The enhancement of luminescent properties of Tb3+ complexes with tetra-1,3-diketone ligands promoted by the tetrathiacalix[4]arene scaffold |
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| Authors: | Sergey N Podyachev Svetlana N Sudakova Gulnaz Sh Gimazetdinova Rinas N Nagimov Aidar T Gubaidullin Victor V Syakaev Dmitry V Lapaev Olga B Bazanova |
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| Institution: | 1. Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Str., 8, 420088 Kazan, Russian Federation;2. Kazan National Research Technological University, K. Marks Str., 68, 420015 Kazan, Russian Federation;3. Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS, Sibirsky Tract, 10/7, 420029 Kazan, Russian Federation |
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| Abstract: | This is the first report on the synthesis and characterization of tetra-1,3-diketone derivatives of tetrthia- and calix4]arenes substituted by acetylacetonyl or dipivaloylmethanyl moieties at the upper rim and bearing hydroxyl groups at the lower rim as ligands for Tb3+ complexes. The spatial structure and tautomeric content for the synthesized ligands have been determined by means of X-ray, IR and NMR spectroscopy. Comparison of the sensitizing properties of tetrathiacalix4]arenes and their calix4]arene analogues on the Tb3+-centered luminescence in DMF solutions has been performed. A substantial enhancement of the luminescent properties of Tb3+- complexes with tetra-1,3-diketone ligands promoted by the tetrathiacalix4]arene scaffold was established. |
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| Keywords: | Calix[4]arene 1 3-Diketone Lanthanides complexes Terbium Luminescence |
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