1
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Takashima H, Inaguma Y, Nagao M, Murakami K. Hexagonal Boron Nitride Seed Layer-Assisted van der Waals Growth of BaSnO 3 Perovskite Films. ACS OMEGA 2023; 8:28778-28782. [PMID: 37576659 PMCID: PMC10413831 DOI: 10.1021/acsomega.3c03666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 07/18/2023] [Indexed: 08/15/2023]
Abstract
We have succeeded in obtaining BaSnO3 perovskite thin films with remarkable near-infrared luminescence by van der Waals growth. The films were grown on quartz glass substrates by pulsed laser deposition using hexagonal boron nitride as the seed layer, and their crystallinity was confirmed by X-ray diffraction and cross-sectional transmission electron microscopy. The near-infrared emission of the grown film exhibited a broad emission peak centered at 920 nm. The transparency of the BaSnO3 film (thickness = 1000 nm)/ hexagonal boron nitride /double-sided optically polished quartz glass substrate was approximately 90% at approximately 500 nm with or without the BaSnO3 film. Films showing remarkable near-infrared emission and high transparency obtained by van der Waals-type growth could be used in practical wavelength conversion devices that improve the efficiency of Si single-crystal solar cells. The hexagonal boron nitride seed layer supporting the van der Waals growth is an effective method for high-quality crystal growth of films. It can be used for perovskite-type oxides with many functionalities.
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Affiliation(s)
- Hiroshi Takashima
- National
Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Yoshiyuki Inaguma
- Department
of Chemistry, Faculty of Science, Gakushuin
University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Masayoshi Nagao
- National
Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Katsuhisa Murakami
- National
Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
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2
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Küçükcan B, Günay B, Gordesli-Duatepe FP, Sağlam Ö. Langmuir-Blodgett deposition and physicochemical surface characterization of two-dimensional perovskite nanosheets on ITO-PET substrates. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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3
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Shi Y, Yamamoto E, Kobayashi M, Osada M. Automated One-Drop Assembly for Facile 2D Film Deposition. ACS APPLIED MATERIALS & INTERFACES 2023; 15:22737-22743. [PMID: 36999230 DOI: 10.1021/acsami.3c02250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The effective application of 2D materials is strongly dependent on the mass production of high-quality large-area 2D thin films. Here, we demonstrate a strategy for the automated manufacturing of high-quality 2D thin films using a modified drop-casting approach. Our approach is simple; by using an automated pipette, a dilute aqueous suspension is dropped onto a substrate heated on a hotplate, and controlled convection by Marangoni flow and liquid removal causes the nanosheets to come together to form a tile-like monolayer film in 1-2 min. Ti0.87O2 nanosheets are utilized as a model system for investigating the control parameters such as concentrations, suction speeds, and substrate temperatures. We perform the automated one-drop assembly of a range of 2D nanosheets (metal oxides, graphene oxide, and hexagonal boron nitride) and successfully fabricate various functional thin films in multilayered, heterostructured, and sub-micrometer-thick forms. Our deposition method enables on-demand large-size (>2 inchϕ) manufacturing of high-quality 2D thin films while reducing the time and sample consumption.
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Affiliation(s)
- Yue Shi
- Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Nagoya 464-8601, Japan
| | - Eisuke Yamamoto
- Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Nagoya 464-8601, Japan
| | - Makoto Kobayashi
- Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Nagoya 464-8601, Japan
| | - Minoru Osada
- Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Nagoya 464-8601, Japan
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
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4
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Kim HJ, Morita S, Byun KN, Shi Y, Taniguchi T, Yamamoto E, Kobayashi M, Ebina Y, Sasaki T, Osada M. Ultrahigh Energy Storage in 2D High-κ Perovskites. NANO LETTERS 2023; 23:3788-3795. [PMID: 37126862 DOI: 10.1021/acs.nanolett.3c00079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Dielectric capacitors have greater power densities than batteries, and, unlike batteries, they do not utilize chemical reactions during cycling. Thus, they can become ideal, safe energy storage devices. However, dielectric capacitors yield rather low energy densities compared with other energy storage devices such as batteries and supercapacitors. Here, we present a rational approach for designing ultrahigh energy storage capacitors using two-dimensional (2D) high-κ dielectric perovskites (Ca2Nam-3NbmO3m+1; m = 3-6). Individual Ca2Nam-3NbmO3m+1 nanosheets exhibit an ultrahigh dielectric strength (638-1195 MV m-1) even in the monolayer form, which exceeds those of conventional dielectric materials. Multilayer stacked nanosheet capacitors exhibit ultrahigh energy densities (174-272 J cm-3), high efficiencies (>90%), excellent reliability (>107 cycles), and temperature stability (-50-300 °C); the maximum energy density is much higher than those of conventional dielectric materials and even comparable to those of lithium-ion batteries. Enhancing the energy density may make dielectric capacitors more competitive with batteries.
