1
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Vieira DEL, Cardoso JPV, Fedorchenko AV, Fertman EL, ČiŽmár E, Feher A, Babkin RY, Pashkevich YG, Brett CMA, Vieira JM, Salak AN. Magnetic-field-assisted deposition of self-assembling crystallite layers of Co 2+-containing layered double hydroxides. Chem Commun (Camb) 2021; 57:6899-6902. [PMID: 34151915 DOI: 10.1039/d1cc01599k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Precipitation of nanocrystallites of cobalt-aluminium layered double hydroxides in a magnetic field has been studied. In a magnetic field perpendicular to the substrate, dense and homogeneous films have been obtained. Magnetic anisotropy of the crystallites is explained by deviation from the statistical cation distribution in favour of honeycomb-like coordination of cobalt.
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Affiliation(s)
- Daniel E L Vieira
- Department of Materials and Ceramic Engineering, CICECO - Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - João P V Cardoso
- Department of Materials and Ceramic Engineering, CICECO - Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Alexey V Fedorchenko
- B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 61103 Kharkiv, Ukraine
| | - Elena L Fertman
- B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 61103 Kharkiv, Ukraine
| | - Erik ČiŽmár
- Institute of Physics, Faculty of Science, P. J. Šafárik University in Košice, 04154 Košice, Slovakia
| | - Alexander Feher
- Institute of Physics, Faculty of Science, P. J. Šafárik University in Košice, 04154 Košice, Slovakia
| | - Roman Yu Babkin
- O. Galkin Donetsk Institute for Physics and Engineering, National Academy of Sciences of Ukraine, 03028 Kyiv, Ukraine.
| | - Yurii G Pashkevich
- O. Galkin Donetsk Institute for Physics and Engineering, National Academy of Sciences of Ukraine, 03028 Kyiv, Ukraine.
| | - Christopher M A Brett
- Department of Chemistry, CEMMPRE, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Joaquim M Vieira
- Department of Materials and Ceramic Engineering, CICECO - Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Andrei N Salak
- Department of Materials and Ceramic Engineering, CICECO - Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
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2
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Cao W, Yin S, Plank M, Chumakov A, Opel M, Chen W, Kreuzer LP, Heger JE, Gallei M, Brett CJ, Schwartzkopf M, Eliseev AA, Anokhin EO, Trusov LA, Roth SV, Müller-Buschbaum P. Spray-Deposited Anisotropic Ferromagnetic Hybrid Polymer Films of PS- b-PMMA and Strontium Hexaferrite Magnetic Nanoplatelets. ACS APPLIED MATERIALS & INTERFACES 2021; 13:1592-1602. [PMID: 33355441 DOI: 10.1021/acsami.0c19595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Spray deposition is a scalable and cost-effective technique for the fabrication of magnetic hybrid films containing diblock copolymers (DBCs) and magnetic nanoparticles. However, it is challenging to obtain spray-deposited anisotropic magnetic hybrid films without using external magnetic fields. In the present work, spray deposition is applied to prepare perpendicular anisotropic magnetic hybrid films by controlling the orientation of strontium hexaferrite nanoplatelets inside ultra-high-molecular-weight DBC polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) films. During spray deposition, the evolution of DBC morphology and the orientation of magnetic nanoplatelets are monitored with in situ grazing-incidence small-angle X-ray scattering (GISAXS). For reference, a pure DBC film without nanoplatelets is deposited with the same conditions. Solvent-controlled magnetic properties of the hybrid film are proven with solvent vapor annealing (SVA) applied to the final deposited magnetic films. Obvious changes in the DBC morphology and nanoplatelet localization are observed during SVA. The superconducting quantum interference device data show that ferromagnetic hybrid polymer films with high coercivity can be achieved via spray deposition. The hybrid films show a perpendicular magnetic anisotropy before SVA, which is strongly weakened after SVA. The spray-deposited hybrid films appear highly promising for potential applications in magnetic data storage and sensors.
