Transient solutions of potential steps at the rotating disc electrode with steady state initial concentration profiles for one electron transfer reactions

2011 ◽  
Vol 56 (19) ◽  
pp. 6812-6823 ◽  
Author(s):  
Sönke Schmachtel ◽  
Kyösti Kontturi
Keyword(s):  
Electron Transfer ◽  
Steady State ◽  
Transfer Reactions ◽  
Concentration Profiles ◽  
Rotating Disc Electrode ◽  
Disc Electrode ◽  
Rotating Disc ◽  
Electron Transfer Reactions ◽  
Initial Concentration ◽  
Transient Solutions

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