Simultaneous electrochemical-electron spin resonance measurements. III. Determination of rate constants for second-order radical anion dimerization

1974 ◽  
Vol 78 (3) ◽  
pp. 295-299 ◽  
Author(s):  
Ira B. Goldberg ◽  
Duane Boyd ◽  
Ryo Hirasawa ◽  
Allen J. Bard
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Rate Constants ◽  
Radical Anion ◽  
Second Order ◽  
Spin Resonance

Electron spin resonance detection of heterogeneous reactions of Pigment Red 122

1990 ◽  
Vol 68 (4) ◽  
pp. 640-643
Author(s):  
Mary Jane Walzak ◽  
John R. Harbour
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Radical Anion ◽  
Heterogeneous Reactions ◽  
Resonance Spectroscopy ◽  
G Factor ◽  
Spin Resonance ◽  
Two Component ◽  
Induced Signal ◽  
Resonance Detection

Electron spin resonance spectroscopy (ESR) has been used to investigate the electrochemical and photolytic behaviour of particulate C.I. Pigment Red 122. Heterogeneous electrochemical reduction and oxidation of the pigment resulted in different reversible ESR signals with the radical cation giving a signal of ΔHpp = 2.3 G and g-factor of 2.0033 and the radical anion giving ΔHpp = 3.2 G and g-factor 2.0039. On exposure to light the inherent ESR signal, which was determined to be a two-component signal, increased in intensity by a factor of 2.4 but did not change in linewidth or g-factor. This light-induced signal was reversible and decayed to initial levels in the dark. The mechanism of these reactions is discussed. Keywords: ESR, pigment, electrochemistry, photo effects.

Electron-spin-resonance determination of the internal field within the superconductorYBa2Cu3O7

1990 ◽  
Vol 41 (4) ◽  
pp. 2046-2048 ◽  
Author(s):  
Horacio A. Farach ◽  
Eduardo Quagliata ◽  
Taha Mzoughi ◽  
Manuel A. Mesa ◽  
Charles P. Poole ◽  
...  
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Internal Field ◽  
Spin Resonance
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