Non-symmetric liquid crystal dimer containing a carbohydrate-based moiety

Andrew G Cook, James L Wardell, Nicholas J Brooks, John M Seddon, Alfonso Martinez-Felipe, Corrie T Imrie

Research output: Contribution to journalArticle

33 Citations (Scopus)
6 Downloads (Pure)

Abstract

The synthesis and characterisation of a novel non-symmetric liquid crystal dimer, 1-[3-O-(D-glucopyranos-3-yl)]-8-[(4-methoxyazobenzene-4'-oxy)] octane is reported. This exhibits glassy behaviour and a highly interdigitated smectic A phase in which the aromatic and alkyl structural fragments overlap. Variable temperature infrared spectroscopy reveals that the strength and extent of hydrogen bonding within the system does not show a marked change at either the glass transition or at the smectic A-isotropic transition. This observation indicates that the smectic A-isotropic transition is driven by changes in the van der Waals interactions between the molecules while hydrogen bonded aggregates persist into the isotropic phase. (C) 2012 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)78-83
Number of pages6
JournalCarbohydrate Research
Volume360
Early online date3 Aug 2012
DOIs
Publication statusPublished - 1 Oct 2012

Keywords

  • liquid crystal dimer
  • sugar
  • smectic A phase
  • variable temperature FTIR
  • hydrogen bonding
  • glassy behaviour
  • sugar glasses
  • phase
  • oligomers
  • behavior
  • mesomorphism
  • intercalate
  • residues
  • polymers
  • monomers
  • glucosyl

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