Thermal analysis of binary liquid crystalline mixtures: SSystem of bent core and calamitic molecules

A. Bubnov, Věra Hamplová, M. Kašpar, Anikó Vajda, Maja Stojanović, Dusanka Ž Obadović, N. Éber, Katalin Fodor-Csorba

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Two series of binary mixtures composed of bent shaped and rod like molecules are reported. The first star shaped bent core molecules were synthesized and used as a component of binary mixtures. The chiral rod like compounds having commensurable length with the arms of the bent core compounds have been chosen for these mixtures. The resulted compositions show various thermotropic liquid crystalline phases that are characteristic to both types of liquid crystalline materials. In case of mixing the rod like molecules to the bent core compound the B2, B7 and induced B1 phases have been observed. While using the star-shaped bent core and chiral rod like compounds in mixture, the paraelectric smectic A, ferroelectric smectic C* and orthogonal hexatic smectic B phases were preferred. The appearing mesophases were investigated by differential scanning calorimetry, polarizing optical microscopy and X-ray diffraction methods.

Original languageEnglish
Pages (from-to)431-441
Number of pages11
JournalJournal of Thermal Analysis and Calorimetry
Volume90
Issue number2
DOIs
Publication statusPublished - Nov 1 2007

Keywords

  • Bent core molecules
  • Binary mixtures
  • DSC
  • Phase diagram
  • Phase transition
  • Rod like molecules
  • Star-shaped bent core molecules

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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