Discotic columnar liquid crystals in oligosaccharide derivatives III. Anomeric effects on the thermo-mesomorphic properties of cellobiose octa-alkanoates

Akihiko Takada, N. Ide, T. Fukuda, T. Miyamoto, K. Yamagata, J. Watanabe

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The α-and β-anomers of cellobiose octa-alkanoates with purities higher than about 95 per cent were prepared from β -cellobiose by two simple esterification methods. The carbon number n of the acyl substituents ranged from 7 to 10 in both anomers. Both α -and β -anomers exhibited two types of discotic columnar phases (Dho and Dro), depending on n and temperature, but their phase diagrams were appreciably different. Generally, the α -anomers formed more stable mesophases than the β -anomers. In the Dro phase of the β -anomers, the column axis was tilted from the normal to the ‘disks’, while no such tilting was observed in the other phases.

Original languageEnglish
Pages (from-to)441-448
Number of pages8
JournalLiquid Crystals
Volume19
Issue number4
DOIs
Publication statusPublished - Jan 1 1995

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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