Facile Polymerization Method for Poly(3,4-ethylenedioxythiophene) and Related Polymers Using Iodine Vapour
A novel iodine vapour promoted polymerization method of 2,5-dibromo-3,4-ethylenedioxythiophene, 2,5-diiodo-3,4-ethylenedioxythiophene and their derivatives at room temperature without using any solvent has been developed. The resulting polymers are conducting and electroactive in nature. After dedoped, the neutral polymers were analyzed by elemental composition, and soluble polymers were characterized by 1H NMR and gel permeation chromatography analysis. A systematic study of cyclic voltammetry, UV-vis absorption and spectroelectrochemistry of these polymers obtained by iodine vapour polymerization has been reported and compared with the previously reported solid state polymerization and electrochemically obtained polymers where applicable.