| Abstract
| - Organic electronic devices comprising arrays of organic field effect transistors (OFETs) areexpected to create a range of novel applications for which the ability to be fabricated in large areas, onflexible substrates, with nonconventional shapes, and at low cost are key enabling factors. To improvethe electrical performance of such devices, new solution processable organic semiconductors are requiredwith high charge carrier mobilities and environmental stability. This work describes the molecular designof a p-type charge transport liquid crystalline polymer, in an attempt to control the factors responsiblefor both mobility and stability. Molecules were designed that were able to exhibit closely packed, π stackedmorphologies, which can result in efficient intermolecular charge hopping and hence high mobility.Molecular manipulation of the conjugated π electron system was required to optimize the HOMO energylevel, to both resist oxidation and be able to readily accept holes from a source electrode.
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