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Photochromic behavior of spiropyran in polymer matrices

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Abstract

The photoexcitation, relaxation, and optical erasure regimes of spiropyran- (SP-) doped polymer films were studied. Cellulose acetate, poly(vinyl acetate), and poly(methyl methacrylate) (PMMA) were used as host polymer matrices. We studied the character of the photoreaction for both coloring and bleaching processes. Reversible holographic recording in SP–PMMA films and the origin of the photochemical fatigue was studied upon repeated UV–visible irradiation cycles.

© 2001 Optical Society of America

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