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The synthesis and properties of host materials with fluoro substituents in the core and in a terminal chain for high dielectric biaxiality FLC mixtures

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The synthesis and properties of host materials with fluoro substituents in the core and in a terminal chain for high dielectric biaxiality FLC mixtures. / Goodby, J W ; Hird, M ; Jones, J C ; Lewis, R A ; Sage, I C ; Toyne, K J .

In: IEEE Transaction of Ultrasonics Ferroelectrics and Frequency Control, Vol. 243, No. 1-4, 2000, p. 19-26.

Research output: Contribution to journalArticlepeer-review

Harvard

Goodby, JW, Hird, M, Jones, JC, Lewis, RA, Sage, IC & Toyne, KJ 2000, 'The synthesis and properties of host materials with fluoro substituents in the core and in a terminal chain for high dielectric biaxiality FLC mixtures', IEEE Transaction of Ultrasonics Ferroelectrics and Frequency Control, vol. 243, no. 1-4, pp. 19-26.

APA

Goodby, J. W., Hird, M., Jones, J. C., Lewis, R. A., Sage, I. C., & Toyne, K. J. (2000). The synthesis and properties of host materials with fluoro substituents in the core and in a terminal chain for high dielectric biaxiality FLC mixtures. IEEE Transaction of Ultrasonics Ferroelectrics and Frequency Control, 243(1-4), 19-26.

Vancouver

Goodby JW, Hird M, Jones JC, Lewis RA, Sage IC, Toyne KJ. The synthesis and properties of host materials with fluoro substituents in the core and in a terminal chain for high dielectric biaxiality FLC mixtures. IEEE Transaction of Ultrasonics Ferroelectrics and Frequency Control. 2000;243(1-4):19-26.

Author

Goodby, J W ; Hird, M ; Jones, J C ; Lewis, R A ; Sage, I C ; Toyne, K J . / The synthesis and properties of host materials with fluoro substituents in the core and in a terminal chain for high dielectric biaxiality FLC mixtures. In: IEEE Transaction of Ultrasonics Ferroelectrics and Frequency Control. 2000 ; Vol. 243, No. 1-4. pp. 19-26.

Bibtex - Download

@article{90c4df3c472846ed844d5fa5099824f8,
title = "The synthesis and properties of host materials with fluoro substituents in the core and in a terminal chain for high dielectric biaxiality FLC mixtures",
abstract = "Various liquid crystalline terphenyls with fluoro substituents strategically located in the core and the terminal chains have been synthesised and evaluated for a range of physical properties. The synthetic methods involved fluorinations to introduce fluoro substituents into the alpha and beta positions of the terminal chains, and low temperature metallations were used to prepare arylboronic acids which were employed in selective palladium-catalysed cross-coupling reactions to generate the final liquid crystals. The mesogens with fluoro substituents in the beta position of an alkyl chain tend to generate the S-C alt phase, which is an exciting development for this class of compound, whereas compounds with two fluoro substituents in the alpha position tend to exhibit the conventional S-C phase. The materials have been evaluated for a range of physical properties and enable the formulation of ferroelectric mixtures with a high dielectric biaxiality which is very important in tau V minimum driving schemes.",
keywords = "liquid crystals, synthesis, smectic C, smectic C alt, LIQUID-CRYSTALS, DISPLAYS",
author = "Goodby, {J W} and M Hird and Jones, {J C} and Lewis, {R A} and Sage, {I C} and Toyne, {K J}",
year = "2000",
language = "English",
volume = "243",
pages = "19--26",
journal = "IEEE Transaction of Ultrasonics Ferroelectrics and Frequency Control",
issn = "0885-3010",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "1-4",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - The synthesis and properties of host materials with fluoro substituents in the core and in a terminal chain for high dielectric biaxiality FLC mixtures

AU - Goodby, J W

AU - Hird, M

AU - Jones, J C

AU - Lewis, R A

AU - Sage, I C

AU - Toyne, K J

PY - 2000

Y1 - 2000

N2 - Various liquid crystalline terphenyls with fluoro substituents strategically located in the core and the terminal chains have been synthesised and evaluated for a range of physical properties. The synthetic methods involved fluorinations to introduce fluoro substituents into the alpha and beta positions of the terminal chains, and low temperature metallations were used to prepare arylboronic acids which were employed in selective palladium-catalysed cross-coupling reactions to generate the final liquid crystals. The mesogens with fluoro substituents in the beta position of an alkyl chain tend to generate the S-C alt phase, which is an exciting development for this class of compound, whereas compounds with two fluoro substituents in the alpha position tend to exhibit the conventional S-C phase. The materials have been evaluated for a range of physical properties and enable the formulation of ferroelectric mixtures with a high dielectric biaxiality which is very important in tau V minimum driving schemes.

AB - Various liquid crystalline terphenyls with fluoro substituents strategically located in the core and the terminal chains have been synthesised and evaluated for a range of physical properties. The synthetic methods involved fluorinations to introduce fluoro substituents into the alpha and beta positions of the terminal chains, and low temperature metallations were used to prepare arylboronic acids which were employed in selective palladium-catalysed cross-coupling reactions to generate the final liquid crystals. The mesogens with fluoro substituents in the beta position of an alkyl chain tend to generate the S-C alt phase, which is an exciting development for this class of compound, whereas compounds with two fluoro substituents in the alpha position tend to exhibit the conventional S-C phase. The materials have been evaluated for a range of physical properties and enable the formulation of ferroelectric mixtures with a high dielectric biaxiality which is very important in tau V minimum driving schemes.

KW - liquid crystals

KW - synthesis

KW - smectic C

KW - smectic C alt

KW - LIQUID-CRYSTALS

KW - DISPLAYS

M3 - Article

VL - 243

SP - 19

EP - 26

JO - IEEE Transaction of Ultrasonics Ferroelectrics and Frequency Control

JF - IEEE Transaction of Ultrasonics Ferroelectrics and Frequency Control

SN - 0885-3010

IS - 1-4

ER -