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Highly Regioregular Polythiophenes for Magneto-Optical Applications
Final rept. 15 Feb 2007-15 Feb 2010
KATHOLIEKE UNIV LEUVEN (BELGIUM)
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The synthetic research efforts focused on three main topics 1 a profound, detailed study of the polymerization of regioregular, head-to-tail coupled polyalkoxythiophenes HTP3AOTs, 2 the development of processable, high-molecular weight polydithienopyrroles PDTPs, 3 the construction of alternating copolymers of cyclopentadithiophene and thiophenes PCPDTaltT, and 4 the development of soluble, highly ordered polythienothiophenes PTTs. All these polymers are highly conjugated, thiophene-based polymers, with large variation in their bandgaps. In view of the important role of regioregularity in the Faraday rotation observed in thin films of polythiophenes an important part of the research effort was focused on the development of synthetic methodologies and a search of new polymers. Additionally the physico-chemical properties of several polythiophenes were investigated, with some remarkable results. Also the magnetic properties of several polythiophenes were investigated, as well as new polythiophenes synthesized. Final work involved in search for new synthetic pathways for new polythiophenes and the initiation of computer calculationssimulations to identify polymer conformations active in magnetic properties of several polythiophenes. Initial attempts were made to develop a new model based upon previous results to describe magnetic effects in organic media.
APPROVED FOR PUBLIC RELEASE