Liquid crystalline behaviour of some azobenzene dyes

David J. Campbell; Leslie Dix; Paul Rostron

doi:10.1016/0143-7208(95)00029-F

Liquid crystalline behaviour of some azobenzene dyes

David J. Campbell, Leslie Dix, Paul Rostron

Applied Sciences Department

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

43 Citations (Scopus)

Abstract

A number of 4-aminoazobenzene dye units have been synthesised and subjected to thermal analysis by differential scanning calorimetry and hot stage optical microscopy. It is observed that liquid crystalline phase behaviour exists for those dyes having a nitro group in the 4-position on the terminal phenyl ring and with a short hydrocarbon 'tail' at the amino site with a terminal alcohol. Other structures in the series were not liquid crystalline. It appears that a highly polar terminal group and short hydrocarbon tail is required to form thermotropic mesophases.

Original language	English
Pages (from-to)	77-83
Journal	Dyes and Pigments
Volume	29
Issue number	1
DOIs	https://doi.org/10.1016/0143-7208(95)00029-F
Publication status	Published - 1995

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10.1016/0143-7208(95)00029-F

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title = "Liquid crystalline behaviour of some azobenzene dyes",

abstract = "A number of 4-aminoazobenzene dye units have been synthesised and subjected to thermal analysis by differential scanning calorimetry and hot stage optical microscopy. It is observed that liquid crystalline phase behaviour exists for those dyes having a nitro group in the 4-position on the terminal phenyl ring and with a short hydrocarbon 'tail' at the amino site with a terminal alcohol. Other structures in the series were not liquid crystalline. It appears that a highly polar terminal group and short hydrocarbon tail is required to form thermotropic mesophases.",

author = "Campbell, {David J.} and Leslie Dix and Paul Rostron",

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AU - Campbell, David J.

AU - Dix, Leslie

AU - Rostron, Paul

PY - 1995

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N2 - A number of 4-aminoazobenzene dye units have been synthesised and subjected to thermal analysis by differential scanning calorimetry and hot stage optical microscopy. It is observed that liquid crystalline phase behaviour exists for those dyes having a nitro group in the 4-position on the terminal phenyl ring and with a short hydrocarbon 'tail' at the amino site with a terminal alcohol. Other structures in the series were not liquid crystalline. It appears that a highly polar terminal group and short hydrocarbon tail is required to form thermotropic mesophases.

AB - A number of 4-aminoazobenzene dye units have been synthesised and subjected to thermal analysis by differential scanning calorimetry and hot stage optical microscopy. It is observed that liquid crystalline phase behaviour exists for those dyes having a nitro group in the 4-position on the terminal phenyl ring and with a short hydrocarbon 'tail' at the amino site with a terminal alcohol. Other structures in the series were not liquid crystalline. It appears that a highly polar terminal group and short hydrocarbon tail is required to form thermotropic mesophases.

U2 - 10.1016/0143-7208(95)00029-F

DO - 10.1016/0143-7208(95)00029-F

M3 - Article

SN - 0143-7208

VL - 29

SP - 77

EP - 83

JO - Dyes and Pigments

JF - Dyes and Pigments

IS - 1

ER -

Liquid crystalline behaviour of some azobenzene dyes

Abstract

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