SmA-SmC-B-2 polymorphism in an achiral cyano substituted banana-shaped mesogen

Authors
Weissflog, W Kovalenko, L Wirth, I Diele, S Pelzl, G Schmalfuss, H Kresse, H
Citation
W. Weissflog et al., SmA-SmC-B-2 polymorphism in an achiral cyano substituted banana-shaped mesogen, LIQ CRYST, 27(5), 2000, pp. 677-681
Citations number
20
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
LIQUID CRYSTALS
ISSN journal
02678292 → ACNP
Volume
27
Issue
5
Year of publication
2000
Pages
677 - 681
Database
ISI
SICI code
0267-8292(200005)27:5<677:SPIAAC>2.0.ZU;2-7
Abstract
A new achiral five-ring banana-shaped mesogen is presented which has a cyan o substituent in the 4-position of the central core. Microscopical, X-ray, dielectric and electro-optical investigations give evidence for the unusual phase sequence B-2, SmC, SmA. The B-2 phase shows an antiferroelectric swi tching behaviour; the spontaneous polarization was found to be 330 nC cm(-2 ).