New antiferroelectric liquid crystalline materials containing a keto group and two lactate groups |
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| Authors: | Věra Hamplová Alexej Bubnov Corresponding author Miroslav Ka?par Vladimíra Novotná Yveta Lhotáková Milada Glogarová |
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| Institution: | Institute of Physics , Academy of Sciences of the Czech Republic , Na Slovance 2, 182 21 Prague, Czech Republic |
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| Abstract: | New chiral liquid crystalline materials containing a keto group and two lactate units attached to the mesogenic core have been synthesized and studied. All the new compounds show the paraelectric SmA, ferroelectric SmC* and antiferroelectric SmC*A phases each over rather broad temperature ranges. The properties of the phases were characterized by DSC, electro-optical and dielectric studies. The spontaneous polarization, tilt angle, helical pitch, and switching times were determined for the polar phases. |
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