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Affiliation(s)
- Wei Cao
- Physik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Shanshan Yin
- Physik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Martina Plank
- Ernst-Berl-Institute for Technical and Macromolecular Chemistry, Technische Universität Darmstadt, Alarich-Weiss-Straße 4, 64287 Darmstadt, Germany
| | - Andrei Chumakov
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany
| | - Matthias Opel
- Bayerische Akademie der Wissenschaften, Walther-Meissner-Institut, Walther-Meissner-Straße 8, 85748 Garching, Germany
| | - Wei Chen
- Physik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Lucas P Kreuzer
- Physik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Julian E Heger
- Physik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Markus Gallei
- Chair in Polymer Chemistry, Saarland University, Campus C4 2, 66123 Saarbrücken, Germany
| | - Calvin J Brett
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany
- Department of Engineering Mechanics, KTH Royal Institute of Technology, Teknikringen 8, SE-100 44 Stockholm, Sweden
- Wallenberg Wood Science Center, KTH Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
| | | | - Artem A Eliseev
- Department of Chemistry, Moscow State University, 119991 Moscow, Russia
| | - Evgeny O Anokhin
- Department of Materials Science, Moscow State University, 119991 Moscow, Russia
| | - Lev A Trusov
- Department of Chemistry, Moscow State University, 119991 Moscow, Russia
| | - Stephan V Roth
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
| | - Peter Müller-Buschbaum
- Physik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
- Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstraße 1, 85748 Garching, Germany
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3
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Shen B, Yu C, Baker AA, McCall SK, Yu Y, Su D, Yin Z, Liu H, Li J, Sun S. Chemical Synthesis of Magnetically Hard and Strong Rare Earth Metal Based Nanomagnets. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201812007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bo Shen
- Department of Chemistry Brown University Providence RI 02912 USA
| | - Chao Yu
- Department of Chemistry Brown University Providence RI 02912 USA
| | - Alexander A. Baker
- Materials Science Division Lawrence Livermore National Laboratory Livermore CA 94550 USA
| | - Scott K. McCall
- Materials Science Division Lawrence Livermore National Laboratory Livermore CA 94550 USA
| | - Yongsheng Yu
- School of Chemical Engineering and Technology Harbin Institute of Technology Harbin Heilongjiang 150001 China
| | - Dong Su
- Center for Functional Nanomaterials Brookhaven National Laboratory Upton NY 11973 USA
| | - Zhouyang Yin
- Department of Chemistry Brown University Providence RI 02912 USA
| | - Hu Liu
- Department of Chemistry Brown University Providence RI 02912 USA
- School of Chemical Engineering and Technology Harbin Institute of Technology Harbin Heilongjiang 150001 China
| | - Junrui Li
- Department of Chemistry Brown University Providence RI 02912 USA
| | - Shouheng Sun
- Department of Chemistry Brown University Providence RI 02912 USA
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4
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Shen B, Yu C, Baker AA, McCall SK, Yu Y, Su D, Yin Z, Liu H, Li J, Sun S. Chemical Synthesis of Magnetically Hard and Strong Rare Earth Metal Based Nanomagnets. Angew Chem Int Ed Engl 2018; 58:602-606. [DOI: 10.1002/anie.201812007] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Bo Shen
- Department of Chemistry Brown University Providence RI 02912 USA
| | - Chao Yu
- Department of Chemistry Brown University Providence RI 02912 USA
| | - Alexander A. Baker
- Materials Science Division Lawrence Livermore National Laboratory Livermore CA 94550 USA
| | - Scott K. McCall
- Materials Science Division Lawrence Livermore National Laboratory Livermore CA 94550 USA
| | - Yongsheng Yu
- School of Chemical Engineering and Technology Harbin Institute of Technology Harbin Heilongjiang 150001 China
| | - Dong Su
- Center for Functional Nanomaterials Brookhaven National Laboratory Upton NY 11973 USA
| | - Zhouyang Yin
- Department of Chemistry Brown University Providence RI 02912 USA
| | - Hu Liu
- Department of Chemistry Brown University Providence RI 02912 USA
- School of Chemical Engineering and Technology Harbin Institute of Technology Harbin Heilongjiang 150001 China
| | - Junrui Li
- Department of Chemistry Brown University Providence RI 02912 USA
| | - Shouheng Sun
- Department of Chemistry Brown University Providence RI 02912 USA
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5
