Exploring the dual functionality of an ytterbium complex for luminescence thermometry and slow magnetic relaxation

Brunet, Gabriel; Marin, Riccardo; Monk, Melissa-Jane; Resch‐Genger, Ute; Gálico, Diogo A.; Sígoli, Fernando Aparecido; Suturina, Elizaveta A.; Hemmer, Eva; Murugesu, Muralee

doi:10.1039/c9sc00343f

Cited by 98 publications

(119 citation statements)

References 81 publications

(137 reference statements)

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“…Among the lanthanide ions explored for the preparation of luminescent Ln‐SMMs, [5–8] the late Kramers ion Yb 3+ has shown great promise. Recently, two examples of luminescent Yb‐SMMs with built‐in thermometric capability were published [9, 10] . Furthermore, a molecular ferroelectric Yb 3+ complex possessing room temperature magnetoelectric coupling, a rarity for molecular compounds, was reported recently by Long and co‐workers [11] .…”

Section: Introductionmentioning

confidence: 99%

Asymmetric Ring Opening in a Tetrazine‐Based Ligand Affords a Tetranuclear Opto‐Magnetic Ytterbium Complex

Richardson

Marin

Zhang

et al. 2020

Chemistry A European J

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We report the formation of a tetranuclear lanthanide cluster, [Yb4(bpzch)2(fod)10] (1), which occurs from a serendipitous ring opening of the functionalised tetrazine bridging ligand, bpztz (3,6‐dipyrazin‐2‐yl‐1,2,4,5‐tetrazine) upon reacting with Yb(fod)3 (fod−=6,6,7,7,8,8,8‐heptafluoro‐2,2‐dimethyl‐3,5‐octandionate). Compound 1 was structurally elucidated via single‐crystal X‐ray crystallography and subsequently magnetically and spectroscopically characterised to analyse its magnetisation dynamics and its luminescence behaviour. Computational studies validate the observed MJ energy levels attained by spectroscopy and provides a clearer picture of the slow relaxation of the magnetisation dynamics and relaxation pathways. These studies demonstrate that 1 acts as a single‐molecule magnet (SMM) under an applied magnetic field in which the relaxation occurs via a combination of Raman, direct, and quantum tunnelling processes, a behaviour further rationalised analysing the luminescent properties. This marks the first lanthanide‐containing molecule that forms by means of an asymmetric tetrazine decomposition.

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Section: Introductionmentioning

confidence: 99%

Asymmetric Ring Opening in a Tetrazine‐Based Ligand Affords a Tetranuclear Opto‐Magnetic Ytterbium Complex

Richardson

Marin

Zhang

et al. 2020

Chemistry A European J

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“…Nesse sentido, o campo da nanotermometria óptica utilizando a luminescência de íons lantanídeos é um campo em crescente ascensão, não apenas com a utilização de LOFs, mas também de nanopartículas sólidas e coloidais, com uma imensa gama de aplicações para o sensoriamento térmico em nanoescala. [154][155][156][157][158] Além das aplicações como materiais luminescentes, as TR são fundamentais no campo dos materiais magnéticos. Atualmente, os magnetos de Nd 2 Fe 14 B oferecem uma melhor relação potência-peso na indústria de ímãs e ainda mais alta eficiência na conversão de energia elétrica em energia mecânica em motores, ou vice-versa em geradores.…”

Section: Aplicaçõesunclassified

Terras Raras: Tabela Periódica, Descobrimento, Exploração No Brasil E Aplicações

2019

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In the ~150 years comprised between the discovery of yttrium (1794) and promethium (1947), the rare earth metals were an incomplete chapter and a stone in the shoe of the periodic classification of the chemical elements. This group of 17 elements with remarkable chemical similarity raised confusion on many brilliant scientists, including Mendeleev, and led to the consolidation of many theories in Chemistry, from atomic spectroscopy to quantum theory. Nowadays we know that the special properties of these elements arise from filling 4f orbitals, which results in unique spectroscopic, magnetic and catalytic behavior. Such properties make rare earths essential elements on optical devices, lasers, telecommunications and magnetic materials for sustainable energy. The importance of rare earths far exceeds the science and technology domains, reaching the same level of other strategic materials for energy and defense. Hence, this work presents a brief discussion about the historical path of the rare earth elements in the Periodic Table and about the exploration of these resources in Brazil, detailing some of the extractive activities since the 19 th century and some perspectives for future activities concerning this group of elements in Brazil.

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“…The latter is further split into M J states due to the crystal field effect that can be detected by well‐resolved emission spectroscopy. In other words both lanthanide luminescence and magnetism have the same origin and lanthanide luminescence could be seen as a photography of the energy splitting and could be an experimental probe to endorse the magnetic and computational results , . Since the Dy(III) emission of complexes 1 and 2 was not observable because of the strong absorption of the ligands L 1 and L 2 in the whole visible range, the Yb(III) analogues [Yb(hfac) 3 ( L 1 )] ( 3 ) and [Yb(hfac) 3 ( L 2 )] ( 4 ) were synthetized .…”

Section: Supramolecular Effect On Single‐molecule Magnet Behaviormentioning

confidence: 99%

Decorated Tetrathiafulvalene‐Based Ligands: Powerful Chemical Tools for the Design of Single‐Molecule Magnets

et al. 2019

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This Minireview covers the design and characterization of coordination lanthanide complexes involving TTF-based ligands. The specific design of TTF-based ligands allowed the isolation of complexes with magnetic properties such as Single-Molecule Magnets (SMMs) behavior and the studies of magnetic modulations due to supramolecular interaction, molecular engineering, magnetic dilution as well as isotopic enrichment. A careful design leads to TTF-based ligands displaying several coordination sites in order to rationally elaborate polynuclear [a] 148The research activities of Olivier Cador started in 1994 in Bordeaux (France). He mainly focused on the studies of the magnetic properties of systems with various dimensionalities, from nanoparticles to isolated molecules which show quantum behavior, and finally to magnets with atypical behavior. In Rennes, his aim was at first to develop the synergy between electronic properties, such as magnetism and electrical conductivity, in new molecular edifices based on organic/inorganic networks. He orients now its research field to Single Molecule Magnets (SMMs) based on lanthanide. 149Assuming that hydrogen bonds are broken in dichloromethane solution, the first hypothesis was to attribute the nonobservation of the slow magnetic relaxation to the presence Eur.A very challenging synthetic route is the design of TTF core functionalized with stable organic radical (S = 1/2) able to realize coordination reaction with metal centers. Such strategy is promising because the organic radical plays the magnetic relay Eur.

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Exploring the dual functionality of an ytterbium complex for luminescence thermometry and slow magnetic relaxation

Abstract: A combined experimental and theoretical approach reveals the intricacies related to an YbIII complex, which functions dually as a SMM and a luminescent thermometer.

Cited by 98 publications

References 81 publications

Asymmetric Ring Opening in a Tetrazine‐Based Ligand Affords a Tetranuclear Opto‐Magnetic Ytterbium Complex

Asymmetric Ring Opening in a Tetrazine‐Based Ligand Affords a Tetranuclear Opto‐Magnetic Ytterbium Complex

Terras Raras: Tabela Periódica, Descobrimento, Exploração No Brasil E Aplicações

Decorated Tetrathiafulvalene‐Based Ligands: Powerful Chemical Tools for the Design of Single‐Molecule Magnets

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