Thermodynamic and Optical Properties of Mixtures Based on Mesogenic Dysprosium (III) Complex and Nematic Liquid Crystal

Abstract

In this regard, a practically important task is to obtain lanthanide-containing liquid crystal systems exhibiting nematic mesomorphism in a wide temperature range. Therefore, in this work, we have demonstrated the possibility of creating homogeneous nematic mixtures based on the synthesized paramagnetic liquid crystal 5,5'-diheptadecyl-2,2'-bipyridine dysprosium (III) complex with liquid crystal 1-(4-fluorophenyl)-3-(4-(4-propylcyclohexyl)phe-nyl)propane-1,3-dione. The latest possesses wide mesophase range and low crystallization temperature. The phase diagrams of the studied mixtures were constructed using the data of polarizing optical microscopy and differential scanning calorimetry. Their thermodynamic and optical characteristics (main values of refractive indices, optical anisotropy, degree of orientational order) have been studied.