Interpretation of unusual textures in the B2 phase of a liquid crystal composed of bent-core molecules

Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Jul;68(1 Pt 1):011707. doi: 10.1103/PhysRevE.68.011707. Epub 2003 Jul 24.

Abstract

A liquid crystal material of bent-core molecules is investigated by means of optical texture observations, x-ray measurements, and miscibility studies. While the x-ray and miscibility data point towards a B2 phase, the texture is however unusual, showing optical isotropy and segregation in two domains with opposite gyrations. It is shown that the texture can be interpreted successfully in terms of a smectic-C(A)P(A) structure in small domains with random orientations. The optical activity data are also explained semiquantitatively.

MeSH terms

  • Biophysical Phenomena
  • Biophysics
  • Light
  • Models, Chemical
  • Models, Theoretical
  • Polymers / chemistry*
  • X-Rays

Substances

  • Polymers
  • liquid crystal polymer