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1999 | 95 | 6 | 983-990
Article title

Quantum Efficiency of the Luminescence of Ytterbium(III) ß-Diketonates

Content
Title variants
Languages of publication
EN
Abstracts
EN
The processes of the energy deactivation of electronic excitation in Yb(III) ß-diketonates and their dependence on the nature of ß-diketone and the second ligand as well as the environment and its state (complexes in organic solvents and polymer matrix) were studied. Taking as an example the ytterbium thenoyltrifluoroacetonate, it was shown that the energy losses in the ligand and Yb(III) ion, which is due to the high-frequency vibrations of the central C-H group of the ß-diketone, can lead to the decreased quantum yield of the luminescence. The increase in the medium rigidity causes the decrease in losses in the ligand, but does not affect the deactivation of the Yb(III) ion excited level. In the mix-ligand complexes the second ligand (1,10-phenanthroline) improves the screening of the central ion providing almost full transfer of the energy, absorbed by ligand, to ytterbium ion.
Keywords
EN
Publisher

Year
Volume
95
Issue
6
Pages
983-990
Physical description
Dates
published
1999-06
received
1998-07-23
(unknown)
1999-02-25
Contributors
author
  • A.V. Bogatsky Physico-chemical Institute of National Academy of Sciences of Ukraine, 86, Lustdorfskaya doroga, 270080, Odessa, Ukraine
author
  • A.V. Bogatsky Physico-chemical Institute of National Academy of Sciences of Ukraine, 86, Lustdorfskaya doroga, 270080, Odessa, Ukraine
author
  • A.V. Bogatsky Physico-chemical Institute of National Academy of Sciences of Ukraine, 86, Lustdorfskaya doroga, 270080, Odessa, Ukraine
author
  • A.V. Bogatsky Physico-chemical Institute of National Academy of Sciences of Ukraine, 86, Lustdorfskaya doroga, 270080, Odessa, Ukraine
author
  • National Ozone Monitoring Research Center, Belorussian State University, 7, Kurchatova St., 220064, Minsk, Belarus
author
  • National Ozone Monitoring Research Center, Belorussian State University, 7, Kurchatova St., 220064, Minsk, Belarus
References
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv95z612kz
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