2B06 キラル液晶基を側鎖に有するポリメタフェニレン誘導体の合成と性質(化学・材料)

概要

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We synthesized ferroelectric liquid crystalline (FLC) polythienylene, poly (p-phenylene) and poly (m-phenylene) derivatives by introducing fluorine-containing chiral LC substituents into polymers as side chain to achieve quick response for electric field. Measurements of differential scanning calorimeter, polarizing optical microscope, and X-ray diffraction suggested that the polymers have chiral smectic C (Sc^*) phase which is indispensable for generation of FLC. These polymers showed drastic increases of dielectric constant in the Sc^* temperature range this is a typical FLC behavior based on Curie-Weiss rule. Response times of the polymers were evaluated to be ca. one second, that is 20〜30 times faster than those of ordinary LC polymers.
日本液晶学会の論文
2002-10-09