CHANGE WITH TIME OF THE PROPERTIES OF POLY(SELENO-P-NAPHTHALENE DIAMINE) DOPED WITH CHLORINE

After synthesis, poly(seleno-p-arylene diamine) has been doped with ch lorine. X-ray photoelectron spectroscopy (XPS) and electron spin reson ance (ESR) have been carried out on the doped powder. The changes in t he experimental results with storage time have been systematically ana lyzed. It is observed that, relative to carbon, the atomic percentage of oxygen increases with time while the signals of N, Cl and Se decrea se. The changes in the N1s and Se3d spectra show that the polymer is p rogressively decomposed by chlorine. This decomposition is in good agr eement with the change in the ESR signal. These modifications can expl ain the decrease in conductivity with increasing storage time.