Perdeuterated hexafluoroacetylacetonato-neodymium [Nd (HFA-D)
3] and -ytterbium [Yb (HFA-D)
3] complexes were synthesized by the keto-enol tautomerism reaction of Nd (HFA-H)
3 and Yb (HFA-H)
3 in methanol-
d4 in order to reduce the radiationless transition to the ligands. The luminescence properties of the Nd (HFA-D)
3 complex in organic solvents were analyzed by the Judd-Ofeltheory. The luminescence quantum yield of the Yb (HFA-D)
3 complex increased with the increasing coordination ability of the solvent molecules. The luminescence lifetime of the Yb (HFA-D)
3 complex in dimethylstilfoxide (DMSO-
d6) which had the highest coordination ability was 66 μs.
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