Spontaneous chirality through mixing achiral components: a twist-bend nematic phase driven by hydrogen-bonding between unlike components

The spontaneous formation of a chiral phase via molecular recognition in a system consisting of achiral components is reported. Specifically, the liquid crystalline behaviour of two molecular complexes assembled by hydrogen bonding between a stilbazole-based template and alkoxybenzoic acids has been...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2018, Vol.54 (27), p.3383-3386
Main Authors: Walker, R, Pociecha, D, Abberley, J P, Martinez-Felipe, A, Paterson, D A, Forsyth, E, Lawrence, G B, Henderson, P A, Storey, J M D, Gorecka, E, Imrie, C T
Format: Article
Language:English
Subjects:
Chemical bonds
Chirality
Crystal structure
Crystallinity
Hydrogen bonding
Liquid crystals
Nematic
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Summary:The spontaneous formation of a chiral phase via molecular recognition in a system consisting of achiral components is reported. Specifically, the liquid crystalline behaviour of two molecular complexes assembled by hydrogen bonding between a stilbazole-based template and alkoxybenzoic acids has been characterised. The complexes exhibit the heliconical twist-bend nematic phase (NTB) over a broad temperature range despite the hydrogen-bond acceptor not being liquid crystalline and the donor exhibiting the conventional achiral nematic phase.
ISSN:1359-7345
1364-548X
DOI:10.1039/c8cc00525g