A5079271189- Lanthanide and Transition Metal Complexes
- Metal-Organic Frameworks: Synthesis and Applications
- Magnetism in coordination complexes
- Inorganic Fluorides and Related Compounds
- Radioactive element chemistry and processing
- Luminescence Properties of Advanced Materials
- Analytical chemistry methods development
St Petersburg University
2023-2025
Luminescent, heterometallic terbium(III)-lutetium(III) terephthalate metal-organic frameworks (MOFs) were synthesized via direct reaction between aqueous solutions of disodium and nitrates corresponding lanthanides by using two methods: synthesis from diluted concentrated solutions. For (TbxLu1-x)2bdc3·nH2O MOFs (bdc = 1,4-benzenedicarboxylate) containing more than 30 at. % Tb3+, only one crystalline phase was formed: Ln2bdc3·4H2O. At lower Tb3+ concentrations, crystallized as the mixture...
The complexation behavior of lanthanide(III) ions with terephthalic acid (1,4-benzene-dicarboxylic acid) in 0.01 M KNO3 aqueous solutions was studied across a broad pH range and at two metal-to-ligand ratios using potentiometric titration combined photoluminescence spectroscopy. Chemometric analysis curves enabled the determination relative molar fractions, stability constants, probable stoichiometry formed complexes. In 1:2 ratio, bis-complexes (two terephthalate ligands per lanthanide ion)...
New heterometallic antenna terephthalate MOFs, namely, (Eu
The structural features and luminescent properties of heterometallic Tb–Gd, Tb–La, Tb–Y terephthalate metal–organic frameworks, namely (TbxM1−x)2(1,4-bdc)3∙4H2O (M = Gd, La, Y), were studied in detail a wide concentration range (x 0.001–1). crystalline phase synthesized compounds corresponds to Ln2(1,4-bdc)3·4H2O. lifetime 5D4 decreased with increased Tb3+ concentration, but PLQY depends non-linearly on the concentration. 50% substitution for Y3+, Gd3+, or La3+ ions result significant...