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Title: Shape and electrical properties of mixed aromatic-heterocyclic polymers
Author: Brooks, P. R.
Awarding Body: University of Wales Swansea
Current Institution: Swansea University
Date of Award: 2000
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The aim of this thesis was to systematically investigate the relationship between the shape and conductivity of electroactive polymers. A series of thienylenenaphthylene and bisthienylenenaphthylene oligomers were modelled to determine their likely shape. The preparations of thienylenenaphthylene polymers and oligomers were carried out with some limited success and the preparations of bisthienylenenaphthylene polymers were also carried out. Upon analysis of the thienylenenaphthylene and bisthienylene-naphthylenes polymers it was determined that planarity was the most significant factor of the polymer's shape on it's electrical properties, with linearity the second most important factor. Chapter 1 presents a brief review of electroactive polymers concentrating on polythiophenes, polyarylenes and their copolymers. Chapter 2 presents a brief review of palladium catalysis and organocadmium reagents. Chapter 3 describes the semi empirical and molecular mechanical modelling carried out on the fragments and on the symmetrical thienylenenaphthylene oligomers. Chapter 4 describes: the preparation of dihalonaphthalenes, the test coupling reactions of 2-thienylcadmium chloride, the preparation of symmetrical bisthienyl-naphthalenes and the interpretation of their NMR spectra. The photochemistry of two bisthienylnaphthalene isomers is discussed. Chapter 5 describes the preparation and analysis of thienylenenaphthylene polymers and oligomers and the modelling, preparation and analysis of the bisthienylene-naphthylene polymers.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available