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Suda M. A New Photo-Control Method for Organic–Inorganic Interface Dipoles and Its Application to Photo-Controllable Molecular Devices. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170283] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Masayuki Suda
- Institute for Molecular Science, 38, Nishigo-naka, Myodaiji, Okazaki, Aichi 444-8585
- RIKEN, 2-1, Hirosawa, Wako, Saitama 351-0198
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6
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Lentijo-Mozo S, Tan RP, Garcia-Marcelot C, Altantzis T, Fazzini PF, Hungria T, Cormary B, Gallagher JR, Miller JT, Martinez H, Schrittwieser S, Schotter J, Respaud M, Bals S, Van Tendeloo G, Gatel C, Soulantica K. Air- and water-resistant noble metal coated ferromagnetic cobalt nanorods. ACS NANO 2015; 9:2792-2804. [PMID: 25734760 DOI: 10.1021/nn506709k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Cobalt nanorods possess ideal magnetic properties for applications requiring magnetically hard nanoparticles. However, their exploitation is undermined by their sensitivity toward oxygen and water, which deteriorates their magnetic properties. The development of a continuous metal shell inert to oxidation could render them stable, opening perspectives not only for already identified applications but also for uses in which contact with air and/or aqueous media is inevitable. However, the direct growth of a conformal noble metal shell on magnetic metals is a challenge. Here, we show that prior treatment of Co nanorods with a tin coordination compound is the crucial step that enables the subsequent growth of a continuous noble metal shell on their surface, rendering them air- and water-resistant, while conserving the monocrystallity, metallicity and the magnetic properties of the Co core. Thus, the as-synthesized core-shell ferromagnetic nanorods combine high magnetization and strong uniaxial magnetic anisotropy, even after exposure to air and water, and hold promise for successful implementation in in vitro biodiagnostics requiring probes of high magnetization and anisotropic shape.
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Affiliation(s)
- Sergio Lentijo-Mozo
- †Laboratoire de Physique et Chimie des Nano-objets (LPCNO), Université de Toulouse; INSA, UPS, CNRS, 135 avenue de Rangueil, 31077 Toulouse, France
| | - Reasmey P Tan
- †Laboratoire de Physique et Chimie des Nano-objets (LPCNO), Université de Toulouse; INSA, UPS, CNRS, 135 avenue de Rangueil, 31077 Toulouse, France
| | - Cécile Garcia-Marcelot
- †Laboratoire de Physique et Chimie des Nano-objets (LPCNO), Université de Toulouse; INSA, UPS, CNRS, 135 avenue de Rangueil, 31077 Toulouse, France
- ‡Centre d'Elaboration de Matériaux et d'Etudes Structurales (CEMES-CNRS), 29 rue Jeanne Marvig, B.P. 94347, 31055 Toulouse, France
| | - Thomas Altantzis
- §Electron Microscopy for Materials Research (EMAT), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Pier-Francesco Fazzini
- †Laboratoire de Physique et Chimie des Nano-objets (LPCNO), Université de Toulouse; INSA, UPS, CNRS, 135 avenue de Rangueil, 31077 Toulouse, France
| | - Teresa Hungria
- †Laboratoire de Physique et Chimie des Nano-objets (LPCNO), Université de Toulouse; INSA, UPS, CNRS, 135 avenue de Rangueil, 31077 Toulouse, France
| | - Benoit Cormary
- †Laboratoire de Physique et Chimie des Nano-objets (LPCNO), Université de Toulouse; INSA, UPS, CNRS, 135 avenue de Rangueil, 31077 Toulouse, France
| | - James R Gallagher
- ⊥Chemical Science and Engineering Division, Argonne National Laboratory, 9700 S Cass Avenue, Argonne, Illinois 60439, United States
| | - Jeffrey T Miller
- ⊥Chemical Science and Engineering Division, Argonne National Laboratory, 9700 S Cass Avenue, Argonne, Illinois 60439, United States
| | - Herve Martinez
- ∥IPREM-ECP CNRS UMR 5254, Université de Pau, Hélioparc Pau Pyrénées, 2 av. Pierre Angot, 64053 Pau Cedex 9, France
| | - Stefan Schrittwieser
- #Molecular Diagnostics, AIT Austrian Institute of Technology, Vienna, Donau City Strasse 1, 1220 Vienna, Austria
| | - Joerg Schotter
- #Molecular Diagnostics, AIT Austrian Institute of Technology, Vienna, Donau City Strasse 1, 1220 Vienna, Austria
| | - Marc Respaud
- †Laboratoire de Physique et Chimie des Nano-objets (LPCNO), Université de Toulouse; INSA, UPS, CNRS, 135 avenue de Rangueil, 31077 Toulouse, France
| | - Sara Bals
- §Electron Microscopy for Materials Research (EMAT), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Gustaaf Van Tendeloo
- §Electron Microscopy for Materials Research (EMAT), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Christophe Gatel
