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"Femtosecond Charge Transfer Dynamics in Artificial Donor/Acceptor Systems: Switching from Adiabatic to Nonadiabatic Regimes by Small Structural Changes" T. Fiebig, K. Stock, S. Lochbrunner and E. Riedle Chem. Phys. Lett. 345, 81 - 88 (2001) Abstract: The dynamics of intramolecular charge transfer (CT) in a family of conjugated aromatic electron donor/acceptor (D/A) systems has been studied by femtosecond pump-probe spectroscopy. Although the compounds have very similar structures we observed vastly different CT dynamics, ranging from a few 100 fs to the nanosecond time range. These results show that specific modifications in the substitution scheme can lead to alterations of the relevant D/A orbitals and thus to drastic changes in the excited state electronic coupling. As a result the CT process switches from the ultrafast adiabatic to the slow nonadiabatic regime. BMO authors (in alphabetic order): Stefan Lochbrunner Eberhard Riedle Kai Stock Order Hardcopy  WWW-Version |
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Letzte Änderung: 2016-09-14 13:34
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