Optical and electrical properties of star-like fullerene-containing polymers

Polystyrene and polyethyleneoxide films both containing fullerene, C-60, designated as FPS and FPEO were investigated by the ellipsometry, photoluminescence spectra and electrical de conductivity methods. The FPS and FPEO films display complex refractive index of 1.7-i0.05 and 1.45-i0.0 respectively. The photoluminescence maximum attributed to C-60 Shifted to higher photon energies proportionally to with the increase of the number of the polymer rays attached. The shift can be described by the linear relationship Delta E=004N, where Delta E is the shift in eV and N is the number of polymer rays attached. The magnitude of de conductivity exhibited by the FPS films varied direct1 proportionally to molar concentration of C-60.