Dynamics of camphor sulfonic acid in polyaniline (PANI-CSA): a quasielastic neutron scattering study

PolyAniline (PANI) doped by camphor sulphonic acid (CSA) exhibits an electr onic conductivity of several hundreds of S/cm. All the authors agree to inv oke in various extents the role of disorder in the evolution of the transpo rt properties as a function of temperature. The IRIS spectrometer at the Ru therford-Appleton Laboratory was used to remove uncertainties of previous I N6-IN16 experiments at Institut Laue-Langevin. The rigidity of the PANI cha ins was confirmed, in both a conducting and a partially doped sample. All t he observable quasielastic scattering occurs from the CSA dynamics. However , this contribution is too weak in the case of the partially doped specimen to conclude about the coupling of the counter-ion disorder with the electr onic transport properties. (C) 2001 Elsevier Science B.V, All rights reserv ed.