Substituent Effect on Para‐Substituted n‐phenylpyrrole Monomers and Their Polyheterocyclic Conductors

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Abstract
The electrochemical behaviour of a variety of para‐substituted n‐phenylpyrrole monomers and their corresponding polymers was analyzed. The electron‐attractive or electron‐repulsive nature of each para group substituent was perceived in the pyrrole unit through the phenyl ring and manifested in their values. Good linear correlations with Hammett σ+ constants were obtained for both the monomer values and the electroactive polymer values.