The study of excitation transfer between light-harvesting antenna and reaction center in chromatophores from purple bacterium Rhodospirillum rubrum by selective picosecond spectroscopy

The primary photophysical processes of photosynthesis are usually subdivided into: (i) Delivery of excitation from light-harvesting antenna pigments to reaction centers (RCs); (ii) Conversion of excitation in RC into separated charges. This work reports the first picosecond absorption data on: (i) Transfer and disappearance of excitations from light-harvesting antenna; (ii) Subsequent appearance of RC oxidation in the native chromatophores.