Photo-Sensitivities of Immobilized Retinoids

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概要

• 論文の詳細を見る

• Optical absorption of retinoids, retinal and retinoic acid, in immobilized thin films were measured and evaluated using films fabricated by spin coating, Langmuir–Blodgett (LB), and layer-by-layer self-assembly methods. We succeeded in forming thin films of immobilized retinoids fabricated by self-assembly methods for the first time. Based on measurements with an atomic force microscope (AFM), it is estimated that film thickness was about 30 nm, with a total of sixteen layers. The photoisomerization reaction rate of the self-assembled film was found to be much more suppressed than that of LB films. Photoreceptive devices were built around films produced using a chitosan sol and immobilized retinoids in a self-assembled film, and the photocurrent responses of these devices were measured. Photoreceptive biophotonic devices using a self-assembled film showed photocurrent response by irradiation of ultraviolet light of 254 nm. Photocurrent response of the self-assembled films was faster than that of sol-based films. These nanoscale photoreceptive devices may be applied to bio-functional optical sensing or to future visual information processing devices.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2009-03-25

著者

• Ikeda Yasukazu

  Graduate School of Bionics, Computer and Media Sciences, Tokyo University of Technology, Katakura, Hachioji, Tokyo 192-0982, Japan

• Tsuchida Yosuke

  Graduate School of Bionics, Computer and Media Sciences, Tokyo University of Technology, Katakura, Hachioji, Tokyo 192-0982, Japan

• Kobayashi Naohiro

  Graduate School of Bionics, Computer and Media Sciences, Tokyo University of Technology, Katakura, Hachioji, Tokyo 192-0982, Japan

• Arakawa Takamasa

  Graduate School of Bionics, Computer and Media Sciences, Tokyo University of Technology, Katakura, Hachioji, Tokyo 192-0982, Japan

• Yamano Shinichiro

  Graduate School of Bionics, Computer and Media Sciences, Tokyo University of Technology, Katakura, Hachioji, Tokyo 192-0982, Japan

• Mitachi Seiko

  Graduate School of Bionics, Computer and Media Sciences, Tokyo University of Technology, Katakura, Hachioji, Tokyo 192-0982, Japan

• Tsuchida Yosuke

  Graduate School of Bionics, Computer and Media Sciences, Tokyo University of Technology, Hachioji, Tokyo 192-0982, Japan

• Mitachi Seiko

  Graduate School of Bionics, Computer and Media Sciences, Tokyo University of Technology, Hachioji, Tokyo 192-0982, Japan

関連論文

• Photocurrent Response of Photoreceptive Devices Using a Retinoid Immobilized in a Chitosan Gel Film
• Photo-Sensitivities of Immobilized Retinoids

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