ÜZVİ - QEYRİ-ÜZVİ KOMPOZİT MATERİALLARIN SİNTEZİ VƏ TƏDQİQİ

Abstract

High-molecular compounds and metal-containing nanocomposites based on them are widely and purposefully used for the creation of new generation unique materials for micro- and nanoelectronics, light-sensitive nanoscale systems, optoelectronic nanosensors, effective and selective catalysts, medical-biological nanomaterials. The increasing demands of modern innovative technologies in new effective complex materials determine the relevance and perspective of developing and researching new multifunctional polymer nanomaterials with practical valuable properties. Complexes of ruthenium with 2,2׳ - bipyridyl and 1,10 – phenanthroline have interesting photophysical, photochemical and electrochemical properties, as well as high thermal (up to 4000C) and chemical stability (they are inert against solid sulfuric acid and 50% alkaline solution). An additional interest in these structures is the possibility of using them as a catalyst to break down water into elements under the influence of visible light. As a matrix, various organic polymers can be used - polymethacrylates, polyurethanes, polyamides, polyimides, polybenzimidazoles, etc. Unfortunately, organic matrices have a number of disadvantages: low thermal stability, uniform distribution of complex molecules in the obtained material, and they do not allow the synthesis of hybrids with more than 1% concentration of Ru(II) complex. The solution to this problem is related to the replacement of the organic polymer with the inorganic matrix - SiO2 (synthesized through the hydrolysis of tetraalkoxysilanes by the sol-gel method and then obtained by polycondensation of the obtained compounds). The synthesis of the indicated complexes, their introduction into the SiO2 matrix synthesized by the sol-gel method, and the physical-mechanical and optical properties of the obtained nanohybrid materials were studied. At that time, the main issue was the purchase of composites in the form of monolithic samples. Synthesized composite samples were obtained in monolithic form and studied by IR, NMR, EUS, elemental analysis, luminescence methods.