Abstract
A relationship between dielectric constant ε or dielectric loss tan δ and structure was studied for optically active polyamides. The samples of these polyamides exhibited a chiral smectic phase due to their asymmetric structures and strong hydrogen bonds. The dielectric parameters were significantly influenced by temperature, but were hardly affected by frequency in the high-frequency region. The hindered rotations of the mesogens, which affect the polarization, depended on the structures and the phase transitions.
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