Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.294, 201-204, 1997
X-Ray Studies of Doped Polyaniline Films
Doping and complexation of polyaniline (PANI) and dodecyl benzenesulfonic acid (DBSA) in xylene was conducted at various temperatures, As cast and isothermally treated films were examined by the wide angle X-ray scattering. Results of transmission and reflection techniques revealed that the complexation led to form a layered structure. The layered structure was also found oriented that the PANI and DBSA are stacked one another across the film thickness. The anisotropic feature of the layered structure was independent of the mixing temperatures but changed by the successive isothermal treatments. A model structure similar to smectic A was proposed to account for the very large layer spacing of 3.3 nm and the close packing of 0.35 nm between the PANI units within the layer.