Solvent effects on back-electron transfer by the trans-stilbene-fumaronitrile ion pair

1986 ◽  
Vol 90 (19) ◽  
pp. 4664-4665 ◽  
Author(s):  
Orland W. Kolling
Keyword(s):  
Electron Transfer ◽  
Solvent Effects ◽  
Ion Pair ◽  
Trans Stilbene ◽  
Back Electron Transfer

Effects of Pressure on the Thermal Back Electron Transfer in a Dibenzylbipyridinium Salt. Solvent Reorganizations and Dynamic Solvent Effects

2004 ◽  
Vol 33 (12) ◽  
pp. 1542-1543 ◽  
Author(s):  
Mehdi S. Shihab ◽  
Koji Kubota ◽  
Toru Takahashi ◽  
Yasushi Ohga ◽  
Tsutomu Asano
Keyword(s):  
Electron Transfer ◽  
Solvent Effects ◽  
Back Electron Transfer

Electron transfer sensitized photolysis of 'onium salts

1988 ◽  
Vol 66 (2) ◽  
pp. 319-324 ◽  
Author(s):  
R. J. DeVoe ◽  
M. R. V. Sahyun ◽  
Einhard Schmidt ◽  
N. Serpone ◽  
D. K. Sharma
Keyword(s):  
Electron Transfer ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Laser Flash ◽  
Quantitative Model ◽  
Intersystem Crossing ◽  
Single Electron Transfer ◽  
Onium Salts ◽  
Encounter Complex ◽  
Back Electron Transfer

We have studied the anthracene-sensitized photolyses of both diphenyliodonium and triphenylsulphonium salts in solution using both steady-state and laser flash photolysis techniques. Photoproducts, namely, phenylated anthracenes along with iodobenzene or diphenylsulphide, respectively, are obtained from both salts with quantum efficiencies of ca. 0.1 at 375 nm. We infer the intermediacy of diphenyliodo and triphenylsulphur radicals formed by single electron transfer from the singlet-excited anthracene. We have developed a quantitative model of this chemistry, and identify the principal sources of inefficiency as back electron transfer, which occurs at nearly the theoretically limiting rate, intersystem crossing from the initially formed sensitizer–'onium salt encounter complex, and in-cage radical recombination.

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