Issue 3, 2022

Structure, reactivity and luminescence studies of triphenylsiloxide complexes of tetravalent lanthanides

Abstract

Among the 14 lanthanide elements (Ce–Lu), until recently, the tetravalent oxidation state was readily accessible in solution only for cerium while Pr(IV), Nd(IV), Dy(IV) and Tb(IV) had only been detected in the solid state. The triphenylsiloxide ligand recently allowed the isolation of molecular complexes of Tb(IV) and Pr(IV) providing an unique opportunity of investigating the luminescent properties of Ln(IV) ions. Here we have expanded the coordination studies of the triphenylsiloxide ligand with Ln(III) and Ln(IV) ions and we report the first observed luminescence emission spectra of Pr(IV) complexes which are assigned to a ligand-based emission on the basis of the measured lifetime and computational studies. Binding of the ligand to the Pr(IV) ion leads to an unprecedented large shift of the ligand triplet state which is relevant for future applications in materials science.

Graphical abstract: Structure, reactivity and luminescence studies of triphenylsiloxide complexes of tetravalent lanthanides

Supplementary files

Article information

Article type
Edge Article
Submitted
06 oct. 2021
Accepted
15 déc. 2021
First published
16 déc. 2021
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2022,13, 681-691

Structure, reactivity and luminescence studies of triphenylsiloxide complexes of tetravalent lanthanides

A. R. Willauer, I. Douair, A. Chauvin, F. Fadaei-Tirani, J. G. Bünzli, L. Maron and M. Mazzanti, Chem. Sci., 2022, 13, 681 DOI: 10.1039/D1SC05517H

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