| Abstract: | Conducting poly(o-chloroaniline) salis have been prepared by chemical polymerization of o-chloroaniline with five different acids. Composition and the extent of dopant in poly(o-chloroaniline) salt systems have been determined. Poly(o-chloroaniline) samples have been heat treated at four different temperatures 150, 200, 275 and 375°C and characterized by electron paramagnetic, infrared and electronic absorption spectral measurements. Thermal stabilities of the chemically synthesized poly(o-chloroaniline) salts have been studied by spectral methods. It was found that the polymer is apparently stable up to 200°C, and at around 275°C crosslinking takes place. It is inferred that the electron paramagnetic resonance signal observed in the conducting material does not arise from the current-carrying species, but rather from neutral paramagnetic species. No definite correlation exists between conductivity and the extent of dopant or spin concentration. |
