Search academic texts

Information × Registration Number 0213U007622, 0112U002485 , R & D reports Title Structural and chemical factors of design, synthesis and functioning of new supramolecular and nanostructured systems with given complexing, optical and catalytic properties popup.stage_title Head Kamalov G.L., Registration Date 29-03-2013 Organization A.V.Bogatsky Physico-Chemical Institute of the National Academy of Sciences of Ukraine popup.description2 Linear molecules that contain as a central fragment 1,5-dihydroxynaphthalene, tri- and tetraethyleneglycole linkers and fluorenone, its 2-methoxy- and 2-isopropoxy- derivatives as terminal groups were obtained. Methods of synthesis of f-p- and f-d- heteronuclear compounds were worked out. It is set that complexes with calix[4]arenes are characterized by the most intensive 4f-luminescence. However, as a result of lowering of triplet level of the ligand in heteronuclear complexes, 4f- luminescence registers only in IR area. Intensive 4f-luminescence in the visible area of spectrum of lanthanides in the tin-containing complexes is related to the certain method of organization of their structure (by the change of distance between the ions of lanthanides and donor centers of the ligand, by the number of the coordinated molecules of water, decline of triplet levels of ligands). The obtained complexes are perspective as basis for creation of molecular receptors and luminescent nanoparticles. Prognostication and thermodynamics estimation of MX solubility (M - Eu, Cd, Zn; X - S, Se) in fusions of the system NaCl - KCl are conducted; role of different factors in the processes of nanostructures forming during crystallization of solutions-fusions is determined. Methods of direct and indirect spectrophotometric determination of multivalent forms of cerium Ce(III) and Ce(IV) in the standards of cerium nanodioxide and calcium hydroxiapatite activated by the ions of Ce(III) were worked out. Solid solutions on the basis of calcium hydroxiapatite (GAP), activated by the ions of Ce(III) is obtained by precipitation from water solution and by sol-gel method. The complete prevailing of Ce(IV) is determined practically in all standards of cerium nanodioxide. Increase of Ce(III) concentration in the standards of GAP is determined after calcination at 800 С in the СО medium. Product Description popup.authors Іванов Ю.Е. Антонович В.П. Березовська І.В. Богащенко Т.Ю. Грищук Л.В. Доценко В.П. Жихарева Е.А. Зінченко В.Ф. Зубар Е.В. Кікоть Л.С. Камалов Г.Л. Кириченко Т.И. Ковалевская И.П Коровін А.Ю. Кулигіна К.Ю. Леоненко І.И. Лобач О.В. Ляпунов А.Ю. Павлинчук С.А. Починок И.В. Русакова Н.В. Смола С.С. Снурникова О.В. Степанов Д.Е. Стоянов А.О Стоянова И.В. Тимухін Е.В. Фадєєв Е.Н. Яволовський А.О. Яковенко И.С popup.nrat_date 2020-04-02 Close