Jump to main content
Jump to site search

Issue 16, 2019
Previous Article Next Article

Indication of a twist-grain-boundary-twist-bend phase of flexible core bent-shape chiral dimers

Author affiliations

Abstract

The effect of the molecular chirality of chiral additives on the nanostructure of the twist-bend nematic (NTB) liquid crystal phase with ambidextrous chirality and nanoscale pitch due to spontaneous symmetry breaking is studied. It is found that the ambidextrous nanoscale pitch of the NTB phase increases by 50% due to 3% chiral additive, and the chiral transfer among the biphenyl groups disappears in the NTB* phase. Most significantly, a twist-grain boundary (TGB) type phase is found at c > 1.5 wt% chiral additive concentrations below the usual N* phase and above the non-CD active NTB* phase. In such a TGB type phase, the adjacent blocks of pseudo-layers of the nanoscale pitch rotate across the grain boundaries.

Graphical abstract: Indication of a twist-grain-boundary-twist-bend phase of flexible core bent-shape chiral dimers

Back to tab navigation

Supplementary files

Article information


Submitted
15 Nov 2018
Accepted
22 Mar 2019
First published
22 Mar 2019

Soft Matter, 2019,15, 3283-3290
Article type
Communication

Indication of a twist-grain-boundary-twist-bend phase of flexible core bent-shape chiral dimers

M. T. Murachver, A. Nemati, M. Salamończyk, C. Bullock, Z. Sabata, H. Rahmani, T. Vorobiova, A. Izadnegahdar, S. M. Salili, V. Norman, C. Zhu, T. Hegmann, S. N. Sprunt, J. T. Gleeson and A. I. Jakli, Soft Matter, 2019, 15, 3283
DOI: 10.1039/C8SM02338G

Social activity

Search articles by author

Spotlight

Advertisements