Synthesis and anodic oxidation of a dimer EDOT–dicyanomethylenefluorene and a trimer EDOT–dicyanomethylenefluorene–EDOT: towards mixed polymers with very low bandgap

The electrosynthesis of new mixed polymers, starting with the anodic oxidation of a dimer and a trimer of 3,4-ethylenedioxythiophene and dicyanomethylenefluorene is described together which the syntheses of the parent compounds. The resulting low bandgap polymers show different electrochemical behaviour, which is discussed.