Electron Spin Resonance Study of Molecular Orientation and Dynamics of Phenyl Imino and Nitronyl Nitroxide Radicals in Organic 1D Nanochannels of Tris(o-phenylenedioxy)cyclotriphosphazene

2018 ◽  
Vol 122 (25) ◽  
pp. 5493-5502 ◽  
Author(s):  
Hirokazu Kobayashi ◽  
Takanori Mori ◽  
Yuka Morinaga ◽  
Etsuko Fujimori ◽  
Kento Akiniwa ◽  
...  
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Molecular Orientation ◽  
Electron Spin Resonance Study ◽  
Nitronyl Nitroxide ◽  
Nitroxide Radicals ◽  
Spin Resonance ◽  
Spin Resonance Study

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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