Circular Dichroism Spectroscopy of Photoreaction Centers

  • Ted Mar
  • Gabriel Gingras
Chapter
Part of the NATO ASI Series book series (NSSA, volume 149)

Abstract

Circular dichroism (CD) of photoreaction centers is very sensitive to the interactions felt by the bacteriochlorophyll (Bchl) and bacteriopheophytin (Bph) molecules. In the photoreaction center, these molecules may be involved in exciton interactions (1), in mixed charge transfer-and-exciton interactions (2), in interactions with higher energy transitions (3) and in interactions with the molecular polarizability of the protein (4). CD spectra of Bchl-protein antenna complexes and of the photoreaction center generally have been interpreted in terms of exciton interactions only (1, 5–11). However, since some of the other interactions (2, 12) may significantly contribute to the CD spectra, they may also be studied by CD spectroscopy. This particularly applies to the charge transfer and Bchl-protein interactions which may be important in the mechanism of the primary electron transfer reaction.

Keywords

Circular Dichroism Circular Dichroism Spectrum Circular Dichroism Spectroscopy Special Pair Charge Transfer State 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1988

Authors and Affiliations

  • Ted Mar
    • 1
  • Gabriel Gingras
    • 1
  1. 1.Département de biochimieUniversité de MontréalMontréalCanada

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