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Affiliation(s)
- Hyung-Jun Kim
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
| | - Shu Morita
- Institute of Materials and Systems for Sustainability (IMaSS) and Department of Materials Chemistry, Nagoya University, Nagoya 464-8601, Japan
| | - Ki-Nam Byun
- Institute of Materials and Systems for Sustainability (IMaSS) and Department of Materials Chemistry, Nagoya University, Nagoya 464-8601, Japan
| | - Yue Shi
- Institute of Materials and Systems for Sustainability (IMaSS) and Department of Materials Chemistry, Nagoya University, Nagoya 464-8601, Japan
| | - Takaaki Taniguchi
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
| | - Eisuke Yamamoto
- Institute of Materials and Systems for Sustainability (IMaSS) and Department of Materials Chemistry, Nagoya University, Nagoya 464-8601, Japan
| | - Makoto Kobayashi
- Institute of Materials and Systems for Sustainability (IMaSS) and Department of Materials Chemistry, Nagoya University, Nagoya 464-8601, Japan
| | - Yasuo Ebina
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
| | - Takayoshi Sasaki
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
| | - Minoru Osada
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
- Institute of Materials and Systems for Sustainability (IMaSS) and Department of Materials Chemistry, Nagoya University, Nagoya 464-8601, Japan
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5
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Roth WJ, Sasaki T, Wolski K, Gil B, Zapotoczny S, Čejka J, Kubů M, Mazur M, Ebina Y, Sakai N, Tang DM, Ma R. Exfoliating layered zeolite MFI into unilamellar nanosheets in solution as precursors for the synthesis of hierarchical nanocomposites and oriented films. Inorg Chem Front 2023. [DOI: 10.1039/d2qi02283d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The separation of layered MFI into unilamellar nanosheets in solution confirms the general validity of soft-chemical exfoliation for zeolites and allows top-down production of films with potential applications in separation and catalysis.
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Affiliation(s)
- Wieslaw J. Roth
- Jagiellonian University, Faculty of Chemistry, Gronostajowa 2, 30-387 Kraków, Poland
| | - Takayoshi Sasaki
- International Centre for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Karol Wolski
- Jagiellonian University, Faculty of Chemistry, Gronostajowa 2, 30-387 Kraków, Poland
| | - Barbara Gil
- Jagiellonian University, Faculty of Chemistry, Gronostajowa 2, 30-387 Kraków, Poland
| | - Szczepan Zapotoczny
- Jagiellonian University, Faculty of Chemistry, Gronostajowa 2, 30-387 Kraków, Poland
| | - Jiří Čejka
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, 12840 Prague 2, Czech Republic
| | - Martin Kubů
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, 12840 Prague 2, Czech Republic
| | - Michal Mazur
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, 12840 Prague 2, Czech Republic
| | - Yasuo Ebina
- International Centre for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Nobuyuki Sakai
- International Centre for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Dai-Ming Tang
- International Centre for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Renzhi Ma
- International Centre for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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6
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Sakai N, Sasaki T. Guidelines for Arranging 2D Nanosheets into Neatly Tiled Monolayer Films by a Spin-Coating Process. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:12399-12407. [PMID: 36172710 DOI: 10.1021/acs.langmuir.2c02211] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Neat (dense and nonoverlapped) monolayer tiling of 2D nanosheets on a substrate surface is very important because we can conduct artificial lattice-engineering by repeating the tiling process in a designed sequence to tailor various hierarchical nanostructures, leading to a range of sophisticated functions. It is recently reported that a facile spin-coating technique realizes the neat monolayer tiling of various 2D nanosheets. Establishing universal guidelines to neatly tile 2D nanosheets on substrates of various materials and size/shape is of essential importance to fully apply this technique, but the mechanism of how the nanosheets are tiled has not been clarified yet. In the present study, we have systematically examined the nanosheet deposition process at various rotation speeds by microscopic observations and found that the neat monolayer tiling of nanosheets is attained on the solvent surface during the spin-coating, and then the monolayer film is deposited onto the substrate surface from its center toward the edges upon evaporation of the solvent. Furthermore, we have clarified how the rotation speed and the nanosheet concentration govern the deposition behaviors in terms of neat tiling, overlap, or noncoverage in a such process. On the basis of the guidelines, we can predict the optimum spin-coating conditions for attaining the neat monolayer tiling of various nanosheets over an entire surface of the substrate.
