Structural characterization of the new polymorphic mesophases formed by bent-core molecules

被引：44

作者：

Eremin, A

Wirth, I

Diele, S

Pelzl, G

Schmalfuss, H

Kresse, H

Nádasi, H

Fodor-Csorba, K

Gács-Baitz, E

Weissflog, W

机构：

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

[2] Hungarian Acad Sci, Res Inst Solid State Phys & Opt, Budapest, Hungary

[3] Hungarian Acad Sci, Chem Res Ctr, Inst Chem, H-1525 Budapest, Hungary

来源：

LIQUID CRYSTALS | 2002年 / 29卷 / 06期

关键词：

D O I：

10.1080/02678290210136328

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new achiral banana-shaped five-ring 2-methylresorcinol derivative fluorinated on the outer rings has been synthesized. This compound exhibits four antiferroelectric smectic phases characteristic for bent-core molecules (B-2, B'(2), B"(2), B-5). In addition, a highly viscous solid-like phase has been detected which also shows electro-optical switching. This is the first switchable highly ordered B phase. The characterization of the mesophases was made by X-ray diffraction, electro-optical measurements and dielectric spectroscopy.

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页码：775 / 782

页数：8

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