U. Geissler et al., POLY(OLIGO(1-METHYLPYRROLE))S AND THEIR SQUARAINE-DERIVATIVES - AN ELECTROCHEMICAL AND SPECTROELECTROCHEMICAL INVESTIGATION, Synthetic metals, 84(1-3), 1997, pp. 171-172
1-Methylpyrrole and bis(1-methylpyrrole) were polymerized in 0.1 M (C4
H9)N4PF6/CH2Cl2 and characterized by means of cyclic voltammetry and s
pectroelectrochemical techniques. Pyrrole oligomers were also condense
d with squaric acid yielding low-bandgap polymers.