Europium complexes of a novel ethylenedioxythiophene-derivatized bis(pyrazolyl)pyridine ligand exhibiting efficient lanthanide sensitization

Julie M. Stanley, Xunjin ZHU, Xiaoping Yang, Bradley J. Holliday

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)

Abstract

A new class of highly luminescent nine-coordinated europium(III) tris(β-diketonate) bis[(ethylenedioxythiophene)pyrazolyl]pyridine (L) complexes has been synthesized and the photophysical properties studied: 1 =Eu(hfac)3(L); 2=Eu(tta)3(L); 3=Eu(btfac)3(L). The solid-state structure of complex 1 has been determined by single-crystal X-ray crystallography and shows the geometry of the local coordination environment around the EuIII ion to be a slightly distorted tricapped trigonal prism. Luminescence lifetimes were found to be 581, 473, and 576 μs for complexes 1-3, respectively. Absolute quantum yields for complexes 1-3 were measured as 16.4 ± 1.4%, 27.5 ± 1.2%, and 22.2% ± 0.3%, respectively.

Original languageEnglish
Pages (from-to)2035-2037
Number of pages3
JournalInorganic Chemistry
Volume49
Issue number5
DOIs
Publication statusPublished - 1 Mar 2010

Scopus Subject Areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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