Improving the emission quantum yield in dinuclear Eu(III) and Tb(III) complexes with 2-fluorobenzoate.
The reaction of Ln(NO3)2·6H2O salts (Ln = Eu and Tb) with an excess of 2-fluorobenzoic acid (H-2FBz) in an ethanol/water mixture allows the isolation of dinuclear compounds with the formula [Ln2(μ2-2FBz)4(2FBz)2(H-2FBz)2(H2O)2] (Ln = Eu (1) and Tb (2), 2FBz = 2-fluorobenzoate). A solid-state photolu...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/185088 |
| Acceso en línea: | https://hdl.handle.net/2445/185088 |
| Access Level: | acceso abierto |
| Palabra clave: | Luminescència Terbi Luminescence Terbium |
| Sumario: | The reaction of Ln(NO3)2·6H2O salts (Ln = Eu and Tb) with an excess of 2-fluorobenzoic acid (H-2FBz) in an ethanol/water mixture allows the isolation of dinuclear compounds with the formula [Ln2(μ2-2FBz)4(2FBz)2(H-2FBz)2(H2O)2] (Ln = Eu (1) and Tb (2), 2FBz = 2-fluorobenzoate). A solid-state photoluminescence study of complexes 1 and 2 shows the 4f-4f lanthanide transitions in the visible range with improved emission quantum yields. 1 and 2 are water soluble and photoluminescence studies have also been performed in water and D2O solutions, showing that the emission due to the 4f-4f electronic transitions is still present. The magnetic behaviors of 1 and 2 are also reported. |
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