1
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Curti L, Prado Y, Michel A, Talbot D, Baptiste B, Otero E, Ohresser P, Journaux Y, Cartier-Dit-Moulin C, Dupuis V, Fleury B, Sainctavit P, Arrio MA, Fresnais J, Lisnard L. Room-temperature-persistent magnetic interaction between coordination complexes and nanoparticles in maghemite-based nanohybrids. NANOSCALE 2024; 16:10607-10617. [PMID: 38758111 DOI: 10.1039/d4nr01220h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
Maghemite nanoparticles functionalised with Co(II) coordination complexes at their surface show a significant increase of their magnetic anisotropy, leading to a doubling of the blocking temperature and a sixfold increase of the coercive field. Magnetometric studies suggest an enhancement that is not related to surface disordering, and point to a molecular effect involving magnetic exchange interactions mediated by the oxygen atoms at the interface as its source. Field- and temperature-dependent X-ray absorption spectroscopy (XAS) and X-ray magnetic circular dichroism (XMCD) studies show that the magnetic anisotropy enhancement is not limited to surface atoms and involves the core of the nanoparticle. These studies also point to a mechanism driven by anisotropic exchange and confirm the strength of the magnetic exchange interactions. The coupling between the complex and the nanoparticle persists at room temperature. Simulations based on the XMCD data give an effective exchange field value through the oxido coordination bridge between the Co(II) complex and the nanoparticle that is comparable to the exchange field between iron ions in bulk maghemite. Further evidence of the effectiveness of the oxido coordination bridge in mediating the magnetic interaction at the interface is given with the Ni(II) analog to the Co(II) surface-functionalised nanoparticles. A substrate-induced magnetic response is observed for the Ni(II) complexes, up to room temperature.
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Affiliation(s)
- Leonardo Curti
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, F-75005, Paris, France.
| | - Yoann Prado
- Sorbonne Université, CNRS, Laboratoire de Physicochimie des Électrolytes et Nanosystèmes interfaciaux, PHENIX, F-75005, France.
| | - Aude Michel
- Sorbonne Université, CNRS, Laboratoire de Physicochimie des Électrolytes et Nanosystèmes interfaciaux, PHENIX, F-75005, France.
| | - Delphine Talbot
- Sorbonne Université, CNRS, Laboratoire de Physicochimie des Électrolytes et Nanosystèmes interfaciaux, PHENIX, F-75005, France.
| | - Benoît Baptiste
- CNRS, Sorbonne Université, IRD, MNHN, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, IMPMC, F-75005, Paris, France.
| | - Edwige Otero
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette, France
| | - Philippe Ohresser
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette, France
| | - Yves Journaux
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, F-75005, Paris, France.
| | | | - Vincent Dupuis
- Sorbonne Université, CNRS, Laboratoire de Physicochimie des Électrolytes et Nanosystèmes interfaciaux, PHENIX, F-75005, France.
| | - Benoit Fleury
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, F-75005, Paris, France.
| | - Philippe Sainctavit
- CNRS, Sorbonne Université, IRD, MNHN, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, IMPMC, F-75005, Paris, France.
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette, France
| | - Marie-Anne Arrio
- CNRS, Sorbonne Université, IRD, MNHN, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, IMPMC, F-75005, Paris, France.
| | - Jérôme Fresnais
- Sorbonne Université, CNRS, Laboratoire de Physicochimie des Électrolytes et Nanosystèmes interfaciaux, PHENIX, F-75005, France.
| | - Laurent Lisnard
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, F-75005, Paris, France.
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2
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Gabarró-Riera G, Sañudo EC. Challenges for exploiting nanomagnet properties on surfaces. Commun Chem 2024; 7:99. [PMID: 38693350 PMCID: PMC11063158 DOI: 10.1038/s42004-024-01183-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 04/17/2024] [Indexed: 05/03/2024] Open
Abstract
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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Affiliation(s)
- Guillem Gabarró-Riera
- Institut de Nanociència i Nanotecnologia, Universitat de Barcelona IN2UB, C/Martí i Franqués 1-11, 08028, Barcelona, Spain
- Departament de Química Inorgànica i Orgànica, Universitat de Barcelona, C/Martí i Franqués 1-11, 08028, Barcelona, Spain
| | - E Carolina Sañudo
- Institut de Nanociència i Nanotecnologia, Universitat de Barcelona IN2UB, C/Martí i Franqués 1-11, 08028, Barcelona, Spain.
- Departament de Química Inorgànica i Orgànica, Universitat de Barcelona, C/Martí i Franqués 1-11, 08028, Barcelona, Spain.
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3
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Dombrowski JP, Kalendra V, Ziegler MS, Lakshmi KV, Bell AT, Tilley TD. M-Ge-Si thermolytic molecular precursors and models for germanium-doped transition metal sites on silica. Dalton Trans 2024; 53:7340-7349. [PMID: 38602311 DOI: 10.1039/d4dt00644e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
The synthesis, thermolysis, and surface organometallic chemistry of thermolytic molecular precursors based on a new germanosilicate ligand platform, -OGe[OSi(OtBu)3]3, is described. Use of this ligand is demonstrated with preparation of complexes containing the first-row transition metals Cr, Mn, and Fe. The thermolysis and grafting behavior of the synthesized complexes, Fe{OGe[OSi(OtBu)3]3}2 (FeGe), Mn{OGe[OSi(OtBu)3]3}2(THF)2 (MnGe) and Cr{OGe[OSi(OtBu)3]3}2(THF)2 (CrGe), was evaluated using a combination of thermogravimetric analysis; nuclear magnetic resonance (NMR), ultraviolet-visible (UV-Vis), and electron paramagnetic resonance (EPR) spectroscopies; and single-crystal X-ray diffraction (XRD). Grafting of the precursors onto SBA-15 mesoporous silica and subsequent calcination in air led to substantial changes in transition metal coordination environments and oxidation states, the implications of which are discussed in the context of low-coordinate and low oxidation state thermolytic molecular precursors.
