title: Anisotropic charge transport in ion-conductive photoresponsive polyethylene oxide-based mesomorphic materials.
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.
authors.affiliation: Université de Lille-Sciences et Techniques, Unité Matériaux et Transformations (UMET), CNRS, UMR 8207, UFR de Physique, P5, 59655 Villeneuve d'Ascq Cedex, France.
authors.forename: Corinne
authors.initials: C
authors.lastname: Binet
authors.affiliation: Université de Lille-Sciences et Techniques, Unité Matériaux et Transformations (UMET), CNRS, UMR 8207, UFR de Physique, P5, 59655 Villeneuve d'Ascq Cedex, France.
authors.forename: Alexandre
authors.initials: A
authors.lastname: Allart
authors.affiliation: ICMMO, UMR 8182 CNRS-U. P-Sud, Université Paris-Saclay, Université Paris-Sud, 91405 Orsay Cedex, France.|Laboratoire Léon Brillouin, UMR 12 CNRS-CEA, Université Paris-Saclay, CEA Saclay, 91191 Gif sur Yvette Cedex, France.
authors.forename: Patrick
authors.initials: P
authors.lastname: Judeinstein
authors.affiliation: Université de Lille-Sciences et Techniques, Unité Matériaux et Transformations (UMET), CNRS, UMR 8207, UFR de Physique, P5, 59655 Villeneuve d'Ascq Cedex, France.
authors.forename: Frédérick
authors.initials: F
authors.lastname: Roussel