Synthesis, electrochemical and electroluminescent properties of oligothiophene-based conjugated polymers

The paper deals with a new conjugated polymer having the possibility to for m a complex with transition metals. The conjugated backbone is constituted by the alternation of regioregular alkylated oligothiophene of variable siz e and of 2,2'-bipyridine as the chelating unit. Electrochemical studies wer e conducted on both the non-metalated and Ru(II) complex forms together wit h the in-situ conductance measurement showing that p- and n-doping occur. T he non-metalated form was showed to exhibit electroluminescent properties. (C) 2000 Elsevier Science S.A. All rights reserved.