SmA-SmC-B2 polymorphism in an achiral cyano substituted banana-shaped mesogen

A new achiral five-ring banana-shaped mesogen is presented which has a cyano 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 sw...

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Published inLiquid crystals Vol. 27; no. 5; pp. 677 - 681
Main Authors Weissflog, W., Kovalenko, L., Wirth, I., Diele, S., Pelzl, G., Schmalfuss, H., Kresse, H.
Format Journal Article
LanguageEnglish
Japanese
Published Taylor & Francis Group 01.05.2000
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Summary:A new achiral five-ring banana-shaped mesogen is presented which has a cyano 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 switching behaviour; the spontaneous polarization was found to be 330 nCcm -2 .
ISSN:0267-8292
1366-5855
DOI:10.1080/026782900202543