Rates of Primary Electron Transfer Reactions in the Photosystem I Reaction Center Reconstituted with Different Quinones as the Secondary Acceptor

1994 ◽  
Vol 98 (43) ◽  
pp. 11220-11225 ◽  
Author(s):  
Shigeichi Kumazaki ◽  
Masayo Iwaki ◽  
Isamu Ikegami ◽  
Hideki Kandori ◽  
Keitaro Yoshihara ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Reaction Center ◽  
Photosystem I ◽  
Primary Electron ◽  
Transfer Reactions ◽  
Electron Transfer Reactions

Electron Transfer Reactions of Redox Cofactors in Spinach Photosystem I Reaction Center Protein in Lipid Films on Electrodes

2003 ◽  
Vol 125 (41) ◽  
pp. 12457-12463 ◽  
Author(s):  
Bernard Munge ◽  
Somes K. Das ◽  
Robielyn Ilagan ◽  
Zeus Pendon ◽  
Jing Yang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Reaction Center ◽  
Photosystem I ◽  
Transfer Reactions ◽  
Electron Transfer Reactions ◽  
Reaction Center Protein ◽  
Lipid Films

scholarly journals Independent initiation of primary electron transfer in the two branches of the photosystem I reaction center

2010 ◽  
Vol 107 (9) ◽  
pp. 4123-4128 ◽  
Author(s):  
M. G. Muller ◽  
C. Slavov ◽  
R. Luthra ◽  
K. E. Redding ◽  
A. R. Holzwarth
Keyword(s):  
Electron Transfer ◽  
Reaction Center ◽  
Photosystem I ◽  
Primary Electron

scholarly journals Mechanism of adiabatic primary electron transfer in photosystem I: Femtosecond spectroscopy upon excitation of reaction center in the far-red edge of the QY band

2017 ◽  
Vol 1858 (11) ◽  
pp. 895-905 ◽  
Author(s):  
Dmitry A. Cherepanov ◽  
Ivan V. Shelaev ◽  
Fedor E. Gostev ◽  
Mahir D. Mamedov ◽  
Anastasia A. Petrova ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Reaction Center ◽  
Photosystem I ◽  
Femtosecond Spectroscopy ◽  
Primary Electron ◽  
Red Edge

Transient states in photoinduced electron transfer reactions of porphyrin- and phthalocyanine-fullerene dyads

2009 ◽  
Vol 13 (10) ◽  
pp. 1090-1097 ◽  
Author(s):  
Helge Lemmetyinen ◽  
Nikolai Tkachenko ◽  
Alexander Efimov ◽  
Marja Niemi
Keyword(s):  
Electron Transfer ◽  
Charge Separation ◽  
Photoinduced Electron Transfer ◽  
Transient State ◽  
Primary Electron ◽  
Transfer Reactions ◽  
Acceptor Pair ◽  
Electron Transfer Reactions ◽  
Exciplex Formation ◽  
Donor And Acceptor

This paper combines the most important results on studies performed by the authors during the last decade on photoinduced electron transfer reactions of pheophytin-, phthalocyanine-, and porphyrin-fullerene dyads, in which donor and acceptor moieties are covalently linked to each other. Practically all studied molecules form an intramolecular exciplex as a transient state before the formation of the charge separation state or tight ion pair. When the center-to-center distance of the donor and acceptor pair is short (7–10 Å) both the exciplex formation and primary electron transfer are extremely fast with rate constants of 7–23 × 1012 s -1 and 40–1400 × 109 s -1, respectively. Rates become slower when the distance and orientational fluctuation increases. No systematic correlation between free energies and the rates of the formation and recombination of the exciplex and the charge separation state, respectively, were observed. The mechanism is discussed in frames of the Marcus electron transfer and the radiationless quantum transition theories.

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