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

Influence of Uncoordinated Anion-Radical TCNQ(a) 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 and V. V. Pavlishchuk
Theoretical and experimental chemistry, v 50(3)
01 Jul 2014

Abstract

Chemistry Chemistry, Multidisciplinary Physical Sciences Science & Technology
Complexes of Eu3+ and Tb3+ with tris(3-(2-pyridyl)pyrazolyl)borate (Tp(Py-)) of composition [Tp (2) (Py) Ln]Tp (Py) and [Tp (2) (Py) Ln]TCNQ (center dot) show metal-centered luminescence even in the presence of efficient luminescence quencher such as TCNQ(a) as the counter-ion. The electroluminescence spectrum of an ITO/PVK/[Tp (2) (Py) Tb]Tp(Py)/Al (PVK = poly(9-vinyl)carbazole) device showed Tb3+ emission. When [Tp (2) (Py) Ln]TCNQ (center dot) 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(a) anion-radicals. Very weak emission of the Tb3+ ion was detected in the LED with the [Tp (2) (Py) Ln]TCNQ (center dot) complex.

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Collaboration types
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Web of Science research areas
Chemistry, Multidisciplinary
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