Versatile Chromism of Titanium Oxide Hydrate/Poly(vinyl alcohol) Hybrid Systems

Authors

  • Manuela Russo,

    1. Department of Materials, Eidgenössische Technische Hochschule (ETH) Zürich, CH-8093 Zürich, Switzerland
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  • Stephen E. J. Rigby,

    1. Faculty of Life Sciences, Manchester Interdisciplinary Biocentre, University of Manchester, Manchester, M1 7DN, UK
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  • Walter Caseri,

    1. Department of Materials, Eidgenössische Technische Hochschule (ETH) Zürich, CH-8093 Zürich, Switzerland
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  • Natalie Stingelin

    Corresponding author
    1. Department of Materials, Eidgenössische Technische Hochschule (ETH) Zürich, CH-8093 Zürich, Switzerland
    2. Department of Materials and Centre for Plastic Electronics, Imperial College London, London, SW7 2AZ, UK
    • Department of Materials, Eidgenössische Technische Hochschule (ETH) Zürich, CH-8093 Zürich, Switzerland.
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Abstract

original image

A hybrid material based on titanium oxide hydrates and poly(vinyl alcohol) is presented that is fully transparent even at high content of the inorganic species and which exhibits a reversible change in coloration from transparent/colorless to blue upon exposure to UV irradiation and an irreversible transition to yellow and red during annealing. Dichroic structures are produced by tensile drawing followed by annealing.

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