2C13 液晶性を有するポリチエニレン及びポリチエニレンビニレン誘導体の磁場配向化による電気的・光学的異方性の発現

概要

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Recently, novel conjugated polymers, liquid crystalline (LC) polythienylene derivatives, were synthesized by introducing LC substituents into the 3-position of thiophene rings, to generate anisotropies in both electrical and optical properties. The polymers showed enantiotropic smectic A or B phase and fluorescence. Here, we report the magnefically forced alignment of these polymers. X-ray diffraction measurements demonstrated that the LC side chains and the main chains are oriented parallel and perpendicular to the direction of magnetic field, respectively, producing a macroscopic alignment of the polymers. The high alignment of the polymers was also confirmed from dichroism in infrared spectra. The polymers showed dichroic fluorescence with ratios of 1.5〜3.5.
日本液晶学会の論文
1999-09-28