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Published on: August 12, 2013
Anisotropic charge transport in ion-conductive photoresponsive polyethylene oxide-based mesomorphic materials
Corinne Binet1, Alexandre Allart1, Patrick Judeinstein2,3
1Université de Lille-Sciences et Techniques, Unité Matériaux et Transformations (UMET), CNRS, UMR 8207, UFR de Physique, P5, 59655 Villeneuve d'Ascq Cedex, France.
Abstract:
The mechanism of charge motion in conductive and photosensitive mesogenic block copolymers containing polyethylene oxide (PEO) segments is investigated over a wide frequency and temperature range with the broadband dielectric spectroscopy technique. It is found that the ultraviolet (UV) irradiation, the UV intensity, and the anchoring conditions of mesogenic unit in the cells produce changes in conductivity properties and in the molecular arrangement. The anisotropic nature of the conductivity is established.
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