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

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

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.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1039/C7RA11589J
Publisher 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.
Date accepted:22 December 2017
Date deposited:09 January 2018
Date of first online publication:03 January 2018
Date first made open access:09 January 2018

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