Intensely Photoluminescent Diamidophosphines of the Alkaline-Earth Metals, Aluminum, and Zinc
| Autor: | Christoph Schoo, Thomas J. Feuerstein, Sebastian Bestgen, Peter W. Roesky, B. Lilli Neumeier, Ralf Köppe, Claus Feldmann, Christina Zovko |
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| Rok vydání: | 2018 |
| Předmět: |
Alkaline earth metal
Photoluminescence 010405 organic chemistry Ligand chemistry.chemical_element General Chemistry Zinc 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences Metal chemistry.chemical_compound Crystallography chemistry visual_art Diamine visual_art.visual_art_medium Luminescence Phosphine |
| Zdroj: | Angewandte Chemie International Edition. 57:14265-14269 |
| ISSN: | 1433-7851 |
| Popis: | The positively charged and weakly polarizable s-block metals commonly do not usually have phosphine ligands in molecular complexes. Herein, we report mono- and dinuclear small diamidophosphine complexes of the alkaline-earth metals Mg, Ca, and Sr, which were prepared from simple precursors and a phosphine-functionalized diamine ligand N,N-bis(2-(diphenyl-phosphino)phenyl)ethane-1,2-diamine (PNHNHP). The alkaline-earth metal based complexes [(PNNP)Mg]2 and [(PNNP)M(thf)3 ] (M=Ca, Sr), exhibit unusual coordination spheres and show bright fluorescence, both in the solid state and in solution. For comparison, the even stronger luminescent Al and Zn complexes [(PNNP)Zn]2 and [(PNNP)AlCl] were prepared. Emission lifetimes in the nanosecond range and high photoluminescence quantum yields up to 93 % are observed at room temperature. |
| Databáze: | OpenAIRE |
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