Seven- and eight-coordinate lanthanide(III) amidophosphate complexes: synthesis, characterization and photoluminescence
| Autor: | Luca Pietrobon, Marco Bortoluzzi, Andrea Di Vera, Jesús Castro |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Settore CHIM/03 - Chimica Generale e Inorganica
Lanthanide Photoluminescence Coordination sphere Chemistry 010402 general chemistry 010403 inorganic & nuclear chemistry 01 natural sciences 0104 chemical sciences Ion Characterization (materials science) Crystallography Materials Chemistry Physical and Theoretical Chemistry |
| Zdroj: | Journal of Coordination Chemistry. 74:1466-1481 |
| ISSN: | 1029-0389 0095-8972 |
| DOI: | 10.1080/00958972.2021.1916001 |
| Popis: | Diphenyl N-dimethylamidophosphate, O = P(OPh)2(NMe2), was introduced in the coordination sphere of trivalent lanthanide ions in combination with β-diketonates to obtain seven- and eight-coordinate complexes, [Ln(β-dike)3{O = P(OPh)2(NMe2)}n] (Ln = Eu, β-dike = dibenzoylmethanate, n = 1; Ln = Eu, β-dike = tenoyltrifluoroacetonate, n = 2; Ln = Tb, β-dike = acetylacetonate, n = 2). The compounds were characterized spectroscopically and, in the case of the dibenzoylmethanate derivative, by single-crystal X-ray diffraction. The Eu(III) complexes exhibited bright red emission associated to the 5D0→7FJ transitions of the metal center, with noticeable antenna-effect from the coordinated ligands and lifetimes strongly dependent upon the coordination number. The Tb(III) derivative showed intense green photoluminescence, related to 5D4→7FJ transitions of the metal ion. |
| Databáze: | OpenAIRE |
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