Intrinsically Chiral Twist-Bend Nematogens: Interplay of Molecular and Structural Chirality in the NTB Phase

Rebecca Walker; Damian Pociecha; Miroslaw Salamonczyk; John M D Storey; Ewa Gorecka; Corrie T Imrie

doi:10.1002/cphc.202200807

Intrinsically Chiral Twist-Bend Nematogens: Interplay of Molecular and Structural Chirality in the NTB Phase

Rebecca Walker^* (Corresponding Author), Damian Pociecha, Miroslaw Salamonczyk, John M D Storey, Ewa Gorecka, Corrie T Imrie

^*Corresponding author for this work

Chemistry

University of Warsaw

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

4 Citations (Scopus)

Abstract

Non-symmetric lactate-based chiral liquid crystal dimers containing an odd-membered spacer are shown to exhibit a chiral twist-bend nematic phase which is stable on cooling to room temperature. A comparison of racemic and optically pure materials reveals that the pitch length in the N*TB phase is not influenced by molecular chirality, whereas the nematic-twist-bend nematic transition temperature is increased.

Original language	English
Article number	e202200807
Journal	ChemPhysChem
Volume	24
Issue number	6
Early online date	15 Dec 2022
DOIs	https://doi.org/10.1002/cphc.202200807 https://doi.org/10.1002/cphc.202300105
Publication status	Published - 14 Mar 2023

Bibliographical note

Funding Information:
The authors would like to thank Prof Michal Kohout from the University of Chemistry and Technology in Prague (Czech Republic) for performing chiral HPLC to determine enantiomeric purity of the reported materials. D. P. gratefully thanks the National Science Centre (Poland) under the grant no. 2021/43/B/ST5/00240. This research used resources of the Advanced Light Source (beamline 11.0.1.2), which is a DOE Office of Science User Facility under contract no. DE‐AC02‐05CH11231.

Data Availability Statement

Research data are not shared.

Supporting information for this article is available on the WWW under https://doi.org/10.1002/cphc.202200807

Keywords

Chirality
Liquid Crystals
Twist-bend nematic phase
Resonant soft X-ray scattering

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Cite this

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title = "Intrinsically Chiral Twist-Bend Nematogens: Interplay of Molecular and Structural Chirality in the NTB Phase",

abstract = "Non-symmetric lactate-based chiral liquid crystal dimers containing an odd-membered spacer are shown to exhibit a chiral twist-bend nematic phase which is stable on cooling to room temperature. A comparison of racemic and optically pure materials reveals that the pitch length in the N*TB phase is not influenced by molecular chirality, whereas the nematic-twist-bend nematic transition temperature is increased.",

keywords = "Chirality, Liquid Crystals, Twist-bend nematic phase, Resonant soft X-ray scattering",

author = "Rebecca Walker and Damian Pociecha and Miroslaw Salamonczyk and Storey, {John M D} and Ewa Gorecka and Imrie, {Corrie T}",

note = "Funding Information: The authors would like to thank Prof Michal Kohout from the University of Chemistry and Technology in Prague (Czech Republic) for performing chiral HPLC to determine enantiomeric purity of the reported materials. D. P. gratefully thanks the National Science Centre (Poland) under the grant no. 2021/43/B/ST5/00240. This research used resources of the Advanced Light Source (beamline 11.0.1.2), which is a DOE Office of Science User Facility under contract no. DE‐AC02‐05CH11231. ",

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AU - Storey, John M D

AU - Gorecka, Ewa

AU - Imrie, Corrie T

N1 - Funding Information: The authors would like to thank Prof Michal Kohout from the University of Chemistry and Technology in Prague (Czech Republic) for performing chiral HPLC to determine enantiomeric purity of the reported materials. D. P. gratefully thanks the National Science Centre (Poland) under the grant no. 2021/43/B/ST5/00240. This research used resources of the Advanced Light Source (beamline 11.0.1.2), which is a DOE Office of Science User Facility under contract no. DE‐AC02‐05CH11231.

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N2 - Non-symmetric lactate-based chiral liquid crystal dimers containing an odd-membered spacer are shown to exhibit a chiral twist-bend nematic phase which is stable on cooling to room temperature. A comparison of racemic and optically pure materials reveals that the pitch length in the N*TB phase is not influenced by molecular chirality, whereas the nematic-twist-bend nematic transition temperature is increased.

AB - Non-symmetric lactate-based chiral liquid crystal dimers containing an odd-membered spacer are shown to exhibit a chiral twist-bend nematic phase which is stable on cooling to room temperature. A comparison of racemic and optically pure materials reveals that the pitch length in the N*TB phase is not influenced by molecular chirality, whereas the nematic-twist-bend nematic transition temperature is increased.

KW - Chirality

KW - Liquid Crystals

KW - Twist-bend nematic phase

KW - Resonant soft X-ray scattering

U2 - 10.1002/cphc.202200807

DO - 10.1002/cphc.202200807

M3 - Article

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Intrinsically Chiral Twist-Bend Nematogens: Interplay of Molecular and Structural Chirality in the NTB Phase

Abstract

Bibliographical note

Data Availability Statement

Keywords

Access to Document

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