Lifetimes of heavy-Rydberg ion-pair states formed through Rydberg electron transfer

2010 ◽  
Vol 133 (6) ◽  
pp. 064301 ◽  
Author(s):  
M. Cannon ◽  
C. H. Wang ◽  
F. B. Dunning ◽  
C. O. Reinhold
Keyword(s):  
Electron Transfer ◽  
Ion Pair ◽  
Rydberg Electron

Micellar Effects on the Electron Transfer Reaction within the Ion Pair [(NH3)5Co(N-cyanopiperidine)]3+/[Fe(CN)6]4-

1996 ◽  
Vol 100 (42) ◽  
pp. 16978-16983 ◽  
Author(s):  
Amalia Rodríguez ◽  
María del Mar Graciani ◽  
Robert Balahura ◽  
María Luisa Moyá
Keyword(s):  
Electron Transfer ◽  
Transfer Reaction ◽  
Electron Transfer Reaction ◽  
Ion Pair ◽  
Micellar Effects

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.

Elektronentransfer und Ionenpaar-Bildung, 47 [1] Titrationen von 1,2,4,5-Tetracyanbenzol und 7,7,8,8-Tetracyan-p-chinodimethan mit Natriummetall in aprotischen Lösungen / Electron Transfer and Ion Pair Formation, 47 [ 1 ] Titrations of 1,2,4,5-Tetracyanobenzene and 7,7,8,8-Tetracyano-p-quinodimethane with Sodium Metal in Aprotic Solutions

1996 ◽  
Vol 51 (9) ◽  
pp. 1215-1221 ◽  
Author(s):  
Hans Bock ◽  
Markus Kleine
Keyword(s):  
Electron Transfer ◽  
Ion Pair ◽  
Pair Formation ◽  
Transfer Reactions ◽  
The Novel ◽  
Band Shape ◽  
Novel Technique ◽  
Sodium Metal ◽  
Mndo Calculations ◽  
Donor Acceptor

In an especially designed and sealed glass apparatus, a combination of UV/VIS and ESR spectroscopy measurements are performed to follow electron transfer reactions in aprotic (cH⊕ < 0,1 ppm) solution. For the sodium metal reductions of the tetracyano-substituted title compounds, the novel technique provides the following detailed information: 1,2,4,5- tetracyanobenzene is uniformly reduced to its radical anion, for which additional geometryoptimized MNDO calculations predict an already significant cyanine disortion. For 7,7,8,8- tetracyano-p-quinodimethane, UV/VIS band shape analysis allows to detect in the saturated THF reduction solution the 16300 cm-1 absorption of the donor/acceptor complex formed in the equilibrium TCNQ·⊖ + TCNQ ⇆ {TCNQ·⊖···TCNQ}, which according to a literature search has been crystallized and structurally characterized in paramagnetic salts such as [Me2⊕ (TCNQ·⊖)2(TCNQ)].

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