Liquid crystalline behaviour of some azobenzene dyes

David J. Campbell, Leslie Dix, Paul Rostron

Research output: Contribution to journalArticlepeer-review

40 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 languageEnglish
Pages (from-to)77-83
JournalDyes and Pigments
Volume29
Issue number1
DOIs
Publication statusPublished - 1995

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