- ‡Centre d'Elaboration de Matériaux et d'Etudes Structurales (CEMES-CNRS), 29 rue Jeanne Marvig, B.P. 94347, 31055 Toulouse, France
| | - Katerina Soulantica
- †Laboratoire de Physique et Chimie des Nano-objets (LPCNO), Université de Toulouse; INSA, UPS, CNRS, 135 avenue de Rangueil, 31077 Toulouse, France
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7
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Natsui K, Yamamoto T, Akahori M, Einaga Y. Photochromism-induced amplification of critical current density in superconducting boron-doped diamond with an azobenzene molecular layer. ACS APPLIED MATERIALS & INTERFACES 2015; 7:887-894. [PMID: 25494096 DOI: 10.1021/am5074613] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A key issue in molecular electronics is the control of electronic states by optical stimuli, which enables fast and high-density data storage and temporal-spatial control over molecular processes. In this article, we report preparation of a photoswitchable superconductor using a heavily boron-doped diamond (BDD) with a photochromic azobenzene (AZ) molecular layer. BDDs electrode properties allow for electrochemical immobilization, followed by copper(I)-catalyzed alkyne-azide cycloaddition (a "click" reaction). Superconducting properties were examined with magnetic and electrical transport measurements, such as field-dependent isothermal magnetization, temperature-dependent resistance, and the low-temperature voltage-current response. These measurements revealed reversible amplification of the critical current density by 55% upon photoisomerization. This effect is explained as the reversible photoisomerization of AZ inducing an inhomogeneous electron distribution along the BDD surface that renormalizes the surface pinning contribution to the critical current.
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Affiliation(s)
- Keisuke Natsui
- Department of Chemistry, Keio University , 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
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8
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Park M, Kim Y, Ko Y, Cheong S, Ryu SW, Cho J. Amphiphilic Layer-by-Layer Assembly Overcoming Solvent Polarity between Aqueous and Nonpolar Media. J Am Chem Soc 2014; 136:17213-23. [DOI: 10.1021/ja509168g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Minkyung Park
- Department
of Chemical and Biological Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Younghoon Kim
- Department
of Chemical and Biological Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Yongmin Ko
- Department
of Chemical and Biological Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Sanghyuk Cheong
- Department
of Chemical and Biological Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Sook Won Ryu
- Department
of Laboratory Medicine, Kangwon National University School of Medicine, Chuncheon-si, Gangwon-do, Republic of Korea
| | - Jinhan Cho
- Department
of Chemical and Biological Engineering, Korea University, Seoul 136-713, Republic of Korea
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9
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Hu L, Zhang R, Chen Q. Synthesis and assembly of nanomaterials under magnetic fields. NANOSCALE 2014; 6:14064-105. [PMID: 25338267 DOI: 10.1039/c4nr05108d] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Traditionally, magnetic field has long been regarded as an important means for studying the magnetic properties of materials. With the development of synthesis and assembly methods, magnetic field, similar to conventional reaction conditions such as temperature, pressure, and surfactant, has been developed as a new parameter for synthesizing and assembling special structures. To date, magnetic fields have been widely employed for materials synthesis and assembly of one-dimensional (1D), two-dimensional (2D) or three-dimensional (3D) aggregates. In this review, we aim to provide a summary on the applications of magnetic fields in this area. Overall, the objectives of this review are: (1) to theoretically discuss several factors that refer to magnetic field effects (MFEs); (2) to review the magnetic-field-induced synthesis of nanomaterials; the 1D structure of various nanomaterials, such as metal oxides/sulfide, metals, alloys, and carbon, will be described in detail. Moreover, the MFEs on spin states of ions, magnetic domain and product phase distribution will be also involved; (3) to review the alignment of carbon nanotubes, assembly of magnetic nanomaterials and photonic crystals with the help of magnetic fields; and (4) to sketch the future opportunities that magnetic fields can face in the area of materials synthesis and assembly.
