Random-Orientation High-Spin Electron Spin Resonance Spectroscopy and Comprehensive Spectral Analyses of the Quintet Dicarbene and Dinitrene withmeta-Topological Linkers: Origins of Peculiar Line-Broadening in Fine-Structure ESR Spectra in Organic Rigid Glasses

2009 ◽  
Vol 113 (34) ◽  
pp. 9521-9526 ◽  
Author(s):  
Teruaki Koto ◽  
Kazunobu Sato ◽  
Daisuke Shiomi ◽  
Kazuo Toyota ◽  
Koichi Itoh ◽  
...  
Keyword(s):  
Fine Structure ◽  
Electron Spin Resonance ◽  
High Spin ◽  
Electron Spin ◽  
Esr Spectra ◽  
Electron Spin Resonance Spectroscopy ◽  
Resonance Spectroscopy ◽  
Line Broadening ◽  
Random Orientation ◽  
Spin Resonance

Electron Spin Resonance Spectra of Azine – Alkali Metal Triple Ions in Ethereal Solvents

1971 ◽  
Vol 49 (12) ◽  
pp. 2059-2063 ◽  
Author(s):  
S. A. Al-Baldawi ◽  
T. E. Gough
Keyword(s):  
Electron Spin Resonance ◽  
Alkali Metal ◽  
Electron Spin ◽  
Hyperfine Splitting ◽  
Alkali Metals ◽  
Electron Spin Resonance Spectroscopy ◽  
Resonance Spectroscopy ◽  
Line Broadening ◽  
Spin Resonance ◽  
Triple Ions

Electron spin resonance spectroscopy has been used to study triple ions formed between pyrazine and tetramethylpyrazine and the cations Li+, Na+, K+ in dimethoxyethane, tetrahydrofuran, and 2-methyl-tetrahydrofuran. Differential line-broadening effects are reported within the hyperfine splitting patterns of the alkali metals incorporated into the triple ions, and a possible application of such effects to the study of ionic association is described.

Is superoxide demonstration by electron-spin resonance spectroscopy really superoxide?

1988 ◽  
Vol 255 (1) ◽  
pp. H213-H215 ◽  
Author(s):  
H. Nakazawa ◽  
K. Ichimori ◽  
Y. Shinozaki ◽  
H. Okino ◽  
S. Hori
Keyword(s):  
Free Radicals ◽  
Electron Spin Resonance ◽  
Electron Spin ◽  
Coenzyme Q10 ◽  
Ischemia Reperfusion ◽  
Esr Spectra ◽  
Oxygen Radical ◽  
Electron Spin Resonance Spectroscopy ◽  
Resonance Spectroscopy ◽  
Spin Resonance

A recent study has indicated that the generation of an oxygen radical in freeze-clamped myocardium on reperfusion can be directly demonstrated using electron-spin resonance spectroscopy (ESR). However, the results need to be analyzed with caution, since artifactual radicals are misleading problems common to this method. To test whether that reported superoxide is truly the biologically existing radical or an artifactual radical, we performed experiments using isolated, perfused rat and rabbit hearts and open-chest canine hearts subjected to ischemia/reperfusion. Radicals were freeze trapped at 77 degrees K, and ESR measurements were made. The ESR spectra exhibited four free radicals. Among these, two radicals which had been previously claimed as superoxide and a nitrogen-centered radical were shown as mechanically yielded artifactual radicals. These were produced by pulverization of the frozen sample. In artifact-free samples, superoxide could not be detected. The radicals native to the myocardium were identified as coenzyme Q10-. and another radical the species of which remains unclear.

Identification of irradiated rice noodles by electron spin resonance spectroscopy

2012 ◽  
Vol 47 (8) ◽  
pp. 640-643 ◽  
Author(s):  
Wanwisa Sudprasert ◽  
Sahakan Monthonwattana ◽  
Arag Vitittheeranon
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Electron Spin Resonance Spectroscopy ◽  
Resonance Spectroscopy ◽  
Spin Resonance
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