CHLORINE DOPED POLY(N-VINYLCARBAZOLE) PROPERTIES

Poly(N-vinylcarbazole) (PVK) has been studied because of its photocond uctive properties. However PVK absorbs only in the UV and PVK complex- salt are necessary to obtain absorption in the visible range. Here the complex-salt PVK/Cl has been studied by IR, visible and near UV absor ption, thermogravimetric analysis (TGA), RX diffraction (XRD), photoel ectron spectroscopy (XPS) and electron spin resonance (ESR). The forma tion of a complex salt PVK+-Cl- is shown by ESR and XPS, with C+ and N + radicals apparition. There is broad absorption peak in the visible l ight, however same chlorine atoms react with the polymer and there is some degradation of the polymer. After doping, the conductivity al roo m temperature increases by two order of magnitude.