Polyaniline nanofibers (see Figure and cover) have been synthesized using dilute polymerization with reduced concentrations of both monomer and oxidant and a constant molar ratio. The diameters of the polyaniline nanofibers are tunable by appropriate selection of dopant acids. A dispersion of polyaniline nanofibers could be cast to form highly porous nanofibrous films without deformation of the nanofiber morphology.
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