Dimer Biphenyl Liquid Crystals with Trisiloxane-Containing Spacers

R. Achten; A. Koudijs; M. Giesbers; A.T.M. Marcelis; E.J.R. Sudhölter

doi:10.1080/15421400701734098

Dimer Biphenyl Liquid Crystals with Trisiloxane-Containing Spacers

R. Achten, A. Koudijs, M. Giesbers, A.T.M. Marcelis, E.J.R. Sudhölter

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

2 Citations (Scopus)

Abstract

Dimeric biphenyl liquid crystals with trisiloxane containing spacers were studied. Both the tail lengths and the spacer lengths to a central hexamethyltrisiloxane group were varied. In most cases a SmC-phase was found with an anticlinic interlayer relation. One of the compounds appears to have a SmA-phase, which could be a de Vries SmA-phase. A few other compounds show liquid crystalline polymorphism. X-ray diffraction experiments show that the smectic layers are strongly interdigitated. The thickness of the layers is mainly dependent on the length of the spacers. The length of the terminal alkyl chains hardly influences the smectic layer thickness.

Original language	English
Pages (from-to)	169-176
Journal	Molecular Crystals and Liquid Crystals
Volume	477
Issue number	1
DOIs	https://doi.org/10.1080/15421400701734098
Publication status	Published - 2007

Keywords

mesogenic fluorinated organosiloxanes
polar order
phase
chirality
systems
series

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abstract = "Dimeric biphenyl liquid crystals with trisiloxane containing spacers were studied. Both the tail lengths and the spacer lengths to a central hexamethyltrisiloxane group were varied. In most cases a SmC-phase was found with an anticlinic interlayer relation. One of the compounds appears to have a SmA-phase, which could be a de Vries SmA-phase. A few other compounds show liquid crystalline polymorphism. X-ray diffraction experiments show that the smectic layers are strongly interdigitated. The thickness of the layers is mainly dependent on the length of the spacers. The length of the terminal alkyl chains hardly influences the smectic layer thickness.",

keywords = "mesogenic fluorinated organosiloxanes, polar order, phase, chirality, systems, series",

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T1 - Dimer Biphenyl Liquid Crystals with Trisiloxane-Containing Spacers

AU - Achten, R.

AU - Koudijs, A.

AU - Giesbers, M.

AU - Marcelis, A.T.M.

AU - Sudhölter, E.J.R.

PY - 2007

Y1 - 2007

N2 - Dimeric biphenyl liquid crystals with trisiloxane containing spacers were studied. Both the tail lengths and the spacer lengths to a central hexamethyltrisiloxane group were varied. In most cases a SmC-phase was found with an anticlinic interlayer relation. One of the compounds appears to have a SmA-phase, which could be a de Vries SmA-phase. A few other compounds show liquid crystalline polymorphism. X-ray diffraction experiments show that the smectic layers are strongly interdigitated. The thickness of the layers is mainly dependent on the length of the spacers. The length of the terminal alkyl chains hardly influences the smectic layer thickness.

AB - Dimeric biphenyl liquid crystals with trisiloxane containing spacers were studied. Both the tail lengths and the spacer lengths to a central hexamethyltrisiloxane group were varied. In most cases a SmC-phase was found with an anticlinic interlayer relation. One of the compounds appears to have a SmA-phase, which could be a de Vries SmA-phase. A few other compounds show liquid crystalline polymorphism. X-ray diffraction experiments show that the smectic layers are strongly interdigitated. The thickness of the layers is mainly dependent on the length of the spacers. The length of the terminal alkyl chains hardly influences the smectic layer thickness.

KW - mesogenic fluorinated organosiloxanes

KW - polar order

KW - phase

KW - chirality

KW - systems

KW - series

U2 - 10.1080/15421400701734098

DO - 10.1080/15421400701734098

M3 - Article

SN - 1542-1406

VL - 477

SP - 169

EP - 176

JO - Molecular Crystals and Liquid Crystals

JF - Molecular Crystals and Liquid Crystals

IS - 1

ER -

Dimer Biphenyl Liquid Crystals with Trisiloxane-Containing Spacers

Abstract

Keywords

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