Abstract
The dielectric investigation has a great importance in liquid crystal studies as a supportive method to DSC for a complete characterization of liquid crystals as well as in the electronic applications. In this study, the synthesis, mesomorphic characterization and dielectric properties of a new phenylbenzoate-based three-ring calamitic liquid crystal which composed of ester linking groups, (S)-3,7-dimethyloctyloxy chiral unit at one of terminals and n-octyloxy chain at the other end of the molecule, have been reported. The new calamitic liquid crystal 4-[4-((S)-3,7-dimethyloctyloxy)phenoxy)carbonyl]phenyl 4-(n-octyloxy)benzoate (DPCPB) has been characterized using 1H, 13C-NMR and MS-QTOF. The liquid crystalline behavior of the target compound has been investigated by differential scanning calorimetry and optical polarizing microscopy. DPCPB exhibits an enantiotropic non-tilted smectic mesophase in a wide temperature range. The real and imaginary dielectric constant, conductivity mechanism, impedance and dielectric relaxation mechanism of DPCPB have been investigated depending on frequency at different temperatures.
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This research has been supported by Yildiz Technical University Scientific Research Projects Coordination Department with the Projects No.: 2015-01-02-YL04.
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Ahlatcıoğlu Özerol, E., Ocak, H., Bilgin Eran, B. et al. The synthesis and dielectric properties of a new phenylbenzoate-based calamitic liquid crystal. J IRAN CHEM SOC 18, 225–232 (2021). https://doi.org/10.1007/s13738-020-02021-x
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DOI: https://doi.org/10.1007/s13738-020-02021-x