Time-resolved spectroscopy of the excited electronic state of reaction centers of Rhodopseudomonas viridis

The spectral properties of the excited electronic state of the
reaction centers of Rhodopseudomonas (Rps.) viridis are studied by
dichroic transient absorption spectroscopy with sub-picosecond time
resolution. The theoretical analysis of the experimental results
allows the assignment of the transient absorption from two dimer
bands of the special pair and show its excitonic coupling to other
pigments.