1
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Tacconi L, Leiszner SS, Briganti M, Cucinotta G, Otero E, Mannini M, Perfetti M. Temperature Induced Reversible Switching of the Magnetic Anisotropy in a Neodymium Complex Adsorbed on Graphite. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401627. [PMID: 38773906 DOI: 10.1002/smll.202401627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/22/2024] [Indexed: 05/24/2024]
Abstract
Controlling the magnetic anisotropy of molecular layers assembled on a surface is one of the challenges that needs to be addressed to create the next-generation spintronic devices. Recently, metal complexes that show a reversible solid-state switch of their magnetic anisotropy in response to physical stimuli, such as temperature and magnetic field, have been discovered. The complex Nd(trensal) (H3trensal = 2,2',2''-tris(salicylideneimino)triethylamine) is predicted to exhibit such property. An ultra-thin film of Nd(trensal) is deposited on highly ordered pyrolytic graphite as a proof-of-concept system to show that this property can be retained at the nanoscale on a layered material. By combining single crystal magnetometric measurements and synchrotron X-ray-based absorption techniques, supported by multiplet ligand field simulations based on the trigonal crystal field surrounding the lanthanide centre, it is demonstrated that changing the temperature reverses the magnetic anisotropy of an ordered film of Nd(trensal), thus opening significant perspectives for the realization of a novel family of temperature-controlled molecular spintronic devices.
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Affiliation(s)
- Leonardo Tacconi
- Department of Chemistry "U. Schiff", Università degli Studi di Firenze & INSTM RU of Firenze, Via della Lastruccia 3-13, Sesto Fiorentino, 50019, Italy
| | - Sofie S Leiszner
- Department of Chemistry, Aarhus University, Langelandsgade 140, Aarhus C, 8000, Denmark
| | - Matteo Briganti
- Department of Chemistry "U. Schiff", Università degli Studi di Firenze & INSTM RU of Firenze, Via della Lastruccia 3-13, Sesto Fiorentino, 50019, Italy
| | - Giuseppe Cucinotta
- Department of Chemistry "U. Schiff", Università degli Studi di Firenze & INSTM RU of Firenze, Via della Lastruccia 3-13, Sesto Fiorentino, 50019, Italy
| | - Edwige Otero
- Synchrotron, SOLEIL, L'Orme des Merisiers, Saint-Aubin, 91190, France
| | - Matteo Mannini
- Department of Chemistry "U. Schiff", Università degli Studi di Firenze & INSTM RU of Firenze, Via della Lastruccia 3-13, Sesto Fiorentino, 50019, Italy
| | - Mauro Perfetti
- Department of Chemistry "U. Schiff", Università degli Studi di Firenze & INSTM RU of Firenze, Via della Lastruccia 3-13, Sesto Fiorentino, 50019, Italy
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2
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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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3
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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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4
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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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5
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Rosado Piquer L, Dreiser J, Sañudo EC. Heterometallic Co-Dy SMMs grafted on iron oxide nanoparticles. Dalton Trans 2021; 50:9589-9597. [PMID: 34160526 DOI: 10.1039/d1dt01519b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Heterometallic 3d-4f SMM [Co4Dy(OH)2(SALOH)5(chp)4(MeCN)(H2O)2] (1) has been deposited onto iron oxide nanoparticles (NPs) with an oleate self-assembled monolayer (SAM) as a surfactant. The obtained hybrid molecular-inorganic system 1-NP has been thoroughly characterized. The oleate SAM separates SMM 1 from the magnetic substrate to avoid the strong-coupling between the surface and molecule to ensure that 1 retains its magnetic properties in 1-NP. The magnetic properties of the hybrid system 1-NP have been characterized by element specific XMCD: the heterometallic SMM retains its magnetic properties on the surface of the iron oxide NPs while there is an enhancement of the magnetic properties of the NPs.