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Affiliation(s)
- Lin Hu
- High Magnetic Field Laboratory, Hefei Institute of Physical Sciences, Chinese Academy of Sciences, Hefei 230031, China.
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10
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Dong Y, Liu F, Yang W, Zhu J, Yu J, Hou Y. Layer-by-layer assembly of L10-FePt nanoparticles with significant perpendicular magnetic anisotropy. CrystEngComm 2014. [DOI: 10.1039/c4ce00657g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The L10-FePt film has been fabricated via layer-by-layer assembly under an external magnetic field and exhibits significant perpendicular magnetic anisotropy.
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Affiliation(s)
- Yunhe Dong
- Department of Materials Science and Engineering
- College of Engineering
- Peking University
- Beijing, China
| | - Fei Liu
- Department of Materials Science and Engineering
- College of Engineering
- Peking University
- Beijing, China
| | - Wenlong Yang
- Department of Materials Science and Engineering
- College of Engineering
- Peking University
- Beijing, China
| | - Jinghan Zhu
- Department of Materials Science and Engineering
- College of Engineering
- Peking University
- Beijing, China
| | - Jing Yu
- Department of Materials Science and Engineering
- College of Engineering
- Peking University
- Beijing, China
| | - Yanglong Hou
- Department of Materials Science and Engineering
- College of Engineering
- Peking University
- Beijing, China
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11
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12
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Tricard S, Raza Y, Mazerat S, Aissou K, Baron T, Mallah T. Sequential growth of bistable copper–molybdenum coordination nanolayers on inorganic surfaces. Dalton Trans 2013; 42:8034-40. [DOI: 10.1039/c3dt50259g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Thermo-Optic and Dispersion Properties of Host–Guest Doping Polymer. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2013. [DOI: 10.1007/s13369-012-0415-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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14
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Yamamoto T, Umemura Y, Einaga Y. Structure-distortion-induced photomagnetic effect in azobenzene/polyoxometalate Langmuir–Blodgett films. Dalton Trans 2013; 42:16014-20. [DOI: 10.1039/c3dt51402a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Dong Q, Li G, Ho CL, Faisal M, Leung CW, Pong PWT, Liu K, Tang BZ, Manners I, Wong WY. A polyferroplatinyne precursor for the rapid fabrication of L1(0) -FePt-type bit patterned media by nanoimprint lithography. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:1034-1040. [PMID: 22290721 DOI: 10.1002/adma.201104171] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2011] [Indexed: 05/28/2023]
Abstract
A polyferroplatinyne polymer can be patterned on the surface of Si wafer in ordered nanoline or nanodot shapes with PDMS molds through nanoimprint lithography (NIL), and subsequent thermal treatment gives rise to the nanopatterned arrays of L1(0) -FePt nanoparticles with the same periodicities. The method offers excellent potential to be utilized in the simple and rapid fabrication of bit patterned media for magnetic data recording.
