Effect of terminal chain length on the helical twisting power in achiral bent-core molecules doped in a cholesteric liquid crystal

Kim, Byeong-Cheon; Walker, Martin; Jo, Seong-Yong; Wilson, Mark R.; Takezoe, Hideo; Choi, Suk-Won

doi:10.1039/c7ra11589j

Effect of terminal chain length on the helical twisting power in achiral bent-core molecules doped in a cholesteric liquid crystal

Kim, Byeong-Cheon; Walker, Martin; Jo, Seong-Yong; Wilson, Mark R.; Takezoe, Hideo; Choi, Suk-Won

Authors

Byeong-Cheon Kim

Martin Walker

Seong-Yong Jo

Professor Mark Wilson mark.wilson@durham.ac.uk
Professor

Hideo Takezoe

Suk-Won Choi

Abstract

We prepared a homologous series of achiral bent-core (BC) liquid crystals with different terminal alkoxy chain lengths, n (BC-n), and evaluated the helical twisting power (HTP) of the BC-n doped in a cholesteric liquid crystal. The BC-n molecules with longer terminal chains showed larger HTPs. To interpret this striking phenomenon, a stochastic dynamics simulation was performed to determine the distribution of the chirality order parameters (χ) for BC molecules with n = 8–16. The distribution of χ for each simulated conformation varied with n, and the variation tendency was different for molecules with n < 12 and n > 12 despite the linear relationship between HTP and n in the experiment.

Citation

Kim, B., Walker, M., Jo, S., Wilson, M. R., Takezoe, H., & Choi, S. (2018). Effect of terminal chain length on the helical twisting power in achiral bent-core molecules doped in a cholesteric liquid crystal. RSC Advances, 8(3), 1292-1295. https://doi.org/10.1039/c7ra11589j

Journal Article Type	Article
Acceptance Date	Dec 22, 2017
Online Publication Date	Jan 3, 2018
Publication Date	Jan 3, 2018
Deposit Date	Jan 8, 2018
Publicly Available Date	Jan 9, 2018
Journal	RSC Advances
Publisher	Royal Society of Chemistry
Peer Reviewed	Peer Reviewed
Volume	8
Issue	3
Pages	1292-1295
DOI	https://doi.org/10.1039/c7ra11589j

Files

Published Journal Article (575 Kb)
PDF

Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Open Access Article. Published on 03 January 2018. Downloaded on 09/01/2018 10:22:32. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.