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Affiliation(s)
- Lidia Rosado Piquer
- Department of Inorganic and Organic Chemistry, Inorganic Chemistry Section, Universitat de Barcelona, Carrer Martí i Franquès 1-11, 08028 Barcelona, Spain. and Institut de Nanociència i Nanotecnologia IN2UB, Universitat de Barcelona, Carrer Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Jan Dreiser
- Swiss Light Source, Paul Scherrer Institut, Forschungsstrasse 111, 5232 Villigen PSI, Switzerland
| | - E Carolina Sañudo
- Department of Inorganic and Organic Chemistry, Inorganic Chemistry Section, Universitat de Barcelona, Carrer Martí i Franquès 1-11, 08028 Barcelona, Spain. and Institut de Nanociència i Nanotecnologia IN2UB, Universitat de Barcelona, Carrer Martí i Franquès 1-11, 08028 Barcelona, Spain
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6
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Bellucci L, Labella L, Marchetti F, Pineider F, Poneti G, Samaritani S. Magnetic relaxation in dysprosium and terbium 1D-zigzag coordination chains having only 4,4′-bipyridine as connector. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Schmitz S, Izarova NV, Besson C, van Leusen J, Kögerler P, Monakhov KY. Ion-Directed Coordinative Polymerization of Copper(II) Pyridyl-Alcohol Complexes Through Thiane Functionalities. Z Anorg Allg Chem 2019. [DOI: 10.1002/zaac.201800469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sebastian Schmitz
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Natalya V. Izarova
- Jülich-Aachen Research Alliance (JARA-FIT) and Peter Grünberg Institute (PGI-6); Forschungszentrum Jülich; 52425 Jülich Germany
| | - Claire Besson
- Department of Chemistry; The George Washington University; 800 22nd St NW 20052 Washington DC USA
| | - Jan van Leusen
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Paul Kögerler
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
- Jülich-Aachen Research Alliance (JARA-FIT) and Peter Grünberg Institute (PGI-6); Forschungszentrum Jülich; 52425 Jülich Germany
| | - Kirill Yu. Monakhov
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
- Present address: Leibniz Institute of Surface Engineering (IOM); Permoserstr. 15 04318 Leipzig Germany
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8
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Mitcov D, Pedersen AH, Ceccato M, Gelardi RM, Hassenkam T, Konstantatos A, Reinholdt A, Sørensen MA, Thulstrup PW, Vinum MG, Wilhelm F, Rogalev A, Wernsdorfer W, Brechin EK, Piligkos S. Molecular multifunctionality preservation upon surface deposition for a chiral single-molecule magnet. Chem Sci 2019; 10:3065-3073. [PMID: 30996888 PMCID: PMC6428142 DOI: 10.1039/c8sc04917c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 01/23/2019] [Indexed: 01/06/2023] Open
Abstract
Simultaneous retention of SMM behaviour and of optical activity is demonstrated upon surface deposition for a chiral SMM.
The synthesis and characterization of a chiral, enneanuclear Mn(iii)-based, Single-Molecule Magnet, [Mn9O4(Me-sao)6(L)3(MeO)3(MeOH)3]Cl (1; Me-saoH2 = methylsalicylaldoxime, HL = lipoic acid) is reported. Compound 1 crystallizes in the orthorhombic P212121 space group and consists of a metallic skeleton describing a defect super-tetrahedron missing one vertex. The chirality of the [MnIII9] core originates from the directional bridging of the Me-sao2– ligands via the –N–O– oximate moieties, which define a clockwise (1ΔΔ) or counter-clockwise (1ΛΛ) rotation in both the upper [MnIII3] and lower [MnIII6] subunits. Structural integrity and retention of chirality upon dissolution and upon deposition on (a) gold nanoparticles, 1@AuNPs, (b) transparent Au(111) surfaces, 1ΛΛ@t-Au(111); 1ΔΔ@t-Au(111), and (c) epitaxial Au(111) on mica surfaces, 1@e-Au(111), was confirmed by CD and IR spectroscopies, mass spectrometry, TEM, XPS, XAS, and AFM. Magnetic susceptibility and magnetization measurements demonstrate the simultaneous retention of SMM behaviour and optical activity, from the solid state, via dissolution, to the surface deposited species.
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Affiliation(s)
- Dmitri Mitcov
- Department of Chemistry , University of Copenhagen , Universitetsparken 5 , DK-2100 , Copenhagen , Denmark .
| | - Anders H Pedersen
- Department of Chemistry , University of Copenhagen , Universitetsparken 5 , DK-2100 , Copenhagen , Denmark .
| | - Marcel Ceccato
- Department of Chemistry , University of Copenhagen , Universitetsparken 5 , DK-2100 , Copenhagen , Denmark .
| | - Rikke M Gelardi
- Department of Chemistry , University of Copenhagen , Universitetsparken 5 , DK-2100 , Copenhagen , Denmark .
| | - Tue Hassenkam
- Department of Chemistry , University of Copenhagen , Universitetsparken 5 , DK-2100 , Copenhagen , Denmark .
| | - Andreas Konstantatos
- Department of Chemistry , University of Copenhagen , Universitetsparken 5 , DK-2100 , Copenhagen , Denmark .
| | - Anders Reinholdt
- Department of Chemistry , University of Copenhagen , Universitetsparken 5 , DK-2100 , Copenhagen , Denmark .
| | - Mikkel A Sørensen
- Department of Chemistry , University of Copenhagen , Universitetsparken 5 , DK-2100 , Copenhagen , Denmark .
| | - Peter W Thulstrup
- Department of Chemistry , University of Copenhagen , Universitetsparken 5 , DK-2100 , Copenhagen , Denmark .
| | - Morten G Vinum
- Department of Chemistry , University of Copenhagen , Universitetsparken 5 , DK-2100 , Copenhagen , Denmark .
| | - Fabrice Wilhelm
- ESRF-The European Synchrotron , CS 40220 , 38043 Grenoble Cedex 9 , France
| | - Andrei Rogalev
- ESRF-The European Synchrotron , CS 40220 , 38043 Grenoble Cedex 9 , France
| | - Wolfgang Wernsdorfer
- Institute Néel , CNRS , BP 166 , 25 Avenue de Martyrs , Grenoble , 38042 Cedex 9 , France
| | - Euan K Brechin
- EaStCHEM School of Chemistry , The University of Edinburgh , David Brewster Road , Edinburgh , EH9 3FJ , UK
| | - Stergios Piligkos
- Department of Chemistry , University of Copenhagen , Universitetsparken 5 , DK-2100 , Copenhagen , Denmark .