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Affiliation(s)
- Nobuyuki Sakai
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takayoshi Sasaki
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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7
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Fang C, Yoon I, Hubble D, Tran TN, Kostecki R, Liu G. Recent Applications of Langmuir-Blodgett Technique in Battery Research. ACS APPLIED MATERIALS & INTERFACES 2022; 14:2431-2439. [PMID: 34985860 DOI: 10.1021/acsami.1c19064] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The Langmuir-Blodgett (LB) technique, in which monolayers are commonly transferred from a liquid/gas interface to a solid surface, allows convenient fabrication of highly ordered thin films with molecular-level precision. This method is widely applicable to substances ranging from organic molecules to nanomaterials. Therefore, LB methods have provided a critical toolbox for researchers to engineer nanoarchitectures. The LB fabrication process is also compatible with numerous substrate materials over large areas, which is advantageous for practical application. Despite its wide applicability, the LB strategy has not been extensively employed in battery studies. The versatility of LB film, along with the accumulated knowledge associated with this technique, makes it a promising platform for promoting battery chemistry evolution. This Review summarizes recent advances of LB methods for high-performance battery development, including preparation of electrode materials, fabrication of functional layers, and battery diagnosis and thus illustrates the high utility of LB approaches in battery research.
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Affiliation(s)
- Chen Fang
- Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Insun Yoon
- Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Dion Hubble
- Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Thanh-Nhan Tran
- Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Robert Kostecki
- Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Gao Liu
- Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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8
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Yano H, Sakai N, Ebina Y, Ma R, Osada M, Fujimoto K, Sasaki T. Construction of Multilayer Films and Superlattice- and Mosaic-like Heterostructures of 2D Metal Oxide Nanosheets via a Facile Spin-Coating Process. ACS APPLIED MATERIALS & INTERFACES 2021; 13:43258-43265. [PMID: 34459604 DOI: 10.1021/acsami.1c11463] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This study reports a design of a variety of nanostructured films of 2D oxide nanosheets. We systematically examined the deposition of perovskite-type Ca2Nb3O10- nanosheets by spin-coating their dimethyl sulfoxide dispersion. Neat and homogeneous monolayer tiling was attained on various substrates by selecting an optimum rotation speed, which was dependent on the nanosheet concentration. Repeating the optimized spin-coating process allowed for layer-by-layer deposition of the nanosheets into multilayer films with a designed layer number. Vertical superlattice heterostructures could also be assembled by alternately spin-coating the suspensions of Ca2Nb3O10- and Ti0.87O20.52- nanosheets. Furthermore, spin-coating of a mixed suspension of Ca2Nb3O10- and Ti0.87O20.52- nanosheets led to a mixed mosaic-like monolayer of these two nanosheets. The present study thus demonstrated spin-coating as a facile and powerful route to construct various nanostructures based on 2D oxide nanosheets.
