The Detection of Alkoxy and Other Radicals in the Gamma Radiolysis of Alcohols by an Electron Spin Resonance and Spin Trapping Method

1974 ◽  
Vol 52 (21) ◽  
pp. 3645-3650 ◽  
Author(s):  
Frederick Peter Sargent ◽  
Edward Michael Gardy
Keyword(s):  
Electron Spin Resonance ◽  
Carbon Atom ◽  
Electron Spin ◽  
Spin Trapping ◽  
Methyl Radicals ◽  
Alkoxy Radicals ◽  
Spin Resonance ◽  
Gamma Radiolysis ◽  
Trapping Method

The radicals produced during γ radiolysis of methanol, ethanol, 1-propanol, 2-propanol, and t-butanol have been trapped by reaction with 2-nitroso-2-methylpropane (t-nitrosobutane) to give nitroxides which are detected by e.s.r.[Formula: see text]All the alcohols gave alkoxy radicals and, with the exception of t-butanol, radicals derived by the loss of an H atom from the carbon atom adjacent to the OH group. Methyl radicals were detected in t-butanol.

Electron spin resonance analysis of different mushroom parts and their hydroxyl radical scavenging activities assessed by spin trapping method

2021 ◽  
Vol 27 (3) ◽  
pp. 529-536
Author(s):  
Tomomi Kanno ◽  
Shigeaki Nakazawa ◽  
Etsuko Harada ◽  
Hiromi Kameya ◽  
Yoshiaki Miyake ◽  
...  
Keyword(s):  
Electron Spin Resonance ◽  
Hydroxyl Radical ◽  
Electron Spin ◽  
Radical Scavenging ◽  
Spin Trapping ◽  
Resonance Analysis ◽  
Spin Resonance ◽  
Trapping Method

Electron spin resonance spin-trapping study of peroxidation of human low density lipoprotein

1988 ◽  
Vol 66 (8) ◽  
pp. 1957-1960 ◽  
Author(s):  
Dubravka Krilov ◽  
Greta Pifat ◽  
Janko N. Herak
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Spin Trapping ◽  
Low Density ◽  
Lipid Domain ◽  
Spin Resonance ◽  
Trapping Method ◽  
Resonance Spin

The electron spin resonance spin-trapping method has been used for detection of radicals in human low density lipoprotein (LDL) solution saturated with oxygen. The trapped radicals could be detected after about a day in an antioxidant-free solution. Two types of radicals are formed and stabilized in the lipid domain of LDL. The nature of the trapped radicals remains unclear:kinetic considerations suggest the trapped radicals to be of the LO- type, while the spectroscopic parameters are in favour of L- type radicals.

ChemInform Abstract: RADICAL YIELDS IN IRRADIATED METHANOL AND ETHANOL. AN ELECTRON SPIN RESONANCE AND SPIN TRAPPING METHOD

1976 ◽  
Vol 7 (26) ◽  
pp. no-no
Author(s):  
FREDERICK PETER SARGENT ◽  
EDWARD MICHAEL GARDY
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Spin Trapping ◽  
Spin Resonance ◽  
Trapping Method

Radical yields in irradiated methanol and ethanol. An electron spin resonance and spin trapping method

1976 ◽  
Vol 80 (8) ◽  
pp. 854-856 ◽  
Author(s):  
Frederick P. Sargent ◽  
Edward M. Gardy
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Spin Trapping ◽  
Spin Resonance ◽  
Trapping Method

Radical Yields in Irradiated Methanol and Ethanol. An Electron Spin Resonance and Spin Trapping Method - Correction

1976 ◽  
Vol 80 (15) ◽  
pp. 1738-1738
Author(s):  
Frederick Sargent ◽  
Edward Gardy
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Spin Trapping ◽  
Spin Resonance ◽  
Trapping Method

Direct Observation of the Radicals Formed in the Radiolysis of Liquid Benzyl Alcohol. An Electron Spin Resonance and Spin Trapping Method

1975 ◽  
Vol 53 (20) ◽  
pp. 3128-3132 ◽  
Author(s):  
Frederick Peter Sargent ◽  
Edward Michael Gardy
Keyword(s):  
Electron Spin Resonance ◽  
Benzyl Alcohol ◽  
Electron Spin ◽  
Direct Observation ◽  
Spin Trapping ◽  
Alkoxy Radical ◽  
Spin Resonance ◽  
Benzyl Radicals ◽  
Trapping Method

Intermediates formed during radioylsis of benzyl alcohol have been identified by an e.s.r. and spin trapping method. Solutions of tert-BuNO in benzyl alcohol were irradiated insitu with 3 MeV electrons and the e.s.r. spectra of the resulting nitroxides directly recorded.[Formula: see text]These demonstrated that benzyl, PhCH2.,and hydroxybenzyl, PhĊHOH, radicals are formed in the radiolysis. By an examination of the effects of the addition of electron scavengers, it was shown that the benzyl radicals are probably directly formed from the reaction of electrons with benzyl alcohol. Since these scavengers had no effect on the yield of PhĊHOH trapped, this radical is not derived from the reactions of electrons. It is suggested that it is partly produced by reaction of the alkoxy radical, PhCH2O.,with the solvent benzyl alcohol.[Formula: see text]

Sign in / Sign up

Export Citation Format

Share Document