Structural Design of Nonlinear optical Chromophores for High-Performance Photorefractive Polymers
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概要
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Photorefractive response rate in a polymer composite of poly(N-vinylcarbazole)/2,4,7-trinitro-9-fluorenone, doped with 2,5-dimethyl-4-(4$'$-nitrophenylazo)anisole (DMNPAA) is improved by modifying the structure of DMNPAA. We found that four kinds of modified DMNPAA with alkyl substituents have fast orientational response to an external electric field and keep large anisotropy in polarizability. Among them, 4-butoxy-3-propyl-1-(4$'$-nitorophenylazo)benzene has the shortest reorientation time constant of 19 ms ($E=54$ V/μm) and photorefractive time constant of 80 ms ($I=2$ W/cm2, $E=54$ V/μm) that are 2,300 times and 63 times faster than those of the DMNPAA composite. The mechanism of the fast reorientation in new polymer composites is investigated. The fast reorientational response is achieved by the improvement of the dispersivity in the polymer composites and the decrease of the glass transition temperature.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2003-05-15
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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Matoba Osamu
Institute Of Industrial Science University Of Tokyo
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Honda Kayoko
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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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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Shimura Tsutomu
Institute of Industrial Science, University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan
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Ashihara Satoshi
Institute of Industrial Science, University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan
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Honda Kayoko
Institute of Industrial Science, University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan
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Matoba Osamu
Institute of Industrial Science, University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan
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Mutai Toshiki
Institute of Industrial Science, University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan
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Jung Gyeong
Institute of Industrial Science, University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan
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