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Affiliation(s)
- Hitomi Yano
- Department of Pure and Applied Chemistry, Faculty of Science and Chemistry, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Nobuyuki Sakai
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Yasuo Ebina
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Renzhi Ma
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Minoru Osada
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
- Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Nagoya 464-8601, Japan
| | - Kenjiro Fujimoto
- Department of Pure and Applied Chemistry, Faculty of Science and Chemistry, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan
| | - Takayoshi Sasaki
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
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9
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Liu H, Feng B, Bai X, Qi T, Wei Z, Liu R, Yin K, Gao J, Yang D, Zheng G, ten Elshof JE, Shan C, Sun Q, Yuan H. Two‐dimensional oxide based pressure sensors with high sensitivity. NANO SELECT 2021. [DOI: 10.1002/nano.202100053] [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] Open
Affiliation(s)
- Hao Liu
- Henan Key Laboratory of High Temperature Functional Ceramics School of Materials Science and Engineering Zhengzhou University Zhengzhou China
| | - Bo Feng
- Henan Institute of Product Quality Supervision and Inspection Zhengzhou China
| | - Xiaosong Bai
- Henan Key Laboratory of High Temperature Functional Ceramics School of Materials Science and Engineering Zhengzhou University Zhengzhou China
| | - Tianhang Qi
- Jiangsu Key Laboratory for Design & Manufacture of Micro/Nano Biomedical Instruments and School of Mechanical Engineering Southeast University Nanjing China
| | - Zhiyong Wei
- Jiangsu Key Laboratory for Design & Manufacture of Micro/Nano Biomedical Instruments and School of Mechanical Engineering Southeast University Nanjing China
| | - Ruichao Liu
- Henan Key Laboratory of High Temperature Functional Ceramics School of Materials Science and Engineering Zhengzhou University Zhengzhou China
| | - Keke Yin
- Henan Institute of Product Quality Supervision and Inspection Zhengzhou China
| | - Jinxing Gao
- Henan Key Laboratory of High Temperature Functional Ceramics School of Materials Science and Engineering Zhengzhou University Zhengzhou China
| | - Daoyuan Yang
- Henan Key Laboratory of High Temperature Functional Ceramics School of Materials Science and Engineering Zhengzhou University Zhengzhou China
| | - Guangchao Zheng
- Key Laboratory of Material Physics Ministry of Education School of Physics and Microelectronics Zhengzhou University Zhengzhou China
| | - Johan E. ten Elshof
- MESA+ Institute for Nanotechnology University of Twente Enschede The Netherlands
| | - Chongxin Shan
- Key Laboratory of Material Physics Ministry of Education School of Physics and Microelectronics Zhengzhou University Zhengzhou China
| | - Qi‐Jun Sun
- State Key Laboratory of Terahertz and Millimeter Waves and Department of Materials Science and Engineering City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong SAR China
| | - Huiyu Yuan
- Henan Key Laboratory of High Temperature Functional Ceramics School of Materials Science and Engineering Zhengzhou University Zhengzhou China
- Henan Institute of Product Quality Supervision and Inspection Zhengzhou China
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10
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Gbadamasi S, Mohiuddin M, Krishnamurthi V, Verma R, Khan MW, Pathak S, Kalantar-Zadeh K, Mahmood N. Interface chemistry of two-dimensional heterostructures - fundamentals to applications. Chem Soc Rev 2021; 50:4684-4729. [PMID: 33621294 DOI: 10.1039/d0cs01070g] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Two-dimensional heterostructures (2D HSs) have emerged as a new class of materials where dissimilar 2D materials are combined to synergise their advantages and alleviate shortcomings. Such a combination of dissimilar components into 2D HSs offers fascinating properties and intriguing functionalities attributed to the newly formed heterointerface of constituent components. Understanding the nature of the surface and the complex heterointerface of HSs at the atomic level is crucial for realising the desired properties, designing innovative 2D HSs, and ultimately unlocking their full potential for practical applications. Therefore, this review provides the recent progress in the field of 2D HSs with a focus on the discussion of the fundamentals and the chemistry of heterointerfaces based on van der Waals (vdW) and covalent interactions. It also explains the challenges associated with the scalable synthesis and introduces possible methodologies to produce large quantities with good control over the heterointerface. Subsequently, it highlights the specialised characterisation techniques to reveal the heterointerface formation, chemistry and nature. Afterwards, we give an overview of the role of 2D HSs in various emerging applications, particularly in high-power batteries, bifunctional catalysts, electronics, and sensors. In the end, we present conclusions with the possible solutions to the associated challenges with the heterointerfaces and potential opportunities that can be adopted for innovative applications.
