Circularly polarized luminescence in enantiopure europium and terbium complexes with modular, all-oxygen donor ligands

Seitz, Michael, Do, King, Ingram, Andrew J., Moore, Evan G., Muller, Gilles and Raymond, Kenneth N. (2009) Circularly polarized luminescence in enantiopure europium and terbium complexes with modular, all-oxygen donor ligands. Inorganic Chemistry, 48 17: 8469-8479. doi:10.1021/ic901079s


Author Seitz, Michael
Do, King
Ingram, Andrew J.
Moore, Evan G.
Muller, Gilles
Raymond, Kenneth N.
Title Circularly polarized luminescence in enantiopure europium and terbium complexes with modular, all-oxygen donor ligands
Journal name Inorganic Chemistry   Check publisher's open access policy
ISSN 0020-1669
1520-510X
Publication date 2009-09-01
Year available 2009
Sub-type Article (original research)
DOI 10.1021/ic901079s
Open Access Status Not Open Access
Volume 48
Issue 17
Start page 8469
End page 8479
Total pages 11
Place of publication Washington, DC United States
Publisher American Chemical Society
Language eng
Formatted abstract
The modular syntheses of three new octadentate, enantiopure ligands are reported, one with the bidentate chelating unit 2-hydroxyisophthalamide (IAM) and two with bidentate 1 -hydroxy-2-pyridinone (1,2-HOPO) units. A new design principle is introduced for the chiral, non-racemic hexamines which constitute the central backbones for the presented class of ligands. The terbium(III) complex of the IAM ligand, as well as the europium(III) complexes of the 1,2-HOPO ligands, are synthesized and characterized by various techniques (NMR, UV, CD, luminescence spectroscopy). All species exhibit excellent stability and moderate to high luminescence efficiency (quantum yields Φ Eu = 0.05-0.08 and φ Tb = 0.30-0.57) in aqueous solution at physiological pH. Special focus is put onto the properties of the complexes in regard to circularly polarized luminescence (CPL). The maximum luminescence dissymmetry factors (g lum) in aqueous solution are high with |g lum|max = 0.08-0.40. Together with the very favorable general properties (good stability, high quantum yields, long lifetimes), the presented lanthanide complexes can be considered as good candidates for analytical probes based on CPL in biologically relevant environments.
Keyword Chiral Lanthanide Complexes
Metal Complex
Spectroscopy
Sensitizer
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemistry and Molecular Biosciences
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 21 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 22 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Fri, 30 Aug 2013, 05:34:27 EST by Evan Moore on behalf of School of Chemistry & Molecular Biosciences