Photo- and thermoinduced ring opening reaction of 2[(1,3,3-trimethylindoline-2(1H)-yliden)propen-1-yl]-3,3-dimethylindolino[1,2-b]-oxazolidine in polymer films |
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| Authors: | I Petkov F Charra J -M Nunzi T Deligeorgiev |
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| Institution: | (1) Department of Organic Chemistry, University of Sofia, 1 James Bourchier Avenue, 1126 Sofia, Bulgaria;(2) Centre d’Etude de Saclay, DEIN-SPE, F-91191 Gif sur Yvette, Paris, France;(3) Laboratoire POMA, University of Angers, 2, Bd. Lavoisier, 49045 Angers Cedex 01, France |
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| Abstract: | The influence of UV light and temperature on poly(methylmethacrylate) (PMMA) and poly(vinylchloride) (PVC) films, doped with
2(1,3,3-trimethylindoline-2(1H)-yliden)propen-1-yl]-3,3-dimethylindolino1,2-b]-oxazolidine has been investigated. The radiation-induced
colour was analyzed spectrophotometrically at the maximum of the absorption peak at 560 nm. The effect of the temperature
on unirradiated and irradiated films was studied. The results demonstrate a strong photochromic and a weak thermochromic behaviour
of the PMMA and PVC films. The relationship of photocolouration-thermal decolouration is discussed based on the spectral results
reported here. |
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| Keywords: | photochromism thermochromism UV light irradiation polymer films |
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