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Experimental verification of the through-bond mechanism of electron transfer in bridged donor-acceptor complexes

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons95446

Staab,  Heinz A.
Department of Organic Chemistry, Max Planck Institute for Medical Research, Max Planck Society;

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Citation

Pullen, S. H., Edington, M. D., Studer-Martinez, S. L., Simon, J. D., & Staab, H. A. (1999). Experimental verification of the through-bond mechanism of electron transfer in bridged donor-acceptor complexes. The Journal of Physical Chemistry A, 103(15), 2740-2743. doi:10.1021/jp984761o.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0024-AC59-9
Abstract
Two rigid bischromophoric systems featuring identical donor and acceptor moieties have been studied in order to directly determine the relative importance of through−space and through−bond mechanisms for electron−transfer reactions. The two molecular systems studied have the unique feature that the through−bond distance between any pair of atoms in the two molecules is held constant while the spatial distance between the donor and acceptor is changed. Time−resolved laser measurements reveal that back−electron−transfer dynamics following photoexcitation of the ground−state charge−transfer absorption band are the same in the two systems. The results provide direct evidence for the through−bond mechanism of electron transfer in bridged organic donor−acceptor systems