Abstract :
Summary form only given. A form of doping, secondary doping, responsible for promoting high conductivity in the conducting polymer, polyaniline, and also possibly in other conducting polymer systems, is reported. A secondary dopant is here defined as an inert substance which, when applied in the form of a liquid and/or vapor to polyaniline already doped (protonated) by a primary dopant, induces significant changes in molecular conformation and dependent properties such as solution viscosity, Vis-UV spectra, crystallinity, dielectric constant, conductivity/temperature relationship, etc. These effects may persist after complete removal of the secondary dopant. The effect of the secondary dopant, m-cresol, on selected properties of polyaniline doped with the primary dopant, d,l-camphorsulfonic acid, are summarized in the figure.
