Synthesis of 2,6-bis-(oxazolyl)pyridine ligands for luminescent Ln(III) complexes

نویسندگان

  • Goreti Pereira
  • Miguel F. Ferreira
  • Elisabete M. S. Castanheira
  • José A. Martins
چکیده

New bis-(oxazolyl)pyridine ligands for Ln(III) ions were prepared using a expeditious methodology from threonine and dipicolinic acid chloride. The synthetic strategy includes a dehydration step to give a bis-dehydroaminobutyric acid derivative followed by bromination and cyclization with DBU. Photophysical studies of Eu(III) and Tb(III) complexes of these ligands showed that the 2,6-bis-(oxazolyl)pyridine moiety acts as an effective sensitizer for lanthanide luminescence and indicate the formation of 3:1 complexes [Ln-(bis(oxazole)pyridine)3] .

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تاریخ انتشار 2012