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Affiliation(s)
- James P Dombrowski
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, USA.
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, USA
| | - Vidmantas Kalendra
- Department of Chemistry and Chemical Biology and The Baruch '60 Center for Biochemical Solar Energy Research, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Micah S Ziegler
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, USA.
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, USA
| | - K V Lakshmi
- Department of Chemistry and Chemical Biology and The Baruch '60 Center for Biochemical Solar Energy Research, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Alexis T Bell
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, USA
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, 201 Gilman Hall, Berkeley, CA, USA
| | - T Don Tilley
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, USA.
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, USA
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4
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Vieru V, Gómez-Coca S, Ruiz E, Chibotaru LF. Increasing the Magnetic Blocking Temperature of Single-Molecule Magnets. Angew Chem Int Ed Engl 2024; 63:e202303146. [PMID: 37539652 DOI: 10.1002/anie.202303146] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 07/18/2023] [Accepted: 08/02/2023] [Indexed: 08/05/2023]
Abstract
The synthesis of single-molecule magnets (SMMs), magnetic complexes capable of retaining magnetization blocking for a long time at elevated temperatures, has been a major concern for magnetochemists over the last three decades. In this review, we describe basic SMMs and the different approaches that allow high magnetization-blocking temperatures to be reached. We focus on the basic factors affecting magnetization blocking, magnetic axiality and the height of the blocking barrier, which can be used to group different families of complexes in terms of their SMM efficiency. Finally, we discuss several practical routes for the design of mono- and polynuclear complexes that could be applied in memory devices.
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Affiliation(s)
- Veacheslav Vieru
- Maastricht Science Programme, Faculty of Science and Engineering, Maastricht University, 6229 EN, Maastricht, The Netherlands
| | - Silvia Gómez-Coca
- Departament de Química Inorgànica i Orgànica, Universitat de Barcelona, 08028, Barcelona, Spain
- Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona, 08028, Barcelona, Spain
| | - Eliseo Ruiz
- Departament de Química Inorgànica i Orgànica, Universitat de Barcelona, 08028, Barcelona, Spain
- Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona, 08028, Barcelona, Spain
| | - Liviu F Chibotaru
- Theory of Nanomaterials Group, Katholieke Universiteit Leuven, 3001, Leuven, Belgium
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5
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Adamek M, Pastukh O, Laskowska M, Karczmarska A, Laskowski Ł. Nanostructures as the Substrate for Single-Molecule Magnet Deposition. Int J Mol Sci 2023; 25:52. [PMID: 38203222 PMCID: PMC10778921 DOI: 10.3390/ijms25010052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/06/2023] [Accepted: 12/13/2023] [Indexed: 01/12/2024] Open
Abstract
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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Affiliation(s)
| | | | - Magdalena Laskowska
- Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Krakow, Poland; (M.A.); (O.P.); (Ł.L.)
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6
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Bernhardt M, Korzyński MD, Berkson ZJ, Pointillart F, Le Guennic B, Cador O, Copéret C. Tailored Lewis Acid Sites for High-Temperature Supported Single-Molecule Magnetism. J Am Chem Soc 2023. [PMID: 37262018 DOI: 10.1021/jacs.3c02730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Generating or even retaining slow magnetic relaxation in surface immobilized single-molecule magnets (SMMs) from promising molecular precursors remains a great challenge. Illustrative examples are organolanthanide compounds that show promising SMM properties in molecular systems, though surface immobilization generally diminishes their magnetic performance. Here, we show how tailored Lewis acidic Al(III) sites on a silica surface enable generation of a material with SMM characteristics via chemisorption of (Cpttt)2DyCl ((Cpttt)- = 1,2,4-tri(tert-butyl)-cyclopentadienide). Detailed studies of this system and its diamagnetic Y analogue indicate that the interaction of the metal chloride with surface Al sites results in a change of the coordination sphere around the metal center inducing for the dysprosium-containing material slow magnetic relaxation up to 51 K with hysteresis up to 8 K and an effective energy barrier (Ueff) of 449 cm-1, the highest reported thus far for a supported SMM.
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Affiliation(s)
- Moritz Bernhardt
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog Weg 1-5/10, 8093 Zürich, Switzerland
| | - Maciej D Korzyński
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog Weg 1-5/10, 8093 Zürich, Switzerland
| | - Zachariah J Berkson
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog Weg 1-5/10, 8093 Zürich, Switzerland
| | - Fabrice Pointillart
- Univ Rennes CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, 35000 Rennes, France
| | - Boris Le Guennic
- Univ Rennes CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, 35000 Rennes, France
| | - Olivier Cador
- Univ Rennes CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, 35000 Rennes, France
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog Weg 1-5/10, 8093 Zürich, Switzerland
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7
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Magnetic molecules on surfaces: SMMs and beyond. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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8
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Gil Y, Gimeno-Muñoz R, Santana RCD, Aliaga-Alcalde N, Fuentealba P, Aravena D, González-Campo A, Spodine E. Luminescence of Macrocyclic Mononuclear Dy III Complexes and Their Immobilization on Functionalized Silicon-Based Surfaces. Inorg Chem 2022; 61:16347-16355. [PMID: 36198146 DOI: 10.1021/acs.inorgchem.2c02342] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two mononuclear DyIII complexes, [Dy(L1)(NCS)3] (Dy-EDA) and [Dy(L2)(NCS)3] (Dy-DAP), where Ln (n = 1-2) corresponds to a macrocyclic ligand derived from 2,6-pyridinedicarboxaldehyde and ethylenediamine (L1) and 1,3-diaminepropane (L2) were immobilized on functionalized silicon-based surfaces. This was achieved by the microcontact printing (μCP) technique, generating patterns on a functionalized surface via covalent bond formation through the auxiliary -NCS ligands present in the macrocyclic complex species. With this strategy, it was possible to control the position of the immobilized molecules on the surface. Water contact angle measurements, X-ray photoelectron spectroscopy (XPS), infrared reflection absorption spectra (IRRAS), and atomic force microscopy (AFM) confirmed that the surfaces were successfully functionalized. Furthermore, the optical properties in a broad temperature range were investigated for the as-prepared compounds. At room temperature, Dy-EDA was shown to emit in the deep blue region (Commission Internationald'Eclairage (CIE): (0.175, 0.128)), while Dy-DAP in the white region (CIE: (0.252, 0.312)). The different CIE values were due to the contribution of the strong emission of the ligand in the case of Dy-EDA. Besides, surface photoluminescence measurements showed that the immobilized complexes retained their bulk emissive properties.
