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

doi:10.1021/cm2011617

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

Department of Biomedical & Chemical Engineering

Research output: Contribution to journal › Article › peer-review

35 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 language	English (US)
Pages (from-to)	3525-3533
Number of pages	9
Journal	Chemistry of Materials
Volume	23
Issue number	15
DOIs	https://doi.org/10.1021/cm2011617
State	Published - Aug 9 2011

Keywords

ADMET
lanthanides
liquid crystal
stimuli-responsive
supramolecular

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Materials Chemistry

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10.1021/cm2011617

Cite this

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title = "Metallo-responsive liquid crystalline monomers and polymers",

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.",

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T1 - Metallo-responsive liquid crystalline monomers and polymers

AU - McKenzie, Blayne M.

AU - Wojtecki, Rudy J.

AU - Burke, Kelly A.

AU - Zhang, Cuiyu

AU - Jákli, Antal

AU - Mather, Patrick T.

AU - Rowan, Stuart J.

PY - 2011/8/9

Y1 - 2011/8/9

N2 - 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.

AB - 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.

KW - ADMET

KW - lanthanides

KW - liquid crystal

KW - stimuli-responsive

KW - supramolecular

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JF - Chemistry of Materials

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Metallo-responsive liquid crystalline monomers and polymers

Abstract

Keywords

ASJC Scopus subject areas

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