KAIST, Electrochemistry

Hochun Lee, Haesik Yang, and Juhyoun Kwak, "Effects of dopant anions and N-substituents on the electrochemical behavior of polypyrrole films in propylene carbonate solution," Electrochem. Commun., 4 (2), 128 - 133 (2002.02.__.)

The electrochemical properties of poly(N-ethylpyrrole) (PEPy) and poly(N-methylpyrrole) (PMPy) films in propylene carbonate (PC) solution, where ion transport is anion-specific, has been investigated using the cyclic electrochemical quartz crystal microbalance (EQCM) technique and electrochemical impedance techniques. The type of dopant anion (PF6- vs. ClO4-) used for the film preparation and the N-substituents (ethyl vs. methyl) have profound effects on the solvent transport behavior, charge capacity, and ionic resistance of the films.

Keywords : Poly(N-ethylpyrrole); Poly(N-methylpyrrole); EQCM; EIS; Anion transport; Solvent transport