Spectral dependence of the photoluminescence of MEH-PPV/H2TPP nanocomposite and its change under gamma radiation

The formation of an MEH-PPV/H2TPP nanocomposite, the energy transfer processes leading to the quenching of the photoluminescence of the polymer, and the effects of gamma radiation from a Cs137 source on the photoluminescence of an MEH-PPV/H2TPP nanocomposite are examined. The dose dependence of the photoluminescence intensity within the range of 0.5–12 kGy in H2O and the processes of photoluminescence recovery after irradiation were studied. The high stability of the radiating properties of the nanocomposite in comparison with the pure polymer is shown.