Title

Preparation Of Conjugated Polymeric Columns With A Hexagonal Symmetry From Star-Shaped Supramolecular Liquid Crystals

Keywords

hexagonal columns; hydrogen bonding; photopolymerisation; self-assembly; star-shaped liquid crystals

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 ultraviolet-visible 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. © 2013 Copyright Taylor and Francis Group, LLC.

Publication Date

1-1-2013

Publication Title

Liquid Crystals

Volume

40

Issue

1

Number of Pages

112-119

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1080/02678292.2012.733737

Socpus ID

84872290055 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84872290055

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