Bell-shaped energy gap dependence of backward electron-transfer rate of Geminate radical pairs produced by electron-transfer quenching of ruthenium(II) complexes by aromatic amines

1986 ◽  
Vol 90 (15) ◽  
pp. 3295-3297 ◽  
Author(s):  
Takeshi Ohno ◽  
Akio Yoshimura ◽  
Noboru Mataga
Keyword(s):  
Electron Transfer ◽  
Aromatic Amines ◽  
Transfer Rate ◽  
Energy Gap ◽  
Electron Transfer Rate ◽  
Radical Pairs

Non-Condon Theory for the Energy Gap Dependence of Electron Transfer Rate

2007 ◽  
pp. 293-297
Author(s):  
Hirotaka Nishioka ◽  
Akihiro Kimura ◽  
Takahisa Yamato ◽  
Toshiaki Kakitani
Keyword(s):  
Electron Transfer ◽  
Transfer Rate ◽  
Energy Gap ◽  
Electron Transfer Rate

Interference, Fluctuation, and Alternation of Electron Tunneling in Protein Media. 2. Non-Condon Theory for the Energy Gap Dependence of Electron Transfer Rate

2005 ◽  
Vol 109 (32) ◽  
pp. 15621-15635 ◽  
Author(s):  
Hirotaka Nishioka ◽  
Akihiro Kimura ◽  
Takahisa Yamato ◽  
Tsutomu Kawatsu ◽  
Toshiaki Kakitani
Keyword(s):  
Electron Transfer ◽  
Transfer Rate ◽  
Energy Gap ◽  
Electron Tunneling ◽  
Electron Transfer Rate

Internal return in the photochemistry of ring-substituted 1-(1-naphthyl)ethyl esters of phenylacetic acid

1995 ◽  
Vol 73 (6) ◽  
pp. 885-895 ◽  
Author(s):  
J.M. Kim ◽  
J.A. Pincock
Keyword(s):  
Electron Transfer ◽  
Transfer Rate ◽  
Experimental Error ◽  
Phenylacetic Acid ◽  
Radical Pair ◽  
Ion Pair ◽  
Ethyl Esters ◽  
Electron Transfer Rate ◽  
Radical Pairs ◽  
Substituted 1

The photochemistry in methanol of the esters 12a–d has been studied in order to determine the importance of internal return of both ion pair and radical pair intermediates. The efficiency of internal return, determined by monitoring 18O exchange between the alcohol and carbonyl oxygens, was shown to be substituent dependent, varying from approximately 10% for the 4,7-dimethoxy substrate to nearly 50% for the 4-cyano case. The corresponding ground state solvolysis reactions gave about 10% internal return and, within experimental error, were substituent independent. Internal return was also examined by racemization of the chiral center in 12a and 12d. In summary, these combined results reveal that internal return probably occurs mainly through a contact (not solvent-separated) radical pair. More important, internal return has little effect on previously calculated electron transfer rate constants for converting the radical pair to the ion pair. Therefore, the previously reported Marcus' correlations are valid. Keywords: photochemistry of benzylic esters, internal return, photosolvolysis, electron transfer, radical pairs.

Shapes of the electron-transfer rate vs energy gap relations in polar solutions

1989 ◽  
Vol 93 (26) ◽  
pp. 8316-8323 ◽  
Author(s):  
Akira Yoshimori ◽  
Toshiaki Kakitani ◽  
Yoshitaka Enomoto ◽  
Noboru Mataga
Keyword(s):  
Electron Transfer ◽  
Transfer Rate ◽  
Energy Gap ◽  
Electron Transfer Rate ◽  
Polar Solutions
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