Molecular Crystals and Liquid Crystals Science and Technology, Section A: Molecular Crystals and Liquid Crystals p. 303 - 310 (1994)
Update date:2022-08-24
Topics:
Malatesta
Milosa
Millini
Lanzini
Bortolus
Monti
Photo-oxidation of some representative spiropyrans and spiro-oxazines does not seem to involve singlet oxygen O2(1Δg). The photochromes rather behave, in the spiro and merocyanine form, as O2(1Δg) quenchers. Only a methoxy-nitro benzopyran derivative was found to promote formation of singlet oxygen. Superoxide anion O2 is likely the activated oxygen species responsible for their oxidative photodegradation.
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