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Chemistry of singlet oxygen. XVIII. Rates of reaction and quenching of alpha-tocopherol and singlet oxygen |
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| Authors: | C S Foote T Y Ching G G Geller |
| Abstract: | Abstract —α-Tocopherol scavenges singlet oxygen (produced by methylene blue photosensitization in methanol) by a combination of chemical reaction (4.6 times 107M-1s-1) and quenching (6.2 times 108M-1 s-1). The total rate of scavenging (6.7 times 108 M-1s-1) makes it an effective protective agent against photooxidation mediated by singlet oxygen. |
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