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Involvement of Singlet Oxygen in the Solid-State Photochemistry of P3HT

✍ Scribed by Matthieu Manceau; Agnès Rivaton; Jean-Luc Gardette

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
204 KB
Volume
29
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

We studied the role that singlet oxygen plays in the solid‐state photochemistry of poly(3‐hexylthiophene) (P3HT). The photosensitized formation of singlet oxygen by solid‐state P3HT and its subsequent reactivity on the polymer were investigated. Using a fluorescent probe, it was found that singlet oxygen (^1^O~2~) could be produced by irradiation of P3HT by photosensitization, with no oxidation of the polymer. In addition, ^1^O~2~ was directly formed on P3HT via a chemical reaction, again with no oxidation of the polymer. These results give strong evidence that ^1^O~2~ is not the principal photo‐oxidative degradation intermediate of P3HT, which conflicts with previous reports.

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