Title: Photostability of a range of azobenzene dyes and their benzothiazolyl analogues in the presence of air
Abstract: Irradiation of a range of azobenzene dyes and their benzothiazolyl analogues with visible light in the presence of air has been shown to give rise to the conversion of a triplet oxygen to the singlet state. As proof of the presence of a singlet oxygen, its reaction with tetraphenylcyclopentadienone was studied. The formation of the oxidation product cis‐α,α′‐dibenzoylstilbene by a singlet oxygen has been confirmed by chemical ionisation mass spectrometry, both in ethyl benzoate solution and on polyester fabric. Inhibition of photodegradation of the dyes by a singlet oxygen quencher (DABCO) has also been demonstrated.
Publication Year: 2003
Publication Date: 2003-11-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 6
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