Structure and luminescence studies of tris(nitrato-O,O′)bis(2, 2′-bipyridyl-N,N′)dysprosium(III) complex

Eny Kusrini, Muhammad I. Saleh, Hoong K. Fun

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1 Citation (Scopus)


The title compound, [Dy(NO3)3(bipy)2], is isostructural with the La, Pr, Nd, Eu and Lu analogues where bipy=2, 2′-bipyridyl. The Dy complex was crystallized in orthorhombic with space group Pbcn. The Dy(III) ion was coordinated with the two bipy ligands and three nitrate anions giving a ten coordination number. Measurements of the molar conductance in ethanol and water solutions indicate that the complex is non-electrolyte. A comparative study of the emission of [Dy(NO3) 3(bipy)2] complex with those of the adduct mixture of bipy and Dy at a 1:1 ratio, has been investigated. In the solid state, photoluminescence (PL) spectrum of the complex had sharp emission bands corresponding to the 4F9/26H 15/2 (476.5 and 482 nm), 4F9/26H13/2(572.6 and 573.8 nm), 4F 9/26H11/2 (661.6 nm) and 4H3/26H15/2 (961.0 nm) transitions. The hypersensitive peak of the complex has the yellow emission stronger than the blue emission in the solid state as well as in the solution. The complex has a good thermal stability due to the role of π-π interactions stacking.

Original languageEnglish
Pages (from-to)1813-1817
Number of pages5
JournalJournal of Luminescence
Issue number10
Publication statusPublished - Oct 2010


  • Crystal structure
  • Dysprosium 2,2′-Bipyridyl
  • Photoluminescence


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