:	http://dx.doi.org/10.1103/PhysRevLett.89.203002
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Metis ID: 208734