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- Title
An Optically Isotropic Antiferroelectric Liquid Crystal (OI-AFLC) Display Mode Operating over a Wide Temperature Range using Ternary Bent-Core Liquid Crystal Mixtures.
- Authors
Bergquist, Leah; Zhang, Cuiyu; Ribeiro de Almeida, Roberta R.; PellegrENe, Brittany; Salamonczyk, Miroslaw; Kim, Matthew; Hwang, Jung ‐ Im; Kim, Kyeong ‐ Jin; Lee, Joun ‐ Ho; Jákli, Antal; Hegmann, TorstEN
- Abstract
We report on the synthesis and characterization of bent-core liquid crystal (LC) compounds and the preparation of mixtures that provide an optically isotropic antiferroelectric (OI-AFLC) liquid crystal display mode over a very wide temperature interval and well below room temperature. From the collection of compounds synthesized during this study, we recognized that several ternary mixtures displayed a modulated SmCaPA phase down to below −40 °C and up to about 100 °C on both heating and cooling, as well as optical tilt angles in the transformed state of approximately 45° (optically isotropic state). The materials were fully characterized and their liquid crystal as well as electro-optical properties analyzed by polarized optical microscopy, differential scanning calorimetry, synchrotron X-ray diffraction, dielectric spectroscopy, and electro-optical tests.
- Subjects
ANTIFERROELECTRIC liquid crystals; LIQUID crystal displays; TEMPERATURE effect; MIXTURES; LIQUID crystal synthesis
- Publication
ChemistryOpen, 2017, Vol 6, Issue 2, p196
- ISSN
2191-1363
- Publication type
Article
- DOI
10.1002/open.201600138