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Hetero-hexalanthanide Complexes: A New Synthetic Strategy for Molecular Thermometric Probes

Abstract : Reactions in solvothermal or microwave-assisted conditions between a hexanuclear rare-earth entity ([Ln] with Ln = Eu-Dy) and m-halogeno-benzoic acids lead to three series of isostructural complexes with respective chemical formulas [Ln(μ-OH)(HO)(NO)(3-cb)]·4CHCN, [Ln(μ-OH)(HO)(NO)(3-bb)]·6CHCN, and [Ln(μ-OH)(HO)(NO)(3-ib)]·6CHCN, where 3-cb, 3-bb, and 3-ib represent 3-chloro-, 3-bromo-, and 3-iodo-benzoate, respectively. These three series of compounds are almost isostructural. Their luminescent properties, in the solid and solution states, have been studied in detail and compared. This study shows that hexanuclear complexes own strong intermetallic energy transfers. This makes these complexes good candidates for thermometric probes in solid state or in solution state.
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Submitted on : Wednesday, December 11, 2019 - 2:40:37 PM
Last modification on : Wednesday, March 4, 2020 - 10:55:07 AM
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Haiyun Yao, Guillaume Calvez, Carole Daiguebonne, Kevin Bernot, Yan Suffren, et al.. Hetero-hexalanthanide Complexes: A New Synthetic Strategy for Molecular Thermometric Probes. Inorganic Chemistry, American Chemical Society, 2019, 58 (23), pp.16180-16193. ⟨10.1021/acs.inorgchem.9b02668⟩. ⟨hal-02397303⟩

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