Preliminary communication Bi-mesogenic organosiloxane liquid crystal materials exhibiting antiferroelectric phases

W. K. Robinson, P. S. Kloess, C. Carboni, H. J. Coles*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

The first antiferroelectric low molar mass organosiloxane liquid crystal materials are presented. The molecules are bi-mesogens consisting of two chiral mesogenic units attached, via methylene spacers, symmetrically to a siloxane group. Three series of compounds with different laterally substituted halogens on the phenyl ring nearest to the chiral centre have been studied. For siloxane groups containing three silicon atoms all of the materials exhibit antiferroelectric phases over a 60 C temperature range. The tilt angle in the SmC* A is, within experimental uncertainties, independent of temperature and close to 45 degrees for the three series with a spontaneous polarization greater than 110nC cm -2.

Original languageEnglish
Pages (from-to)309-312
Number of pages4
JournalLiquid Crystals
Volume23
Issue number2
DOIs
Publication statusPublished - 1997

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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