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Proceedings Paper

Conformation and chirality in liquid crystals
Author(s): John L. West; Lei Zhao
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Paper Abstract

High helical twisting powerchiral additives are required for an expanding variety of liquid crystal displays and devices. Molecular conformation plays a critical role in determining the helical twisting power, HTP, of chiral additives. We studied additives based on an isosorbide benzoate ester core. Molecular modeling revealed two low energy states with very different conformations for this core The ultra-violet absorption and NMR spectra show two stable isosorbide conformers These spectra reveal how the relative populations of these two conformations change with temperature and how this is related to the helical twisting power. Conformation changes can explain many of the observed anomalous responses of HPT to temperature.

Paper Details

Date Published: 12 September 2013
PDF: 6 pages
Proc. SPIE 8828, Liquid Crystals XVII, 88280D (12 September 2013); doi: 10.1117/12.2024022
Show Author Affiliations
John L. West, Kent State Univ. (United States)
Lei Zhao, Kent State Univ. (United States)


Published in SPIE Proceedings Vol. 8828:
Liquid Crystals XVII
Iam Choon Khoo, Editor(s)

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