X-Ray excited luminescence of organo-lanthanide complexes
| Autor: | V. A. Ilichev, Mikhail N. Ivin, Andrey A. Kukinov, Alexey N. Trufanov, Tatyana V. Balashova, Mikhail N. Bochkarev, Sergey V. Obolensky |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Lanthanide
Materials science Photoluminescence Analytical chemistry X-ray General Physics and Astronomy 02 engineering and technology Radioluminescence 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Ion Excited state Irradiation Physical and Theoretical Chemistry 0210 nano-technology Luminescence |
| Zdroj: | Physical Chemistry Chemical Physics. 21:16288-16292 |
| ISSN: | 1463-9084 1463-9076 |
| Popis: | A comparative study of the photoluminescence (PL) and radioluminescence (RL) of lanthanide complexes with benzimidazolylphenolate (NON), 4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedionate (TTA) and 1,3-acetylacetonate (acac) ligands revealed significant differences in the total and relative intensity of emission. The PL spectra contain both bands of metal-centered and ligand centred emission while X-ray excited compounds display only the bands of Ln3+ ions, the relative intensity of which differs from that in UV excited analogues. The RL intensity of all the studied complexes is about 300 times lower than that of PL. Increasing the cathode current and tube voltage enhances the RL efficiency insignificantly. Simultaneous irradiation of the sample with X-ray and UV radiation leads to a corresponding increase in the intensity of emission. A possible mechanism of RL of organo-lanthanide complexes is discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|