1. Open Access Kent State
  2. Ferroelectric-Chiral-Antiferroelectric-Racemic Liquid Crystal Phase Transition of Bent-Shape Molecules
Author(s)
Abstract
Detailed dielectric, polarization current, electro-optical, and textural observations are reported on an asymmetric banana-shaped compound 1,3-biphenylene-bis[4-(3-fluoro-4-octyloxyphenyliminomethyl)benzoate]. The material possesses a chiral-ferroelectric-racemic-antiferroelectric phase transition. Our studies reveal that the higher temperature ferroelectric phase has a polar double-tilted smectic structure, where both the molecular plane and the long axis are tilted with respect to the layer normal. Accordingly, it has a chiral triclinic structure with an out-of-plane polarization component. The lower temperature phase has a monoclinic symmetry, which is higher than that of the higher temperature phase. To our knowledge, among liquid crystals such situations were previously observed only in reentrant phases.
Format
Article
Publication Date
2002-08-01
Publication Title
Physical Review E
Volume
66
Issue
2
Subject
Community
Chemical Physics Interdisciplinary Program
Comments
Copyright 2002 American Physical Society. Available on publisher's site at http://dx.doi.org/10.1103/PhysRevE.66.021706.
Permalink https://oaks.kent.edu/cpippubs/60
Rauch, S., Bault, P., Sawade, H., Heppke, G., Nair, G., & Jakli, A. (2002). Ferroelectric-Chiral-Antiferroelectric-Racemic Liquid Crystal Phase Transition of Bent-Shape Molecules. Physical Review E. https://oaks.kent.edu/node/1210
Rauch, S., P. Bault, Hans Sawade, G. Heppke, Geetha Nair, and Antal Jakli. 2002. “Ferroelectric-Chiral-Antiferroelectric-Racemic Liquid Crystal Phase Transition of Bent-Shape Molecules”. Physical Review E. https://oaks.kent.edu/node/1210.
Rauch, S., P. Bault, H. Sawade, G. Heppke, G. Nair, and A. Jakli. Ferroelectric-Chiral-Antiferroelectric-Racemic Liquid Crystal Phase Transition of Bent-Shape Molecules. Physical Review E, 1 Aug. 2002, https://oaks.kent.edu/node/1210.