"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)
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):