Stable Lanthanide Luminescence Agents Highly Emissive in Aqueous Solution: Multidentate 2-Hydroxyisophthalamide Complexes of Sm 3+ , Eu 3+ , Tb 3+ , Dy 3+

Abstract : Efficient lanthanide (Ln) luminescent probes require good ligand-to-metal energy transfer and high aqueous stability. A family of ligands based on 2-hydroxyisophthalamide chelating units is reported. These form highly stable, eight-coordinate Ln complexes. Several of these (Ln = Sm, Eu, Tb, Dy) emit in the visible region with good ligand-to-lanthanide energy transfer. The absolute quantum yields of the two Tb complexes studies (Phi = 0.59, 0.61) and high absorbance make these the brightest luminescent probes for time-resolved detection; the emission spectrum of one complex can be seen down to 10-15 M. The low overlap of the four different Ln complexes enables their simultaneous detection and discrimination.
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https://hal.archives-ouvertes.fr/hal-02090730
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Submitted on : Friday, April 5, 2019 - 10:03:54 AM
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Stephane Petoud, Seth Cohen, Jean-Claude Bunzli, Kenneth Raymond. Stable Lanthanide Luminescence Agents Highly Emissive in Aqueous Solution: Multidentate 2-Hydroxyisophthalamide Complexes of Sm 3+ , Eu 3+ , Tb 3+ , Dy 3+. Journal of the American Chemical Society, American Chemical Society, 2003, 125 (44), pp.13324-13325. ⟨10.1021/ja0379363⟩. ⟨hal-02090730⟩

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