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11
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Calorimetric metal vapor adsorption energies for characterizing industrial catalyst support materials. J Catal 2020. [DOI: 10.1016/j.jcat.2020.09.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Khan MS, Kim HJ, Kim YH, Ebina Y, Sugimoto W, Sasaki T, Osada M. Scalable Design of Two-Dimensional Oxide Nanosheets for Construction of Ultrathin Multilayer Nanocapacitor. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2003485. [PMID: 32851769 DOI: 10.1002/smll.202003485] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/09/2020] [Indexed: 06/11/2023]
Abstract
Large size of capacitors is the main hurdle in miniaturization of current electronic devices. Herein, a scalable solution-based layer-by-layer engineering of metallic and high-κ dielectric nanosheets into multilayer nanosheet capacitors (MNCs) with overall thickness of ≈20 nm is presented. The MNCs are built through neat tiling of 2D metallic Ru0.95 O2 0.2- and high-κ dielectric Ca2 NaNb4 O13 - nanosheets via the Langmuir-Blodgett (LB) approach at room temperature which is verified by cross-sectional high-resolution transmission electron microscopy (HRTEM). The resultant MNCs demonstrate a high capacitance of 40-52 µF cm-2 and low leakage currents down to 10-5 -10-6 A cm-2 . Such MNCs also possess complimentary in situ robust dielectric properties under high-temperature measurements up to 250 °C. Based on capacitance normalized by the thickness, the developed MNC outperforms state-of-the-art multilayer ceramic capacitors (MLCC, ≈22 µF cm-2 /5 × 104 nm) present in the market. The strategy is effective due to the advantages of facile, economical, and ambient temperature solution assembly.
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Affiliation(s)
- Muhammad Shuaib Khan
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, 305-0044, Japan
- Department of Nanoscience and Engineering, Waseda University, Shinjyuku, Tokyo, 169-8555, Japan
| | - Hyung-Jun Kim
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, 305-0044, Japan
| | - Yoon-Hyun Kim
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, 305-0044, Japan
| | - Yasuo Ebina
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, 305-0044, Japan
| | - Wataru Sugimoto
- Materials and Chemical Engineering, Shinshu University, Ueda, Nagano, 386-8567, Japan
| | - Takayoshi Sasaki
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, 305-0044, Japan
| | - Minoru Osada
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, 305-0044, Japan
- Department of Nanoscience and Engineering, Waseda University, Shinjyuku, Tokyo, 169-8555, Japan
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13
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Zhang W, Uppuluri R, Mallouk TE, Campbell CT. Silver Adsorption on Calcium Niobate(001) Nanosheets: Calorimetric Energies That Explain Sinter-Resistant Support. J Am Chem Soc 2020; 142:15751-15763. [PMID: 32794402 DOI: 10.1021/jacs.0c05044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Metal nanoparticles deposited on oxide supports are essential to many technologies, including catalysts, fuel cells, and electronics. Therefore, understanding the chemical bonding strength between metal nanoparticles and oxide surfaces is of great interest. The adsorption energetics, adhesion energy, and adsorbate structure of Ag on dehydrated HCa2Nb3O10(001) nanosheets at 300 K have been studied using metal adsorption calorimetry and surface spectroscopies. These dehydrated ("dh") calcium niobate nanosheets (dh-HCa2Nb3O10(001)) have the stoichiometry Ca4Nb6O19. They impart unusual stability to metal nanoparticles when used as catalyst supports and are easy-to-prepare by Langmuir-Blodgett (LB) techniques, highly ordered, and essentially single-crystal surfaces of mixed oxides with a huge ratio of terrace to edge sites. Below the monolayer coverage, Ag grows on dh-HCa2Nb3O10(001) as 2D islands of thickness ∼2 layers. The differential heat of Ag adsorption is initially ∼303 kJ/mol, increasing slowly to ∼338 kJ/mol by 0.8 ML. At higher coverages, Ag atoms mainly add on top of these 2D islands, growing 3D nanoparticles of increasing thickness, as the heat decreases asymptotically toward silver's heat of sublimation (285 kJ/mol). The adhesion energy of Ag(s) to this Ca niobate surface is estimated to be 4.33 J/m2, larger than that on any oxide surface previously measured. This explains the sinter resistance reported for metal nanoparticles on this support. Electron transfer from Ag into the calcium niobate is also measured. These results demonstrate an easy way to do single-crystal-type surface science studies-and especially thermochemical measurements-on the complex surfaces of mixed oxides: using LB-deposited perovskite nanosheets and ultrahigh-vacuum annealing in O2.
