Induction of mesophases through the complexation between benzoic acids with lateral groups and polyamides containing a 2,6-diaminopyridine moiety

Osamu Ihata, Hideyuki Yokota, Kiyoshi Kanie, Seiji Ujiie, Takashi Kato

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Supramolecular liquid crystalline polymeric complexes have been prepared by the complexation of 4-alkyloxybenzoic acid derivatives and polyamides containing a 2,6-diaminopyridine moiety. 4-Alkyloxybenzoic acids substituted by methoxy, methyl, and nitro groups at the 3-position are used for the complexation. These polymeric complexes behave as single component liquid crystalline polymers and exhibit stable and enantiotropic mesophases. In contrast, simple 4-alkyloxybenzoic acids having no substituent at the 3-position, do not form stable complexes with the polymers. For low molecular mass complexes derived from 2,6-bis(acylamino)pyridine and 4-alkyloxybenzoic acid derivatives, substituent effects are different from those for the polymeric system. In these cases, mesomorphic behaviour is observed only for the complexes based on the simple 4-alkyloxybenzoic acid and 4-alkyloxy-3-methylbenzoic acid.

Original languageEnglish
Pages (from-to)69-74
Number of pages6
JournalLiquid Crystals
Volume27
Issue number1
DOIs
Publication statusPublished - 2000 Jan 1
Externally publishedYes

ASJC Scopus subject areas

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

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