A Twist-Bend Nematic Phase Driven by Hydrogen Bonding

Suzanne M. Jansze; Alfonso Martinez-Felipe; John M. D. Storey; Antonius T. M. Marcelis; Corrie T. Imrie

doi:10.1002/anie.201409738

A Twist-Bend Nematic Phase Driven by Hydrogen Bonding

Suzanne M. Jansze, Alfonso Martinez-Felipe, John M. D. Storey, Antonius T. M. Marcelis, Corrie T. Imrie^*

^*Corresponding author for this work

Wageningen University & Research

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

148 Citations (Scopus)

Abstract

The liquid crystalline phase behavior of 4-[6-(4-cyanobiphenyl-4-yl)hexyloxy]benzoic acid (CB6OBA) and 4-[5-(4-cyanobiphenyl-4-yloxy)pentyloxy]benzoic acid (CBO5OBA) is described. Both acids show an enantiotropic nematic phase attributed to the formation of supramolecular complexes by hydrogen bonding between the benzoic acid units. In addition, CB6OBA provides the first example of hydrogen bonding driving the formation of the twist-bend nematic phase. The observation of the twist-bend nematic phase for CB6OBA, but not CBO5OBA, is attributed to the more bent molecular shape of the complexes formed by the former, reinforcing the view that shape is a key factor in stabilizing this new phase. Temperature-dependent FTIR spectroscopy reveals differences in hydrogen bonding between the two nematic phases shown by CB6OBA which suggest that the open hydrogen-bonded complexes may play an important role in stabilizing the helical arrangement found in the twist-bend nematic phase.

Original language	English
Pages (from-to)	643-646
Number of pages	4
Journal	Angewandte Chemie International Edition
Volume	54
Issue number	2
Early online date	17 Nov 2014
DOIs	https://doi.org/10.1002/anie.201409738
Publication status	Published - 7 Jan 2015

Bibliographical note

Funded by
Organic Chemistry Division of the Royal Dutch Chemical Society (KNCV)

Keywords

hydrogen bonding
liquid crystal trimers
liquid crystals
supramolecular chemistry
liquid-crystal dimers
oligomers
ether

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10.1002/anie.201409738Licence: Unspecified

Corrie Imrie
- School of Natural & Computing Sciences, Chemistry - Chair in Chemistry
Person: Academic
Alfonso Martinez-Felipe
- Engineering, Engineering - Senior Lecturer
- Centre for Energy Transition
Person: Academic

Cite this

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title = "A Twist-Bend Nematic Phase Driven by Hydrogen Bonding",

abstract = "The liquid crystalline phase behavior of 4-[6-(4-cyanobiphenyl-4-yl)hexyloxy]benzoic acid (CB6OBA) and 4-[5-(4-cyanobiphenyl-4-yloxy)pentyloxy]benzoic acid (CBO5OBA) is described. Both acids show an enantiotropic nematic phase attributed to the formation of supramolecular complexes by hydrogen bonding between the benzoic acid units. In addition, CB6OBA provides the first example of hydrogen bonding driving the formation of the twist-bend nematic phase. The observation of the twist-bend nematic phase for CB6OBA, but not CBO5OBA, is attributed to the more bent molecular shape of the complexes formed by the former, reinforcing the view that shape is a key factor in stabilizing this new phase. Temperature-dependent FTIR spectroscopy reveals differences in hydrogen bonding between the two nematic phases shown by CB6OBA which suggest that the open hydrogen-bonded complexes may play an important role in stabilizing the helical arrangement found in the twist-bend nematic phase.",

keywords = "hydrogen bonding, liquid crystal trimers, liquid crystals, supramolecular chemistry, liquid-crystal dimers , oligomers, ether",

author = "Jansze, {Suzanne M.} and Alfonso Martinez-Felipe and Storey, {John M. D.} and Marcelis, {Antonius T. M.} and Imrie, {Corrie T.}",

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T1 - A Twist-Bend Nematic Phase Driven by Hydrogen Bonding

AU - Jansze, Suzanne M.

AU - Martinez-Felipe, Alfonso

AU - Storey, John M. D.

AU - Marcelis, Antonius T. M.

AU - Imrie, Corrie T.

N1 - Funded by Organic Chemistry Division of the Royal Dutch Chemical Society (KNCV)

PY - 2015/1/7

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N2 - The liquid crystalline phase behavior of 4-[6-(4-cyanobiphenyl-4-yl)hexyloxy]benzoic acid (CB6OBA) and 4-[5-(4-cyanobiphenyl-4-yloxy)pentyloxy]benzoic acid (CBO5OBA) is described. Both acids show an enantiotropic nematic phase attributed to the formation of supramolecular complexes by hydrogen bonding between the benzoic acid units. In addition, CB6OBA provides the first example of hydrogen bonding driving the formation of the twist-bend nematic phase. The observation of the twist-bend nematic phase for CB6OBA, but not CBO5OBA, is attributed to the more bent molecular shape of the complexes formed by the former, reinforcing the view that shape is a key factor in stabilizing this new phase. Temperature-dependent FTIR spectroscopy reveals differences in hydrogen bonding between the two nematic phases shown by CB6OBA which suggest that the open hydrogen-bonded complexes may play an important role in stabilizing the helical arrangement found in the twist-bend nematic phase.

AB - The liquid crystalline phase behavior of 4-[6-(4-cyanobiphenyl-4-yl)hexyloxy]benzoic acid (CB6OBA) and 4-[5-(4-cyanobiphenyl-4-yloxy)pentyloxy]benzoic acid (CBO5OBA) is described. Both acids show an enantiotropic nematic phase attributed to the formation of supramolecular complexes by hydrogen bonding between the benzoic acid units. In addition, CB6OBA provides the first example of hydrogen bonding driving the formation of the twist-bend nematic phase. The observation of the twist-bend nematic phase for CB6OBA, but not CBO5OBA, is attributed to the more bent molecular shape of the complexes formed by the former, reinforcing the view that shape is a key factor in stabilizing this new phase. Temperature-dependent FTIR spectroscopy reveals differences in hydrogen bonding between the two nematic phases shown by CB6OBA which suggest that the open hydrogen-bonded complexes may play an important role in stabilizing the helical arrangement found in the twist-bend nematic phase.

KW - hydrogen bonding

KW - liquid crystal trimers

KW - liquid crystals

KW - supramolecular chemistry

KW - liquid-crystal dimers

KW - oligomers

KW - ether

U2 - 10.1002/anie.201409738

DO - 10.1002/anie.201409738

M3 - Article

SN - 1433-7851

VL - 54

SP - 643

EP - 646

JO - Angewandte Chemie International Edition

JF - Angewandte Chemie International Edition

IS - 2

ER -

A Twist-Bend Nematic Phase Driven by Hydrogen Bonding

Abstract

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Keywords

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Corrie Imrie

Alfonso Martinez-Felipe

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