Premium
The effect of micellization on the EPR spectra and reactivity of 2,2,4,4‐tetramethylpiperidinoxyl (TEMPO) radicals
Author(s) -
Aliaga Carolina,
Rezende Marcos Caroli,
Mena Geraldine
Publication year - 2016
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.4485
Subject(s) - chemistry , radical , reactivity (psychology) , electron paramagnetic resonance , photochemistry , micelle , trolox , antioxidant , organic chemistry , nuclear magnetic resonance , aqueous solution , antioxidant capacity , medicine , physics , alternative medicine , pathology
A series of 4‐alkanoyloxy‐2,2,6,6‐tetramethylpiperidinoxyl radicals was prepared, and their reactivity in water vis‐à‐vis antioxidant Trolox was compared. Spectral (electron paramagnetic resonance) and dynamic‐light‐scattering measurements suggested the formation of micelles for the more hydrophobic members of the series. The observed increase in reactivity for the micelle‐forming radicals reflected the increased local concentration of the radical fragment on the micellar interface. Copyright © 2016 John Wiley & Sons, Ltd.