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Affiliation(s)
- Yolimar Gil
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Casilla 233, Santiago 8380544, Chile.,Centro para el Desarrollo de la Nanociencia y Nanotecnología (CEDENNA), Santiago 9170022, Chile
| | - Raquel Gimeno-Muñoz
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Ricardo Costa de Santana
- Instituto de Física, Universidade Federal de Goiás, Campus Samambaia, 74690-900 Goiânia, GO, Brazil
| | - Núria Aliaga-Alcalde
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra, 08193 Barcelona, Spain.,ICREA─Institució Catalana de Recerca i Estudis Avançats, Passeig Lluis Companys 23, 08010 Barcelona, Spain
| | - Pablo Fuentealba
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Casilla 233, Santiago 8380544, Chile
| | - Daniel Aravena
- Departamento de Química de los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40, Correo 33, Santiago 9170022, Chile
| | - Arántzazu González-Campo
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Evgenia Spodine
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Casilla 233, Santiago 8380544, Chile.,Centro para el Desarrollo de la Nanociencia y Nanotecnología (CEDENNA), Santiago 9170022, Chile
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9
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Guo FS, He M, Huang GZ, Giblin SR, Billington D, Heinemann FW, Tong ML, Mansikkamäki A, Layfield RA. Discovery of a Dysprosium Metallocene Single-Molecule Magnet with Two High-Temperature Orbach Processes. Inorg Chem 2022; 61:6017-6025. [PMID: 35420419 PMCID: PMC9044448 DOI: 10.1021/acs.inorgchem.1c03980] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Magnetic bistability
in single-molecule magnets (SMMs) is a potential
basis for new types of nanoscale information storage material. The
standard model for thermally activated relaxation of the magnetization
in SMMs is based on the occurrence of a single Orbach process. Here,
we show that incorporating a phosphorus atom into the framework of
the dysprosium metallocene [(CpiPr5)Dy(CpPEt4)]+[B(C6F5)4]− (CpiPr5 is penta-isopropylcyclopentadienyl,
CpPEt4 is tetraethylphospholyl) leads to the occurrence
of two distinct high-temperature Orbach processes, with energy barriers
of 1410(10) and 747(7) cm–1, respectively. These
barriers provide experimental evidence for two different spin–phonon
coupling regimes, which we explain with the aid of ab initio calculations.
The strong and highly axial crystal field in this SMM also allows
magnetic hysteresis to be observed up to 70 K, using a scan rate of
25 Oe s–1. In characterizing this SMM, we show that
a conventional Debye model and consideration of rotational contributions
to the spin–phonon interaction are insufficient to explain
the observed phenomena. A
phospholyl-ligated dysprosium metallocene single-molecule
magnet shows two high-temperature Orbach relaxation processes with
effective energy barriers of 1410(10) and 747(7) cm−1, and magnetic hysteresis up to 70 K when using a scan rate of 25
Oe s−1.
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Affiliation(s)
- Fu-Sheng Guo
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QR, U.K
| | - Mian He
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QR, U.K
| | - Guo-Zhang Huang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of the Ministry of Education, School of Chemistry, Sun-Yat Sen University, Guangzhou 510006, P. R. China
| | - Sean R Giblin
- School of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA, U.K
| | - David Billington
- School of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA, U.K
| | - Frank W Heinemann
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-University Erlangen-Nürnberg, Egerlandstrabe 1, 91058 Erlangen, Germany
| | - Ming-Liang Tong
- Key Laboratory of Bioinorganic and Synthetic Chemistry of the Ministry of Education, School of Chemistry, Sun-Yat Sen University, Guangzhou 510006, P. R. China
| | - Akseli Mansikkamäki
- NMR Research Group, University of Oulu, P.O. Box 8000, Oulu FI-90014, Finland
| | - Richard A Layfield
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QR, U.K
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11
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Praveen CS, Borosy AP, Copéret C, Comas-Vives A. Strain in Silica-Supported Ga(III) Sites: Neither Too Much nor Too Little for Propane Dehydrogenation Catalytic Activity. Inorg Chem 2021; 60:6865-6874. [PMID: 33545002 PMCID: PMC8483445 DOI: 10.1021/acs.inorgchem.0c03135] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Well-defined Ga(III) sites on SiO2 are highly active, selective, and stable catalysts in the propane dehydrogenation (PDH) reaction. In this contribution, we evaluate the catalytic activity toward PDH of tricoordinated and tetracoordinated Ga(III) sites on SiO2 by means of first-principles calculations using realistic amorphous periodic SiO2 models. We evaluated the three reaction steps in PDH, namely, the C-H activation of propane to form propyl, the β-hydride (β-H) transfer to form propene and a gallium hydride, and the H-H coupling to release H2, regenerating the initial Ga-O bond and closing the catalytic cycle. Our work shows how Brønsted-Evans-Polanyi relationships are followed to a certain extent for these three reaction steps on Ga(III) sites on SiO2 and highlights the role of the strain of the reactive Ga-O pairs on such sites of realistic amorphous SiO2 models. It also shows how transition-state scaling holds very well for the β-H transfer step. While highly strained sites are very reactive sites for the initial C-H activation, they are more difficult to regenerate. The corresponding less strained sites are not reactive enough, pointing to the need for the right balance in strain to be an effective site for PDH. Overall, our work provides an understanding of the intrinsic activity of acidic Ga single sites toward the PDH reaction and paves the way toward the design and prediction of better single-site catalysts on SiO2 for the PDH reaction.