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9
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Cornia A, Mannini M, Sessoli R, Gatteschi D. Propeller-Shaped Fe4
and Fe3
M Molecular Nanomagnets: A Journey from Crystals to Addressable Single Molecules. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801266] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Andrea Cornia
- Department of Chemical and Geological Sciences and INSTM Research Unit; University of Modena and Reggio Emilia; 41125 Modena Italy
| | - Matteo Mannini
- Department of Chemistry “Ugo Schiff” and INSTM Research Unit; University of Florence; 50019 Sesto Fiorentino (FI) Italy
| | - Roberta Sessoli
- Department of Chemistry “Ugo Schiff” and INSTM Research Unit; University of Florence; 50019 Sesto Fiorentino (FI) Italy
- Research Area Firenze; Istituto di Chimica dei Composti Organometallici - ICCOM-CNR; 50019 Sesto Fiorentino (FI) Italy
| | - Dante Gatteschi
- Department of Chemistry “Ugo Schiff” and INSTM Research Unit; University of Florence; 50019 Sesto Fiorentino (FI) Italy
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10
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Mössbauer spectroscopy of a monolayer of single molecule magnets. Nat Commun 2018; 9:480. [PMID: 29396458 PMCID: PMC5797240 DOI: 10.1038/s41467-018-02840-w] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 01/03/2018] [Indexed: 11/30/2022] Open
Abstract
The use of single molecule magnets (SMMs) as cornerstone elements in spintronics and quantum computing applications demands that magnetic bistability is retained when molecules are interfaced with solid conducting surfaces. Here, we employ synchrotron Mössbauer spectroscopy to investigate a monolayer of a tetrairon(III) (Fe4) SMM chemically grafted on a gold substrate. At low temperature and zero magnetic field, we observe the magnetic pattern of the Fe4 molecule, indicating slow spin fluctuations compared to the Mössbauer timescale. Significant structural deformations of the magnetic core, induced by the interaction with the substrate, as predicted by ab initio molecular dynamics, are also observed. However, the effects of the modifications occurring at the individual iron sites partially compensate each other, so that slow magnetic relaxation is retained on the surface. Interestingly, these deformations escaped detection by conventional synchrotron-based techniques, like X-ray magnetic circular dichroism, thus highlighting the power of synchrotron Mössbauer spectroscopy for the investigation of hybrid interfaces. Deposition of single molecule magnets onto surfaces is a key step for integration in devices exploiting their magnetic bistability and quantum properties. Here, Sessoli and colleagues exploit synchrotron Mössbauer spectroscopy to assess the effects of molecule-surface interactions on the magnetic properties of Fe(III) SMMs.
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11
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Gragnaniello L, Paschke F, Erler P, Schmitt P, Barth N, Simon S, Brune H, Rusponi S, Fonin M. Uniaxial 2D Superlattice of Fe 4 Molecular Magnets on Graphene. NANO LETTERS 2017; 17:7177-7182. [PMID: 29148799 DOI: 10.1021/acs.nanolett.6b05105] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We demonstrate that electrospray deposition enables the fabrication of highly periodic self-assembled arrays of Fe4H single molecule magnets on graphene/Ir(111). The energetic positions of molecular states are probed by means of scanning tunneling spectroscopy, showing pronounced long- and short-ranged spatial modulations, indicating the presence of both locally varying intermolecular as well as adsorption-site dependent molecule-substrate interactions. From the magnetic field dependence of the X-ray magnetic circular dichroism signal, we infer that the magnetic easy axis of each Fe4H molecule is oriented perpendicular to the sample surface and that after the deposition the value of the uniaxial anisotropy is identical to the one in bulk. Our findings therefore suggest that the observed interaction of the molecules with their surrounding does not modify the molecular magnetism, resulting in a two-dimensional array of molecular magnets that retain their bulk magnetic properties.
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Affiliation(s)
| | | | | | | | | | | | - Harald Brune
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL) , Station 3, CH-1015 Lausanne, Switzerland
| | - Stefano Rusponi
- Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL) , Station 3, CH-1015 Lausanne, Switzerland
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12
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Allouche F, Lapadula G, Siddiqi G, Lukens WW, Maury O, Le Guennic B, Pointillart F, Dreiser J, Mougel V, Cador O, Copéret C. Magnetic Memory from Site Isolated Dy(III) on Silica Materials. ACS CENTRAL SCIENCE 2017; 3:244-249. [PMID: 28386602 PMCID: PMC5364447 DOI: 10.1021/acscentsci.7b00035] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Indexed: 05/26/2023]
Abstract
Achieving magnetic remanence at single isolated metal sites dispersed at the surface of a solid matrix has been envisioned as a key step toward information storage and processing in the smallest unit of matter. Here, we show that isolated Dy(III) sites distributed at the surface of silica nanoparticles, prepared with a simple and scalable two-step process, show magnetic remanence and display a hysteresis loop open at liquid 4He temperature, in contrast to the molecular precursor which does not display any magnetic memory. This singular behavior is achieved through the controlled grafting of a tailored Dy(III) siloxide complex on partially dehydroxylated silica nanoparticles followed by thermal annealing. This approach allows control of the density and the structure of isolated, "bare" Dy(III) sites bound to the silica surface. During the process, all organic fragments are removed, leaving the surface as the sole ligand, promoting magnetic remanence.
