Controlling spontaneous chirality in achiral materials: liquid crystal oligomers and the heliconical twist-bend nematic phase

M. M. Majewska; E. Forsyth; D. Pociecha; C. Wang; J. M. D. Storey; C. T. Imrie; E. Gorecka

doi:10.1039/d1cc07012f

Controlling spontaneous chirality in achiral materials: liquid crystal oligomers and the heliconical twist-bend nematic phase

M. M. Majewska^*
, E. Forsyth
, D. Pociecha
, C. Wang
, J. M. D. Storey
, C. T. Imrie
, E. Gorecka

^*Corresponding author for this work

Chemistry

University of Warsaw
LBNL, United States Department of Energy (DOE), Lawrence Berkeley National Laboratory, Adv Light Source

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

9 Downloads (Pure)

Abstract

Liquid crystal oligomers, namely dimers, trimers and tetramers, consisting of cyanobiphenyl and benzylideneaniline-based mesogenic units connected by either linear or bent alkoxy or alkyl spacers are reported. These materials, although built from achiral molecules, show the spontaneously chiral heliconical twist-bend nematic (N-TB) phase. We report the relationships between the shape of the oligomer, and the N-TB phase stability, the temperature dependence of the helical pitch length and tilt angle, birefringence, and elastic constants.

Original language	English
Pages (from-to)	5285-5288
Number of pages	4
Journal	Chemical Communications
Volume	58
Issue number	34
Early online date	10 Apr 2022
DOIs	https://doi.org/10.1039/d1cc07012f
Publication status	Published - 26 Apr 2022

Funding

The work was financed by the National Science Centre (Poland) under the grant no. 2016/22/A/ST5/00319.

Keywords

SYMMETRY-BREAKING
TRIMERS
DIMERS

Access to Document

10.1039/d1cc07012fLicence: CC BY-NC

Majewska_et_al_Controlling_spontaneous_Chemical_communications_vor
This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence https://creativecommons.org/licenses/by-nc/3.0/
Final published version, 2.63 MBLicence: CC BY-NC

Cite this

@article{33005dbf62104b2ab5db10cd047ba308,

title = "Controlling spontaneous chirality in achiral materials: liquid crystal oligomers and the heliconical twist-bend nematic phase",

abstract = "Liquid crystal oligomers, namely dimers, trimers and tetramers, consisting of cyanobiphenyl and benzylideneaniline-based mesogenic units connected by either linear or bent alkoxy or alkyl spacers are reported. These materials, although built from achiral molecules, show the spontaneously chiral heliconical twist-bend nematic (N-TB) phase. We report the relationships between the shape of the oligomer, and the N-TB phase stability, the temperature dependence of the helical pitch length and tilt angle, birefringence, and elastic constants.",

keywords = "SYMMETRY-BREAKING, TRIMERS, DIMERS",

author = "Majewska, \{M. M.\} and E. Forsyth and D. Pociecha and C. Wang and Storey, \{J. M. D.\} and Imrie, \{C. T.\} and E. Gorecka",

year = "2022",

month = apr,

day = "26",

doi = "10.1039/d1cc07012f",

language = "English",

volume = "58",

pages = "5285--5288",

journal = "Chemical Communications",

issn = "1359-7345",

publisher = "Royal Society of Chemistry",

number = "34",

}

TY - JOUR

T1 - Controlling spontaneous chirality in achiral materials

T2 - liquid crystal oligomers and the heliconical twist-bend nematic phase

AU - Majewska, M. M.

AU - Forsyth, E.

AU - Pociecha, D.

AU - Wang, C.

AU - Storey, J. M. D.

AU - Imrie, C. T.

AU - Gorecka, E.

PY - 2022/4/26

Y1 - 2022/4/26

N2 - Liquid crystal oligomers, namely dimers, trimers and tetramers, consisting of cyanobiphenyl and benzylideneaniline-based mesogenic units connected by either linear or bent alkoxy or alkyl spacers are reported. These materials, although built from achiral molecules, show the spontaneously chiral heliconical twist-bend nematic (N-TB) phase. We report the relationships between the shape of the oligomer, and the N-TB phase stability, the temperature dependence of the helical pitch length and tilt angle, birefringence, and elastic constants.

AB - Liquid crystal oligomers, namely dimers, trimers and tetramers, consisting of cyanobiphenyl and benzylideneaniline-based mesogenic units connected by either linear or bent alkoxy or alkyl spacers are reported. These materials, although built from achiral molecules, show the spontaneously chiral heliconical twist-bend nematic (N-TB) phase. We report the relationships between the shape of the oligomer, and the N-TB phase stability, the temperature dependence of the helical pitch length and tilt angle, birefringence, and elastic constants.

KW - SYMMETRY-BREAKING

KW - TRIMERS

KW - DIMERS

U2 - 10.1039/d1cc07012f

DO - 10.1039/d1cc07012f

M3 - Article

SN - 1359-7345

VL - 58

SP - 5285

EP - 5288

JO - Chemical Communications

JF - Chemical Communications

IS - 34

ER -

Controlling spontaneous chirality in achiral materials: liquid crystal oligomers and the heliconical twist-bend nematic phase

Abstract

Funding

Keywords

Access to Document

Fingerprint

Cite this