Wide-band, time-resolved photoacoustic study of electron-transfer reactions: photoexcited magnesium porphyrin and quinones

1993 ◽  
Vol 97 (32) ◽  
pp. 8410-8413 ◽  
Author(s):  
Jehuda Feitelson ◽  
David C. Mauzerall
Keyword(s):  
Electron Transfer ◽  
Wide Band ◽  
Transfer Reactions ◽  
Time Resolved ◽  
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.

Time resolved CIDNP study of electron transfer reactions in proteins and model compounds

2002 ◽  
Vol 100 (8) ◽  
pp. 1187-1195 ◽  
Author(s):  
O. B. MOROZOVA ◽  
A. V. YURKOVSKAYA ◽  
Yu. P. TSENTALOVICH ◽  
M. D. E. FORBES ◽  
P. J. HORE ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Transfer Reactions ◽  
Model Compounds ◽  
Time Resolved ◽  
Electron Transfer Reactions

Intramolecular electron transfer reactions in meso-(4-nitrophenyl)-substituted subporphyrins

2016 ◽  
Vol 52 (7) ◽  
pp. 1424-1427 ◽  
Author(s):  
Graeme Copley ◽  
Juwon Oh ◽  
Kota Yoshida ◽  
Daiki Shimizu ◽  
Dongho Kim ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Absorption Spectroscopy ◽  
Charge Separation ◽  
Transient Absorption ◽  
Charge Recombination ◽  
Transient Absorption Spectroscopy ◽  
Transfer Reactions ◽  
Intramolecular Electron Transfer ◽  
Time Resolved ◽  
Electron Transfer Reactions

A2B-type meso-(4-nitrophenyl)-substituted subporphyrins have been synthesized and shown to undergo very fast photoinduced intramolecular charge separation (CS) and charge recombination (CR) between the subporphyrin core and the meso-4-nitrophenyl group in CH2Cl2 as probed by femtosecond time-resolved transient absorption spectroscopy.

Sign in / Sign up

Export Citation Format

Share Document