scholarly journals Electron Spin Resonance Study on Photoinduced Changes of the Radicals Produced in Methyl Isocyanate Solid Irradiated with γ-Rays

1973 ◽  
Vol 46 (3) ◽  
pp. 701-706 ◽  
Author(s):  
Masato Fujiwara ◽  
Naoyuki Tamura ◽  
Hidefumi Hirai
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Electron Spin Resonance Study ◽  
Methyl Isocyanate ◽  
Spin Resonance ◽  
Γ Rays ◽  
Photoinduced Changes ◽  
Spin Resonance Study

Electron spin resonance study of the structure of some σ* disulfur radical cations

1988 ◽  
Vol 66 (12) ◽  
pp. 3050-3055 ◽  
Author(s):  
L. Bonazzola ◽  
J.P. Michaut ◽  
J. Roncin
Keyword(s):  
Electron Spin Resonance ◽  
Bond Length ◽  
Electron Spin ◽  
Esr Spectroscopy ◽  
Radical Cations ◽  
Electron Spin Resonance Study ◽  
Dilute Solutions ◽  
Spin Resonance ◽  
Γ Rays ◽  
Spin Resonance Study

The radical cations generated by exposure to 60Co γ rays, at 77 K. of dilute solutions of 1,4-dithiane, 1,5-dithiacyclooctane, and thiirane in freon matrices, have been investigated by ESR spectroscopy. The relation between the giso value and the S—S σ bond length is studied quantitatively.

Electron spin resonance study of trapped electrons in irradiated organic glasses at 4.2 °K

1970 ◽  
Vol 48 (3) ◽  
pp. 505-507 ◽  
Author(s):  
Hiroshi Yoshida ◽  
Takenobu Higashimura
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Molecular Orientation ◽  
Spectral Width ◽  
Electron Spin Resonance Study ◽  
Necessary Condition ◽  
Organic Glasses ◽  
Spin Resonance ◽  
Γ Rays ◽  
Spin Resonance Study

Electron spin resonance of electrons trapped in organic glasses, ethanol, 2-methyltetrahydrofuran, and 3-methylhexane were studied at the four different conditions (combination of irradiation with γ-rays and measurement at both 77 and 4.2 °K). It was evident that the spectral width, ΔHms, changes irreversibly when the glasses are warmed up to 77 °K after the irradiation at 4.2 °K: from 6.7, 5.6, and 4.5 to 14, 4.4, and 4.0 G for ethanol, 2-methyltetrahydrofuran, and 3-methylhexane, respectively. These observations strongly support Smith and Pieroni′s (4) suggestion that the molecular orientation is not a necessary condition for electrons to be trapped in the irradiated organic glasses.

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