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Information × Registration Number 0221U105524, 0115U001396 , R & D reports Title Hybrid nanocomposites and nanostructures with plasmon resonance and exciton absorption based on liquid crystals, metals and semiconductors (synthesis, optical, electrochromic, chemichromic, photoelectrocatalytic properties). popup.stage_title Head Volkov Serhii V, Registration Date 15-07-2021 Organization Institute of General and Inorganic Chemistry. VI Vernadsky National Academy of Sciences of Ukraine popup.description2  The project is devoted to the development of new hybrid nanocomposites and nanostructures with plasmon resonance and exciton absorption based on liquid crystals (LC), metals (Ag, Au) and semiconductors (Ti oxides and chalcogenides Zn, Cd, Pb) in the form of optically transparent glasses, films and planar heterostructures with LC matrix and determination of their optical, nonlinear-optical, photo-electrochemical properties. Methods of synthesis in the alkanoate LC medium of semiconductor and metal mono- and heteronanoparticles of the core / shell type (CdSe/ZnS, CdSe/CdS, CdSe/PbS, Ag/CdSe, Ag/CdS, Ag/PbSe, Ag/PbS, Au/CdS, Au/CdSe). Optical LC composites with metal and semiconductor nanoparticles have been developed and the effect of plasmon resonance and exciton absorption on the optical and nonlinear optical properties of LC nanocomposites as materials of ultrafast information transmission systems, modulators and light flux deflectors has been studied. It is shown that the obtained nonlinear optical materials are characterized by highly efficient optical susceptibility c(3) ~ 10-6 esu. Methods for the synthesis of photosensitive nanoheterostructures and nanocomposites of cadmium, zinc and Ti oxides have been developed. Their photoelectrochemical properties, recombination processes, surface structure, as well as efficiency in photoelectrochemical systems for sunlight conversion have been studied. It is established that the creation of nanoheterostructures and nanocomposites based on zinc selenides increases the photocatalytic activity of the surface, improves charge separation and prevents recombination processes, which leads to an increase in photopotential and efficiency of the electrodes based on these materials. Chemical precipitation obtained photosensitive materials based on zinc selenide and CdSe/ZnSe heterostructure, promising for use as photoanodes of solar cells. Product Description popup.authors popup.nrat_date 2021-07-15 Close