Highly Luminescent, Neutral, Nine‐Coordinate Lanthanide(III) Complexes

Autor:	Marita Mehlstäubl, Luisa De Cola, Gregg Kottas, Roland Fröhlich
Rok vydání:	2007
Předmět:	Inorganic Chemistry Lanthanide chemistry.chemical_compound Coordination sphere Chemistry Ligand Energy transfer Physical chemistry Triplet state Luminescence Photochemistry Acetonitrile
Zdroj:	European Journal of Inorganic Chemistry. 2007:3465-3468
ISSN:	1099-0682 1434-1948
DOI:	10.1002/ejic.200700514
Popis:	Using a simple ligand design, we have prepared neutral, nine-coordinate lanthanide complexes that exclude water from the inner coordination sphere, thus leading to high emission quantum yields and long excited-state lifetimes. The complexes form in high synthetic yields (49–87 %) by simply mixing the ligand and the lanthanide. Visible luminescence from EuIII (Φ = 60 %, τ = 2.2 ms) and TbIII (Φ = 7 %, τ = 0.2 ms) and near-infrared luminescence from YbIII (Φ = 0.7 %), NdIII and ErIII were observed in acetonitrile and CH2Cl2 at room temperature. In addition, the GdIII complex was prepared to gain information about the triplet state of the ligand. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
Databáze:	OpenAIRE
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