The even–odd effect in the dependence of optical anisotropy on the number of protons in complexing agent ions of liquid-crystal coordination compounds of lanthanides

• Published in: Optics and spectroscopy Vol. 122; no. 5; pp. 813 - 815
• Main Authors: Dobrun, L. A., Kovshik, A. P., Ryumtsev, E. I., Galyametdinov, Yu. G., Knyazev, A. A.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-05-2017; Springer Nature B.V
• Subjects: Anisotropy; Coordination compounds; Gadolinium; Lanthanides; Lasers; Liquid crystals; Nematic crystals; Optical Devices; Optics; Photonics; Physical Optics; Physics; Physics and Astronomy; Protons
• ISSN: 0030-400X; 1562-6911
• DOI: 10.1134/S0030400X1705006X

The values of optical anisotropy of two series of thermotropic nematic liquid crystalline complexes based on the ions Eu
+3
, Gd
+3
, Tb
+3
, and Dy
+3
have been determined. Even–odd alternation of optical anisotropy with an increasing number of protons in ions of lanthanides has been observed. It is established that, in the considered series of lanthanidomesogens, optical anisotropy is more sensitive to changes in the ligand structure of complexes than to the variation of the complexing agent.