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Issue 5, 2020
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Controlling spontaneous mirror symmetry breaking in cubic liquid crystalline phases by the cycloaliphatic ring size

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Abstract

Rod-like molecules combining a fork-like triple chain end and a cycloaliphatic apex are introduced as a new design concept for materials with broad ranges of bicontinuous cubic (Cubbi) phases. By ring expansion from n = 4 to 12 a sequence of three Cubbi phases is observed; the achiral double gyroid la[3 with combining macron]d phase, a chiral “Im3m” phase and an achiral re-entrant la[3 with combining macron]d phase. The chiral “Im3m” phase is formed if the helical twist between the molecules along the networks is in the range of 8.6°–9.5°, either for the individual compounds or their mixtures.

Graphical abstract: Controlling spontaneous mirror symmetry breaking in cubic liquid crystalline phases by the cycloaliphatic ring size

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Article information


Submitted
26 Nov 2019
Accepted
09 Dec 2019
First published
10 Dec 2019

Chem. Commun., 2020,56, 711-714
Article type
Communication

Controlling spontaneous mirror symmetry breaking in cubic liquid crystalline phases by the cycloaliphatic ring size

T. Reppe, C. Dressel, S. Poppe and C. Tschierske, Chem. Commun., 2020, 56, 711
DOI: 10.1039/C9CC09206D

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