Spirooxazine Photoisomerization and Relaxation in Polymer Matrices
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...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2011-01-01
|
| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2011/627195 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850159768139726848 |
|---|---|
| author | Maria Larkowska Michael Wuebbenhorst Stanislaw Kucharski |
| author_facet | Maria Larkowska Michael Wuebbenhorst Stanislaw Kucharski |
| author_sort | Maria Larkowska |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-b2e664f33a20426f9452de9e1b34b0a1 |
| institution | OA Journals |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj-art-b2e664f33a20426f9452de9e1b34b0a12025-08-20T02:23:24ZengWileyInternational Journal of Polymer Science1687-94221687-94302011-01-01201110.1155/2011/627195627195Spirooxazine Photoisomerization and Relaxation in Polymer MatricesMaria Larkowska0Michael Wuebbenhorst1Stanislaw Kucharski2Department of Polymer Engineering and Technology, Wrocław University of Technology, 50-370 Wrocław, PolandDepartment of Physics and Astronomy, Catholic University Leuven, 3001 Heverlee, BelgiumDepartment of Polymer Engineering and Technology, Wrocław University of Technology, 50-370 Wrocław, Poland9′-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.http://dx.doi.org/10.1155/2011/627195 |
| spellingShingle | Maria Larkowska Michael Wuebbenhorst Stanislaw Kucharski Spirooxazine Photoisomerization and Relaxation in Polymer Matrices International Journal of Polymer Science |
| title | Spirooxazine Photoisomerization and Relaxation in Polymer Matrices |
| title_full | Spirooxazine Photoisomerization and Relaxation in Polymer Matrices |
| title_fullStr | Spirooxazine Photoisomerization and Relaxation in Polymer Matrices |
| title_full_unstemmed | Spirooxazine Photoisomerization and Relaxation in Polymer Matrices |
| title_short | Spirooxazine Photoisomerization and Relaxation in Polymer Matrices |
| title_sort | spirooxazine photoisomerization and relaxation in polymer matrices |
| url | http://dx.doi.org/10.1155/2011/627195 |
| work_keys_str_mv | AT marialarkowska spirooxazinephotoisomerizationandrelaxationinpolymermatrices AT michaelwuebbenhorst spirooxazinephotoisomerizationandrelaxationinpolymermatrices AT stanislawkucharski spirooxazinephotoisomerizationandrelaxationinpolymermatrices |