Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Absorption and Lumiescence Spectra of Eu(Ⅲ) Complexes with Oxydiacetate and Dipicolinate in Aqueous Solution

  • Published : 1996.09.20
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Abstract

Absorption and luminescence spectra of Eu3+ (aquo) and the two different 1: 3 Eu3+: ligand systems in aqueous solutions are measured under mild acidic pH condition. The oxydiacetate (ODA) and dipicolinate (DPA) ligands, forming the similar geometric complexes, are used in this work. The three intensity parameters, Ωλ (λ=2, 4, and 6) are empirically determined by applying the Judd-Ofelt theorem to the oscillator strengths of the six absorption bands arising from the ground 7F0 state. Among the three intensity parameters, the Ω2 is found to response markedly to a miner change in the ligand environment via the 7F0→5D0 transition. In addition, the relative oscillator strengths of the four luminescence bands in the visible region, assigned to the 5D0→7FJ (J=1, 2, 3 and 4) transitions are obtained to investigate their sensitivity to the ligand environment. Among the four bands, the 610 nm band, attributed to the 5D0→7F2 transition, shows hypersensitivity in the luminescence.

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References

  1. Phys. Rev. v.127 Judd, B. R.
  2. J. Chem. Phys. v.37 Ofelt, G. S.
  3. Structure and Bonding v.22 Peacock, R. D.;Dunitz, J. D.(Ed.)
  4. Inorg. Chem. v.23 Stephenes, E. M.;Davis, S.;Reid, M. F.;Richardson, F. S.
  5. Inorg. Chem. v.26 Devlin, M. T.;Stephens, E. M.;Richardson, F. S.;Van Cott, T. C.;Davis, S. A.
  6. Bull. Korean Chem. Soc. v.13 Kim, J. G.;Yoon, S. K.;Yun, S. S.;Kang, J. G.
  7. Bull. Korean Chem. Soc. v.13 Jung, S. H.;Yoon, S. K.;Kim, J. G.;Kang, J. G.
  8. Acta Chem. Scand. v.22 Albertsson, J.
  9. Acta Chem. Scand. v.24 Albertsson, J.
  10. Acta Chem. Scand. v.24 Albertsson, J.
  11. Acta Chem. Scand. v.26 Albertsson, J.
  12. Acta Chem. Scand. v.26 Albertsson, J.
  13. Lanthanide Probes in Life, Chemical and Earth Sciences Bunzli, J.-C. G.;Choppin, G. R.(Ed.)
  14. J. Chem. Phys. v.49 Carnall, W. T.;Fields, P. R.;Rajnak, K.