Sensitization of Eu(III) luminescence by donor-phenylethynyl-functionalized DTPA and DO3A macrocycles - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Comptes Rendus. Chimie Année : 2010

Sensitization of Eu(III) luminescence by donor-phenylethynyl-functionalized DTPA and DO3A macrocycles

Anthony d'Aleo
Mustapha Allali
  • Fonction : Auteur
Loic Toupet
Chantal Andraud
  • Fonction : Auteur
  • PersonId : 829281
Olivier Maury

Résumé

The synthesis and complexation to Eu(III) of two macrocyclic ligands functionalized donor-phenylethynyl-moieties as sensitizer is presented The two ligands based on DTPA bis-amide ([Eu(L(1))]) and DO3A ([Na][Eu(L(2))]) have been chosen because of their increased stability in water for potential applications as luminescent bioprobes for one- or two-photon excited scanning microscopy The DTPA and DO3A ligands possess oxygen or sulfur donor atoms, respectively, connected to a tnethyleneglycol (PEG) chain to ensure the water solubility. The optical properties were studied and reveal that ((Eu(L(1))1) present a lower brightness than the ([Nal[Eu(L(2))]) counterpart because of its inner sphere water molecule coordination that quenches the emission On the other hand, [NallEu(1.2)1 exhibits excellent spectroscopic properties with high quantum yield phi = 0.284, and brightness B = 10,220 M(-1)cm(-1)(defined as epsilon.phi) Unfortunately, the two-photon cross-section of this last complex was measured to be only 4 GM limiting its potential applications to linear microscopy. (C) 2010 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved. R SUM

Dates et versions

hal-01073301 , version 1 (09-10-2014)

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Citer

Anthony d'Aleo, Mustapha Allali, Alexandre Picot, Patrice L. Baldeck, Loic Toupet, et al.. Sensitization of Eu(III) luminescence by donor-phenylethynyl-functionalized DTPA and DO3A macrocycles. Comptes Rendus. Chimie, 2010, 13 (6-7), pp.681--690. ⟨10.1016/j.crci.2010.01.008⟩. ⟨hal-01073301⟩
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