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- W1987433089 abstract "The photo excitations of Spiropyran-doped polymer films were studied. Cellulose acetate (CA), commercial ploy(methyl methacrylate) (PMMA) and PMMA prepared by radical polymerisation of MMA, were used as host polymer matrices. The open form of SP presents a maximum of absorption cantered at about 600 nm upon UV irradiation. We have determined the photoreaction rate constants, kuv and k15, for the coloring and bleaching processes. Reversible holographic recording in SPIPMMA films was studied and photochemical fatigue resistance was evaluated upon repeated UVfVisible irradiation cycles. We found a loss of 42, 53 and 74% respectively in PMMA by gravity deposition, PMMA (by polymerisation of MMA) and cellulose acetate films." @default.
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- W1987433089 date "2000-12-15" @default.
- W1987433089 modified "2023-09-23" @default.
- W1987433089 title "Photochromic reaction of spiropyran in polymer matrices" @default.
- W1987433089 doi "https://doi.org/10.1117/12.406295" @default.
- W1987433089 hasPublicationYear "2000" @default.
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