Search academic texts

Information × Registration Number 0221U106762, 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 20-12-2021 Organization Institute for scintillation materials NAS Ukraine popup.description2 The influence of technological conditions of synthesis on luminescent and redox properties of nanocrystals containing oxygen and ions with variable valence has been studied. The effect of cation exchange between Ce3+ ions in inactivated cerium oxide nanocrystals and Eu3+/Tb3+ ions has been revealed. It was found that the ability to cation exchange depends on the degree of oxidation of cerium ions on the surface of nanocrystals and this process can be controlled by UV irradiation and the addition of oxidants. It has been shown that orthovanadate NPs have the ability to generate superoxide anions and hydroxyl radicals in aqueous solutions in so-called dark conditions after pre-irradiation with UV light. It is shown that the "dark" redox activity of orthovanadates can be influenced by varying the size and degree of defect of nanocrystals and the introduction of impurity ions europium. Product Description popup.authors Yefimova Svitlana L. Bespalova Iryna I. Grygorova Ganna V. Hubenko Kateryna О. Maksimchuk Pavlo О. Seminko Vladyslav V. Sorokin Oleksandr V. popup.nrat_date 2021-12-20 Close