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Involvement of Singlet Oxygen in the Solid‐State Photochemistry of P3HT
Author(s) -
Manceau Matthieu,
Rivaton Agnès,
Gardette JeanLuc
Publication year - 2008
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200800421
Subject(s) - singlet oxygen , photochemistry , reactivity (psychology) , polymer , singlet state , oxygen , solid state , chemistry , photodegradation , fluorescence , triplet state , materials science , excited state , molecule , catalysis , organic chemistry , photocatalysis , optics , medicine , physics , alternative medicine , pathology , nuclear physics
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.