The effect of laser radiation on the conductivity of poly(diacetylene)

It is demonstrated that an increase in the dark conductivity of poly(diacetylene) (PDA) upon laser irradiation in oxygen-containing media is determined by the formation of thin conducting surface layers. Pulsed laser irradiation at an energy of 0.04 J, a wavelength of 530 nm, and a pulse duration of 20 ns increases the conductivity of the surface PDA layers by four orders of magnitude. It is supposed that the laser-induced degradation and the subsequent stabilization of the surface PDA layers are mainly determined by photooxidation.