Magnetic field effect on picosecond electron transfer
The recombination dynamics of a transition metal redox system monitored by femtosecond pump-probe spectroscopy are shown to be sensitive to high magnetic fields at times shorter than 10 picoseconds. The effect, based on coherent population beats of different spin states, is quantitatively accounted for and allows direct access to spin relaxation rates far beyond the time resolution of the fastest electron paramagnetic resonance technique. The presence of this ultrafast magnetic field effect helps in understanding complex reaction schemes in transition metal chemistry, which occur in a wide range of fields, such as bioinorganic chemistry and catalysis.
P. Gilch, F. Pollinger-Dammer, C. Musewald, M. E. Michel-Beyerle, Institut fur Physikalische und Theoretische Chemie, Technische Universitat Munchen, D-85748 Garching, Germany. U. E. Steiner, Fakultat fur Chemie, Universitat Konstanz,
P
Gilch
F
Pollinger-Dammer
C
Musewald
ME
Michel-Beyerle
UE
Steiner