Micro/nanostructures of PANI obtained in the presence of water soluble polymers and their electrochemical sensing properties

Polyaniline (PANI) micro/nanostructures are synthesized by electrochemical polymerization, and characterized by field-emission scanning electron microscopy, Fourier transform infrared spectroscopy and UV-visible spectroscopy. It is revealed that the PANI microwires are produced with high yield with diameters of about 2 μm and lengths of several hundreds of micrometers, while nanostructures in the presence of PAA have diameters of about 500 nm. The micro/nanostructured PANI films are very stable and show high electrocatalytic reduction toward H 2 O 2 , which makes it an ideal substrate for H 2 O 2 detection and offers great promise for biosensing applications. The interactions between template molecules and monomers play the key role in the formation of PANI microwires.