Almasri, Moayad, Foot, Peter J.S., Brown, John W. and Clipson, Jacqueline A. (2018) Synthesis and properties of an N-substituted polypyrrole with liquid crystalline moieties. Polymers and Polymer Composites, 26(4), pp. 283-288. ISSN (print) 0967-3911
Abstract
The synthesis and characterisation of two pyrrole monomers substituted at the N-position with a liquid crystal group are reported. Polymerisation of one of these compounds produced a soluble liquid crystalline semiconducting polymer. The side-chain of the polymer had a flexible spacer of nine methylene units, terminated by a mesogenic cyanobiphenyl group. The new compounds were chemically characterised and were found by hot-stage polarised optical microscopy to exhibit liquid crystal mesophases. The polymer was lightly doped p-type by exposure to iodine vapour, and its electrical conductivity was measured. The polymer synthesis and doping/dedoping processes were also briefly studied by cyclic voltammetry.
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