MONOMER TAILORING TO CONTROL THE REDOX POTENTIALS OF CONDUCTIVE POLYHETEROCYCLES

Ring fusion of two terminal polymerogenic heterocycles (pyrrole or thiophene) onto a central [(hetero)aromatic] or carbocyclic ring strongly modifies, relative to pyrrole or thiophene, both the peak potentials of the monomer and the redox potential of the polymer. Conductivity, peak potentials and redox potentials of materials obtained by polymerization of pyrrolic and/or thiophene systems fused onto central benzene, cyclopentadiene, thiophene and pyrrole rings are reported. The approach can be exploited to beneficially design new polyheteroaromatics endowed with highly valued properties (good conductivities and environmental stability).