Highly Stable Host–Guest Photorefractive Polymer Composite with Low Glass Transition Temperature
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概要
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We studied the phase stability and photorefractive properties of a new poly(N-vinylcarbazole) (PVK)-based photorefractive polymer composite by modifying the structure of a nonlinear optical chromophore (NLO), 4-butoxy-3-propyl-1-(4$'$-nitrophenyazo)benzene. The shelf life of a sample with a modified NLO, 4-(2-ethylhexyloxy)3-propyl-1-(4$'$-nitrophenyazo) benzene was extended by more than five months even though it had a low glass transition temperature ($T_{\text{g}}$) of $-19$°C. This material also had a short photorefractive response time constant of 33 ms and a high diffraction efficiency of 49% at an electric field of 100 V/μm and a total writing intensity of 942 mW/cm2. These desirable characteristics are believed to be due to the following reasons: first, the new chromophore acts as a plasticizer, thereby enhancing the orientation of the NLO and second, the solubility of the chromophore in a polymer matrix increases, inhibiting crystallization and providing a high optical quality.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2006-01-15
著者
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Shimura Tsutomu
Institute Of Industrial Science University Of Tokyo
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Araki Koji
Institute Of Industrial Science The University Of Tokyo
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Jung Gyeong
Institute Of Industrial Science University Of Tokyo
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Mutai Toshiki
Institute Of Industrial Science The University Of Tokyo
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Ashihara Satoshi
Institute Of Industrial Science University Of Tokyo
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Fujimura Ryushi
Institute Of Industrial Science University Of Tokyo
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Kuroda Kazuo
Institute Of Industrial Science Umversity Of Tokyo
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Araki Koji
Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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Akazawa Takayuki
Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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