Characterization and Luminescence Properties of Lanthanide-Based Polynuclear Complexes Nanoaggregates
For the first time, hexanuclear complexes with general chemical formula [Ln6O(OH)8(NO3)6(H2O) n ]2+ with n = 12 for Ln = Sm–Lu and Y and n = 14 for Ln = Pr and Nd were stabilized as nanoaggregates in ethylene glycol (EG). These unprecedented nanoaggregates were structurally characterized by 89Y an...
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Veröffentlicht in: | Inorganic chemistry 2015-06, Vol.54 (12), p.6043-6054 |
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creator | Le Natur, François Calvez, Guillaume Guégan, Jean-Paul Le Pollès, Laurent Trivelli, Xavier Bernot, Kevin Daiguebonne, Carole Neaime, Chrystelle Costuas, Karine Grasset, Fabien Guillou, Olivier |
description | For the first time, hexanuclear complexes with general chemical formula [Ln6O(OH)8(NO3)6(H2O) n ]2+ with n = 12 for Ln = Sm–Lu and Y and n = 14 for Ln = Pr and Nd were stabilized as nanoaggregates in ethylene glycol (EG). These unprecedented nanoaggregates were structurally characterized by 89Y and 1H NMR spectroscopy, UV–vis absorption and luminescence spectroscopies, electrospray ionization mass spectrometry, diffusion ordered spectroscopy, transmission electron microscopy, and dynamic light scattering. These nanoaggregates present a 200 nm mean solvodynamic diameter. In these nanoaggregates, hexanuclear complexes are isolated and solvated by EG molecules. The replacement of ethylene glycol by 2-hydroxybenzyl alcohol provides new nanoaggregates that present an antenna effect toward lanthanide ions. This results in a significant enhancement of the luminescence properties of the aggregates and demonstrates the suitability of the strategy for obtaining highly tunable luminescent solutions. |
doi_str_mv | 10.1021/acs.inorgchem.5b00947 |
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title | Characterization and Luminescence Properties of Lanthanide-Based Polynuclear Complexes Nanoaggregates |
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