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Proceedings Paper

Single molecule fluorescence spectroscopy studies of photo-induced charge transfer between CdSe/ZnS quantum dots and fullerene
Author(s): Zhihua Xu; Mircea Cotlet
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Paper Abstract

Photo-induced electron transfer in CdSe/ZnS semiconductor quantum dot-fullerene conjugates was investigated by single molecule fluorescence spectroscopy. The average rate for photoinduced electron transfer is estimated around 108s-1. Quenching by electron transfer is observed in the "on" state and it manifests both as reduced fluorescence intensity and as shortening in fluorescence lifetime. As a result, the electron transfer changes the on/off dynamics of the fluorescence intensity of individual quantum dots.

Paper Details

Date Published: 25 February 2010
PDF: 8 pages
Proc. SPIE 7571, Single Molecule Spectroscopy and Imaging III, 75710M (25 February 2010); doi: 10.1117/12.845922
Show Author Affiliations
Zhihua Xu, Brookhaven National Lab. (United States)
Mircea Cotlet, Brookhaven National Lab. (United States)

Published in SPIE Proceedings Vol. 7571:
Single Molecule Spectroscopy and Imaging III
Jörg Enderlein; Zygmunt Karol Gryczynski; Rainer Erdmann, Editor(s)

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