Dimorphism SmA-B2 in bent-core mesogens with perfluorinated terminal chains

被引：43

作者：

Kovalenko, L

Weissflog, W

Grande, S

Diele, S

Pelzl, G

Wirth, I

机构：

[1] Univ Halle Wittenberg, Inst Phys Chem, D-06108 Halle, Germany

[2] Univ Leipzig, Fak Phys & Geowissensch, D-04103 Leipzig, Germany

来源：

LIQUID CRYSTALS | 2000年 / 27卷 / 05期

关键词：

D O I：

10.1080/026782900202552

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Several banana-shaped liquid crystal materials with perfluorinated terminal chains have been synthesized. A dimorphism SmA-B-2 was proved by X-ray studies and electro-optical measurements. The unusual ratio d/L (d = layer spacing, L = molecular length) and the unexpected behaviour of the layer spacing at the phase transition SmA --> B-2 can be interpreted by a change of the packing of the bent molecules.

引用

页码：683 / 687

页数：5

共 15 条

[11]

2-D

[12] Structural and electro-optical investigations of the smectic phase of chlorine-substituted banana-shaped compounds [J].