Heterometallic Co–Dy SMMs grafted on iron oxide nanoparticles

Piquer, Lidia Rosado; Dreiser, Jan; Sañudo, E. Carolina

doi:10.1039/d1dt01519b

Cited by 7 publications

(8 citation statements)

References 47 publications

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“…Furthermore, the M versus H / T curves of the two title clusters at 2, 3, and 5 K cannot be superimposed on each other. These features, which were revealed in M versus H and M versus H / T curves, indicate the occurrence of low-lying energy states or anisotropies for the given complexes. − In addition, the two title clusters show only tiny magnetic hysteresis loops at 2 K, which are shown in Figure S28.…”

Section: Resultsmentioning

confidence: 93%

Two Heterometallic Nanoclusters [Dy^III₄Ni^II₈] and [Dy^III₁₀Mn^III₄Mn^II₂]: Structure, Assembly Mechanism, and Magnetic Properties

Zhu

et al. 2022

Inorg. Chem.

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A full understanding of the assembly mechanisms of coordination complexes is of great importance for a directional synthesis under control. We thus explored here the formation mechanisms of the two new heterometallic nanoclusters [DyIII 4NiII 8(μ3-OH)8(L)8(OAc)4(H2O)4]·3.25EtOH·4CH3CN (1) and [DyIII 10MnIII 4MnII 2O4(OH)12(OAc)16(L)4(HL)2(EtOH)2]·2EtOH·2CH3CN·2H2O (2) with different cubane-based squarelike ring structures, which were obtained from the reactions of 4-bromo-2-[(2-hydroxypropylimino)methyl]phenol (H2L) with Dy(NO)3·6H2O and the transition metal salt Ni(OAc)2·4H2O or Mn(OAc)2·4H2O. The high-resolution electrospray ionization mass spectrometry (HRESI-MS) tests showed that the skeletons of clusters 1 and 2 have a high stability under the measurement conditions for HRESI-MS. The intermediates formed in the reaction courses of clusters 1 and 2 were tracked using time-dependent HRESI-MS, which helped to determine the proposed hierarchical assembly mechanisms for 1 (H2L → NiL → Ni2L2 → Ni3L4 → Ni4L4 → DyNi4L5 → Dy2Ni6L6 → Dy3Ni6L6 → Dy3Ni7L7 → Dy4Ni8L8) and 2 (H2L → MnL → DyMnL → DyMn2L → Dy2Mn2L x → Dy8Mn2L2 → Dy10Mn2L2 → Dy10Mn6L x and H2L → DyL → Dy4L2 → Dy6L2 → Dy8Mn2L2 → Dy10Mn2L2 → Dy10Mn6L x ). This is one of the rare examples of investigating the assembly mechanisms of 3d–4f heterometallic clusters. Magnetic studies indicated that the title complexes both show slow magnetic relaxation behaviors and cluster 1 is a field-induced single-molecule magnet.

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Section: Resultsmentioning

confidence: 93%

Two Heterometallic Nanoclusters [Dy^III₄Ni^II₈] and [Dy^III₁₀Mn^III₄Mn^II₂]: Structure, Assembly Mechanism, and Magnetic Properties

Zhu

et al. 2022

Inorg. Chem.

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“…The intermediate layers are self-assembled monolayers (SAMs) of organic molecules, with ref. 34 or without 28 , 30 , 31 , 33 long tethered organic groups. These two cases complicate the use of ESR-STM.…”

Section: Molecular Properties On a Surfacementioning

confidence: 99%

“…It is now clear that substrate phonons and the electron cloud of metallic substrates can couple with the magnetic molecules and affect the nanomagnets properties: to solve this, intermediate or buffer layers have been used with success, for example in the case of [Tb(Pc) 2 ] SMM, (Pc = phthalocyanine ligand), from now on TbPc 29 What happens with other compounds, with more complex structures than the TbPc SMM? There are several examples that show that a buffer layer (that can be organic or inorganic in nature) can be used effectively to ensure a weak molecule-surface interaction 28 , 30 – 32 In fact, the organic buffer layer can also be used to graft the molecule on a substrate 33 – 35 …”

Section: Introductionmentioning

confidence: 99%

Challenges for exploiting nanomagnet properties on surfaces

Gabarró-Riera,

Sañudo

2024

Commun Chem

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Molecular complexes with single-molecule magnet (SMM) or qubit properties, commonly called molecular nanomagnets, are great candidates for information storage or quantum information processing technologies. However, the implementation of molecular nanomagnets in devices for the above-mentioned applications requires controlled surface deposition and addressing the nanomagnets' properties on the surface. This Perspectives paper gives a brief overview of molecular properties on a surface relevant for magnetic molecules and how they are affected when the molecules interact with a surface; then, we focus on systems of increasing complexity, where the relevant SMMs and qubit properties have been observed for the molecules deposited on surfaces; finally, future perspectives, including possible ways of overcoming the problems encountered so far are discussed.

