Manca, Paola (2010) Elettrosintesi, caratterizzazione e proprietà di politiofeni funzionalizzati con unità chelanti all'azoto. Doctoral Thesis.
Our scientific interest is devoted to electrosynthesis and characterization of thiophenebased
conducting polymers (CP). We are involved in the synthesis of materials where
the backbone is made up of terthiophene and N-chelating moieties (terpyridine or 1,10-
phenanthroline). Herein we report the synthesis of three new molecules, where the two
fragments are linked by an acetylene tether: 4’-(2,2’:5’,2”-terthien-3’-ethynyl)-
2,2’:6’,2”-terpyridine (TAT), 5-(2,2':5',2''-terthien-3'-ethynyl)-1,10-phenanthroline
(TAF5) and 4-(2,2':5',2''-tertien-3'-ethynyl)-1,10-phenanthroline (TAF4). These
molecules were electropolymerized by potentiostatic and potentiodynamic techniques,
and the corresponding polymers were characterized by cyclic voltammetry, UV-Vis
spectroelectrochemistry, IR and SEM. In this way we were able to study redox
behaviour, HOMO-LUMO levels and band gaps, nature of charge carriers and doping
levels, morphology and NGM (nucleation and growth mechanisms).
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