Spirooxazine Photoisomerization and Relaxation in Polymer Matrices
Joint Authors
Larkowska, Maria
Kucharski, Stanislaw
Wuebbenhorst, Michael
Source
International Journal of Polymer Science
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-08-14
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
9′-Hydroxy-1,3,3-trimethylspiro[indoline-2,3′[3H]naphtha[2,1-b]-1,4oxazine] (SPO-7OH) was used in studies of photochromic transformations in polymer matrices.
Illumination with UV lamp caused opening the spirostructure of the oxazine with formation of open merocyanine species absorbing at ca.
610 nm.
The kinetic studies of thermal relaxation of the open form showed that this process can be described with a biexponential function including both photochemical reaction and rheological behaviour of the polymeric environment.
Basing on Arrhenius plot of the rate constant ascribed to the photochemical reaction, the activation energy was determined, which was 66.1 and 84.7 kJ/mole for poly(methyl methacrylate-co-butyl methacrylate) and poly(vinylpyrrolidone) matrix, respectively.
American Psychological Association (APA)
Larkowska, Maria& Wuebbenhorst, Michael& Kucharski, Stanislaw. 2011. Spirooxazine Photoisomerization and Relaxation in Polymer Matrices. International Journal of Polymer Science،Vol. 2011, no. 2011, pp.1-6.
https://search.emarefa.net/detail/BIM-486264
Modern Language Association (MLA)
Larkowska, Maria…[et al.]. Spirooxazine Photoisomerization and Relaxation in Polymer Matrices. International Journal of Polymer Science No. 2011 (2011), pp.1-6.
https://search.emarefa.net/detail/BIM-486264
American Medical Association (AMA)
Larkowska, Maria& Wuebbenhorst, Michael& Kucharski, Stanislaw. Spirooxazine Photoisomerization and Relaxation in Polymer Matrices. International Journal of Polymer Science. 2011. Vol. 2011, no. 2011, pp.1-6.
https://search.emarefa.net/detail/BIM-486264
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-486264