Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/217158
Title: Distributive Nd-to-Yb Energy Transfer within Pure [YbNdYb] Heterometallic Molecules
Author: Maniaki, Diamantoula
Sickinger, Annika
Barrios Moreno, Leoní Alejandra
Aguilà Avilés, David
Roubeau, Olivier
Settineri, Nicholas S.
Guyot, Yannick
Riobé, François
Maury, Olivier
Abad Galán, Laura
Aromí Bedmar, Guillem
Keywords: Sistemes complexos
Molècules
Transferència d'energia
Complex systems
Molecules
Energy transfer
Issue Date: 8-Feb-2023
Publisher: American Chemical Society
Abstract: Facile access to site-selective hetero-lanthanide molecules will open new avenues in the search of novel photophysical phenomena based on Ln-to-Ln′ energy transfer (ET). This challenge demands strategies to segregate efficiently different Ln metal ions among different positions in a molecule. We report here the one-step synthesis and structure of a pure [YbNdYb] (1) coordination complex featuring short Yb···Nd distances, ideal to investigate a potential distributive (i.e., from one donor to two acceptors) intramolecular ET from one Nd3+ ion to two Yb3+ centers within a well-characterized molecule. The difference in ionic radius is the mechanism allowing to allocate selectively both types of metal ion within the molecular structure, exploited with the simultaneous use of two β-diketone-type ligands. To assist the photophysical investigation of this heterometallic species, the analogues [YbLaYb] (2) and [LuNdLu] (3) have also been prepared. Sensitization of Yb3+ and Nd3+ in the last two complexes, respectively, was observed, with remarkably long decay times, facilitating the determination of the Nd-to-Yb ET within the [YbNdYb] composite. This ET was demonstrated by comparing the emission of iso-absorbant solutions of 1, 2, and 3 and through lifetime determinations in solution and solid state. The comparatively high efficiency of this process corroborates the facilitating effect of having two acceptors for the nonradiative decay of Nd3+ created within the [YbNdYb] molecule.
Note: Reproducció del document publicat a: https://doi.org/10.1021/acs.inorgchem.2c03940
It is part of: Inorganic Chemistry, 2023, vol. 62, p. 3106-3115
URI: https://hdl.handle.net/2445/217158
Related resource: https://doi.org/10.1021/acs.inorgchem.2c03940
ISSN: 0020-1669
Appears in Collections:Articles publicats en revistes (Química Inorgànica i Orgànica)

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