Optical and electrophysical properties of Ag–PEPC nanocomposites

Absorption and luminescence spectra as well as the temperature dependences of electrical conductivity of polyepoxypropylcarbazole (PEPC) with Ag nanoparticles are studied. Polyepoxypropylcarbazole results in an additional stabilization of Ag nanoparticles. They cause essential PEPC photoluminescence quenching. An additional maximum in the luminescence spectrum appeared to be decreasing in time, probably due to some photochemical reaction. Metallic type of conductivity appeared at intermediate temperatures even with rather low concentration of nanoparticles.