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Theoretical and Experimental Chemistry

, Volume 50, Issue 3, pp 167–174 | Cite as

Influence of Uncoordinated Anion-Radical TCNQ on the Photo- and Electroluminescence Properties of Eu3+ and Tb3+ Tris(Pyrazolyl)Borate Complexes

  • E. A. Mikhalyova
  • A. V. Yakovenko
  • S. S. Smola
  • V. P. Dotsenko
  • M. Zeller
  • A. W. Addison
  • V. V. Pavlishchuk
Article
  • 108 Downloads

Complexes of Eu3+ and Tb3+ with tris(3-(2-pyridyl)pyrazolyl)borate (TpPy–) of composition [Tp 2 Py Ln]Tp Py and [Tp 2 Py Ln]TCNQ · show metal-centered luminescence even in the presence of efficient luminescence quencher such as TCNQ as the counter-ion. The electroluminescence spectrum of an ITO/PVK/[Tp 2 Py Tb]TpPy/Al (PVK = poly(9-vinyl)carbazole) device showed Tb3+ emission. When [Tp 2 Py Ln]TCNQ · is used as the emitting layers presumably the emission of separate carbazole fragments of PVK was observed, which may be due to a breakdown in packing of the carbazole fragments upon the inclusion into stacks of the TCNQ anion-radicals. Very weak emission of the Tb3+ ion was detected in the LED with the [Tp 2 Py Ln]TCNQ · complex.

Key words

lanthanide complexes tris(pyrazolyl)borate anion-radical TCNQ photoluminescence electroluminescence 

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • E. A. Mikhalyova
    • 1
  • A. V. Yakovenko
    • 1
  • S. S. Smola
    • 2
  • V. P. Dotsenko
    • 2
  • M. Zeller
    • 3
  • A. W. Addison
    • 4
  • V. V. Pavlishchuk
    • 1
  1. 1.L. V. Pisarzhevskii Institute of Physical ChemistryNational Academy of Sciences of UkraineKyivUkraine
  2. 2.A. V. Bogatskii Physico-Chemical InstituteNational Academy of Sciences of UkraineOdesaUkraine
  3. 3.STARBURSTT CyberInstrumentation Consortium and Department of ChemistryYoungstown State UniversityYoungstownUSA
  4. 4.Department of ChemistryDrexel UniversityPhiladelphiaUSA

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