Oxidative degradation of organic photochromes

Article abstract of DOI:10.1080/10587259408037833

Photo-oxidation of some representative spiropyrans and spiro-oxazines does not seem to involve singlet oxygen O₂(¹Δ_g). The photochromes rather behave, in the spiro and merocyanine form, as O₂(¹Δ_g) 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.

Full text of DOI:10.1080/10587259408037833

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Molecular Crystals and Liquid
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Section A. Molecular Crystals and
Liquid Crystals
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Oxidative degradation of organic
photochromes
b
a
a
Vincenzo Malatesta , Mario Milosa , Roberto Millini
,
b
c
c
Luigi Lanzini , Piero Bortolus & Sandra Monti
a
Enichem Synthesis , via Maritano 26, San Donate Milanese
MI), 20097 (I)
(
b
EniRicerche , via Maritano 26, San Donato Milanese (MI),
0097 (I)
2
c
Istituto FRAE-CNR , via de' Castagnoli 1, Bologna (I)
Published online: 24 Sep 2006.
To cite this article: Vincenzo Malatesta , Mario Milosa , Roberto Millini , Luigi Lanzini , Piero
Bortolus & Sandra Monti (1994) Oxidative degradation of organic photochromes, Molecular
Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid
Crystals, 246:1, 303-310, DOI: 10.1080/10587259408037833
To link to this article: http://dx.doi.org/10.1080/10587259408037833
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