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Information × Registration Number 0222U001898, 0117U002293 , R & D reports Title Low-temperature properties of saturated carbon nanosystems, impurity molecular solids and cryocrystals popup.stage_title Head Kryvchikov Oleksandr I., Доктор фізико-математичних наук Registration Date 04-02-2022 Organization B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine popup.description2  In the work by methods of precision X-ray and electrographic diffractometry, optical spectroscopy, new phenomena in promising in terms of possible practical uses of molecular crystalline systems and carbon nanomaterials were identified and studied. The processes of saturation of carbon materials (C60 fullerite, carbon cells) and iron chalcogenides with different gases, as well as the effects of saturation on structural and luminescent properties were studied. The heat capacity of bromo-substituted benzophenones and normal and deuterated thiophene (C4H4S, C4D4S) crystals, as well as low-temperature sensitization of naphthalene phosphorescence with ortho-bromobenzophenone were studied. The influence of mutual solubility on the nanostructure and morphology of binary mixtures of cryocrystals was studied. Carbon cellular cell structures with walls in one layer of graphene were synthesized for the first time. The dependence of the size of carbon honeycomb channels and, accordingly, their density on the cooking conditions, ie on the sublimation temperature, has been established. This structure is based mainly on the most stable configuration of carbon sp2, but, as shown theoretically, has interatomic sp3 bonds along the lines of connection between the channels. Realistic nanostructured models of saturation of carbon cells with inert gases Ar, Kr, Xe and carbon dioxide are proposed, which are consistent with the experiments. For the first time, the sorption and subsequent desorption of argon and carbon dioxide by carbon cells have been studied. It is shown that atoms and molecules of gases sorbed in the channels of carbon cells form ordered structures. It was found that the complete desorption of argon and CO2 from carbon cells occurs at temperatures about three times higher than the point of sublimation of these gases, which indicates their strong physical binding to the carbon matrix. Product Description popup.authors popup.nrat_date 2022-03-09 Close