Liquid-crystalline supramolecular polymers formed through complementary nucleobase-pair interactions

Sona Sivakova, Jian Wu, Cheryl J. Campo, Patrick T. Mather, Stuart J. Rowan

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50 Citations (Scopus)

Abstract

We report how the placement of nucleobase units, thymine, or N 6-(4-methoxybenzoyl)adenine, onto the ends of a mesogenic core, bis-4-alkoxy-substituted bis(phenylethynyl)-benzene, affects the properties of these materials. We show that addition of these bulky polar groups significantly reduces the range of liquid-crystalline behavior of these compounds. However, mixing two complementary nucleobase-containing AA- and BB-type monomer units together does result in the formation of stable, thermotropic liquid-crystalline (LC) phases. Hydrogen bonding is shown to play an important role in the formation of these LC phases, consistent with the formation of oligomeric or polymeric hydrogenbonded aggregates. X-ray analyses of these mixed materials are consistent with the formation of smectic C phases.

Original languageEnglish
Pages (from-to)446-456
Number of pages11
JournalChemistry - A European Journal
Volume12
Issue number2
DOIs
Publication statusPublished - 2005 Dec 23
Externally publishedYes

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Keywords

  • Crystals
  • Hydrogen bonds
  • Liquid
  • Nucleobases
  • Polymers
  • Supramolecular chemistry

ASJC Scopus subject areas

  • Chemistry(all)

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