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Photo-Fabrication of Titania Hybrid Films with Tunable Hierarchical Structures and Stimuli-Responsive Properties

Authors

  • Masahide Takahashi,

    Corresponding author
    1. Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan)
    2. Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011 (Japan)
    3. Laboratorio di Scienza dei Materiali e Nanotecnologie, (LMNT), CR-INSTM, Università di Sassari, Palazzo Pou Salit, Piazza Duomo 6, 07041 Alghero (Sassari) (Italy)
    • Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan)
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  • Masafumi Inoue,

    1. Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan)
    2. Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011 (Japan)
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  • Rie Ihara,

    1. Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan)
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  • Toshinobu Yoko,

    1. Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011 (Japan)
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  • Takashi Nemoto,

    1. Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011 (Japan)
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  • Seiji Isoda,

    1. Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011 (Japan)
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  • Luca Malfatti,

    1. Laboratorio di Scienza dei Materiali e Nanotecnologie, (LMNT), CR-INSTM, Università di Sassari, Palazzo Pou Salit, Piazza Duomo 6, 07041 Alghero (Sassari) (Italy)
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  • Stefano Costacurta,

    1. Laboratorio di Scienza dei Materiali e Nanotecnologie, (LMNT), CR-INSTM, Università di Sassari, Palazzo Pou Salit, Piazza Duomo 6, 07041 Alghero (Sassari) (Italy)
    2. Associazione CIVEN, Via delle Industrie 5, 30175 Venezia (Italy)
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  • Plinio Innocenzi

    Corresponding author
    1. Laboratorio di Scienza dei Materiali e Nanotecnologie, (LMNT), CR-INSTM, Università di Sassari, Palazzo Pou Salit, Piazza Duomo 6, 07041 Alghero (Sassari) (Italy)
    • Laboratorio di Scienza dei Materiali e Nanotecnologie, (LMNT), CR-INSTM, Università di Sassari, Palazzo Pou Salit, Piazza Duomo 6, 07041 Alghero (Sassari) (Italy).
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Abstract

Photo‒fabrication of surface‒wrinkled hybrid organic‒inorganic composite films containing TiO2 nanoparticles stabilized with CTA+ and PVP allows the preparation of tunable hierarchical structures with environmentally responsive properties. With changes in relative humidity, the film swells by absorbing water and smooths out the wrinkles at the micrometer scale; this response is reversible and wet‒dry cycles can be run.

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