Study on Electrochemical Copolymerization of Aniline and 3‐Methylthiophene in HMIMBF 4 Ionic Liquid and Its Properties

Electrochemical polymerization of aniline and 3‐methylthiophene has been accomplished in 1‐methylimidazium tetrafluoroborate (HMIMBF 4 ) ionic liquid. Homopolymer and copolymers of aniline and 3‐methylthiophene were obtained successfully. The copolymer was studied by cyclic voltammetry and electrochemical impedance spectroscopy. The formation of copolymer has been confirmed by FT‐IR and UV spectra. The atomic force microscope (AFM) was used for microstructural analysis. Both the homopolymer and the copolymer had the catalytic activity for the hydroquinone.