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Affiliation(s)
- C S Praveen
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog-Weg 1-5, CH-8093 Zürich, Switzerland
| | - A P Borosy
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog-Weg 1-5, CH-8093 Zürich, Switzerland
| | - C Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog-Weg 1-5, CH-8093 Zürich, Switzerland
| | - A Comas-Vives
- Department of Chemistry, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Catalonia, Spain
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12
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Korzyński MD, Berkson ZJ, Le Guennic B, Cador O, Copéret C. Leveraging Surface Siloxide Electronics to Enhance the Relaxation Properties of a Single-Molecule Magnet. J Am Chem Soc 2021; 143:5438-5444. [PMID: 33818083 DOI: 10.1021/jacs.1c00706] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Single-molecule magnets (SMMs) hold promise for unmatched information storage density as well as for applications in quantum computing and spintronics. To date, the most successful SMMs have been organometallic lanthanide complexes. However, their surface immobilization, one of the requirements for device fabrication and commercial application, remains challenging due to the sensitivity of the magnetic properties to small changes in the electronic structure of the parent SMM. Thus, finding controlled approaches to SMM surface deposition is a timely challenge. In this contribution we apply the concept of isolobality to identify siloxides present at the surface of partially dehydroxylated silica as a suitable replacement for archetypal ligand architectures in organometallic SMMs. We demonstrate theoretically and experimentally that isolated siloxide anchoring sites not only enable successful immobilization but also lead to a 2 orders of magnitude increase in magnetization relaxation times.
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Affiliation(s)
- Maciej D Korzyński
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog Weg 1-5/10, 8093 Zürich, Switzerland
| | - Zachariah J Berkson
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog Weg 1-5/10, 8093 Zürich, Switzerland
| | - Boris Le Guennic
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, 35000 Rennes, France
| | - Olivier Cador
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, 35000 Rennes, France
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog Weg 1-5/10, 8093 Zürich, Switzerland
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Abstract
Many applications of lanthanides exploit their electron spin relaxation properties. Double electron-electron measurements of distances are possible because of the relatively long relaxation times of Gd3+. Relaxation enhancement measurements of distance are possible because of the much shorter relaxation times of other lanthanides. Magnetic resonance imaging contrast agents use the long relaxation time of the S-state Gd3+ ion, and NMR shift reagents use the fast relaxation of selected other lanthanides. Other than Gd3+ and the isoelectronic Eu2+ ion, spin relaxation of the lanthanides is so fast that their EPR spectra can be observed only in the liquid helium temperature range. In this chapter the EPR properties of each of the lanthanides is briefly summarized, with an emphasis on electron spin relaxation.
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Affiliation(s)
- Joseph E McPeak
- Department of Chemistry and Biochemistry, University of Denver, Denver, CO, United States
| | - Sandra S Eaton
- Department of Chemistry and Biochemistry, University of Denver, Denver, CO, United States
| | - Gareth R Eaton
- Department of Chemistry and Biochemistry, University of Denver, Denver, CO, United States.
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14
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Zykin MA, Kazin PE, Jansen M. All-Inorganic Single-Ion Magnets in Ceramic Matrices. Chemistry 2020; 26:8834-8844. [PMID: 32130745 DOI: 10.1002/chem.201905290] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 03/03/2020] [Indexed: 02/05/2023]
Abstract
All-inorganic single-ion magnets representing paramagnetic ions incorporated in a crystalline diamagnetic matrix are reviewed. Key results and advantages of this approach in comparison with the common strategy based on molecular metal-organic complexes are considered, and some unsolved problems and future perspectives are discussed.
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Affiliation(s)
- Mikhail A Zykin
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1, 119991, Moscow, Russia
| | - Pavel E Kazin
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1, 119991, Moscow, Russia
| | - Martin Jansen
- Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569, Stuttgart, Germany
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15
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Zhang M, Wang X, Sun H, Wang N, He J, Wang N, Long Y, Huang C, Li Y. Induced Ferromagnetic Order of Graphdiyne Semiconductors by Introducing a Heteroatom. ACS CENTRAL SCIENCE 2020; 6:950-958. [PMID: 32607442 PMCID: PMC7318061 DOI: 10.1021/acscentsci.0c00348] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Indexed: 05/24/2023]
Abstract
To date, the realization of ferromagnetism in two-dimensional carbon semiconductors containing only sp electrons has remained a challenge for spintronics. Here, we utilize the atomic-level functionalization strategy to obtain three carbon matrix materials by accurately introducing different light elements (H, F, Cl) into graphdiyne's benzene ring. Their magnetic and conductive characteristics are thoroughly clarified via physical property measurements and DFT calculations. All of these carbon matrix materials retain their excellent intrinsic semiconductor properties. In particular, compared with the paramagnetism of HsGDY and ClsGDY, a robust ferromagnetic ordering as well as high mobility of up to 320 cm2 V-1 s-1 was observed in FsGDY, successfully realizing a ferromagnetic semiconductor. Through theory calculations, this unique ferromagnetic coupling can be attributed to the most striking charge transfer between carbon and fluorine atoms, demonstrating the advantages of controllable fabrication. These results not only reveal the important role of atomic-scale doping/substitution in optimizing graphdiyne material but also create new possibilities for manipulating spins and charges in 2D carbon materials.
