A spin-trap ESR study of the regrouping of radicals with 1,3 or 1,5 hydrogen migration

1977 ◽  
Vol 26 (3) ◽  
pp. 489-493 ◽  
Author(s):  
R. G. Gasanov ◽  
A. B. Terent'ev ◽  
R. Kh. Freidlina
Keyword(s):  
Spin Trap ◽  
Hydrogen Migration

Characterization of the Hydrogen Migration in a VT1-0 Titanium Alloy by Thermo-EMF and Eddy Current Nondestructive Control Methods

2020 ◽  
Vol 2020 (11) ◽  
pp. 1276-1282
Author(s):  
Syui Shupen ◽  
V. V. Larionov ◽  
V. N. Kudiyarov ◽  
R. R. Elman ◽  
A. M. Lider
Keyword(s):  
Titanium Alloy ◽  
Eddy Current ◽  
Control Methods ◽  
Nondestructive Control ◽  
Hydrogen Migration

Radical Intermediates in Photochemical and Redox Initiated Decomposition of Thioazo Compounds(an EPR and Cyclovoltammetric Study)

1997 ◽  
Vol 62 (6) ◽  
pp. 855-865 ◽  
Author(s):  
Katarína Erentová ◽  
Vladimír Adamčík ◽  
Andrej Staško ◽  
Oskar Nuyken ◽  
Arming Lang ◽  
...  
Keyword(s):  
Decomposition Rate ◽  
Half Life ◽  
Spin Trap ◽  
Solvent Molecule ◽  
Life Time ◽  
Radical Intermediates ◽  
Reactive Radicals ◽  
Induced Decomposition

The cathodically and photochemically induced decomposition of thioazo compounds XC6H4-N2-S-C6H4CH3 and their polymers with X = NO2, COOH, and SO3H were investigated. The formation of carbon-centered XC6H4. and sulfur-centered .S-C6H4Y radicals was confirmed using spin-trap technique. These reactive radicals either abstract hydrogen from CH3CN solvent molecule forming .CH2CN radical or they recombine to cage products XC6H4-S-C6H4CH3 eliminating N2. The decomposition rate of the investigated thioazo compounds is characterized by a formal half-life time of 5 to 10 s.

Mechanism of singlet oxygen interaction with spin trap α-phenyl-N-tert-butylnitrone

1984 ◽  
Vol 26 (4) ◽  
pp. 269-274 ◽  
Author(s):  
Alexander P. Darmanyan ◽  
Galina Móger
Keyword(s):  
Singlet Oxygen ◽  
Spin Trap ◽  
Oxygen Interaction

ChemInform Abstract: Measurement of the Absolute Rate of 1,2-Hydrogen Migration in Benzylchlorocarbene

ChemInform ◽  
1989 ◽  
Vol 20 (47) ◽  
Author(s):  
J. E. JACKSON ◽  
N. SOUNDARARAJAN ◽  
W. WHITE ◽  
M. T. H. LIU ◽  
R. BONNEAU ◽  
...  
Keyword(s):  
Absolute Rate ◽  
Hydrogen Migration ◽  
The Absolute

Irradiated nifedipine—a nitroso spin trap

1994 ◽  
Vol 32 (6) ◽  
pp. 370-372 ◽  
Author(s):  
Andrej Staško ◽  
Vladimir Mišík ◽  
Ladislav Omelka
Keyword(s):  
Spin Trap

scholarly journals Kinetics of 1,4-Hydrogen Migration in the Alkyl Radical Reaction Class

2009 ◽  
Vol 113 (8) ◽  
pp. 1564-1573 ◽  
Author(s):  
Barbara Bankiewicz ◽  
Lam K. Huynh ◽  
Artur Ratkiewicz ◽  
Thanh N. Truong
Keyword(s):  
Alkyl Radical ◽  
Radical Reaction ◽  
Hydrogen Migration ◽  
Kinetics Of

scholarly journals Estimation of the Postmortem Duration of Mouse Tissue by Electron Spin Resonance Spectroscopy

2011 ◽  
Vol 2011 ◽  
pp. 1-11
Author(s):  
Shinobu Ito ◽  
Tomohisa Mori ◽  
Hideko Kanazawa ◽  
Toshiko Sawaguchi
Keyword(s):  
Free Radicals ◽  
Electron Spin Resonance ◽  
Electron Spin ◽  
Spin Trap ◽  
Detection Sensitivity ◽  
Mouse Tissue ◽  
Spin Adduct ◽  
Simple Method ◽  
Oxidation Stress ◽  
Spin Resonance

Electron spin resonance (ESR) method is a simple method for detecting various free radicals simultaneously and directly. However, ESR spin trap method is unsuited to analyze weak ESR signals in organs because of water-induced dielectric loss (WIDL). To minimize WIDL occurring in biotissues and to improve detection sensitivity to free radicals in tissues, ESR cuvette was modified and used with 5,5-dimethtyl-1-pyrroline N-oxide (DMPO). The tissue samples were mouse brain, hart, lung, liver, kidney, pancreas, muscle, skin, and whole blood, where various ESR spin adduct signals including DMPO-ascorbyl radical (AsA∗), DMPO-superoxide anion radical (OOH), and DMPO-hydrogen radical (H) signal were detected. Postmortem changes in DMPO-AsA∗and DMPO-OOH were observed in various tissues of mouse. The signal peak of spin adduct was monitored until the 205th day postmortem. DMPO-AsA∗in liver (y=113.8–40.7 log (day),R1=-0.779,R2=0.6,P<.001) was found to linearly decrease with the logarithm of postmortem duration days. Therefore, DMPO-AsA∗signal may be suitable for detecting an oxidation stress tracer from tissue in comparison with other spin adduct signal on ESR spin trap method.

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