Design of Dipicolinic Acid Ligands for the Two-Photon Sensitized Luminescence of Europium Complexes with Optimized Cross-Sections - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Inorganic Chemistry Année : 2008

Design of Dipicolinic Acid Ligands for the Two-Photon Sensitized Luminescence of Europium Complexes with Optimized Cross-Sections

Résumé

The multistep synthesis of an extensive series of push−pull donor-π-conjugated dipicolinic acid ligands is described. The charge transfer character of the ligand can be tuned by changing the donor group (CH2R, OR, SR, or NR2) or the nature of the conjugated backbone (phenyl, phenylethynyl, naphtylethynyl, bis(phenylethynyl), or chalcone). The photophysical properties of related D3 symmetric europium complexes (absorption and luminescence) were measured. Experiments using two-photon sensitized luminescence of a EuIII complex reveal large two-photon absorption (TPA) cross-section values (775 GM at 740 nm) in dichloromethane. Furthermore, some structure−property relationships can be derived from this systematic study, allowing an optimization of TPA properties of lanthanide complexes.

Dates et versions

hal-01320644 , version 1 (24-05-2016)

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Citer

Anthony D’aléo, Alexandre Picot, Patrice L. Baldeck, Chantal Andraud, Olivier Maury. Design of Dipicolinic Acid Ligands for the Two-Photon Sensitized Luminescence of Europium Complexes with Optimized Cross-Sections. Inorganic Chemistry, 2008, 47 (22), pp.10269-10279. ⟨10.1021/ic8012975⟩. ⟨hal-01320644⟩
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