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Affiliation(s)
- Mingjia Zhang
- Qingdao
Institute of Bioenergy and Bioprocess Technology, Chinese Academy
of Sciences, Qingdao 266101, P. R. China
| | - Xiaoxiong Wang
- College
of Physics, Qingdao University, Qingdao 266071, P. R. China
| | - Huijuan Sun
- College
of Physics, Qingdao University, Qingdao 266071, P. R. China
| | - Naiyin Wang
- Department
of Electronic Materials Engineering, Research School of Physics, The Australian National University, Canberra, Australian Capital
Territory 2601, Australia
| | - Jianjiang He
- Qingdao
Institute of Bioenergy and Bioprocess Technology, Chinese Academy
of Sciences, Qingdao 266101, P. R. China
| | - Ning Wang
- School of
Chemistry and Chemical Engineering, Shandong
University, Jinan 250100, P. R. China
| | - Yunze Long
- College
of Physics, Qingdao University, Qingdao 266071, P. R. China
| | - Changshui Huang
- Qingdao
Institute of Bioenergy and Bioprocess Technology, Chinese Academy
of Sciences, Qingdao 266101, P. R. China
- Center
of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yuliang Li
- Beijing
National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory
of Organic Solids, Institute of Chemistry,
Chinese Academy of Sciences, Beijing 100190, P. R. China
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16
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Zykin MA, Eliseev AA, Vasiliev AV, Kremer RK, Dinnebier RE, Jansen M, Kazin PE. Slow Relaxation of Magnetization in the Cobalt‐Containing Strontium Hydroxy/Fluoro‐Apatite. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201901017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mikhail A. Zykin
- Department of Chemistry Lomonosov Moscow State University 119991 Moscow Russia
| | - Artem A. Eliseev
- Department of Chemistry Lomonosov Moscow State University 119991 Moscow Russia
| | | | - Reinhard K. Kremer
- Max Planck Institute for Solid State Research Heisenbergstrasse 1 70569 Stuttgart Germany
| | - Robert E. Dinnebier
- Max Planck Institute for Solid State Research Heisenbergstrasse 1 70569 Stuttgart Germany
| | - Martin Jansen
- Max Planck Institute for Solid State Research Heisenbergstrasse 1 70569 Stuttgart Germany
| | - Pavel E. Kazin
- Department of Chemistry Lomonosov Moscow State University 119991 Moscow Russia
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17
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Pucino M, Allouche F, Gordon CP, Wӧrle M, Mougel V, Copéret C. A reactive coordinatively saturated Mo(iii) complex: exploiting the hemi-lability of tris( tert-butoxy)silanolate ligands. Chem Sci 2019; 10:6362-6367. [PMID: 31341592 PMCID: PMC6601292 DOI: 10.1039/c9sc01955c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 05/13/2019] [Indexed: 12/15/2022] Open
Abstract
Hemilabile tris(tert-butoxy)silanolate ligands allow stabilizing a mononuclear octahedral Mo(iii) complex without quenching its reactivity towards small molecules (N2, CO2, N2O).
Coordinatively unsaturated Mo(iii) complexes have been identified as highly reactive species able to activate dinitrogen without the need for a sacrificial reducing agent. Here, we report a coordinatively saturated octahedral Mo(iii) complex stabilized by κ2-tris(tert-butoxy)silanolate ligands, which is yet highly reactive towards dinitrogen and small molecules. The combined high stability and activity are ascribed to the dual binding mode of the tris(tert-butoxy)silanolate ligands that allow unlocking a coordination site in the presence of reactive small molecules to promote their activation at low temperatures.
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Affiliation(s)
- Margherita Pucino
- Department of Chemistry and Applied Biosciences , ETH Zurich , Vladimir-Prelog-Weg 2 , 8093 Zurich , Switzerland . ;
| | - Florian Allouche
- Department of Chemistry and Applied Biosciences , ETH Zurich , Vladimir-Prelog-Weg 2 , 8093 Zurich , Switzerland . ;
| | - Christopher P Gordon
- Department of Chemistry and Applied Biosciences , ETH Zurich , Vladimir-Prelog-Weg 2 , 8093 Zurich , Switzerland . ;
| | - Michael Wӧrle
- Department of Chemistry and Applied Biosciences , ETH Zurich , Vladimir-Prelog-Weg 2 , 8093 Zurich , Switzerland . ;
| | - Victor Mougel
- Department of Chemistry and Applied Biosciences , ETH Zurich , Vladimir-Prelog-Weg 2 , 8093 Zurich , Switzerland . ;
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences , ETH Zurich , Vladimir-Prelog-Weg 2 , 8093 Zurich , Switzerland . ;
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18
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Moroz IB, Lund A, Kaushik M, Severy L, Gajan D, Fedorov A, Lesage A, Copéret C. Specific Localization of Aluminum Sites Favors Ethene-to-Propene Conversion on (Al)MCM-41-Supported Ni(II) Single Sites. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01903] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Ilia B. Moroz
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1−5, CH-8093 Zürich, Switzerland
| | - Alicia Lund
- Centre de RMN à Très Hauts Champs, Université de Lyon (CNRS/ENS Lyon/UCB Lyon 1), 69100 Villeurbanne, France
| | - Monu Kaushik
- Centre de RMN à Très Hauts Champs, Université de Lyon (CNRS/ENS Lyon/UCB Lyon 1), 69100 Villeurbanne, France
| | - Laurent Severy
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1−5, CH-8093 Zürich, Switzerland
| | - David Gajan
- Centre de RMN à Très Hauts Champs, Université de Lyon (CNRS/ENS Lyon/UCB Lyon 1), 69100 Villeurbanne, France
| | - Alexey Fedorov
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1−5, CH-8093 Zürich, Switzerland
| | - Anne Lesage
- Centre de RMN à Très Hauts Champs, Université de Lyon (CNRS/ENS Lyon/UCB Lyon 1), 69100 Villeurbanne, France
| | - Christophe Copéret
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1−5, CH-8093 Zürich, Switzerland
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19
