Spectroscopic investigations of structural transformations in liquid crystals

被引：0
|
作者：
Pogorelov, VY [1 ]
Lizengevich, OI [1 ]
Savransky, LI [1 ]
Bukalo, VP [1 ]
机构：
[1] Natl Taras Shevchenko Univ, Dept Phys, UA-03022 Kiev, Ukraine
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2002年 / 375卷
关键词：
liquid crystals; molecular spectroscopy; band shape; phase transitions;
D O I：
10.1080/10587250210583
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Paper is devoted to Raman scattering study of structural transformations in frozen liquid crystal ABT in the process of its heating. Temperature region was from T=173 K up to T=343 K. A specific mechanism of inhomogeneous broadening in mesogenic systems is proposed. The mechanism consists in parametric action of valence angles deformations of molecules on high frequency vibrations. In its turn the molecular deformations depend on media structure. As a result the shape of parametrically dependent high frequency vibrational bands indirectly reacts to structural transformations in media.
引用
收藏
页码：233 / 241
页数：9
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