Intermittent electron transfer activity from single CdSe/ZnS quantum dots.
Electron transfer activity from excited single CdSe/ZnS core/shell quantum dots (QDs) to adsorbed Fluorescein 27 was studied by single QD fluorescence spectroscopy. In comparison with QDs, the QD-acceptor complexes showed a shorter average and broader distribution of QD emission lifetimes due to electron transfer to adsorbates. Large fluctuation of lifetimes in single QD/dye complexes was observed, indicating intermittent electron transfer activity from QDs.
Issac
Abey
A
Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA.
Jin
Shengye
S
Lian
Tianquan
T