Atomic force microscopy of polyaniline with globular structure
The morphology of in-situ grown polyaniline films on various substrates was studied by atomic force microscopy. The analysis of polyaniline microstructure on different scales reveals a hierarchical structure that consists of spherically symmetric nanoparticles with a characteristic size of about 200 nm, each of which, in turn, consists of globules with a size of about 50 nm. The formation of the globular structure of polyaniline is discussed on the basis of fractal theory taking into account diffusion-limited aggregation of particles and clusters.