Synergy Effect on Morphology Switching: Real-Time Observation of Photo-Orientation of Microphase Separation in a Block Copolymer

Authors

  • Prof. Shusaku Nagano,

    Corresponding author
    1. Nagoya University Venture Business Laboratory, Precursory Research for Embryonic Science and Technology (PRESTO), Furo-cho, Chikusa, Nagoya, 464-8603 (Japan)
    • Shusaku Nagano, Nagoya University Venture Business Laboratory, Precursory Research for Embryonic Science and Technology (PRESTO), Furo-cho, Chikusa, Nagoya, 464-8603 (Japan)

      Takahiro Seki, Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University (Japan)

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  • Yusuke Koizuka,

    1. Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University (Japan)
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  • Tomoya Murase,

    1. Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University (Japan)
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  • Masami Sano,

    1. Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University (Japan)
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  • Prof. Yuya Shinohara,

    1. Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, 277-8561 (Japan)
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  • Prof. Yoshiyuki Amemiya,

    1. Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, 277-8561 (Japan)
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  • Prof. Takahiro Seki

    Corresponding author
    1. Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University (Japan)
    • Shusaku Nagano, Nagoya University Venture Business Laboratory, Precursory Research for Embryonic Science and Technology (PRESTO), Furo-cho, Chikusa, Nagoya, 464-8603 (Japan)

      Takahiro Seki, Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University (Japan)

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  • We thank K. Kamihara and T. Hikage for technical assistance with the X-ray measurements. We also thank Dr. H. Fukumoto and Dr. T. Takaki at Mitsui Chemicals, Inc. for their assistance with TEM observations. This work was supported by the PRESTO program of the Japan Science and Technology Agency (JST) and a Grant-in-Aid for Scientific Research in Priority Areas “New Frontiers in Photochromism (No. 471)” from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) (Japan). The synchrotron X-ray scattering experiments were performed at the BL-15A in the KEK-Photon Factory, Tsukuba (proposal No. 2007G047 and 2009G065).

Abstract

original image

Light, (CCD) camera, action! Time-resolved synchrotron X-ray scattering measurements revealed that linear polarized light (LPL) caused reorientation of phase-separated mesoscopic amorphous cylinders within a light-responsive liquid crystalline (LC) matrix domain of a diblock copolymer (see scheme). Cooperative and synchronized motions occur at two hierarchical structures of the LC layer (molecular level) and the polymer domains (mesoscopic level).

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