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Published on: January 2, 2012
Solvent-independent antioxidant activity from thermally generated carbon-centered radical antioxidants
Vasilisa Filippenko1, Mathieu Frenette, J C Scaiano
1Department of Chemistry, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada.
Abstract:
A new and unusual class of chain-breaking antioxidants has been discovered, where the actual antioxidant is, paradoxically, a carbon-centered radical. Properties of these molecules are currently being studied. The solvent dependence on antioxidant activity of the HP-136 dimer has been measured, in solvents of varying H-bond accepting ability, by the inhibited oxygen uptake (IOU) method. As anticipated, the HP-136 dimer was found to show much less solvent effect on antioxidant activity than a representative phenolic antioxidant.
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