Title: Rare-earth quinolinates: Infrared-emitting molecular materials with a rich structural chemistry
Authors: Van Deun, Rik ×
Fias, Pascal
Nockemann, Peter
Schepers, An
Parac-Vogt, Tatjana
Van Hecke, Kristof
Van Meervelt, Luc
Binnemans, Koen #
Issue Date: 2004
Publisher: Amer chemical soc
Series Title: Inorganic Chemistry vol:43 issue:26 pages:8461-8469
Abstract: Near-infrared-emitting rare-earth chelates based on 8-hydroxyquinoline have appeared frequently in recent literature, because they are promising candidates for active components in near-infrared-luminescent optical devices, such as optical amplifiers, organic light-emitting diodes, .... Unfortunately, the absence of a full structural investigation of these rare-earth quinolinates is hampering the further development of rare-earth quinolinate based materials, because the luminescence output cannot be related to the structural properties. After an elaborate structural elucidation of the rare-earth quinolinate chemistry we can conclude that basically three types of structures can be formed, depending on the reaction conditions: tris complexes, corresponding to a 1:3 metal-to-ligand ratio, tetrakis complexes, corresponding to a 1:4 metal-to-ligand ratio, and trimeric complexes, with a 3:8 metal-to-ligand ratio. The intensity of the emitted near-infrared luminescence of the erbium(Ill) complexes is highest for the tetrakis complexes of the dihalogenated 8-hydroxyquinolinates.
ISSN: 0020-1669
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Design and Synthesis
Molecular Imaging and Photonics
Biochemistry, Molecular and Structural Biology Section
× corresponding author
# (joint) last author

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