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Information × Registration Number 0221U105812, 0121U110951 , R & D reports Title Development of nanomaterials with controlled redox activity and luminescent properties for biomedical applications popup.stage_title Head Yefimova Svitlana L., Доктор фізико-математичних наук Registration Date 02-09-2021 Organization Institute for scintillation materials NAS Ukraine popup.description2 Techniques that allow reproducibly obtaining nanoparticles (NPs) of LnVO4: Eu3 + (Ln = Gd, Y, La), CeO2-x, TiO2-x and La2Ce2O7 with different sizes have been developed. It has been experimentally shown that the irradiation of LnVO4: Eu3 + NPs with UV light causes reversible photobleaching Eu3 + luminescence due to photoreduction of Eu3 + ions to Eu2 +. For the first time, the dependence of this effect on the NPs size has been clarified. It has been found that reducing the size of CeO2-x NPs or using the reducing medium leads to a an increase in the intensity of the luminescence band associated with Ce3 + ions, which can be used to control the nonstoichiometry of CeO2-x NPs and their redox properties. It has been found out that the luminescent properties of the synthesized TiO2 NPs are governed by the presence of Ti3+ ions in the crystal lattice. Product Description popup.authors Yefimova Svitlana Leonidivna Bespalova Iryna I. Grygorova Ganna V. Hubenko Kateryna О. Maksimchuk Pavlo О. Seminko Vladyslav V. Sorokin Olexandr V. popup.nrat_date 2021-09-02 Close