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1994
Conference Paper
Titel
Electro-optical and pyroelectrical thermal analysis of novel nonlinear optical side-chain polymers with high thermal stability
Abstract
Polymers containing nonlinear optical moieties were prepared on the basis of maleic anhydride copolymers. Azo dyes such as Disperse Red 1 (DR 1) were attached to the polymer backbones via esterification, amidization, or imidization. Optimal poling conditions for the side-chain polymers were determined. After electrode poling with a bias voltage of 200 V at a temperature of 185 degrees C, the spin-coated samples were slowly cooled down to room temperature with the poling field still applied. The thermal stabilities of the poled polymer films were measured by means of electro-optical (EOTA) and pyroelectrical (PTA) thermal analysis and compared to the respective responses of DR 1/polymethylmethacrylate (PMMA) guest/host polymer samples. Both experimental techniques (EOTA and PTA) are discussed together with the experimental results. An electro-optical r33 coefficient of approximately 6 pm/V was achieved at a wavelength of 780 nm for one of the side-chain polymers, and the electro-optical activity decreased only at temperatures above 150 degrees C.

Language
English
Tags
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electro-optical effects
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nonlinear optical susceptibility
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optical harmonic generation
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optical polymers
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polymer blends
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polymer films
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pyroelectricity
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thermal analysis
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nonlinear optical polymers
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optimal poling
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shg
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azo dyes
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electro-optical thermal analysis
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pyroelectrical thermal analysis
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high thermal stability
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maleic anhydride copolymers
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esterification
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amidization
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imidization
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side-chain polymers
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spin-coated
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electro-optical activity