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Affiliation(s)
- Wei Zhang
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Ritesh Uppuluri
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Thomas E Mallouk
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States.,Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States.,International Centre for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Charles T Campbell
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
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14
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Awaya K, Ida S. A perfectly oriented, free-standing and transparent titania nanosheet film with the band gap of a monolayer. Chem Commun (Camb) 2020; 56:9811-9814. [PMID: 32706013 DOI: 10.1039/d0cc04158k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A perfectly oriented, free-standing and transparent titania nanosheet film was prepared using the spin-coating technique. The free-standing film (thickness: ∼210 nm) showed a wide band gap that corresponded to that of the monolayer nanosheet despite the stacking of hundreds of layers.
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Affiliation(s)
- Keisuke Awaya
- Graduate School of Science and Technology Kumamoto University, 2-39-1, Kurokami Chuo-ku, Kumamoto 860-8555, Japan.
| | - Shintaro Ida
- Graduate School of Science and Technology Kumamoto University, 2-39-1, Kurokami Chuo-ku, Kumamoto 860-8555, Japan.
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15
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Awaya K, Ida S. Electrochemical OER/ORR Activity of Ultrathin Hexagonal Nickel-Cobalt Hydroxide Nanosheet Films with Controlled Layer Number. CHEM LETT 2020. [DOI: 10.1246/cl.200283] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Keisuke Awaya
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami Chuo-ku, Kumamoto 860-8555, Japan
| | - Shintaro Ida
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami Chuo-ku, Kumamoto 860-8555, Japan
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16
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Timmerman MA, Xia R, Le PTP, Wang Y, ten Elshof JE. Metal Oxide Nanosheets as 2D Building Blocks for the Design of Novel Materials. Chemistry 2020; 26:9084-9098. [PMID: 32077166 PMCID: PMC7496187 DOI: 10.1002/chem.201905735] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/17/2020] [Indexed: 01/08/2023]
Abstract
Research into 2-dimensional materials has soared during the last couple of years. Next to van der Waals type 2D materials such as graphene and h-BN, less well-known oxidic 2D equivalents also exist. Most 2D oxide nanosheets are derived from layered metal oxide phases, although few 2D oxide phases can be also made by bottom-up solution syntheses. Owing to the strong electrostatic interactions within layered metal oxide crystals, a chemical process is usually needed to delaminate them into their 2D constituents. This Review article provides an overview of the synthesis of oxide nanosheets, and methods to assemble them into nanocomposites, mono- or multilayer films. In particular, the use of Langmuir-Blodgett methods to form monolayer films over large surface areas, and the emerging use of ink jet printing to form patterned functional films is emphasized. The utilization of nanosheets in various areas of technology, for example, electronics, energy storage and tribology, is illustrated, with special focus on their use as seed layers for epitaxial growth of thin films, and as electrochemically active electrodes for supercapacitors and Li ion batteries.
