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Title: Femtosecond spectroscopy of bacterial photosynthesis{emdash}towards an understanding of the most important energy conversion process on earth

Abstract

Reaction centers of bacterial photosynthesis are ideal systems to study photosynthetic energy conversion. Femtosecond spectroscopy has delivered extensive information on the molecular mechanisms of the primary electron transfer. The data show, that primary electron transfer is an ultrafast stepwise reaction, where the electron is transferred via closely spaced pigments with reaction times as fast as 0.9 ps and 3.5 ps. Experiments on mutated and modified reaction centers allow to determine the energetics of the various intermediates in the reaction center. Recently, femtosecond experiments with light pulses in the mid infrared have shown, that an additional fast process occurs on the 200 fs timescale in the initially excited special pair. Only afterwards the well established electron transfer reactions take place. This fast process may be of importance for the optimization of the primary reaction. {copyright} {ital 1996 American Institute of Physics.}

Authors:
; ; ;  [1]
  1. Ludwig Maximilians Universitaet Muenchen, Institut fuer Medizinische Optik, Barbarastr.1 6, 80797 Muenchen (Germany)
Publication Date:
OSTI Identifier:
286486
Report Number(s):
CONF-950617-
Journal ID: APCPCS; ISSN 0094-243X; TRN: 9615M0060
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 364; Journal Issue: 1; Conference: Joint meeting on femtochemistry studies: fast elementary processes in chemical and biological systems, Villeneuve d`Ascq (France), 26 Jun - 1 Jul 1995; Other Information: PBD: Apr 1996
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; 14 SOLAR ENERGY; PHOTOSYNTHETIC REACTION CENTERS; ENERGY CONVERSION; ELECTRON TRANSFER; PHOTOSYNTHESIS; BACTERIA; VISIBLE SPECTRA; INFRARED SPECTRA; ABSORPTION SPECTROSCOPY; INTERNAL CONVERSION; LASER SPECTROSCOPY

Citation Formats

Zinth, W, Hamm, P, Arlt, T, and Wachtveitl, J. Femtosecond spectroscopy of bacterial photosynthesis{emdash}towards an understanding of the most important energy conversion process on earth. United States: N. p., 1996. Web. doi:10.1063/1.50198.
Zinth, W, Hamm, P, Arlt, T, & Wachtveitl, J. Femtosecond spectroscopy of bacterial photosynthesis{emdash}towards an understanding of the most important energy conversion process on earth. United States. https://doi.org/10.1063/1.50198
Zinth, W, Hamm, P, Arlt, T, and Wachtveitl, J. 1996. "Femtosecond spectroscopy of bacterial photosynthesis{emdash}towards an understanding of the most important energy conversion process on earth". United States. https://doi.org/10.1063/1.50198.
@article{osti_286486,
title = {Femtosecond spectroscopy of bacterial photosynthesis{emdash}towards an understanding of the most important energy conversion process on earth},
author = {Zinth, W and Hamm, P and Arlt, T and Wachtveitl, J},
abstractNote = {Reaction centers of bacterial photosynthesis are ideal systems to study photosynthetic energy conversion. Femtosecond spectroscopy has delivered extensive information on the molecular mechanisms of the primary electron transfer. The data show, that primary electron transfer is an ultrafast stepwise reaction, where the electron is transferred via closely spaced pigments with reaction times as fast as 0.9 ps and 3.5 ps. Experiments on mutated and modified reaction centers allow to determine the energetics of the various intermediates in the reaction center. Recently, femtosecond experiments with light pulses in the mid infrared have shown, that an additional fast process occurs on the 200 fs timescale in the initially excited special pair. Only afterwards the well established electron transfer reactions take place. This fast process may be of importance for the optimization of the primary reaction. {copyright} {ital 1996 American Institute of Physics.}},
doi = {10.1063/1.50198},
url = {https://www.osti.gov/biblio/286486}, journal = {AIP Conference Proceedings},
number = 1,
volume = 364,
place = {United States},
year = {Mon Apr 01 00:00:00 EST 1996},
month = {Mon Apr 01 00:00:00 EST 1996}
}