Photochemical Hole-burning in Photosynthetic Reaction Centers
نویسندگان
چکیده
The change in absorbance (hole spectrum) of the primary electron donor (P870) in bacterial photosynthetic reaction centers has been studied at 1.5-2.1 K following narrow-band excitation at several wavelengths within the P870 absorption band. The hole width is very large, suggesting a homogeneous linewidth on the order of 200-300 cm-‘. Possible interpretations of this highly unusual result, including ultra-fast excited-state decay, are discussed.
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