Thienylpyrrole azo dyes: synthesis, solvatochromic and electrochemical properties

The synthesis and the evaluation of solvatochromic and electrochemical properties of new donor–acceptor-substituted thienylpyrrole azo dyes are described. These derivatives exhibit dramatic changes in both their electronic and redox properties in comparison with thienylpyrroles . In agreement with the solvatochromic and electrochemical studies of push–pull derivatives the new compounds prepared, may find application in the manufacture of new materials with notable non-linear optical properties.