PHOTOCHEMICAL PROPERTIES OF SPIROOXAZINES

Authors
FIRTH AA MCGARVEY DJ TRUSCOTT TG
Citation
Aa. Firth et al., PHOTOCHEMICAL PROPERTIES OF SPIROOXAZINES, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 246, 1994, pp. 295-298
Citations number
4
Categorie Soggetti
Crystallography
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
246
Year of publication
1994
Pages
295 - 298
Database
ISI
SICI code
1058-725X(1994)246:<295:PPOS>2.0.ZU;2-D
Abstract
The quenching of singlet oxygen (O-2(1) Delta(g)) by the closed and op en forms of various spiroindolinonaphthoxazines has been Investigated by use of pulsed laser techniques. Significant variations in the quenc hing rate constants have been found depending on the molecular structu res of the photochromic compounds. In addition, experiments which atte mpt to resolve the contributions to singlet oxygen quenching by the cl osed and open forms of the photochromics are discussed. It is demonstr ated that the open form exhibits enhanced singlet oxygen quenching rel ative to the closed form.