Tunable, Ligand-Based Emission from Inorganic−Organic Frameworks: A New Approach to Phosphors for Solid State Lighting and Other Applications
| Autor: | Anthony K. Cheetham, Alina Y. Warner, Alexander Mikhailovsky, Simon J. Teat, Joshua D. Furman |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Strontium
Alkaline earth metal Materials science Ligand General Chemical Engineering Inorganic chemistry chemistry.chemical_element Quantum yield Phosphor 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 7. Clean energy 01 natural sciences 0104 chemical sciences law.invention Solid-state lighting chemistry law Materials Chemistry Molecule 0210 nano-technology Luminescence |
| Zdroj: | Chemistry of Materials. 22:2255-2260 |
| ISSN: | 1520-5002 0897-4756 |
| DOI: | 10.1021/cm9030733 |
| Popis: | Two dense inorganic−organic frameworks were prepared using the intrinsically luminescent organic ligand 9-fluorenone-2,7-dicarboxylic acid (H2FDC) in combination with the alkaline earth metals calcium and strontium. Ca(FDC)(H2O)2 (1) and Sr(FDC)(H2O)5·2H2O (2) were prepared hydrothermally and both adopt three-dimensional framework structures. They absorb strongly between 380 and 460 nm and show broad visible emission with peaks at 503 and 526 nm, respectively. Structure 1 shows a quantum yield at room temperature of 7.8% which increases to 15% at −196 °C, while structure 2 shows a room temperature quantum yield of 2.8%, increasing to 3.3% at −196 °C. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|