Abstract
The photophysical and electron transfer properties of bacteriochlorophylls (Bchl) and bacteriopheophytins (Bpheo) found in the reaction centers of photosynthetic bacteria have been directly associated with the mechanism of charge separation which underlies photosynthesis [1], The appearance of the Bpheo anion (Bpheo−) within 3–5 ps after excitation of the special pair of Bchl (P) is well documented from transient absorption spectroscopy [2–4]. The ≈200 ps lifetime of Bpheo− which is primarily determined by the electron transfer process to a quinone also has been established by picosecond changes in absorption [5,6]. Thus, the general kinetic time scale for the primary processes in bacterial photosynthesis has been determined by the transient differences in electronic state properties.
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Atkinson, G.H., Hayashi, H., Tasumi, M., Kolaczkowski, S. (1990). Picosecond Resonance Raman Spectroscopy of Rhodobacter sphaeroides Reaction Centers. In: Michel-Beyerle, ME. (eds) Reaction Centers of Photosynthetic Bacteria. Springer Series in Biophysics, vol 6. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-61297-8_14
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DOI: https://doi.org/10.1007/978-3-642-61297-8_14
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