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Comparative Analysis of Conjugated Alkynyl Chromophore–Triazacyclononane Ligands for Sensitized Emission of Europium and Terbium
Author(s) -
Soulié Marine,
Latzko Frédéric,
Bourrier Emmanuel,
Placide Virginie,
Butler Stephen J.,
Pal Robert,
Walton James W.,
Baldeck Patrice L.,
Le Guennic Boris,
Andraud Chantal,
Zwier Jurriaan M.,
Lamarque Laurent,
Parker David,
Maury Olivier
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201402415
Subject(s) - terbium , europium , chromophore , chemistry , carboxylate , aryl , photochemistry , ligand (biochemistry) , conjugated system , inorganic chemistry , organic chemistry , polymer , ion , biochemistry , alkyl , receptor
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.