ZnO/PVA Macroscopic Fibers Bearing Anisotropic Photonic Properties

Authors

  • Natacha Kinadjian,

    1. Centre de Recherche Paul Pascal, office 115, UPR 8641-CNRS, 115 Avenue Albert Schweitzer, 33600 Pessac, France, Phone: 33 556 845630, FAX: 33 556 845600
    2. Department of Chemistry & Waterloo Institute of Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1, FAX: +1 519 746 0435
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  • Marie-France Achard,

    1. Centre de Recherche Paul Pascal, office 115, UPR 8641-CNRS, 115 Avenue Albert Schweitzer, 33600 Pessac, France, Phone: 33 556 845630, FAX: 33 556 845600
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  • Beatriz Julián-López,

    Corresponding author
    1. Department of organic and inorganic chemistry ESTCE - Universitat Jaume I. Avda. Sos Baynat s/n, 12071 Castellón, Spain, Phone: 34 964 728234, FAX: 34 964 728214
    • Department of organic and inorganic chemistry ESTCE - Universitat Jaume I. Avda. Sos Baynat s/n, 12071 Castellón, Spain, Phone: 34 964 728234, FAX: 34 964 728214
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  • Maryse Maugey,

    1. Centre de Recherche Paul Pascal, office 115, UPR 8641-CNRS, 115 Avenue Albert Schweitzer, 33600 Pessac, France, Phone: 33 556 845630, FAX: 33 556 845600
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  • Philippe Poulin,

    1. Centre de Recherche Paul Pascal, office 115, UPR 8641-CNRS, 115 Avenue Albert Schweitzer, 33600 Pessac, France, Phone: 33 556 845630, FAX: 33 556 845600
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  • Eric Prouzet,

    1. Department of Chemistry & Waterloo Institute of Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1, FAX: +1 519 746 0435
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  • Rénal Backov

    Corresponding author
    1. Centre de Recherche Paul Pascal, office 115, UPR 8641-CNRS, 115 Avenue Albert Schweitzer, 33600 Pessac, France, Phone: 33 556 845630, FAX: 33 556 845600
    • Centre de Recherche Paul Pascal, office 115, UPR 8641-CNRS, 115 Avenue Albert Schweitzer, 33600 Pessac, France, Phone: 33 556 845630, FAX: 33 556 845600.
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  • This manuscript is dedicated to Professor Purificación Escribano

Abstract

Composite PVA/ZnO-nanorods fibers, synthesized through co-axial flux extrusion exhibit higher anisotropic photonic properties, both in absorption and emission, as a result of the collective alignment of the ZnO nanorods along the main axis of the PVA fiber. This photonic anisotropy is triggered by a synergistic interaction between the PVA matrix, stretched above the glass transition temperature (Tg), and cooled down under strain. Compared with non-elongated fibers that present an isotropic emission, composite fibers previously submitted to a tensile stress absorb selectively UV emission when the polarized laser beam is parallel to the main axis of the fiber. In addition, their photolumincescence is also anisotropic, with a waveguide behavior along the main axis of the fiber. Mechanical properties of these composite fibers are also drastically improved, compared with pure PVA fibers: the longitudinal Young modulus of these fibers is increased from 2 to 6 GPa upon ZnO addition, a value similar to those already observed for composite fibers, prepared either with carbon nanotubes, or V2O5 macroscopic fibers.

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