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Affiliation(s)
- Florian Allouche
- 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
| | - Georges Siddiqi
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
| | - Wayne W. Lukens
- Chemical
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
| | - Olivier Maury
- Univ
Lyon, Ecole Normale supérieure de Lyon, Laboratoire de Chimie
UMR 5182 CNRS—Université Claude Bernard Lyon 1—ENS
Lyon, 46 Allée
d’Italie, 69364 Lyon Cedex 07, France
| | - Boris Le Guennic
- Institut
des Sciences Chimiques de Rennes UMR 6226 CNRS-UR1, Université de Rennes 1, 35042 Rennes Cedex, France
| | - Fabrice Pointillart
- Institut
des Sciences Chimiques de Rennes UMR 6226 CNRS-UR1, Université de Rennes 1, 35042 Rennes Cedex, France
| | - Jan Dreiser
- Swiss
Light Source, Paul Scherrer Institute, CH-5232 Villigen
PSI, Switzerland
| | - Victor Mougel
- 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
| | - Olivier Cador
- Institut
des Sciences Chimiques de Rennes UMR 6226 CNRS-UR1, Université de Rennes 1, 35042 Rennes Cedex, France
| | - Christophe Copéret
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, Vladimir Prelog Weg 1-5, CH-8093 Zürich, Switzerland
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13
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Serri M, Mannini M, Poggini L, Vélez-Fort E, Cortigiani B, Sainctavit P, Rovai D, Caneschi A, Sessoli R. Low-Temperature Magnetic Force Microscopy on Single Molecule Magnet-Based Microarrays. NANO LETTERS 2017; 17:1899-1905. [PMID: 28165249 DOI: 10.1021/acs.nanolett.6b05208] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The magnetic properties of some single molecule magnets (SMM) on surfaces can be strongly modified by the molecular packing in nanometric films/aggregates or by interactions with the substrate, which affect the molecular orientation and geometry. Detailed investigations of the magnetism of thin SMM films and nanostructures are necessary for the development of spin-based molecular devices, however this task is challenged by the limited sensitivity of laboratory-based magnetometric techniques and often requires access to synchrotron light sources to perform surface sensitive X-ray magnetic circular dichroism (XMCD) investigations. Here we show that low-temperature magnetic force microscopy is an alternative powerful laboratory tool able to extract the field dependence of the magnetization and to identify areas of in-plane and perpendicular magnetic anisotropy in microarrays of the SMM terbium(III) bis-phthalocyaninato (TbPc2) neutral complex grown as nanosized films on SiO2 and perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA), and this is in agreement with data extracted from nonlocal XMCD measurements performed on homogeneous TbPc2/PTCDA films.
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Affiliation(s)
- Michele Serri
- Laboratory for Molecular Magnetism (LA.M.M.), Department of Chemistry "Ugo Schiff", Università degli Studi di Firenze via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy
- INSTM Research Unit of Firenze , via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy
| | - Matteo Mannini
- Laboratory for Molecular Magnetism (LA.M.M.), Department of Chemistry "Ugo Schiff", Università degli Studi di Firenze via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy
- INSTM Research Unit of Firenze , via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy
| | - Lorenzo Poggini
- Laboratory for Molecular Magnetism (LA.M.M.), Department of Chemistry "Ugo Schiff", Università degli Studi di Firenze via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy
- INSTM Research Unit of Firenze , via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy
| | - Emilio Vélez-Fort
- European Synchrotron Radiation Facility , 71 Av. Martyrs, F-38043 Grenoble 9, France
| | - Brunetto Cortigiani
- Laboratory for Molecular Magnetism (LA.M.M.), Department of Chemistry "Ugo Schiff", Università degli Studi di Firenze via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy
- INSTM Research Unit of Firenze , via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy
| | - Philippe Sainctavit
- Institut de Mineralogie, de Physique des Materiaux et de Cosmochimie, UMR 7590, CNRS, UPMC, IRD, MNHN , F-75005 Paris, France
- Synchrotron SOLEIL, L'Orme des Merisiers , Saint-Aubin-BP 48, F-91192 Gif-sur-Yvette, France
| | - Donella Rovai
- Laboratory for Molecular Magnetism (LA.M.M.), Department of Chemistry "Ugo Schiff", Università degli Studi di Firenze via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy
- INSTM Research Unit of Firenze , via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy
| | - Andrea Caneschi
- Laboratory for Molecular Magnetism (LA.M.M.), Department of Chemistry "Ugo Schiff", Università degli Studi di Firenze via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy
- INSTM Research Unit of Firenze , via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy
| | - Roberta Sessoli
- Laboratory for Molecular Magnetism (LA.M.M.), Department of Chemistry "Ugo Schiff", Università degli Studi di Firenze via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy
- INSTM Research Unit of Firenze , via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy
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14
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Feltham HLC, Dumas C, Mannini M, Otero E, Sainctavit P, Sessoli R, Meledandri CJ, Brooker S. Proof of Principle: Immobilisation of Robust Cu II3 Tb III -Macrocycles on Small, Suitably Pre-functionalised Gold Nanoparticles. Chemistry 2017; 23:2517-2521. [PMID: 27981632 DOI: 10.1002/chem.201604821] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Indexed: 11/11/2022]
Abstract
In a proof-of-principle study, a soluble macrocyclic single-molecule magnet (SMM) containing a CuII3 TbIII magnetic core was covalently grafted onto small gold nanoparticles pre-functionalised with carboxylate-terminated tethers. A modified microemulsion method allowed production of the small and monodisperse nanoparticles (approximately 3.5 nm in diameter) for the chemisorption of a large amount of intact macrocyclic complexes in the hybrid system.
