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Wiley, Chemistry - A European Journal, 28(20), p. 8636-8646, 2014

DOI: 10.1002/chem.201402415

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Comparative analysis of conjugated alkynyl chromophore-triazacyclononane ligands for sensitized emission of europium and terbium.

Journal article published in 2014 by Marine Soulié, Frédéric Latzko, Emmanuel Bourrier, Virginie Placide, Stephen J. Butler ORCID, Robert Pal, James W. Walton, Patrice L. Baldeck, Boris Le Guennic, Boris Le Guennic, Chantal Andraud, Jurriaan M. Zwier, Laurent Lamarque, David Parker, Olivier Maury ORCID
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This paper is available in a repository.

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Abstract

A series of europium and terbium complexes based on a functionalized triazacyclononane carboxylate or phosphinate macrocyclic ligand is described. The influence of the anionic group, that is, carboxylate, methylphosphinate, or phenylphosphinate, on the photophysical properties was studied and rationalized on the basis of DFT calculated structures. The nature, number, and position of electron-donating or electron-withdrawing aryl substituents were varied systematically within the same phenylethynyl scaffold in order to optimize the brightness of the corresponding europium complexes and investigate their two-photon absorption properties. Finally, the europium complexes were examined in cell-imaging applications, and selected terbium complexes were studied as potential oxygen sensors.