An overall view of the structure of an heterogeneous medium: the conducting polyaniline

The structures of free standing films of polyaniline (PAni) protonated by c amphorsulfonic acid (CSA) are characterized by different scattering techniq ues: WAXD, IINS, SANS and SEM. In this way, we could investigate the comple x structural arrangement of these films at different length scales. It is s hown that a unique description of structure and microstructure of such film s is not realistic since they tightly depend on the conditions of preparati on and processing. This contribution gives an account of the most important structural data obtained on films prepared in Grenoble (France) during the four last years.