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Kinetic and redox characteristics of phenoxyl radicals of eugenol and isoeugenol: A pulse radiolysis study
Author(s) -
Guha S. N.,
Indira Priyadarsini K.
Publication year - 2000
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/(sici)1097-4601(2000)32:1<17::aid-jck3>3.0.co;2-5
Subject(s) - isoeugenol , chemistry , radiolysis , radical , eugenol , phenols , photochemistry , hydroquinone , trolox , redox , kinetics , organic chemistry , antioxidant , dpph , physics , quantum mechanics
The phenoxyl radicals of eugenol (EgOH) and isoeugenol (iEgOH) were generated by the specific one‐electron oxidant N 3 · using pulse radiolysis technique, and were characterized by their absorption spectra, decay and formation kinetics, and one‐electron reduction potential (E 7 1 ) values. Reactivities of eugenol phenoxyl radical with the biologically important molecule, trolox C (analogue of vitamin E, α‐tocopheral), were determined. Reactions of OH with these phenols were studied at different pHs and suitable mechanisms for these reactions were suggested. Scavenging abilities of the phenols toward highly damaging Br · , NO 2 · , and CCl 3 O 2 · radicals were evaluated. © 2000 John Wiley & Sons, Inc. Int J Chem Kinet 32: 17–23, 2000