PB12 強誘電性を示す常磁性キラル有機ラジカル液晶の合成と磁場・電場応答性(2004年日本液晶学会討論会)

概要

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Introduction of chirality to paramagnetic liquid crystals may give rise to ferroelectricity and thereby the cooperative effect between the magnetic and electric anisotropy. Although there are a few examples^<1, 2)> of ferroelectric paramagnetic metallomesogens, they have limited utility because of their high viscosity. Therefore, we have investigated several racemic and enantiomerically enriched organic radical mesogens^<3)> which should be less viscous than metallomesogens. Some compounds we have prepared exhibit SmC^* Phases and application of an electric field to these LC in ITO cells has induced ferroelectricity with Ps_<max>=24 nC/cm^2, which is comparable to these of the ferroelectric merallomesogens.
日本液晶学会の論文
2004-09-26