Issue 37, 2023
From the journal:

RSC Advances

Tetranuclear lanthanide-based silsesquioxanes: towards a combination of a slow relaxation of the magnetization and a luminescent thermometry†

Gautier Félix, ORCID logo a   Saad Sene, ORCID logo a   Alena Kulakova,abc   Alexey N. Bilyachenko, ORCID logo *bc   Victor N. Khrustalev, ORCID logo cd   Elena S. Shubina, ORCID logo b   Yannick Guari ORCID logo a  and  Joulia Larionova ORCID logo *a  

* Corresponding authors

a ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
E-mail: joulia.larionova@umontpellier.fr

b A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilova Str., Moscow, Russia
E-mail: bilyachenko@ineos.ac.ru

c Peoples' Friendship University of Russia, (RUDN University), Miklukho-Maklay Str., 6, Moscow, Russia

d Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia

Abstract

Lanthanide-based silsesquioxanes constitute an emerging family of cage-like metallasilsesquioxanes with exciting optical and magnetic properties. We report here the synthesis, structures and luminescence properties of a series of tetranuclear lanthanide-silsesquioxane compounds of general formula [NEt4]2[(Ph4Si4O8)2(Ln/Ln′)4(NO3)6(EtOH)2(MeCN)2]·4(MeCN) with different lanthanide ions (where Ln/Ln′ = Dy3+/Eu3+ (1), Dy3+/Tb3+ (2) and Eu3+/Tb3+/Y3+ (3)) and investigate the impact of the lanthanide ions combination on magnetic and photo-luminescent properties. Compound 1 behaves as a field-induced Single Molecule Magnet (SMM) and presents temperature-dependent luminescence characteristics of Eu3+ making it an emissive thermometer working in the temperature range 293–373 K with the maximum relative sensitivity of 1.15% K−1 achieved at 293 K. Compounds 2 and 3 are paramagnets, which demonstrate a characteristic photoluminescence with Dy3+ to Tb3+ and Tb3+ to Eu3+ energy transfers, respectively.

Graphical abstract: Tetranuclear lanthanide-based silsesquioxanes: towards a combination of a slow relaxation of the magnetization and a luminescent thermometry

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Article information

DOI
https://doi.org/10.1039/D3RA04901A
Article type
Paper
Submitted
20 Jul 2023
Accepted
28 Aug 2023
First published
04 Sep 2023
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2023,13, 26302-26312

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Tetranuclear lanthanide-based silsesquioxanes: towards a combination of a slow relaxation of the magnetization and a luminescent thermometry

G. Félix, S. Sene, A. Kulakova, A. N. Bilyachenko, V. N. Khrustalev, E. S. Shubina, Y. Guari and J. Larionova, RSC Adv., 2023, 13, 26302 DOI: 10.1039/D3RA04901A

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