Abstract
Using solution polycondensation, a new polyazomethine with m-tolylazo side groups (PAz) exhibiting thermotropic liquid crystalline phase was synthesised and its chemical structure was characterised with generally accepted methods. Its phase transition temperatures were detected with both polarising optical microscopy and differential scanning calorimetry. Using dielectric spectroscopy method, both real and imaginary parts of the permittivity were investigated in wide regions of temperature (from -100 degrees C to 170 degrees C) and frequency (from 1Hz to 1MHz). Analysis of frequency dependent permittivity allowed finding three relaxations (alpha, beta(1) and beta(2)) in PAz. beta-relaxations were described with the Arrhenius equation, whereas alpha-relaxation was described with the Vogel-Fulcher-Tammann equation. The alternating current conductivity (ACC) of PAz was studied in the same regions of temperature and frequency. The frequency dependent ACC was described with an exponent power equation. Presentation of ACC as a function of inverse temperature allowed us to describe ACC with the Arrhenius equation.