Electro- and photoconductive properties of the PVA/PAN-I-2 blends

The electrical conductivity of poly(vinylalcohol)/polyaniline-iodine blend (PVA/PAN-I-2) prepared by solution process was investigated. The FTIR spect roscopy revealed a structural change of both shape and intensity of the pol yaniline (PAN) bands after doping with iodine, indicating the formation of a charge transfer complex. The J-V curves for pure PAN; PAN-I-2 and PVA/PAN -I-2 film obey the ohm law at lower voltages, deviate from the linear respo nse at higher voltages and finally display the breakdown behavior. The PVA/ PAN-I2 exhibit photoconductivity by UV/visible irradiation as well as oscil lations that may be attributed to a nonlinear behavior of the blend.