Templateless and surfactantless route to the synthesis of polyaniline nanofibers

A templateless and surfactantless approach for the synthesis of polyaniline nanofibers ramose structures by chemical oxidation polymerization of aniline was described. It was found that these nanofibers are interconnected to form ramose structures, rather than isolated nanofibers. The diameters and lengths were found in the range of 100-120 nm and several micrometers, respectively. The results show that their high surface area, porosity, and small diameters may enhance diffusion of molecules and dopants into the polyaniline nanofibers and give significantly better performance in both sensitivity and time response for application in channel sensor.