Orientational Order in Liquid Crystal Complexes Based on Lanthanides


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Abstract

In this study, we have for the first time determined the degree of an orientational order S for a series of liquid-crystal complexes based on lanthanides (Eu+3, Gd+3, Tb+3, Dy+3) with the same ligand composition in the temperature range of existence of the nematic phase by using experimental refractometry results. We have also found an even-odd alternative S as number of protons in the ions complexing agent has consecutively increased. The obtained values of S have been compared with the corresponding degrees of order of the calamite organic liquid crystals.

About the authors

L. A. Dobrun

St. Petersburg State University

Author for correspondence.
Email: l.dobrun@spbu.ru
Russian Federation, St. Petersburg, 199034

A. P. Kovshik

St. Petersburg State University

Email: l.dobrun@spbu.ru
Russian Federation, St. Petersburg, 199034

E. I. Ryumtsev

St. Petersburg State University

Email: l.dobrun@spbu.ru
Russian Federation, St. Petersburg, 199034

A. A. Kalinkin

St. Petersburg State University

Email: l.dobrun@spbu.ru
Russian Federation, St. Petersburg, 199034

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