Fused Fluorinated Bis-β-diketones and Luminescent-Spectral Properties of Their Complexes with Europium

3,6-Bis-<i>β</i>-Dicarbonylsubstituted Carbazoles Bearing N-Spacers and Their Eu(III) Complexes as Immunofluorescent Labelling Agents

“…One of the ways to further increase the sensitivity and rapidity of the method is the search for aromatic β-diketones with enhanced spectral properties and improved stability. Previously studied carbazole compounds containing two β-dicarbonyl polyfluorinated fragments have satisfactory luminescence and increased stability of complexes by two to three orders of magnitude in comparison with conventional β-diketones [8] [9]. Earlier, we obtained a biomolecular labelling agent-a carbazole-based tetraketodiester with two methoxycarbonyl groups separated by difluoromethylene spacers from the chelating center [10].…”

The Impact of the Alkali Metal Ion on the Crystal Structure and (Mechano)luminescence of Terbium(III) Tetrakis(β‐diketonates)

“…Ligand design dramatically influences on the characteristics of the resulting complexes. The introduction of fluorine substituents in β‐diketonate core is a powerful tool for the fine‐tuning of the properties of metal organic architecture . For instance, complexes [Na‐tetraglyme] + [Ln(hfa) 4 ] – and Na[Ln(hfa) 4 ] were successfully used as a single‐organic CVD source for NaLnF 4 films preparation.…”

“…For instance, complexes [Na‐tetraglyme] + [Ln(hfa) 4 ] – and Na[Ln(hfa) 4 ] were successfully used as a single‐organic CVD source for NaLnF 4 films preparation. [6e], [6m] Partially fluorinated ligands enhance precursor volatility and increase the solubility of complexes providing their better crystallization . Moreover, the solvent coligands can be displaced from the coordination sphere because of the additional coordination of fluorine atoms with metal ions in heterometallic structures …”