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Title: Calculation of the electron affinities of the chromophores involved in photosynthesis

Abstract

We examine the electron affinities (EA) of the postulated electron acceptor chromophores of the photosynthetic reaction center in R. Viridis. We estimate a difference of EA`s between bacteriochlorophyll-b and bacteriopheophytin-b of 0.19eV, in excellent agreement with the experimental value reported at 0.20 eV. We estimate this difference in situ at 0.42 eV, compared to an experimental estimate of 0.34 eV. These results support those of Thompson and Zerner that in the absence of specific interactions between BChl-L-side and the environment, electron transfer to BChl-L-side might not be directly involved in the overall electron transfer process. 42 refs., 2 figs., 3 tabs.

Authors:
;  [1]
  1. Univ. of Florida, Gainesville, FL (United States)
Publication Date:
OSTI Identifier:
249679
Resource Type:
Journal Article
Journal Name:
Journal of the American Chemical Society
Additional Journal Information:
Journal Volume: 118; Journal Issue: 17; Other Information: PBD: 1 May 1996
Country of Publication:
United States
Language:
English
Subject:
55 BIOLOGY AND MEDICINE, BASIC STUDIES; 40 CHEMISTRY; 66 PHYSICS; PROTEINS; AFFINITY; THEORETICAL DATA; CALCULATION METHODS; PHOTOSYNTHESIS; PHOTOSYNTHETIC REACTION CENTERS; CHLOROPHYLL; BACTERIA; ELECTRON TRANSFER

Citation Formats

Cory, M G, and Zerner, M C. Calculation of the electron affinities of the chromophores involved in photosynthesis. United States: N. p., 1996. Web. doi:10.1021/ja952089s.
Cory, M G, & Zerner, M C. Calculation of the electron affinities of the chromophores involved in photosynthesis. United States. https://doi.org/10.1021/ja952089s
Cory, M G, and Zerner, M C. 1996. "Calculation of the electron affinities of the chromophores involved in photosynthesis". United States. https://doi.org/10.1021/ja952089s.
@article{osti_249679,
title = {Calculation of the electron affinities of the chromophores involved in photosynthesis},
author = {Cory, M G and Zerner, M C},
abstractNote = {We examine the electron affinities (EA) of the postulated electron acceptor chromophores of the photosynthetic reaction center in R. Viridis. We estimate a difference of EA`s between bacteriochlorophyll-b and bacteriopheophytin-b of 0.19eV, in excellent agreement with the experimental value reported at 0.20 eV. We estimate this difference in situ at 0.42 eV, compared to an experimental estimate of 0.34 eV. These results support those of Thompson and Zerner that in the absence of specific interactions between BChl-L-side and the environment, electron transfer to BChl-L-side might not be directly involved in the overall electron transfer process. 42 refs., 2 figs., 3 tabs.},
doi = {10.1021/ja952089s},
url = {https://www.osti.gov/biblio/249679}, journal = {Journal of the American Chemical Society},
number = 17,
volume = 118,
place = {United States},
year = {Wed May 01 00:00:00 EDT 1996},
month = {Wed May 01 00:00:00 EDT 1996}
}