OPTICAL, ELECTROOPTICAL AND DIELECTRIC PROPERTIES OF LIQUID CRYSTALLINE TRIS(beta-DIKETONATES) YTTERBIUM ADDUCT

被引：1
|
作者：
Polushin, S. G. [1 ]
Dobrun, L. A. [1 ]
Kovshik, A. P. [1 ]
Rogozhin, V. B. [1 ]
Polushina, G. E. [1 ]
Rjumtsev, E. I. [1 ]
Knyazev, A. A. [2 ]
Galyametdinov, Yu. G. [2 ]
机构：
[1] St Petersburg State Univ, 7-9 Universitetskaya Nab, St Petersburg 199034, Russia
[2] Kazan Natl Res Technol Univ, Kazan 420015, Russia
来源：
LIQUID CRYSTALS AND THEIR APPLICATION | 2015年 / 15卷 / 04期
关键词：
refractive index; Kerr effect; dielectric anisotropy; metallomesogen; isotropic phase; nematic phase; smectic phase;
D O I：
10.18083/LCAppl.2015.4.79
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The molecular structure and physical properties of the rare earth metal complexes differ from the structure and properties of known calamitic liquid crystals. In this connection, great interest is the behavior of metallomesogenic complexes in the area near the phase transition mesophase - isotropic phase. Therefore, in the present study we examined the pretransitional properties of the newly obtained metallomesogen - tris(beta-diketonate) ytterbium adduct. The electric birefringence of the isotropic melt and the temperature dependences of the dielectric and optic anisotropies in the mesomorphic state were investigated. The properties above and below the transition temperature nematic - isotropic phase were compared with the use of the Landau - de Gennes theoretical model.
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页码：79 / 87
页数：9
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