Synthesis and characterization of PPDMB poly (pyrrole-co-3,5-dimethoxybenzaldehyde) and PPMB poly (pyrrole-co-2-methoxybenzaldehyde): a new copolymer for solar cells

In particular, heterocyclic aromatic polymers are an important class because they possess chemical properties and electrical stability in both oxidized (doped) and neutral (undoped) states. In this paper, we present a detailed study of the synthesis and characterization of new conductive polymers derived from poly (pyrrole-co-3,5-Dimethoxybenzaldehyde], and poly (pyrrole-co-2-Methoxybenzaldehyde), by polycondensation of conjugated amine heterocycles and 3,5-dimethoxybenzaldehyde and 2-methoxybenzaldehyde, in chloroform in the presence of exchanged maghnite as a catalyst. The latter has shown good efficiency in copolymerizing several vinyl and heterocyclic monomers, due to its good thermal and chemical stability. These polymers are soluble in all organic solvents, and they present a good condidates for the development of photovoltaic cells. In order to improve the productivity of the polymerization, we particularly studied the influence of catalyst quantity, time, temperature, solvent and molar ratio on the efficiency. The conjugated copolymers were characterized using RMN, UV–visible, FTIR and cyclic voltammetry.