Dielectric relaxation in liquid crystals with (CH2) spacers in molecules

The dielectric properties of solutions of the liquid crystals with (CH2) sp acers and nitrile groups in molecules in weakly polar nematic diluent were studied. In the frequency range of a.c. electric field (10(2)-10(8))Hz the dispersion of complex dielectric permitivities epsilon(\) in nematic phase were investigated. From the dielectric spectra of epsilon(\), the relaxatio n frequencies f(R) were obtained for each of the investigated substances. I t was shown that f(R) increases with the (CH2) spacers length of the centra l alkyl chains of molecules.