Search academic texts

Registration Number

0222U002949, 0121U112468 , R & D reports

Title

Creation of multifunctional nanostructured materials for biomedical and technical applications

popup.stage_title

Head

Bespalova Iryna I., Доктор технічних наук

Registration Date

16-02-2022

Organization

Bespalova Iryna I.

popup.description2

 For the first time, a luminescent multilayer nanostructured composite material based on titanium oxide nanocrystals TiO2 and J-aggregates of cyanine dyes was created. It is shown that cyanine dye J aggregates can be used as photosensitizers for Gretzel cell solar cells due to their high extinction coefficients. At the same time, too narrow an absorption band does not provide proper overlap with the spectrum of sunlight, and therefore - high conversion efficiency. Samples of nanocrystals of cerium oxide CeO2 and mixed nanocrystals of cerium oxide-yttrium oxide CeO2-Y2O3 were obtained, with a high content of oxygen vacancies ( 15 vol.%). The possibility of controlling the stoichiometry of CeO2 nanocrystals is shown, which influences the formation of additional oxygen vacancies necessary to compensate for the excess negative charge. A luminescent multilayer nanostructured composite material consisting of layers of J-aggregates of PIC, gold nanoparticles of Au, where eight-fold enhancement of luminescence of J-aggregates is realized, is obtained. The anti-radical properties of TiO2 nanocrystals in relation to hydroxyl radicals • OH, which is one of the most dangerous ROS for living cells, have been demonstrated. What can be a promising area of ​​research of TiO2 nanocrystals as antioxidants in the biomedical field.

Product Description

popup.authors

Bespalova Iryna I.

popup.nrat_date

2022-03-09