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Affiliation(s)
- Humphrey L C Feltham
- Department of Chemistry and the MacDiarmid Institute for Advanced Materials and Nanotechonology, University of Otago, P.O. Box 56, Dunedin, 9054, New Zealand
| | - Christophe Dumas
- Department of Chemistry and the MacDiarmid Institute for Advanced Materials and Nanotechonology, University of Otago, P.O. Box 56, Dunedin, 9054, New Zealand
| | - Matteo Mannini
- Dipartimento di Chimica "Ugo Schiff" and UdR INSTM, Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019, Sesto Fiorentino, Italy
| | - Edwige Otero
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin-BP 48, 91192, Gif-sur-Yvette, France
| | - Philippe Sainctavit
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin-BP 48, 91192, Gif-sur-Yvette, France.,IMPMC, UMR 7590, CNRS, UPMC, IRD, MNHN, 75005, Paris, France
| | - Roberta Sessoli
- Dipartimento di Chimica "Ugo Schiff" and UdR INSTM, Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019, Sesto Fiorentino, Italy
| | - Carla J Meledandri
- Department of Chemistry and the MacDiarmid Institute for Advanced Materials and Nanotechonology, University of Otago, P.O. Box 56, Dunedin, 9054, New Zealand
| | - Sally Brooker
- Department of Chemistry and the MacDiarmid Institute for Advanced Materials and Nanotechonology, University of Otago, P.O. Box 56, Dunedin, 9054, New Zealand
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15
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Rigamonti L, Cotton C, Nava A, Lang H, Rüffer T, Perfetti M, Sorace L, Barra AL, Lan Y, Wernsdorfer W, Sessoli R, Cornia A. Diamondoid Structure in a Metal-Organic Framework of Fe4Single-Molecule Magnets. Chemistry 2016; 22:13705-14. [DOI: 10.1002/chem.201601383] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/11/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Luca Rigamonti
- Dipartimento di Scienze Chimiche e Geologiche; Università degli Studi di Modena e Reggio Emilia & INSTM RU of Modena and Reggio Emilia; via G. Campi 103 41125 Modena Italy
| | - Carri Cotton
- Dipartimento di Scienze Chimiche e Geologiche; Università degli Studi di Modena e Reggio Emilia & INSTM RU of Modena and Reggio Emilia; via G. Campi 103 41125 Modena Italy
- Department of Chemistry; University of Warwick, Gibbet Hill; Coventry CV4 7AL UK
| | - Andrea Nava
- Dipartimento di Scienze Chimiche e Geologiche; Università degli Studi di Modena e Reggio Emilia & INSTM RU of Modena and Reggio Emilia; via G. Campi 103 41125 Modena Italy
- Dipartimento di Scienze Fisiche, Informatiche e Matematiche; Università degli Studi di Modena e Reggio Emilia; via G. Campi 213/a 41125 Modena Italy
| | - Heinrich Lang
- TU Chemnitz; Fakultät für Naturwissenschaften; Institut für Chemie, Anorganische Chemie; Chemnitz 09107 Germany
| | - Tobias Rüffer
- TU Chemnitz; Fakultät für Naturwissenschaften; Institut für Chemie, Anorganische Chemie; Chemnitz 09107 Germany
| | - Mauro Perfetti
- Laboratory of Molecular Magnetism (LAMM); Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze & INSTM RU of Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Lorenzo Sorace
- Laboratory of Molecular Magnetism (LAMM); Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze & INSTM RU of Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Anne-Laure Barra
- Laboratoire National des Champs Magnétiques Intenses (LNCMI); CNRS; 25 Avenue des Martyrs, BP 166 38042 Grenoble CEDEX 9 France
| | - Yanhua Lan
- Institut Néel; CNRS; 25 Avenue des Martyrs, BP 166 38042 Grenoble Cedex 9 France
| | - Wolfgang Wernsdorfer
- Institut Néel; CNRS; 25 Avenue des Martyrs, BP 166 38042 Grenoble Cedex 9 France
| | - Roberta Sessoli
- Laboratory of Molecular Magnetism (LAMM); Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze & INSTM RU of Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Andrea Cornia
- Dipartimento di Scienze Chimiche e Geologiche; Università degli Studi di Modena e Reggio Emilia & INSTM RU of Modena and Reggio Emilia; via G. Campi 103 41125 Modena Italy
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16
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Gallego-Planas N, Martín-Rodríguez A, Ruiz E. Magnetic and transport properties of Fe4single-molecule magnets: a theoretical insight. Dalton Trans 2016; 45:18867-18875. [DOI: 10.1039/c6dt03460h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DFT methods have been employed to analyse the magnetic and transport properties of a family of Fe4complexes showing single-molecule magnet behaviour deposited on gold surfaces.
