Ionic liquid-doped polyaniline and its redox activities in the zwitterionic biological buffer \MOPS\
By Ke Qu and Xiangqun Zeng
Published in Electrochimica Acta
NULL
2016
Abstract
The electropolymerization of aniline in several common imidazolium-based ionic liquids has been accomplished successfully with the potentiodynamic method. Considering the fact that imidazolium-based ionic liquids are acidic, they have been selected as the electrolyte for the electropolymerization of aniline, eliminating the usage of extra inorganic or organic acids. The ionic liquids not only serve as the reaction media, exerting the unique favorable ?-? interactions between the imidazolium rings and benzene rings of aniline monomer or the growing polymer, but also act as the dopants to render different properties to the resulting polyaniline. Among the tested imidazolium-based ionic liquids, [BMIM][BF4], [BMIM][PF6], [BMIM][NTf2], [EMIM][ES] and [HMIM][FAP], polyaniline doped by the hydrophilic ionic liquid [BMIM][BF4] displays the good electrochemical responses in the biologically important \MOPS\ (3-(N-Morpholino)-propanesulfonic acid) solution with 2.34
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