Correlation between the molecular chirality index and the spontaneous polarisation in series of smectic C-star liquid crystals

S. Becke, S. Haller, M.A. Osipov, F. Giesselmann

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A correlation between spontaneous polarisation and the chirality index of the constituent molecules, multiplied by the molecular transverse dipole, has been considered for five series of ferroelectric smectic C* liquid crystals. A good correlation has been found within each series, and it has been shown that the scaled chirality index may be used to estimate the spontaneous polarisation in a series of smectic C* mesogens with small systematic changes of the molecular structure. At the same time one cannot expect any significant correlation between the polarisation and the chirality index for smectic C* materials of sufficiently different structure because the spontaneous polarisation may be significantly effected by some details of the molecule's structure including the orientation of the transverse dipole with respect to the primary short molecular axis.
Original languageEnglish
Pages (from-to)573-582
Number of pages9
JournalMolecular Physics
Volume108
Issue number5
DOIs
Publication statusPublished - Mar 2010

Keywords

  • ferroelectric liquid crystals
  • chirality index
  • molecular structure

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