Unusual properties of a bent-core liquid-crystalline fluid

Verena Gortz; Christopher Southern; Nicholas W. Roberts; Helen F. Gleeson; John W. Goodby

doi:10.1039/b808283a

Unusual properties of a bent-core liquid-crystalline fluid

Verena Gortz, Christopher Southern, Nicholas W. Roberts, Helen F. Gleeson, John W. Goodby

Chemistry

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

Abstract

In our investigations of a family of achiral bent-core bis-(phenyl)oxadiazole derivatives, we observed some unusual properties of the nematic phase. These include evidence of segregation into domains of opposite handedness and the formation of clusters, nematic phase biaxiality, and a strongly kinetically governed phase behaviour, which leads to the display of unique filament structures at the onset of new order. We suggest that the combination of a deviant calamitic molecular shape with a considerable transverse dipole leads to an unusual strength and combination of molecular interactions, and as a consequence these nematic materials need to be considered as fluctuating and dynamically changing, multi-hierarchical fluids.

Original language	English
Pages (from-to)	463-471
Number of pages	9
Journal	Soft Matter
Volume	5
Issue number	2
DOIs	https://doi.org/10.1039/b808283a
Publication status	Published - 2009

Keywords

ACHIRAL MOLECULES
NEMATIC LIQUID
PHASE
TRANSITION
LATTICE

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10.1039/b808283a

http://pubs.rsc.org/en/Content/ArticleLanding/2009/SM/b808283a

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title = "Unusual properties of a bent-core liquid-crystalline fluid",

abstract = "In our investigations of a family of achiral bent-core bis-(phenyl)oxadiazole derivatives, we observed some unusual properties of the nematic phase. These include evidence of segregation into domains of opposite handedness and the formation of clusters, nematic phase biaxiality, and a strongly kinetically governed phase behaviour, which leads to the display of unique filament structures at the onset of new order. We suggest that the combination of a deviant calamitic molecular shape with a considerable transverse dipole leads to an unusual strength and combination of molecular interactions, and as a consequence these nematic materials need to be considered as fluctuating and dynamically changing, multi-hierarchical fluids.",

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journal = "Soft Matter",

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publisher = "The Royal Society of Chemistry",

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T1 - Unusual properties of a bent-core liquid-crystalline fluid

AU - Gortz, Verena

AU - Southern, Christopher

AU - Roberts, Nicholas W.

AU - Gleeson, Helen F.

AU - Goodby, John W.

PY - 2009

Y1 - 2009

N2 - In our investigations of a family of achiral bent-core bis-(phenyl)oxadiazole derivatives, we observed some unusual properties of the nematic phase. These include evidence of segregation into domains of opposite handedness and the formation of clusters, nematic phase biaxiality, and a strongly kinetically governed phase behaviour, which leads to the display of unique filament structures at the onset of new order. We suggest that the combination of a deviant calamitic molecular shape with a considerable transverse dipole leads to an unusual strength and combination of molecular interactions, and as a consequence these nematic materials need to be considered as fluctuating and dynamically changing, multi-hierarchical fluids.

AB - In our investigations of a family of achiral bent-core bis-(phenyl)oxadiazole derivatives, we observed some unusual properties of the nematic phase. These include evidence of segregation into domains of opposite handedness and the formation of clusters, nematic phase biaxiality, and a strongly kinetically governed phase behaviour, which leads to the display of unique filament structures at the onset of new order. We suggest that the combination of a deviant calamitic molecular shape with a considerable transverse dipole leads to an unusual strength and combination of molecular interactions, and as a consequence these nematic materials need to be considered as fluctuating and dynamically changing, multi-hierarchical fluids.

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KW - NEMATIC LIQUID

KW - PHASE

KW - TRANSITION

KW - LATTICE

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DO - 10.1039/b808283a

M3 - Article

SN - 1744-683X

VL - 5

SP - 463

EP - 471

JO - Soft Matter

JF - Soft Matter

IS - 2

ER -

Unusual properties of a bent-core liquid-crystalline fluid

Abstract

Keywords

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Biaxial nematic liquid crystals

Liquid crystals at various wavelengths of light

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Unusual properties of a bent-core liquid-crystalline fluid

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Biaxial nematic liquid crystals

Liquid crystals at various wavelengths of light

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