Preparation of conjugated polymeric columns with a hexagonal symmetry from star-shaped supramolecular liquid crystals

    Authors

    J. H. Lee; H. J. Lee; S. J. Lee; J. Jang; S. H. Yoo;J. Y. Jho

    Comments

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    Abbreviated Journal Title

    Eur. J. Pharmacol.

    Keywords

    hexagonal columns; hydrogen bonding; self-assembly; star-shaped liquid; crystals; photopolymerisation; DIACETYLENIC GROUPS; PHOTOPOLYMERIZATION; ORDER; TRIPHENYLENE; ALKOXYSTILBAZOLES; METALLOMESOGENS; DERIVATIVES; BEHAVIOR; PHASE; FILMS; Chemistry, Multidisciplinary; Crystallography; Materials Science, ; Multidisciplinary

    Abstract

    New conjugated polymeric columns with a hexagonal symmetry were prepared via topochemical polymerisation of star-shaped supramolecular liquid crystals formed by hydrogen bonding between a phloroglucinol core and pyridine derivatives containing a diacetylenic group in the alkyl chain. The mesomorphic properties of the supramolecular monomer and its photopolymerisation behaviour were investigated. The supramolecular liquid crystal exhibited a rectangular columnar mesophase. Photopolymerisation of supramolecular monomer along the column axis in the liquid crystalline state provided well-ordered conjugated polydiacetylenic columns with a two-dimensional hexagonal symmetry. Fourier transform infrared and ultravioletvisible spectroscopy affirmed that conjugated polydiacetylenes were produced by 1,4-polymerisation of the supramolecular monomer along the column axis. X-ray diffraction analysis showed that a two-dimensional columnar order in the supramolecular monomer was maintained after photopolymerisation, and that the resulting polydiacetylene had a hexagonal array of conjugated columns. Our controlled methodology provides a new route to conjugated polymeric columns with highly ordered structures by self-assembly and polymerisation of star-shaped supramolecular liquid crystals.

    Journal Title

    Liquid Crystals

    Volume

    Liq. Cryst.

    Issue/Number

    1

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    112

    Last Page

    119

    WOS Identifier

    40

    ISSN

    0267-8292

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