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Affiliation(s)
- Qingchen Dong
- Institute of Molecular Functional Materials, Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Waterloo Road, Hong Kong, P. R. China
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16
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Nagaoka Y, Chen O, Wang Z, Cao YC. Structural Control of Nanocrystal Superlattices Using Organic Guest Molecules. J Am Chem Soc 2012; 134:2868-71. [DOI: 10.1021/ja209062d] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yasutaka Nagaoka
- Department of Chemistry, University of Florida, Gainesville, Florida 32611,
United States
| | - Ou Chen
- Department of Chemistry, University of Florida, Gainesville, Florida 32611,
United States
| | - Zhongwu Wang
- Cornell High
Energy Synchrotron
Source (CHESS), Wilson Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - Y. Charles Cao
- Department of Chemistry, University of Florida, Gainesville, Florida 32611,
United States
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17
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Tricard S, Costa-Coquelard C, Volatron F, Fleury B, Huc V, Albouy PA, David C, Miserque F, Jegou P, Palacin S, Mallah T. Sequential growth in solution of NiFe Prussian blue coordination network nanolayers on Si(100) surfaces. Dalton Trans 2011; 41:1582-90. [PMID: 22159371 DOI: 10.1039/c1dt11568e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Controlling the elaboration of Coordination Networks (CoNet) on surfaces at the nanoscale remains a challenge. One suitable technique is the Sequential Growth in Solution (SGS), which has the advantage to be simple, cheap and fast. We addressed two issues in this article: i) the controlled synthesis of ultra thin films of CoNet (thickness lower than 10 nm), and ii) the investigation of the influence of the precursors' concentration on the growth process. Si(100) was used because it is possible to prepare atomically flat Si-H surfaces, which is necessary for the growth of ultrathin films. We used, as a model system, the sequential reactions of K(4)[Fe(II)(CN)(6)] and [Ni(II)(H(2)O)(6)]Cl(2) that occur by the substitution of the water molecules in the coordination sphere of Ni(II) by the nitrogen atoms of ferrocyanide. We demonstrated that the nature of the deposited film depends mainly on the relative concentration of the anchoring sites versus the precursors' solution. Attenuated Total Reflection Fourier Transformed Infra Red (ATR-FTIR), X-ray reflectivity, X-ray Photoelectron Spectroscopy (XPS) and Atomic Force Microscopy (AFM) were used to characterize the steps of the growth process.
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Affiliation(s)
- Simon Tricard
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182, Université Paris-Sud, F-91405, Orsay, France.
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18
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Comesaña-Hermo M, Estivill R, Ciuculescu D, Amiens C, Farle M, Batat P, Jonusauskas G, McClenaghan ND, Lecante P, Tardin C, Mazeres S. Photomodulation of the magnetisation of Co nanocrystals decorated with rhodamine B. Chemphyschem 2011; 12:2915-9. [PMID: 21976370 DOI: 10.1002/cphc.201100616] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Miguel Comesaña-Hermo
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, 31077 Toulouse, France
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Indrianingsih AW, Suda M, Heta Y, Suzuki K, Einaga Y. Surface Modification of Ferromagnetic L1o FePt Nanoparticles Using Biotin–Avidin as Biomolecular Recognition Probes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2011. [DOI: 10.1246/bcsj.20110086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Shao M, Xu X, Han J, Zhao J, Shi W, Kong X, Wei M, Evans DG, Duan X. Magnetic-field-assisted assembly of layered double hydroxide/metal porphyrin ultrathin films and their application for glucose sensors. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:8233-8240. [PMID: 21650214 DOI: 10.1021/la201521w] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The ordered ultrathin films (UTFs) based on CoFe-LDH (layered double hydroxide) nanoplatelets and manganese porphyrin (Mn-TPPS) have been fabricated on ITO substrates via a magnetic-field-assisted (MFA) layer-by-layer (LBL) method and were demonstrated as an electrochemical sensor for glucose. The XRD pattern for the film indicates a long-range stacking order in the normal direction of the substrate. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) images of the MFA LDH/Mn-TPPS UTFs reveal a continuous and uniform surface morphology. Cyclic voltammetry, impedance spectroscopy, and chronoamperometry were used to evaluate the electrochemical performance of the film, and the results show that the MFA-0.5 (0.5 T magnetic field) CoFe-LDH/Mn-TPPS-modified electrode displays the strongest redox current peaks and fastest electron transfer process compared with those of MFA-0 (without magnetic-field) and MFA-0.15 (0.15 T magnetic field). Furthermore, the MFA-0.5 CoFe-LDH/Mn-TPPS exhibits remarkable electrocatalytic activity toward the oxidation of glucose with a linear response range (0.1-15 mM; R(2) = 0.999), low detection limit (0.79 μM) and high sensitivity (66.3 μA mM(-1) cm(-2)). In addition, the glucose sensor prepared by the MFA LBL method also shows good selectivity and reproducibility as well as resistance to poisoning in a chloride ion solution. Therefore, the novel strategy in this work creates new opportunities for the fabrication of nonenzyme sensors with prospective applications in practical detection.
