Charge separation and energy transfer in the photosystem II core complex studied by femtosecond midinfrared spectroscopy.

@article{Pawlowicz2007ChargeSA,
  title={Charge separation and energy transfer in the photosystem II core complex studied by femtosecond midinfrared spectroscopy.},
  author={Natalia P Pawlowicz and M. B. E. Lee-de Groot and Ivo H M Stokkum and Jacques Breton and Rienk van Grondelle},
  journal={Biophysical journal},
  year={2007},
  volume={93 8},
  pages={2732-42}
}
The core of photosystem II (PSII) of green plants contains the reaction center (RC) proteins D1D2-cytb559 and two core antennas CP43 and CP47. We have used time-resolved visible pump/midinfrared probe spectroscopy in the region between 1600 and 1800 cm(-1) to study the energy transfer and charge separation events within PSII cores. The absorption difference spectra in the region of the keto and ester chlorophyll modes show spectral evolution with time constants of 3 ps, 27 ps, 200 ps, and 2 ns… CONTINUE READING