Electron transfer complexes of the system pyrene/PMDA studied by transient absorption and degenerate four-wave mixing measurements

M. Assel, T. Höfer, A. Laubereau, W. Kaiser

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The kinetics of the intermolecular electron transfer between pyrene and pyromelitic dianhydride is studied by two experimental techniques: transient absorption measurements and degenerate four-wave mixing after optical excitation by picosecond light pulses. The observed time evolution of the electron transfer reaction depends strongly on the wavelength of the pump pulse. Excitation of pyrene leads to a diffusion-controlled electron transfer (in agreement with theoretical calculations), while excitation of the ground state donor - acceptor complex shows a different time behavior. Comparison of the decay times and the molecular hyperpolarizabilities provides clear evidence for two different excited charge transfer complexes.

Original languageEnglish
Pages (from-to)11836-11842
Number of pages7
JournalJournal of Physical Chemistry
Volume100
Issue number29
DOIs
StatePublished - 18 Jul 1996

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