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Affiliation(s)
- Melvin A. Timmerman
- MESA+ Institute for NanotechnologyUniversity of TwenteP.O. Box 2177500AEEnschedeThe Netherlands
| | - Rui Xia
- MESA+ Institute for NanotechnologyUniversity of TwenteP.O. Box 2177500AEEnschedeThe Netherlands
| | - Phu T. P. Le
- MESA+ Institute for NanotechnologyUniversity of TwenteP.O. Box 2177500AEEnschedeThe Netherlands
| | - Yang Wang
- MESA+ Institute for NanotechnologyUniversity of TwenteP.O. Box 2177500AEEnschedeThe Netherlands
| | - Johan E. ten Elshof
- MESA+ Institute for NanotechnologyUniversity of TwenteP.O. Box 2177500AEEnschedeThe Netherlands
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17
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Taniguchi T, Li S, Nurdiwijayanto L, Kobayashi Y, Saito T, Miyata Y, Obata S, Saiki K, Yokoi H, Watanabe K, Taniguchi T, Tsukagoshi K, Ebina Y, Sasaki T, Osada M. Tunable Chemical Coupling in Two-Dimensional van der Waals Electrostatic Heterostructures. ACS NANO 2019; 13:11214-11223. [PMID: 31580052 DOI: 10.1021/acsnano.9b04256] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Heterostructures of two-dimensional (2D) atomic crystals provide fascinating molecular-scale design elements for emergent physical phenomena and functional materials, as integrating distinct monolayers into vertical heterostructures can afford coupling between disparate properties. However, the available examples have been limited to either van der Waals (vdW) or electrostatic (ES) heterostructures that are solely composed of noncharged and charged monolayers, respectively. Here, we propose a "vdW-ES heterostructure" chemical design in which charge-neutral and charged monolayer-building blocks with highly disparate chemical and physical properties are conjugated vertically through asymmetrically charged interfaces. We demonstrate vdW-ES heteroassembly of semiconducting MoS2 and dielectric Ca2Nb3O10- (CNO) monolayers using an amphipathic molecular starch, resulting in the emergence of trion luminescence observed at the lowest energy among MoS2-related materials, probably due to interfacial confinement effects given by vdW-ES dual interactions. In addition, interface engineering leads to tailored exciton of the vdW/ES heterostructures owing to the pronounced dielectric proximity effects, bringing an intriguing interlayer chemistry to modify 2D materials. Furthermore, the current approach was successfully extended to create a graphene/CNO heterostructure, which verifies the versatility of the preparative method.
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Affiliation(s)
- Takaaki Taniguchi
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science(NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan
| | - Shisheng Li
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science(NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan
| | - Leanddas Nurdiwijayanto
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science(NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan
| | - Yu Kobayashi
- Department of Physics , Tokyo Metropolitan University , Hachioji , Tokyo 192-0397 , Japan
| | - Tetsuki Saito
- Department of Physics , Tokyo Metropolitan University , Hachioji , Tokyo 192-0397 , Japan
| | - Yasumitsu Miyata
- Department of Physics , Tokyo Metropolitan University , Hachioji , Tokyo 192-0397 , Japan
| | - Seiji Obata
- Department of Complexity Science and Engineering , Graduate School of Frontier Sciences, The University of Tokyo , Kashiwa , Chiba 277-8561 , Japan
| | - Koichiro Saiki
- Department of Complexity Science and Engineering , Graduate School of Frontier Sciences, The University of Tokyo , Kashiwa , Chiba 277-8561 , Japan
| | - Hiroyuki Yokoi
- Faculty of Advanced Science and Technology , Kumamoto University , Kumamoto 860-8555 , Japan
| | - Kenji Watanabe
- Research Center for Functional Materials , National Institute for Materials Science(NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan
| | - Takashi Taniguchi
- Research Center for Functional Materials , National Institute for Materials Science(NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan
| | - Kazuhito Tsukagoshi
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science(NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan
| | - Yasuo Ebina
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science(NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan
| | - Takayoshi Sasaki
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science(NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan
| | - Minoru Osada
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science(NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan
- Institute of Materials and Systems for Sustainability , Nagoya University , Furocho, Chikusa-ku, Nagoya 464-8603 , Japan
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18
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Sonotani A, Sano K, Wakayama S, Shimada T, Takagi S. Efficient Electron Injection from Excited Porphyrin to Titania Nanosheet. CHEM LETT 2018. [DOI: 10.1246/cl.180198] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Amane Sonotani
- Department of Applied Chemistry, Graduate Course of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397, Japan
| | - Keito Sano
- Department of Applied Chemistry, Graduate Course of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397, Japan
| | - Shouta Wakayama
- Department of Applied Chemistry, Graduate Course of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397, Japan
| | - Tetsuya Shimada
- Department of Applied Chemistry, Graduate Course of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397, Japan
| | - Shinsuke Takagi
- Department of Applied Chemistry, Graduate Course of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397, Japan
- Research Center for Hydrogen Energy-based Society (ReHES), Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397, Japan
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19
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Uppuluri R, Sen Gupta A, Rosas AS, Mallouk TE. Soft chemistry of ion-exchangeable layered metal oxides. Chem Soc Rev 2018; 47:2401-2430. [DOI: 10.1039/c7cs00290d] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Disassembly and re-assembly of layered metal oxides by soft chemical approaches can be used to tailor functionalities in artificial photosynthesis, energy storage, optics, and piezoelectrics.
