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Article Dans Une Revue Journal of Materials Chemistry C Année : 2014

Heteronuclear lanthanide-based coordination polymers exhibiting tunable multiple emission spectra

Résumé

Reactions in water at room temperature between lanthanide ions and 5-hydroxy-1,3-benzene-dicarboxylic acid hereafter referred to as H2(hip) lead to a new family of lanthanide-based hetero-nuclear compounds with the general chemical formula [Ln2 2xLn2x 0(hip)2(H2O)10,(hip),4H2O]N where Ln and Ln0 ¼ Pr-Lu or Y and where 0 # x # 1. The physico-chemical properties of this family have been characterized by PXRD, TDXD, TG/TD, EDS, SEM, 89Y solid state NMR spectroscopy and optical spectroscopy. The luminescent properties of these compounds are studied in detail. This study reveals that the competition between intermetallic energy transfer and photo-induced electron transfer gives rise to complex multiple emission spectra. It is therefore possible, for some Ln/Ln0 compositions, to obtain green, yellow or red emission by tuning the excitation wavelength over a 50 nm range. From a global point of view, this study shows that this series of compounds could be of great interest as far as luminescent coordination polymers usable as taggants for the fight against counterfeiting are aimed.
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Dates et versions

hal-01016002 , version 1 (27-06-2014)

Identifiants

Citer

Xiao Fan, Stéphane Freslon, Carole Daiguebonne, Guillaume Calvez, Laurent Le Pollès, et al.. Heteronuclear lanthanide-based coordination polymers exhibiting tunable multiple emission spectra. Journal of Materials Chemistry C, 2014, 2, pp.5510-5525. ⟨10.1039/c4tc00506f⟩. ⟨hal-01016002⟩
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