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Affiliation(s)
- Mingfei Shao
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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Ladhari N, Ringwald C, Ersen O, Florea I, Hemmerlé J, Ball V. Reactive layer-by-layer deposition of poly(ethylene imine) and a precursor of TiO2: influence of the sodium chloride concentration on the film growth, interaction with hexacyanoferrate anions, and particle distribution in the film. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:7934-7943. [PMID: 21619015 DOI: 10.1021/la201106r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Films prepared according to a layer-by-layer (LBL) manner find increasing importance in many applications such as coatings with dedicated optical or electronic properties, particularly when including nanomaterials. An alternative way to prepare such hybrid layer-by-layer coatings is to perform sol-gel chemistry in a layer-by-layer manner. In this article, we highlight the importance of the NaCl concentration as a parameter to control the growth as well as the properties of LBL films made from poly(ethylene imine) as the organic counterpart and titanium IV (bisammoniumlactato)dihydroxyde ([Ti(lac)(2)(OH)(2)](2-)) as the precursor of TiO(2). An increase in the sodium chloride concentration leads to the faster growth of the film and to a decrease in the number of hexacyanoferrate anions remaining in the film after a buffer rinse. This may be due to a progressive increase in the fraction of negatively charged TiO(2) as suggested by transmission electron microscopy. In the presence of 0.5 M NaCl, the fraction of TiO(2) is close to 60% in mass. As a surprising finding, the films produced from 0.15 M NaCl are not homogeneously filled with TiO(2) even if the film is produced in an LBL fashion. The increased concentration of TiO(2) at the film-solution interface could constitute a barrier for the incorporation of the negatively charged redox probe.
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Affiliation(s)
- Nadia Ladhari
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 977, 11 rue Humann, 67085 Strasbourg, Cédex, France
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Pichon BP, Pauly M, Marie P, Leuvrey C, Begin-Colin S. Tunable magnetic properties of nanoparticle two-dimensional assemblies addressed by mixed self-assembled monolayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6235-6243. [PMID: 21495667 DOI: 10.1021/la105052z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Assemblies of magnetic nanoparticles (NPs) are intensively studied due to their high potential applications in spintronic, magnetic and magneto-electronic. The fine control over NP density, interdistance, and spatial arrangement onto substrates is of key importance to govern the magnetic properties through dipolar interactions. In this study, magnetic iron oxide NPs have been assembled on surfaces patterned with self-assembled monolayers (SAMs) of mixed organic molecules. The modification of the molar ratio between coadsorbed 11-mercaptoundecanoic acid (MUA) and mercaptododecane (MDD) on gold substrates is shown to control the size of NPs domains and thus to modulate the characteristic magnetic properties of the assemblies. Moreover, NPs can be used to indirectly probe the structure of SAMs in domains at the nanometer scale.
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Affiliation(s)
- Benoit P Pichon
- Institut de Physique et de Chimie des Matériaux de Strasbourg, 23 rue du Loess-BP 43, 67034 Strasbourg Cedex 2, France.
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Lavalle P, Voegel JC, Vautier D, Senger B, Schaaf P, Ball V. Dynamic aspects of films prepared by a sequential deposition of species: perspectives for smart and responsive materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:1191-221. [PMID: 21264957 DOI: 10.1002/adma.201003309] [Citation(s) in RCA: 161] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Revised: 10/26/2010] [Indexed: 05/23/2023]
Abstract
The deposition of surface coatings using a step-by-step approach from mutually interacting species allows the fabrication of so called "multilayered films". These coatings are very versatile and easy to produce in environmentally friendly conditions, mostly from aqueous solution. They find more and more applications in many hot topic areas, such as in biomaterials and nanoelectronics but also in stimuli-responsive films. We aim to review the most recent developments in such stimuli-responsive coatings based on layer-by-layer (LBL) depositions in relationship to the properties of these coatings. The most investigated stimuli are based on changes in ionic strength, temperature, exposure to light, and mechanical forces. The possibility to induce a transition from linear to exponential growth in thickness and to change the charge compensation from "intrinsic" to "extrinsic" by controlling parameters such as temperature, pH, and ionic strength are the ways to confer their responsiveness to the films. Chemical post-modifications also allow to significantly modify the film properties.
