화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals, Vol.511, 1789-1796, 2009
Orientational Behavior of Ionic Liquid Crystal Polymers and Their Nonionic Family
Multilayered Langmuir-Blodgett (LB) films were prepared from the monolayers of an ionic liquid crystalline azo-polymer (IP-4) and a nonionic liquid crystalline azo-polymer (NP-4). The multilayer structures in the LB films were completely disturbed by UV light irradiation. However, the periodic layer orderings in the LB films were rebuilt upon a subsequent visible light irradiation. Although NP-4 exhibits a nematic phase in the bulk state at room temperature, the consequent double layered structure with a homeotropic alignment in the LB film of NP-4 was very similar to the smectic layered structures of IP-4.