Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5204427 | Polymer Degradation and Stability | 2007 | 5 Pages |
Abstract
The hydrogen donation kinetics of four 3-aryl-benzofuranones with different chemical structures toward tert-butoxyl radicals were studied using laser flash photolysis (LFP) technique. The rate constants of hydrogen reactions, which can be used to evaluate the hydrogen donating abilities of 3-aryl-benzofuranones toward radicals, were obtained. The results showed that the position of substituted methyl group has a very important effect on the hydrogen donating ability of benzofuranone toward tert-butoxyl radicals, i.e. if the methyl group is on 2â²-position, the hydrogen donation of 3-aryl-benzofuranone toward tert-butoxyl radicals will be prevented and the hydrogen donating ability will be weakened.
Keywords
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Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Xin Meng, Zhong Xin, Yongrong Li, Zhi Cai,