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Affiliation(s)
- Philippe Lavalle
- Institut National de la Santé et de la Recherche Médicale, Unité 977, 11 rue Humann, Strasbourg Cedex, France
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Amali AJ, Saravanan P, Rana RK. Tailored Anisotropic Magnetic Chain Structures Hierarchically Assembled from Magnetoresponsive and Fluorescent Components. Angew Chem Int Ed Engl 2011; 50:1318-21. [DOI: 10.1002/anie.201005619] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Indexed: 01/24/2023]
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25
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Amali AJ, Saravanan P, Rana RK. Tailored Anisotropic Magnetic Chain Structures Hierarchically Assembled from Magnetoresponsive and Fluorescent Components. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201005619] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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26
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Shao M, Wei M, Evans DG, Duan X. Magnetic-field-assisted assembly of CoFe layered double hydroxide ultrathin films with enhanced electrochemical behavior and magnetic anisotropy. Chem Commun (Camb) 2011; 47:3171-3. [DOI: 10.1039/c0cc04859c] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Dey S, Mohanta K, Pal AJ. Magnetic-field-assisted layer-by-layer electrostatic assembly of ferromagnetic nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:9627-9631. [PMID: 20469859 DOI: 10.1021/la101132z] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We report that layer-by-layer (LbL) electrostatic assembly of Fe(3)O(4) nanoparticles can be supplemented by orienting magnetic domains of the nanoparticles. With the oriented domains of ionic-capped nanoparticles, both magnetic and electrostatic forces of attraction become operative during the LbL deposition process. The magnetic-field-assisted LbL adsorption process has been evidenced by increased electronic absorbance of the films. While atomic force microscopy studies rule out formation of multiple layers during a single adsorption process, magnetic force microscopy images evidence oriented domains in the LbL films. The results show a novel route for LbL deposition of ferromagnetic nanoparticles with oriented magnetic domains in the thin films.
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Affiliation(s)
- Sukumar Dey
- Department of Solid State Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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Mjahed H, Voegel JC, Chassepot A, Senger B, Schaaf P, Boulmedais F, Ball V. Turbidity diagrams of polyanion/polycation complexes in solution as a potential tool to predict the occurrence of polyelectrolyte multilayer deposition. J Colloid Interface Sci 2010; 346:163-71. [DOI: 10.1016/j.jcis.2010.02.042] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2010] [Revised: 02/17/2010] [Accepted: 02/18/2010] [Indexed: 11/30/2022]
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29
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Gao Y, Zhang X, Yin Z, Qu S, You J, Chen N. Magnetic Properties of FePt Nanoparticles Prepared by a Micellar Method. NANOSCALE RESEARCH LETTERS 2009; 5:1-6. [PMID: 20652124 PMCID: PMC2893845 DOI: 10.1007/s11671-009-9433-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2009] [Accepted: 09/01/2009] [Indexed: 05/07/2023]
Abstract
FePt nanoparticles with average size of 9 nm were synthesized using a diblock polymer micellar method combined with plasma treatment. To prevent from oxidation under ambient conditions, immediately after plasma treatment, the FePt nanoparticle arrays were in situ transferred into the film-growth chamber where they were covered by an SiO2 overlayer. A nearly complete transformation of L10 FePt was achieved for samples annealed at temperatures above 700 °C. The well control on the FePt stoichiometry and avoidance from surface oxidation largely enhanced the coercivity, and a value as high as 10 kOe was obtained in this study. An evaluation of magnetic interactions was made using the so-called isothermal remanence (IRM) and dc-demagnetization (DCD) remanence curves and Kelly-Henkel plots (ΔM measurement). The ΔM measurement reveals that the resultant FePt nanoparticles exhibit a rather weak interparticle dipolar coupling, and the absence of interparticle exchange interaction suggests no significant particle agglomeration occurred during the post-annealing. Additionally, a slight parallel magnetic anisotropy was also observed. The results indicate the micellar method has a high potential in preparing FePt nanoparticle arrays used for ultrahigh density recording media.
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Affiliation(s)
- Y Gao
- Key Lab of Semiconductor Materials Science, Institute of Semiconductors, CAS, Beijing, 100083, People's Republic of China.
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