Redox Modulation of Magnetic Slow Relaxation in a 4f-Based Single-Molecule Magnet with a 4d Carbon-Rich Ligand

Norel, Lucie; Feng, Min; Bernot, Kévin; Roisnel, Thierry; Guizouarn, Thierry; Costuas, Karine; Rigaut, Stéphane

doi:10.1021/ic403081y

Cited by 42 publications

(33 citation statements)

References 33 publications

(35 reference statements)

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“…A noticeable magnetic property to switch is the Single Molecule Magnet (SMM) behavior. Nevertheless, to the best of our knowledge, only scarce examples have been reported showing extinction of SMM property caused by electrochemical stimulus [34][35][36][37], or photo-induced electron transfer [38].…”

Section: Introductionmentioning

confidence: 99%

Switching Magnetic Properties by a Mechanical Motion

et al. 2018

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Switching magnetic properties have attracted a wide interest from inorganic chemist for the objectives of information storage and quantum computing at the molecular level. This review is focused on magnetic switches based on a mechanical motion, which is an innovative approach. Three main strategies to control magnetic properties by a mechanical motion have been developed in the literature and will be described. The first one (ligand-induced spin change) consists in modulating the ligand field strength by a configuration change of the ligand in spin-crossover complexes. The second one (coordination-induced spin-state switching) is based on a change in the coordination number of a metallic center that is triggered by the motion of one ligand. The third one uses the modulation of the exchange interaction between two spin-centers by a mechanical motion.

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Section: Introductionmentioning

confidence: 99%

Switching Magnetic Properties by a Mechanical Motion

et al. 2018

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“…One example was obtained by the association of a ruthenium carbon-rich complex with the Dy(tta) 3 unit. 63 The ruthenium moiety brings the redox activity and it has already proved its ability to switch conductivity, 64 non-linear optics 65 or luminescence. 66 process which is characterized by Δ = 32.8 K and τ 0 = 1.15 × 10 −7 s (H = 1200 Oe) and Δ = 43.5 K and τ 0 = 0.46 × 10 −7 s (H = 800 Oe) respectively.…”

Section: Metal-centred Redox-activitymentioning

confidence: 99%

Electro-activity and magnetic switching in lanthanide-based single-molecule magnets

Cador

Guennic

Pointillart

2019

Inorg. Chem. Front.

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“…19,20 The carbon-rich ruthenium -arylacetylide is a very interesting building block because it exhibits low oxidation potential with stable redox state and promotes strong electronic coupling between the metal and the organic ligands. [20][21][22][23] This organometallic moiety turned out to be an attractive platform in order to achieve redox event [19][20]24 and to introduce grafting groups for building functional redox active surfaces. [25][26][27] Before forming the SAMs, the organometallic complexes were thoroughly characterized in solution and the redox and optical properties (including NIR emissions) of the heterobimetallic compounds were found to be retained after the introduction of the anchoring hexylthiol chain.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Self-Assembled Monolayers of Redox-Active 4d–4f Heterobimetallic Complexes

et al. 2019

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In this work, we report the preparation of functional interfaces incorporating heterobimetallic systems consisting in the association of an electroactive carbon-rich ruthenium organometallic unit and a luminescent lanthanide ion (Ln= Eu 3+ and Yb 3+). The organometallic systems are functionalized with a terminal hexylthiol group for subsequent gold surface modification. Formation of self-assembled monolayers (SAMs) with these complex molecular architectures are thoroughly demonstrated by employing a combination of different techniques, including IRRAS spectroscopy, ellipsometry, contact angle and cyclic voltammetry measurements. The immobilized heterobimetallic systems show fast electrontransfer kinetics, hence are capable of fast electrochemical response. In addition, the characteristic electrochemical signals of the SAMs were found to be sensitive to the presence of lanthanide centers at the bipyridyl terminal units. A positive shift of the potential of the redox signal is readily observed for lanthanide complexes compared to the bare organometallic ligand. This effect is equally observed for pre-formed complexes and for on-surface complexation. Thus, an efficient ligating recruitment of europium and ytterbium cations at gold-modified electrodes is demonstrated, allowing for an easy electrochemical detection of

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Redox Modulation of Magnetic Slow Relaxation in a 4f-Based Single-Molecule Magnet with a 4d Carbon-Rich Ligand

Abstract: A ruthenium carbon-rich-based ligand that brings redox reversibility to a dysprosium-based single-molecule magnet is reported. Long-distance perturbation of the 4f ion is achieved upon oxidation, resulting in an overall enhancement of the magnetic slow relaxation.

Cited by 42 publications

References 33 publications

Switching Magnetic Properties by a Mechanical Motion

Switching Magnetic Properties by a Mechanical Motion

Electro-activity and magnetic switching in lanthanide-based single-molecule magnets

Self-Assembled Monolayers of Redox-Active 4d–4f Heterobimetallic Complexes

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