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Proceedings Paper

Azobenzene-polymer-stabilized ferroelectric liquid crystals: photoalignment and morphology
Author(s): Yue Zhao; Nadine Paiement; Sonia Sevigny; Steve LeClair; Shahrokh Motallebi; Martin Giguere; Luc Bouchard
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Paper Abstract

We exploit the use of azobenzene-containing polymer networks in ferroelectric liquid crystals (FLCs). One possible utility of the polymer in such a system is to induce and stabilize a bulk alignment of the FLC host, without surface orientation layers, through the photo-orientation of the azobenzene groups on the network under lineally polarized irradiation. Three azobenzene monomers, inclduign an achiral diacrylate, a chiral dimethacrylate and an achiral divinyl ether, were synthesized and investigated with two commercial FLC mixtures; polymerization was carried out thermally and photochemically. The photo-induced alignment of FLC was observed with two of these azobenzene polymers. Different phase separation behaviors and resulting morphologies were observed.

Paper Details

Date Published: 30 April 2003
PDF: 9 pages
Proc. SPIE 5003, Liquid Crystal Materials, Devices, and Applications IX, (30 April 2003); doi: 10.1117/12.473841
Show Author Affiliations
Yue Zhao, Univ. de Sherbrooke (Canada)
Nadine Paiement, Univ. de Sherbrooke (Canada)
Sonia Sevigny, Univ. de Sherbrooke (Canada)
Steve LeClair, Univ. de Sherbrooke (Canada)
Shahrokh Motallebi, St-Jean Photochimie Inc. (Canada)
Martin Giguere, St-Jean Photochimie Inc. (Canada)
Luc Bouchard, St-Jean Photochimie Inc. (Canada)

Published in SPIE Proceedings Vol. 5003:
Liquid Crystal Materials, Devices, and Applications IX
Liang-Chy Chien, Editor(s)

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