Radically different antioxidants: Thermally generated carbon-centered radicals as chain-breaking antioxidants

被引：59
作者：
Frenette, Mathieu
MacLean, Patricia D.
Barclay, L. Ross C. [1 ]
Scaiano, Juan C.
机构：
[1] Univ Ottawa, Dept Chem, Ottawa, ON K1N 6N5, Canada
[2] Mt Allison Univ, Dept Chem, Sackville, NB E4L 1G8, Canada
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2006年 / 128卷 / 51期
关键词：
D O I：
10.1021/ja066870j
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new class of thermally activated chain-breaking antioxidants is presented. Dimers of persistent carbon-centered radicals are able to inhibit the autoxidation of cumene and styrene with better rate constants than the commercial antioxidant Irganox HP-136 and 3,5-di-tert-butyl-4-hydroxyanisole. A dramatic increase in antioxidant activity is observed with increasing temperature as more dimers dissociate to their corresponding persistent radicals. Copyright © 2006 American Chemical Society.
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页码：16432 / 16433
页数：2
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