A thermoluminescence study of Photosystem II back electron transfer reactions in rice leaves – effects of salt stress

2005 ◽  
Vol 84 (1-3) ◽  
pp. 131-137 ◽  
Author(s):  
Jorge L. Zurita ◽  
Mercedes Roncel ◽  
Manuel Aguilar ◽  
José M. Ortega
Keyword(s):  
Electron Transfer ◽  
Salt Stress ◽  
Photosystem Ii ◽  
Transfer Reactions ◽  
Electron Transfer Reactions ◽  
Thermoluminescence Study ◽  
Back Electron Transfer ◽  
Rice Leaves

Electron-transfer reactions in manganese-depleted photosystem II

Biochemistry ◽  
1990 ◽  
Vol 29 (38) ◽  
pp. 8977-8985 ◽  
Author(s):  
Carolyn A. Buser ◽  
Lynmarie K. Thompson ◽  
Bruce A. Diner ◽  
Gary W. Brudvig
Keyword(s):  
Electron Transfer ◽  
Photosystem Ii ◽  
Transfer Reactions ◽  
Electron Transfer Reactions

Fluorescence quenching of 9-cyanoanthracene by metallo-octaethylporphyrins in cyanobenzene

2015 ◽  
Vol 19 (09) ◽  
pp. 1063-1071 ◽  
Author(s):  
Mihir Ghosh ◽  
Biswajit Roy ◽  
Koushik Majhi ◽  
Aruna K. Mora ◽  
Sukhendu Nath ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Steady State ◽  
Energy Transfer Process ◽  
Transfer Reactions ◽  
Simultaneous Occurrence ◽  
Gibbs Free Energy Change ◽  
Time Resolved ◽  
Electron Transfer Reactions ◽  
Back Electron Transfer ◽  
Marcus Inverted Region

Investigations are carried out on the nature of photoinduced electron transfer reactions within some metallo-octaethylporphyrin (zinc octaethylporphyrin and magnesium octaethylporphyrin) donors and acceptor 9-cyanoanthracene in cyanobenzene at 300 K by steady state and time-resolved spectroscopic methods. Acceptor is selectively excited at 366 nm and 374 nm for steady state and time-resolved measurements, respectively, where donor metalloporphyrins possess negligible absorbance. Evidence is found for simultaneous occurrence of Förster's type singlet–singlet energy transfer process along with electron transfer. High exergonic values of Gibbs free energy change for both forward and back electron transfer reactions indicate the possibility of occurrences of these two consecutive processes in the Marcus inverted region.

Sign in / Sign up

Export Citation Format

Share Document