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Copéret C. Single-Sites and Nanoparticles at Tailored Interfaces Prepared via Surface Organometallic Chemistry from Thermolytic Molecular Precursors. Acc Chem Res 2019; 52:1697-1708. [PMID: 31150207 DOI: 10.1021/acs.accounts.9b00138] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Heterogeneous catalysts are complex by nature, making particularly difficult to assess the structure of their active sites. Such complexity is inherited in part from their mode of preparation, which typically involves coprecipitation or impregnation of metal salts in aqueous solution, and the associated complex surface chemistries. In this context, surface organometallic chemistry (SOMC) has emerged as a powerful approach to generate well-defined surface species, where the metal sites are introduced by grafting tailored molecular precursors. When combined with thermolytic molecular precursors (TMPs) that can lose their organic moieties quite readily upon thermal treatment, SOMC provides access to supported isolated metal sites with defined oxidation state and nuclearity inherited from the precursor. The resulting surface species bear unusual coordination imposed by the surface that provides them high reactivity in comparison with their molecular precursor. In addition, these molecularly defined species bare strong resemblance with the active sites of supported metal oxides. However, they typically contain a higher proportion of active sites making structure-activity relationship possible. They thus constitute ideal models for this important class of industrial catalysts that are used in numerous applications such as olefin epoxidation (Shell process), olefin metathesis (triolefin process), ethylene polymerization (Phillips catalysts), or propane dehydrogenation (Catofin and related processes). This SOMC/TMP approach can thus provide detailed information about the structure of active sites in industrial catalysts, their mode of initiation and deactivation, as well as the role of the support and specific thermal treatment on the final activity of the catalysts. Nonetheless, these structurally characterized surface sites still exhibit heterogeneous environments borrowed from the support itself, that explain the intrinsic complexity of heterogeneous catalysis. Furthermore, SOMC/TMP can also be used to generate and investigate supported metal nanoparticles. Starting from the well-defined isolated sites, that also contain adjacent surface OH groups, one can graft a second metal and then generate after treatment under hydrogen small and narrowly dispersed alloys or nanoparticles with tailored interfaces that can show improved catalytic performances and are amiable to detailed structure-activity relationships. This approach is illustrated by two case studies: (1) formation of supported copper nanoparticles at tailored interfaces that contain isolated metal sites for the selective hydrogenation of carbon dioxide to methanol, allowing for a detailed understanding of the role of dopants and supports in heterogeneous catalysis, and (2) preparation of highly selective and productive propane dehydrogenation catalysts based on silica-supported Pt xGa y alloy. Overall, this Account shows how the combination of SOMC and TMP helps to generate catalysts, particularly suited for elucidating structural characterization of active sites at a molecular-level which in turn enables structure-activity relationship to be drawn. Such detailed information obtained on well-defined catalysts can then be used to understand complex effects observed in industrial catalysts (effects of supports, additives, dopants, etc.), and to extract information that can then be used to improve them in a more rational way.
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Affiliation(s)
- Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg. 1-5, CH-8093 Zürich, Switzerland
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20
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Xémard M, Cordier M, Molton F, Duboc C, Le Guennic B, Maury O, Cador O, Nocton G. Divalent Thulium Crown Ether Complexes with Field-Induced Slow Magnetic Relaxation. Inorg Chem 2019; 58:2872-2880. [DOI: 10.1021/acs.inorgchem.8b03551] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mathieu Xémard
- LCM, CNRS, Ecole Polytechnique, Université
Paris-Saclay, Route de Saclay, 91128 Palaiseau, France
| | - Marie Cordier
- LCM, CNRS, Ecole Polytechnique, Université
Paris-Saclay, Route de Saclay, 91128 Palaiseau, France
| | - Florian Molton
- Univ Grenoble Alpes, CNRS UMR 5250, DCM, F-38000 Grenoble, France
| | - Carole Duboc
- Univ Grenoble Alpes, CNRS UMR 5250, DCM, F-38000 Grenoble, France
| | - Boris Le Guennic
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, 35000 Rennes, France
| | - Olivier Maury
- Univ Lyon, ENS Lyon, CNRS, Université Claude Bernard Lyon 1, UMR 5182, Laboratoire de Chimie, 69342 Lyon, France
| | - Olivier Cador
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, 35000 Rennes, France
| | - Grégory Nocton
- LCM, CNRS, Ecole Polytechnique, Université
Paris-Saclay, Route de Saclay, 91128 Palaiseau, France
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21
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Feng PF, Kong MY, Yang YW, Su PR, Shan CF, Yang XX, Cao J, Liu WS, Feng W, Tang Y. Eu 2+/Eu 3+-Based Smart Duplicate Responsive Stimuli and Time-gated Nanohybrid for Optical Recording and Encryption. ACS APPLIED MATERIALS & INTERFACES 2019; 11:1247-1253. [PMID: 30516048 DOI: 10.1021/acsami.8b17281] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
With the rapid development of information science, it is urgent that memory devices possessing high security, density, and desirable storage ability should be developed. In this work, a smart duplicate response of stimuli has been developed and a time-gate nanohybrid based on variable valence Eu2+/Eu3+ coencapsulated has been fabricated and acts as active material in the multilevel and multidimensional memory devices. The luminescence lifetime of Eu3+ in this nanohybrid gave a stimuli response due to which the energy level of the coordinated ligand could be modulated. Furthermore, by a simple sintering procedure, Eu3+ was partially in situ reduced to Eu2+ with a short lifetime in the system. And the in situ reduction ensured both Eu3+ and Eu2+ ions' uniform distribution in the nanohybrid and simultaneous response upon light excitation of variable valence Eu ions. Interestingly, Eu3+ revealed a prolonged lifetime because of the presence of an energy-transfer effect of Eu2+ → Eu3+. Such a nanohybrid had abundant luminescent properties, including the short lifetime of Eu2+, the energy transfer from the Eu2+ to Eu3+ ions, and the stimuli response of the Eu3+ lifetimes when exposed to acidic or basic vapor, thus giving birth to interesting recording and encryption performance in spatial-temporal dimensions. We believe that this research will point out a new direction for the future development of multilevel and multidimensional optical recording and encryption materials.
