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Proceedings Paper

Photoassisted poling and orientational relaxation of dye molecules in polymers: the case of spiropyran
Author(s): Sophie Hosotte; Michel L. Dumont
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Paper Abstract

Photoassisted poling of azo-dyes in polymer films is now well-known: it is a consequence of trans-cis photoisomerization. We report new experiments involving the photoisomerization of spiropyrans into merocyanines. With the help of a theoretical model, we discuss poling mechanisms. The study of the relaxation of electro-optical properties of photomerocyanine gives new results on the rotational mobility of dye molecules in polymers: in addition to the site-to-site variation, it is necessary to introduce a time variation of the mobility, after the end of the poling process.

Paper Details

Date Published: 1 November 1996
PDF: 11 pages
Proc. SPIE 2852, Nonlinear Optical Properties of Organic Materials IX, (1 November 1996); doi: 10.1117/12.256189
Show Author Affiliations
Sophie Hosotte, Institut d'Optique Theorique et Appliquee (France)
Michel L. Dumont, Institut d'Optique Theorique et Appliquee (France)


Published in SPIE Proceedings Vol. 2852:
Nonlinear Optical Properties of Organic Materials IX
Gustaaf R. Moehlmann, Editor(s)

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