The invention relates to a method of preparing size-controllable nano structure conductive
polyaniline, which includes steps: adding solution of
monomer aniline to solution of oxidant under temperature of 0-5 DEG C, carrying
polymerization reaction according conventional
interfacial polymerization method or homopolymerization method, after conventional post-treatment, obtaining the size-controllable nano structure conductive
polyaniline. The oxidant is selected according to
diameter of the needed
polyaniline nano structure by following formula: log d=0.69+0.71Eox, wherein d is
diameter of nano structure polyaniline, Eox is oxidation-
reduction potential of used oxidant. Compared with traditional ''template method'' and ''soft template method'', advantages of the invention are: template and post-treatment thereof is avoided, reaction medium is simplified, method is more simple and low-cost, defect of bad
controllability to production configuration and size of traditional template-free method is overcomed, and size completely controllable conductive polyaniline nano
fiber can be prepared by selecting oxidant with fitting oxidation-
reduction potential.