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Affiliation(s)
- Nuria Gallego-Planas
- Ingénierie Moléculaire et Matériaux Organiques
- UMR 6501
- Boulevard Lavoisier
- Université d'Angers
- F-49045 Angers
| | - Alejandro Martín-Rodríguez
- Departament de Química Inorgànica i Orgànica and Institut de Química Teòrica i Computacional
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - Eliseo Ruiz
- Departament de Química Inorgànica i Orgànica and Institut de Química Teòrica i Computacional
- Universitat de Barcelona
- 08028 Barcelona
- Spain
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17
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Schmitz S, van Leusen J, Ellern A, Kögerler P, Monakhov KY. Thioether-terminated nickel(ii) coordination clusters with {Ni6} horseshoe- and {Ni8} rollercoaster-shaped cores. Inorg Chem Front 2016. [DOI: 10.1039/c5qi00278h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report two polynuclear nickel(ii) compounds whose supramolecular structures are controlled by small inorganic templating anions and π-conjugated Schiff-base ligands (L·SMe3− and HL·SMe2−) with peripheral, structurally exposed methylthioether groups.
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Affiliation(s)
- Sebastian Schmitz
- Institut für Anorganische Chemie
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Jan van Leusen
- Institut für Anorganische Chemie
- RWTH Aachen University
- 52074 Aachen
- Germany
| | | | - Paul Kögerler
- Institut für Anorganische Chemie
- RWTH Aachen University
- 52074 Aachen
- Germany
- Jülich-Aachen Research Alliance (JARA-FIT) and Peter Grünberg Institute (PGI-6)
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18
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Nogala W, Kannan P, Gawinkowski S, Jönsson-Niedziolka M, Kominiak M, Waluk J, Opallo M. Tailored gold nanostructure arrays as catalysts for oxygen reduction in alkaline media and a single molecule SERS platform. NANOSCALE 2015; 7:10767-74. [PMID: 26035214 DOI: 10.1039/c5nr02077h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Although plenty of functional nanomaterials are widely applied in science and technology, cost-efficient, controlled and reproducible fabrication of metallic nanostructures is a considerable challenge. Automated electrorefining by scanning electrochemical microscopy (SECM) provides an effective approach to circumvent some drawbacks of traditional homogeneous syntheses of nanoparticles, providing precise control over the amount, time and place of reactant delivery. The precursor is just a raw metal, which is the most economically viable source. This approach ensures reproducibility and the opportunity for fabrication of micropatterns, which can be rapidly analyzed by scanning probe techniques. Here, a cost-effective methodology for the preparation of naked (ligand-free) metallic nanostructures, from polycrystalline gold using a moving microelectrode, is presented. Automated micropatterning of bare gold on indium tin oxide (ITO) demonstrates the versatility of this method to tune the size and shape of the nanostructures. The morphology of the obtained materials and thus their catalytic and plasmonic properties can be tuned using the electrorefining parameters. Programmable fabrication of sample microarrays by microprinting followed by comparative SECM studies or spectroscopic analysis allows quick optimization and characterization for specific purposes. Electrocatalytic oxygen reduction in alkaline media and surface-enhanced Raman spectroscopy (SERS) of single porphycene molecules are presented as model examples.
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Affiliation(s)
- Wojciech Nogala
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Poland.
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19
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Suppressing of slow magnetic relaxation in tetracoordinate Co(II) field-induced single-molecule magnet in hybrid material with ferromagnetic barium ferrite. Sci Rep 2015; 5:10761. [PMID: 26039085 PMCID: PMC4454148 DOI: 10.1038/srep10761] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 04/28/2015] [Indexed: 12/25/2022] Open
Abstract
The novel field-induced single-molecule magnet based on a tetracoordinate mononuclear heteroleptic Co(II) complex involving two heterocyclic benzimidazole (bzi) and two thiocyanido ligands, [Co(bzi)2(NSC)2], (CoL4), was prepared and thoroughly characterized. The analysis of AC susceptibility data resulted in the spin reversal energy barrier U = 14.7 cm−1, which is in good agreement with theoretical prediction, Utheor. = 20.2 cm−1, based on axial zero-field splitting parameter D = −10.1 cm−1 fitted from DC magnetic data. Furthermore, mutual interactions between CoL4 and ferromagnetic barium ferrite BaFe12O19 (BaFeO) in hybrid materials resulted in suppressing of slow relaxation of magnetization in CoL4 for 1:2, 1:1 and 2:1 mass ratios of CoL4 and BaFeO despite the lack of strong magnetic interactions between two magnetic phases.
