Solid phase mechanochemical synthesis of polyaniline branched nanofibers

A polyaniline supramolecular structure composed of polyaniline nanofibers, has been prepared by a simple solid-state mechanochemical reaction and template-free method. XRD analysis confirmed the good crystallinity of the product, and FTIR and UV–vis analysis indicated that the product was a highly doped emeraldine salt. Electrochemical cyclic voltammetry confirmed the electrocatalytic effect of the branched nanofiber to dopamine and hydroquinone. The growth mechanism of the unique supramolecular structure in mechanochemical reaction was discussed, together with the effect of the crystalline water of the oxidant.