Lunstroot, K., Driesen, K., Nockemann, P., Van Hecke, K., Van Meervelt, L., Goerller-Walrand, C., Binnemans, K., Bellayer, S., Viau, L., Le Bideau, J. & Vioux, A. (2009) Lanthanide-doped luminescent ionogels. Dalton Trans. 298–306.
Added by: Laurent Cournède (2016-03-10 21:41:25) |
Type de référence: Article DOI: 10.1039/b812292j Numéro d'identification (ISBN etc.): 1477-9226 Clé BibTeX: Lunstroot2009 Voir tous les détails bibliographiques |
Catégories: PMN Mots-clés: beta-diketonate complex, emission, europium complexes, imidazolium ionic liquids, infrared photoluminescence, photophysical properties, red electroluminescence, silica-derived networks, thin-films, tris(2-thenoyltrifluoroacetonato)lanthanide(iii) complexes Créateurs: Bellayer, Binnemans, Driesen, Goerller-Walrand, Le Bideau, Lunstroot, Nockemann, Van Hecke, Van Meervelt, Viau, Vioux Collection: Dalton Trans. |
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Résumé |
Ionogels are solid oxide host networks con. ning at a meso-scale ionic liquids, and retaining their liquid nature. Ionogels were obtained by dissolving lanthanide(III) complexes in the ionic liquid 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide, [C(6)mim][Tf(2)N], followed by confinement of the lanthanide-doped ionic liquid mixtures in the pores of a nano-porous silica network. [C(6)mim][Ln(tta)(4)], where tta is 2-thenoyltrifluoroacetonate and Ln = Nd, Sm, Eu, Ho, Er, Yb, and [choline](3)[Tb(dpa)(3)], where dpa = pyridine-2,6-dicarboxylate (dipicolinate), were chosen as the lanthanide complexes. The ionogels are luminescent, ion-conductive inorganic-organic hybrid materials. Depending on the lanthanide(III) ion, emission in the visible or the near-infrared regions of the electromagnetic spectrum was observed. The work presented herein highlights that the confinement did not disturb the first coordination sphere of the lanthanide ions and also showed the excellent luminescence performance of the lanthanide tetrakis beta-diketonate complexes. The crystal structures of the complexes [C(6)mim][Yb(tta)(4)] and [choline](3)[Tb(dpa)(3)] are reported.
Added by: Laurent Cournède |