Femtosecond processes and ultrafast biological electron transfer

In this paper, we report the calculated femtosecond transient spectra of the primary electron transfer in the bacterial reaction center of Rhodobacter sphaeroides R26. The excitation dependence of the time-resolved spectra is simulated. The effects of vibrational coherence on the time-resolved spectra are discussed. The electron transfer accompanying vibrational relaxation is theoretically investigated using the single-vibronic level electron transfer rate constants. The effects of multi-modes and temperature on the electron transfer rate constants are also reported