Digitale Medien
College Park, Md.
:
American Institute of Physics (AIP)
The Journal of Chemical Physics
103 (1995), S. 1292-1296
ISSN:
1089-7690
Quelle:
AIP Digital Archive
Thema:
Physik
,
Chemie und Pharmazie
Notizen:
We present results of a strong laser field interacting with a two-center system. The two centers consist of a donor and acceptor pair which are coupled by F@xfrster–Dexter resonance energy transfer. The donor molecule is the indole chromophore in indolylethylenediaminetetraacetic acid (indolyl-EDTA) which chelates the lanthanide ion acceptor holmium (Ho3+). The changes in the donor lifetime consequent upon excitation of the acceptor were examined. Excitation of the lanthanide acceptor with a second laser field resulted in the appearance of a substantially increased lifetime component. This additional (new) lifetime component is on the order of a second, compared with the original nanosecond lifetime of the donor in its complex with the acceptor. This new component is not attributable to the spontaneous lifetime of the acceptor. Rather, we propose that the large lifetime is due to the interaction of the donor with the excited state acceptor. © 1995 American Institute of Physics.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.469805
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