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Title: Fluorescence in nanostructured fulleride films
Author: Lobo, R.F.M.
Costa, M. S.
Ribeiro, J. H. F.
Sequeira, C. A. C.
Pereira, P.
Issue Date: Nov-2006
Publisher: American Institute of Physics
Abstract: Nanostructuring of fullerene C60 beam deposited films is achieved by electrochemical reduction in a potassium hydroxide aqueous solution. Alkali fulleride clusters are formed at the electrode, as it is illustrated by cyclic voltammetry, x-ray diffraction, and scanning tunneling microscopy. Fluorescence emission from fluorophore doped fullerene reduced films was investigated by fluorescence spectroscopy and scanning near-field optical microscopy. These techniques lead to results which also fit such nanometer-sized fulleride cluster interpretation. In particular, the fluorophore fluorescence lifetime decreases as long as aggregation in the film is more effective,which occurs with the increase of film thickness.
Description: Applied Physics Letters, 89
ISSN: 0003-6951
Appears in Collections:FCT: DF - Artigos em revista internacional com arbitragem científica

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