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20
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Caneschi A, Gatteschi D, Totti F. Molecular magnets and surfaces: A promising marriage. A DFT insight. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2014.11.016] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Hou W, Wang S, Wang X, Han X, Fan H, Cao S, Yue J, Wang Q, Jiang W, Ding C, Yu S. Development of colloidal gold immunochromatographic strips for detection of Riemerella anatipestifer. PLoS One 2015; 10:e0122952. [PMID: 25822983 PMCID: PMC4378999 DOI: 10.1371/journal.pone.0122952] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 02/16/2015] [Indexed: 11/19/2022] Open
Abstract
Riemerella anatipestifer is one of the most important bacterial pathogen of ducks and causes a contagious septicemia. R. anatipestifer infection causes serositis syndromes similar to other bacterial infections in ducks, including infection by Escherichia coli, Salmonella enterica and Pasteurella multocida. Clinically differentiating R. anatipestifer infections from other bacterial pathogen infections is usually difficult. In this study, MAb 1G2F10, a monoclonal antibody against R. anatipestifer GroEL, was used to develop a colloidal gold immunochromatographic strip. Colloidal gold particles were prepared by chemical synthesis to an average diameter of 20 ± 5.26 nm by transmission electron microscope imaging. MAb 1G2F10 was conjugated to colloidal gold particles and the formation of antibody-colloidal gold conjugates was monitored by UV/Vis spectroscopy. Immunochromatographic strips were assembled in regular sequence through different accessories sticked on PVC plate. Strips specifically detected R. anatipestifer within 10 min, but did not detect E. coli, S. enterica and P. multocida. The detection limit for R. anatipestifer was 1 × 10(6) colony forming units, which was 500 times higher than a conventional agglutination test. Accuracy was 100% match to multiplex PCR. Assay stability and reproducibility were excellent after storage at 4°C for 6 months. The immunochromatographic strips prepared in this study offer a specific, sensitive, and rapid detection method for R. anatipestifer, which is of great importance for the prevention and control of R. anatipestifer infections.
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Affiliation(s)
- Wanwan Hou
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
- Key Lab of Animal Bacteriology, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Shaohui Wang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Xiaolan Wang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Xiangan Han
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Hongjie Fan
- Key Lab of Animal Bacteriology, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Shoulin Cao
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Jiaping Yue
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Quan Wang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Wei Jiang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Chan Ding
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Shengqing Yu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
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22
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Burzurí E, Gaudenzi R, van der Zant HSJ. Observing magnetic anisotropy in electronic transport through individual single-molecule magnets. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2015; 27:113202. [PMID: 25721135 DOI: 10.1088/0953-8984/27/11/113202] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We review different electron transport methods to probe the magnetic properties, such as the magnetic anisotropy, of an individual Fe4 SMM. The different approaches comprise first and higher order transport through the molecule. Gate spectroscopy, focusing on the charge degeneracy-point, is presented as a robust technique to quantify the longitudinal magnetic anisotropy of the SMM in different redox states. We provide statistics showing the robustness and reproducibility of the different methods. In addition, conductance measurements typically show high-energy excited states well beyond the ground spin multiplet of SMM. Some of these excitations have their origin in excited spin multiplets, others in vibrational modes of the molecule. The interplay between vibrations, charge and spin may yield a new approach for spin control.
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Affiliation(s)
- E Burzurí
- Kavli Institute of Nanoscience, Delft University of Technology, PO Box 5046, 2600 GA Delft, The Netherlands
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23
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Brooker S. Spin crossover with thermal hysteresis: practicalities and lessons learnt. Chem Soc Rev 2015; 44:2880-92. [DOI: 10.1039/c4cs00376d] [Citation(s) in RCA: 386] [Impact Index Per Article: 42.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Memory applications of spin crossover require bistability: magnetic data must be appropriately collected and reported, and consideration given to lifetimes.