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“…In analyzing possible nanostructured substrates for the deposition of single-molecule magnets, we will start with the ‘most nanometric’ ones, 0D structures, because their size is often comparable to the SMM being deposited, making the properties of the resulting nanocomposites potentially unique. Among them, it is reasonable to outline two groups—nanoparticles [ 116 , 117 ] and fullerenes [ 118 , 119 ]—because of their profusion in constituting hybrids with SMMs.…”

Section: Types Of Nanostructures As Substrates For Smmsmentioning

confidence: 99%

“…They exhibit large specific surface area, ease of organization on surfaces, and reliable solubility depending on particles’ composition—features that make them promising candidates for functionalization with SMMs, which we will try to prove by relying on particular literature examples later on in the next sections. Within the field of molecular magnetism, the most frequently employed nanoparticles are those consisting of gold [ 24 , 120 , 121 , 122 ], iron or iron oxide [ 116 ], and silica [ 114 , 123 ].…”

Section: Types Of Nanostructures As Substrates For Smmsmentioning

confidence: 99%

Nanostructures as the Substrate for Single-Molecule Magnet Deposition

Adamek,

Pastukh,

Laskowska

et al. 2023

IJMS

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Anchoringsingle-molecule magnets (SMMs) on the surface of nanostructures is gaining particular interest in the field of molecular magnetism. The accurate organization of SMMs on low-dimensional substrates enables controlled interactions and the possibility of individual molecules’ manipulation, paving the route for a broad range of nanotechnological applications. In this comprehensive review article, the most studied types of SMMs are presented, and the quantum-mechanical origin of their magnetic behavior is described. The nanostructured matrices were grouped and characterized to outline to the reader their relevance for subsequent compounding with SMMs. Particular attention was paid to the fact that this process must be carried out in such a way as to preserve the initial functionality and properties of the molecules. Therefore, the work also includes a discussion of issues concerning both the methods of synthesis of the systems in question as well as advanced measurement techniques of the resulting complexes. A great deal of attention was also focused on the issue of surface–molecule interaction, which can affect the magnetic properties of SMMs, causing molecular crystal field distortion or magnetic anisotropy modification, which affects quantum tunneling or magnetic hysteresis, respectively. In our opinion, the analysis of the literature carried out in this way will greatly help the reader to design SMM-nanostructure systems.

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Heterometallic Co–Dy SMMs grafted on iron oxide nanoparticles

Abstract: The heterometallic 3d-4f SMM [Co4Dy(OH)2(SALOH)5(chp)4(MeCN)(H2O)2] (1) has been deposited onto iron oxide nanoparticles (NP) with an oleate self-assembled monolayer (SAM) as surfactant. The hybrid molecular-inorganic system 1-NP has been thoroughly...

Cited by 7 publications

References 47 publications

Two Heterometallic Nanoclusters [Dy^III₄Ni^II₈] and [Dy^III₁₀Mn^III₄Mn^II₂]: Structure, Assembly Mechanism, and Magnetic Properties

Two Heterometallic Nanoclusters [Dy^III₄Ni^II₈] and [Dy^III₁₀Mn^III₄Mn^II₂]: Structure, Assembly Mechanism, and Magnetic Properties

Challenges for exploiting nanomagnet properties on surfaces

Nanostructures as the Substrate for Single-Molecule Magnet Deposition

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Heterometallic Co–Dy SMMs grafted on iron oxide nanoparticles

Abstract: The heterometallic 3d-4f SMM [Co4Dy(OH)2(SALOH)5(chp)4(MeCN)(H2O)2] (1) has been deposited onto iron oxide nanoparticles (NP) with an oleate self-assembled monolayer (SAM) as surfactant. The hybrid molecular-inorganic system 1-NP has been thoroughly...

Cited by 7 publications

References 47 publications

Two Heterometallic Nanoclusters [DyIII4NiII8] and [DyIII10MnIII4MnII2]: Structure, Assembly Mechanism, and Magnetic Properties

Two Heterometallic Nanoclusters [DyIII4NiII8] and [DyIII10MnIII4MnII2]: Structure, Assembly Mechanism, and Magnetic Properties

Challenges for exploiting nanomagnet properties on surfaces

Nanostructures as the Substrate for Single-Molecule Magnet Deposition

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Product

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Two Heterometallic Nanoclusters [Dy^III₄Ni^II₈] and [Dy^III₁₀Mn^III₄Mn^II₂]: Structure, Assembly Mechanism, and Magnetic Properties

Two Heterometallic Nanoclusters [Dy^III₄Ni^II₈] and [Dy^III₁₀Mn^III₄Mn^II₂]: Structure, Assembly Mechanism, and Magnetic Properties