New Insights into the Mechanism of Triplet Radical-Pair Combinations. The Persistent Radical Effect Masks the Distinction between In-Cage and Out-of-Cage Processes

2007 ◽  
Vol 129 (16) ◽  
pp. 5012-5022 ◽  
Author(s):  
Carlos A. Chesta ◽  
Jyotirmayee Mohanty ◽  
Werner M. Nau ◽  
Urbashi Bhattacharjee ◽  
Richard G. Weiss
Keyword(s):  
Radical Pair ◽  
Triplet Radical Pair

Photochemistry of rhodamine dye salts involving intra-ion-pair electron transfer

2003 ◽  
Vol 81 (6) ◽  
pp. 789-798 ◽  
Author(s):  
Guilford Jones II ◽  
Xiaochun Wang ◽  
Jingqiu Hu
Keyword(s):  
Electron Transfer ◽  
Ethyl Acetate ◽  
Rhodamine 6G ◽  
Radical Pair ◽  
Ion Pairs ◽  
Ion Pair ◽  
Thiocyanate Ion ◽  
Rhodamine Dye ◽  
Triplet Radical Pair ◽  
Pair State

The electron-transfer photochemistry of rhodamine 6G thiocyanate ion pairs has been investigated. For dye in a low polarity solvent, such as ethyl acetate, the emission of rhodamine 6G is significantly quenched by thiocyanate counterions. Laser photolysis of rhodamine 6G and thiocyanate in ethyl acetate was studied in detail with the identification of the reduced rhodamine 6G radical species (λmax = 410 nm). The growth and decay of the R6G radical could be accounted for in part by a mechanism involving initial formation of dye triplet followed by electron transfer which provides a triplet radical-pair state on a µs timescale.Key words: electron transfer, ion pair, rhodamine 6G, triplet state.

ChemInform Abstract: A QUINTET-STATE TRIPLET-TRIPLET RADICAL PAIR

1980 ◽  
Vol 11 (43) ◽  
Author(s):  
H. MURAI ◽  
M. TORRES ◽  
O. P. STRAUSZ
Keyword(s):  
Radical Pair ◽  
Quintet State ◽  
Triplet Radical Pair

Selective excitation in pulsed EPR of a spin-correlated triplet-radical pair

2003 ◽  
Vol 162 (2) ◽  
pp. 423-428 ◽  
Author(s):  
L.V Kulik ◽  
I.V Borovykh ◽  
P Gast ◽  
S.A Dzuba
Keyword(s):  
Radical Pair ◽  
Selective Excitation ◽  
Pulsed Epr ◽  
Triplet Radical Pair

A quintet-state triplet-triplet radical pair

1980 ◽  
Vol 102 (15) ◽  
pp. 5104-5106 ◽  
Author(s):  
H. Murai ◽  
M. Torres ◽  
O. P. Strausz
Keyword(s):  
Radical Pair ◽  
Quintet State ◽  
Triplet Radical Pair

CIDNP Evidence for Divergent Behavior of Singlet and Triplet Radical Pair Encounters in the Photo-Claisen Rearrangement

1973 ◽  
Vol 12 (8) ◽  
pp. 662-663 ◽  
Author(s):  
Waldemar Adam ◽  
Hanns Fischer ◽  
Hans-J�rgen Hansen ◽  
Heinz Heimgartner ◽  
Hans Schmid ◽  
...  
Keyword(s):  
Claisen Rearrangement ◽  
Radical Pair ◽  
Divergent Behavior ◽  
Triplet Radical Pair
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