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Affiliation(s)
- Sally Brooker
- Department of Chemistry and MacDiarmid Institute for Advanced Materials and Nanotechnology
- University of Otago
- Dunedin
- New Zealand
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24
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Westrup KCM, Boulon M, Totaro P, Nunes GG, Back DF, Barison A, Jackson M, Paulsen C, Gatteschi D, Sorace L, Cornia A, Soares JF, Sessoli R. Adding Remnant Magnetization and Anisotropic Exchange to Propeller‐like Single‐Molecule Magnets through Chemical Design. Chemistry 2014; 20:13681-91. [PMID: 25200792 DOI: 10.1002/chem.201403361] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Kátia Cristina M. Westrup
- Departamento de Química, Universidade Federal do Paraná, Centro Politécnico, 81530‐900, Curitiba‐PR (Brazil)
| | - Marie‐Emmanuelle Boulon
- Dipartimento di Chimica Ugo Schiff & UdR INSTM, Università degli Studi di Firenze, Via della Lastruccia 3–13, 50019 Sesto Fiorentino (Italy)
| | - Pasquale Totaro
- Dipartimento di Chimica Ugo Schiff & UdR INSTM, Università degli Studi di Firenze, Via della Lastruccia 3–13, 50019 Sesto Fiorentino (Italy)
| | - Giovana G. Nunes
- Departamento de Química, Universidade Federal do Paraná, Centro Politécnico, 81530‐900, Curitiba‐PR (Brazil)
| | - Davi F. Back
- Departamento de Química, Universidade Federal de Santa Maria, Camobi, 97105‐900, Santa Maria‐RS (Brazil)
| | - Andersson Barison
- Departamento de Química, Universidade Federal do Paraná, Centro Politécnico, 81530‐900, Curitiba‐PR (Brazil)
| | - Martin Jackson
- Institut Néel CNRS & Université J. Fourier, 25 rue des Martyrs, 38042 Grenoble (France)
- Current address: Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16 Prague (Czech Republic)
| | - Carley Paulsen
- Institut Néel CNRS & Université J. Fourier, 25 rue des Martyrs, 38042 Grenoble (France)
| | - Dante Gatteschi
- Dipartimento di Chimica Ugo Schiff & UdR INSTM, Università degli Studi di Firenze, Via della Lastruccia 3–13, 50019 Sesto Fiorentino (Italy)
| | - Lorenzo Sorace
- Dipartimento di Chimica Ugo Schiff & UdR INSTM, Università degli Studi di Firenze, Via della Lastruccia 3–13, 50019 Sesto Fiorentino (Italy)
| | - Andrea Cornia
- Dipartimento di Scienze Chimiche e Geologiche & UdR INSTM, Università degli Studi di Modena e Reggio Emilia, Via G. Campi 183, 41125 Modena (Italy)
| | - Jaísa F. Soares
- Departamento de Química, Universidade Federal do Paraná, Centro Politécnico, 81530‐900, Curitiba‐PR (Brazil)
| | - Roberta Sessoli
- Dipartimento di Chimica Ugo Schiff & UdR INSTM, Università degli Studi di Firenze, Via della Lastruccia 3–13, 50019 Sesto Fiorentino (Italy)
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25
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Wang Y, Wang L, Zhang J, Wang G, Chen W, Chen L, Zhang X. Preparation of colloidal gold immunochromatographic strip for detection of Paragonimiasis skrjabini. PLoS One 2014; 9:e92034. [PMID: 24643068 PMCID: PMC3958401 DOI: 10.1371/journal.pone.0092034] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 02/19/2014] [Indexed: 11/18/2022] Open
Abstract
Background Paragonimiasis is a food-borne trematodiasis, a serious public health issue and a neglected tropical disease. Paragonimus skrjabini is a unique species found in China. Unlike paragonimiasis westermani, it is nearly impossible to make a definitive diagnosis for paragonimiasis skrjabini by finding eggs in sputum or feces. Immunodiagnosis is the best choice to detect paragonimiasis skrjabini. There is an urgent need to develop a novel, rapid and simple immunoassay for large-scale screening patients in endemic areas. Methodology/Principal Findings To develop a rapid, simple immunodiagnostic assay for paragonimiasis, rabbit anti-human IgG was conjugated to colloidal gold particles and used to detect antibodies in the sera of paragonimiasis patients. The synthesis and identification of colloidal gold particles and antibody-colloidal gold conjugates were performed. The size of colloidal gold particles was examined using a transmission electron microscope (TEM). The average diameter of colloidal gold particles was 17.46 nm with a range of 14.32–21.80 nm according to the TEM images. The formation of antibody-colloidal gold conjugates was monitored by UV/Vis spectroscopy. Excretory-secretory (ES) antigen of Paragonimus skrjabini was coated on nitrocellulose membrane as the capture line. Recombinant Staphylococcus protein A was used to prepare the control line. This rapid gold immunochromatographic strip was assembled in regular sequence through different accessories sticked on PVC board. The relative sensitivity and specificity of the strip was 94.4% (51/54) and 94.1% (32/34) respectively using ELISA as the standard method. Its stability and reproducibility were quite excellent after storage of the strip at 4°C for 6 months. Conclusions/Significance Immunochromatographic strip prepared in this study can be used in a rapid one-step immunochromatographic assay, which is instantaneous and convenient.
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Affiliation(s)
- Ying Wang
- Institute of Tropical Medicine, Third Military Medical University, Chongqing, China
| | - Lifang Wang
- Department of Pathogenic Biology, Luzhou Medical College, Sichuan, China
| | - Jianwei Zhang
- Department of Physics, Chengdu Medical College, Sichuan, China
| | - Guangxi Wang
- Department of Pathogenic Biology, Luzhou Medical College, Sichuan, China
| | - Wenbi Chen
- Department of Pathogenic Biology, Luzhou Medical College, Sichuan, China
| | - Lin Chen
- Department of Pathogenic Biology, Third Military Medical University, Chongqing, China
| | - Xilin Zhang
- Institute of Tropical Medicine, Third Military Medical University, Chongqing, China
- Department of Pathogenic Biology, Third Military Medical University, Chongqing, China
- * E-mail:
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26
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Cornia A, Mannini M. Single-Molecule Magnets on Surfaces. MOLECULAR NANOMAGNETS AND RELATED PHENOMENA 2014. [DOI: 10.1007/430_2014_150] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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