Electromagnetic functionalized polyaniline nanostructures

摘要

Polyaniline (PANI) nanofibres or nanotubes (180-200 nm in diameter) containing Fe_3O_4 nanoparticles (diameter approx = 10 nm) and PANI-coated gamma-Fe_2O_3 nanoneedles (40-80 nm in diameter and 500-600 nm in length) were prepared by in situ, doping polymerization in the presence of H_3PO_4 as a dopant. The composite nanostructures exhibited electrical-magnetic properties that are dependent on the structure and the content of the magnetic nanoparticles used. The formation mechanism of the self-assembled composite nanostructures is discussed.