Kokhtych L. Regularities in formation of volume periodic structures polymer - nanoparticles by the holographic method.

The results of study of volume periodic polymer-nanoparticles (NP) structures fabricated by holographic method are presented in this thesis. It was demonstrated for the first time that the stable volume structures polymer-metal NP can be obtained by using the synthesis of NP from the metal precursor preliminary distributed in a polymer matrix. Based on commercially available acryl monomers, organic-inorganic nanocomposites light-sensitive within the range 400-520nm have been developed and optimized. These materials provide efficient diffusion redistribution of NP and NP precursor in the polymer matrix. Holographic properties of the obtained nanocomposites as well as the mechanism of NP ordering have been investigated. Using NP of various nature (TiO2, SiO2, ZrO2, LaPO4, CdSe/ZnS, precursor of Ag NP), we have obtained stable volume transmission gratings with the period 0.3-3 µm and the amplitude of refractive index modulation from 0.005 up to 0.026, that sometimes exceeds by one order the values reached by another authors. Diffraction, luminescent and laser properties of the obtained structures were also investigated.