Journal
MOLECULAR PHYSICS
Volume 101, Issue 7, Pages 1037-1045Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/0026897021000046898
Keywords
-
Ask authors/readers for more resources
The synthesis, luminescence properties, experimental determination and theoretical calculation of the emission quantum yield of Eu(NTA)(3).2L complexes, where NTA is naphtoiltrifluroacetone and L denotes H2O or DMSO (dimethyl sulphoxide), were reported. The compounds were characterized by elemental analysis (carbon, hydrogen and europium), thermal analysis, UV-visible absorption and photoluminescence spectroscopies. The experimental quantum yields were determined based on a method previously proposed by Bril and collaborators. The Eu(NTA)(3).2DMSO compound shows a high value for the 02 intensity parameter (35.8 x 10(-20) cm(2)), reflecting the hypersensitive nature of the D-5(0) --> F-7(2) transition and indicating that the lanthanide ion is in a highly polarizable chemical environment. The experimental quantum yield measured for that compound, 0.75, is one of the highest so far reported for solid-state europium complexes. The theoretical calculations of the quantum yield were carried out by solving an appropriate set of rate equations and by using empirical spectroscopic parameters and energy transfer rates. The theoretical results agree well with the experimental data for both complexes. The photostability of Eu(NTA)(3).2DMSO at 358 K was evaluated in order to verify whether this complex can be applied as a phosphor for blue light emitting devices.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available