Synthesis and electrochemical behaviour of new polythiophenes branched with sulfonamides for solid phase synthesis

Abstract

The synthesis of thiophenes 3-substituted by arylsulfonamide groups is described. Their electropolymerization and the characteristics of the polymers thus formed were studied, showing the importance of the nature of the spacer intercalated between the thiophene unit and the electroactive cleavable aromatic function under electron transfer. The presence of an oxygen atom in an appropriate position in the chain appears to dramatically control the electrochemical stability and the electroactivity of the polymer.