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Affiliation(s)
- Peng-Fei Feng
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Meng-Ya Kong
- Department of Chemistry , Fudan University , Shanghai 200438 , China
| | - Yi-Wei Yang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Ping-Ru Su
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Chang-Fu Shan
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Xiao-Xi Yang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Jing Cao
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Wei-Sheng Liu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Wei Feng
- Department of Chemistry , Fudan University , Shanghai 200438 , China
| | - Yu Tang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
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22
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Allouche F, Klose D, Gordon CP, Ashuiev A, Wörle M, Kalendra V, Mougel V, Copéret C, Jeschke G. Low-Coordinated Titanium(III) Alkyl-Molecular and Surface-Complexes: Detailed Structure from Advanced EPR Spectroscopy. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Florian Allouche
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Daniel Klose
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Christopher P. Gordon
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Anton Ashuiev
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Michael Wörle
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Vidmantas Kalendra
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
- Faculty of Physics; Vilnius University; Sauletekio 3 10257 Vilnius Lithuania
- Current address: Department of Chemistry and Chemical Biology and The Baruch “60 Center for Biochemical Solar Energy; Rensselaer Polytechnic Institute; Troy NY 12180 USA
| | - Victor Mougel
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
- Current address: Laboratoire de Chimie des Processus Biologiques, CNRS UMR 8229; Collège de France; Université Pierre et Marie Curie; 11 Place Marcelin Berthelot 75231 Paris Cedex 05 France
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Gunnar Jeschke
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
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23
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Kohri M, Yanagimoto K, Kohaku K, Shiomoto S, Kobayashi M, Imai A, Shiba F, Taniguchi T, Kishikawa K. Magnetically Responsive Polymer Network Constructed by Poly(acrylic acid) and Holmium. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01550] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
| | | | | | - Shohei Shiomoto
- Department of Applied Chemistry, Graduate School of Engineering, and School of Advanced Engineering, Kogakuin University, 2665-1 Nakano-cho, Hachioji, Tokyo 192-0015, Japan
| | | | - Akira Imai
- Technical Services Department, Quantum Design Japan, Inc., Nishiikebukuro Fujita Bldg. 1F,
1-11-16 Takamatsu, Toshima-ku, Tokyo 171-0042, Japan
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24
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Allouche F, Klose D, Gordon CP, Ashuiev A, Wörle M, Kalendra V, Mougel V, Copéret C, Jeschke G. Low-Coordinated Titanium(III) Alkyl-Molecular and Surface-Complexes: Detailed Structure from Advanced EPR Spectroscopy. Angew Chem Int Ed Engl 2018; 57:14533-14537. [DOI: 10.1002/anie.201806497] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Florian Allouche
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Daniel Klose
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Christopher P. Gordon
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Anton Ashuiev
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Michael Wörle
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Vidmantas Kalendra
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
- Faculty of Physics; Vilnius University; Sauletekio 3 10257 Vilnius Lithuania
- Current address: Department of Chemistry and Chemical Biology and The Baruch “60 Center for Biochemical Solar Energy; Rensselaer Polytechnic Institute; Troy NY 12180 USA
| | - Victor Mougel
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
- Current address: Laboratoire de Chimie des Processus Biologiques, CNRS UMR 8229; Collège de France; Université Pierre et Marie Curie; 11 Place Marcelin Berthelot 75231 Paris Cedex 05 France
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
| | - Gunnar Jeschke
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1-5 8093 Zürich Switzerland
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25
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Bar AK, Kalita P, Singh MK, Rajaraman G, Chandrasekhar V. Low-coordinate mononuclear lanthanide complexes as molecular nanomagnets. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.03.022] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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26
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Cook AK, Copéret C. Alkyne Hydroamination Catalyzed by Silica-Supported Isolated Zn(II) Sites. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00202] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Amanda K. Cook
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
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27
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Docherty SR, Estes DP, Copéret C. Facile Synthesis of Unsymmetrical Trialkoxysilanols: (RO) 2
(R′O)SiOH. Helv Chim Acta 2018. [DOI: 10.1002/hlca.201700298] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Scott R. Docherty
- Department of Chemistry and Applied Biology; ETH Zürich; Vladimir-Prelog-Weg 1-5 CH-8093 Zürich Switzerland
| | - Deven P. Estes
- Department of Chemistry and Applied Biology; ETH Zürich; Vladimir-Prelog-Weg 1-5 CH-8093 Zürich Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied Biology; ETH Zürich; Vladimir-Prelog-Weg 1-5 CH-8093 Zürich Switzerland
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28
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Fernandez Garcia G, Lunghi A, Totti F, Sessoli R. The disclosure of mesoscale behaviour of a 3d-SMM monolayer on Au(111) through a multilevel approach. NANOSCALE 2018; 10:4096-4104. [PMID: 29431791 DOI: 10.1039/c7nr06320b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Here we present a computational study of a full- and a half-monolayer of a Fe4 single molecule magnet ([Fe4(L)2(dpm)6], where H3L = 2-hydroxymethyl-2-phenylpropane-1,3-diol and Hdpm = dipivaloylmethane, Fe4Ph) on an unreconstructed surface of Au(111). This has been possible through the application of an integrated approach, which allows the explicit inclusion of the packing effects in the classical dynamics to be used in a second step in periodic and non-periodic high level DFT calculations. In this way we can obtain access to mesoscale geometrical data and verify how they can influence the magnetic properties of interest of the single Fe4 molecule. The proposed approach allows to overcome the ab initio state-of-the-art approaches used to study Single Molecule Magnets (SMMs), which are based on the study of one single adsorbed molecule and cannot represent effects on the scale of a monolayer. Indeed, we show here that it is possible to go beyond the computational limitations inherent to the use, for such complex systems, of accurate calculation techniques (e.g. ab initio molecular dynamics) without losing the level of accuracy necessary to gain new detailed insights, hardly reachable at the experimental level. Indeed, long-range and edge effects on the Fe4 structures and their easy axis of magnetization orientations have been evidenced as their different contributions to the overall macroscopic behavior.
