Metallo-responsive liquid crystalline monomers and polymers

Blayne M. McKenzie, Rudy J. Wojtecki, Kelly A. Burke, Cuiyu Zhang, Antal Jákli, Patrick T. Mather, Stuart J. Rowan

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

A series of liquid crystalline ligand-containing monomers with chemo-responsive properties has been prepared and studied. These molecules are functionalized derivatives of the 2,6-bisbenzimidazolylpyridine (Bip) ligand. Tailoring the size of the aromatic core and the length of two pairs of alkyl substituents allows the preparation of mesogens with a range of tunable thermal liquid crystalline transitions and phases. The binding of lanthanide- and/or transition metal salts to the ligand containing mesogens results in a transition from a liquid crystalline to an isotropic state. Acyclic diene metathesis of the monomers yielded either oligomers or polymers, dictated by whether the alkene is either terminal or nonterminal, respectively. Both oligomers and polymers exhibit enantiotropic liquid crystalline behavior and become isotropic in the presence of metal ions.

Original languageEnglish (US)
Pages (from-to)3525-3533
Number of pages9
JournalChemistry of Materials
Volume23
Issue number15
DOIs
StatePublished - Aug 9 2011

Keywords

  • ADMET
  • lanthanides
  • liquid crystal
  • stimuli-responsive
  • supramolecular

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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