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Affiliation(s)
- Guglielmo Fernandez Garcia
- Università degli Studi di Firenze. Dipartimento di Chimica "Ugo Schiff", Via della Lastruccia 3-13, 50019, Sesto Fiorentino, FI, Italy.
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29
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30
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Zheng XY, Zhang H, Wang Z, Liu P, Du MH, Han YZ, Wei RJ, Ouyang ZW, Kong XJ, Zhuang GL, Long LS, Zheng LS. Insights into Magnetic Interactions in a Monodisperse Gd12Fe14Metal Cluster. Angew Chem Int Ed Engl 2017; 56:11475-11479. [DOI: 10.1002/anie.201705697] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 07/08/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Xiu-Ying Zheng
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Hui Zhang
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Zhenxing Wang
- Wuhan National High Magnetic Field Center & School of Physics; Huazhong University of Science and Technology; Wuhan 430074 China
| | - Pengxin Liu
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Ming-Hao Du
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Ying-Zi Han
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Rong-Jia Wei
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Zhong-Wen Ouyang
- Wuhan National High Magnetic Field Center & School of Physics; Huazhong University of Science and Technology; Wuhan 430074 China
| | - Xiang-Jian Kong
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Gui-Lin Zhuang
- College of Chemcal Engineering; Zhejiang University of Technology; Hangzhou 310032 China
| | - La-Sheng Long
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Lan-Sun Zheng
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
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Zheng XY, Zhang H, Wang Z, Liu P, Du MH, Han YZ, Wei RJ, Ouyang ZW, Kong XJ, Zhuang GL, Long LS, Zheng LS. Insights into Magnetic Interactions in a Monodisperse Gd12Fe14Metal Cluster. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705697] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiu-Ying Zheng
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Hui Zhang
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Zhenxing Wang
- Wuhan National High Magnetic Field Center & School of Physics; Huazhong University of Science and Technology; Wuhan 430074 China
| | - Pengxin Liu
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Ming-Hao Du
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Ying-Zi Han
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Rong-Jia Wei
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Zhong-Wen Ouyang
- Wuhan National High Magnetic Field Center & School of Physics; Huazhong University of Science and Technology; Wuhan 430074 China
| | - Xiang-Jian Kong
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Gui-Lin Zhuang
- College of Chemcal Engineering; Zhejiang University of Technology; Hangzhou 310032 China
| | - La-Sheng Long
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Lan-Sun Zheng
- Collaborative Innovation Center of Chemistry for Energy Materials; State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
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Copéret C, Fedorov A, Zhizhko PA. Surface Organometallic Chemistry: Paving the Way Beyond Well-Defined Supported Organometallics and Single-Site Catalysis. Catal Letters 2017. [DOI: 10.1007/s10562-017-2107-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Delley MF, Lapadula G, Núñez-Zarur F, Comas-Vives A, Kalendra V, Jeschke G, Baabe D, Walter MD, Rossini AJ, Lesage A, Emsley L, Maury O, Copéret C. Local Structures and Heterogeneity of Silica-Supported M(III) Sites Evidenced by EPR, IR, NMR, and Luminescence Spectroscopies. J Am Chem Soc 2017; 139:8855-8867. [DOI: 10.1021/jacs.7b02179] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Murielle F. Delley
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg
1-5, CH-8093 Zürich, Switzerland
| | - Giuseppe Lapadula
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg
1-5, CH-8093 Zürich, Switzerland
| | - Francisco Núñez-Zarur
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg
1-5, CH-8093 Zürich, Switzerland
- Facultad
de Ciencias Básicas, Universidad de Medellín, Carrera 87 N 30-65, 050026 Medellín, Colombia
| | - Aleix Comas-Vives
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg
1-5, CH-8093 Zürich, Switzerland
| | - Vidmantas Kalendra
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg
1-5, CH-8093 Zürich, Switzerland
- Faculty
of Physics, Vilnius University, Sauletekio 9, LT-10222 Vilnius, Lithuania
| | - Gunnar Jeschke
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg
1-5, CH-8093 Zürich, Switzerland
| | - Dirk Baabe
- Institut
für Anorganische und Analytische Chemie, TU Braunschweig, Hagenring
30, 38106 Braunschweig, Germany
| | - Marc D. Walter
- Institut
für Anorganische und Analytische Chemie, TU Braunschweig, Hagenring
30, 38106 Braunschweig, Germany
| | - Aaron J. Rossini
- Institut
des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Anne Lesage
- Centre de
RMN à Tres Hauts Champs, Institut de Sciences Analytiques, Université de Lyon (CNRS/ENS Lyon/UCB Lyon 1), 69100 Villeurbanne, France
| | - Lyndon Emsley
- Institut
des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Olivier Maury
- Laboratoire
de Chimie de l‘ENS Lyon, Université de Lyon (CNRS/ENS Lyon/UCB LyonUMR 5182), 46 alleé d’Italie, 69007 Lyon, France
| | - Christophe Copéret
- Department
of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg
1-5, CH-8093 Zürich, Switzerland
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Bartolomé E, Arauzo A, Luzón J, Bartolomé J, Bartolomé F. Magnetic Relaxation of Lanthanide-Based Molecular Magnets. HANDBOOK OF MAGNETIC MATERIALS 2017. [DOI: 10.1016/bs.hmm.2017.09.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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