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Affiliation(s)
- Ritesh Uppuluri
- Departments of Chemistry
- Biochemistry and Molecular Biology, and Physics, The Pennsylvania State University
- University Park
- Pennsylvania 16802
- USA
| | - Arnab Sen Gupta
- Department of Materials Science and Engineering
- The Pennsylvania State University
- University Park
- Pennsylvania 16802
- USA
| | - Alyssa S. Rosas
- Departments of Chemistry
- Biochemistry and Molecular Biology, and Physics, The Pennsylvania State University
- University Park
- Pennsylvania 16802
- USA
| | - Thomas E. Mallouk
- Departments of Chemistry
- Biochemistry and Molecular Biology, and Physics, The Pennsylvania State University
- University Park
- Pennsylvania 16802
- USA
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20
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Li BW, Osada M, Kim YH, Ebina Y, Akatsuka K, Sasaki T. Atomic Layer Engineering of High-κ Ferroelectricity in 2D Perovskites. J Am Chem Soc 2017; 139:10868-10874. [DOI: 10.1021/jacs.7b05665] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Bao-Wen Li
- World Premier International
Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Minoru Osada
- World Premier International
Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yoon-Hyun Kim
- World Premier International
Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yasuo Ebina
- World Premier International
Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Kosho Akatsuka
- World Premier International
Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takayoshi Sasaki
- World Premier International
Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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21
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Nurdiwijayanto L, Ma R, Sakai N, Sasaki T. Stability and Nature of Chemically Exfoliated MoS2 in Aqueous Suspensions. Inorg Chem 2017; 56:7620-7623. [DOI: 10.1021/acs.inorgchem.7b01354] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Leanddas Nurdiwijayanto
- International Center
for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Renzhi Ma
- International Center
for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Nobuyuki Sakai
- International Center
for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Takayoshi Sasaki
- International Center
for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
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22
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Sonotani A, Shimada T, Takagi S. “Size-matching Effect” in a Cationic Porphyrin–Titania Nanosheet Complex. CHEM LETT 2017. [DOI: 10.1246/cl.161146] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Amane Sonotani
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachioji, Tokyo 192-0397
| | - Tetsuya Shimada
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachioji, Tokyo 192-0397
- Center for Artificial Photosynthesis, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachioji, Tokyo 192-0397
| | - Shinsuke Takagi
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachioji, Tokyo 192-0397
- Center for Artificial Photosynthesis, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachioji, Tokyo 192-0397
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23
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Nguyen MD, Yuan H, Houwman EP, Dekkers M, Koster G, Ten Elshof JE, Rijnders G. Highly Oriented Growth of Piezoelectric Thin Films on Silicon Using Two-Dimensional Nanosheets as Growth Template Layer. ACS APPLIED MATERIALS & INTERFACES 2016; 8:31120-31127. [PMID: 27782380 DOI: 10.1021/acsami.6b09470] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Ca2Nb3O10 (CNOns) and Ti0.87O2 (TiOns) metal oxide nanosheets (ns) are used as a buffer layer for epitaxial growth of piezoelectric capacitor stacks on Si and Pt/Ti/SiO2/Si (Pt/Si) substrates. Highly (001)- and (110)-oriented Pb(Zr0.52Ti0.48)O3 (PZT) films are achieved by utilizing CNOns and TiOns, respectively. The piezoelectric capacitors are characterized by polarization and piezoelectric hysteresis loops and by fatigue measurements. The devices fabricated with SrRuO3 top and bottom electrodes directly on nanosheets/Si have ferroelectric and piezoelectric properties well comparable with devices that use more conventional oxide buffer layers (stacks) such as YSZ, CeO2/YSZ, or SrTiO3 on Si. The devices grown on nanosheets/Pt/Si with Pt top electrodes show significantly improved polarization fatigue properties over those of similar devices grown directly on Pt/Si. The differences in properties are ascribed to differences in the crystalline structures and the density of the films. These results show a route toward the fabrication of single crystal piezoelectric thin films and devices with high quality, long-lifetime piezoelectric capacitor structures on nonperovskite and even noncrystalline substrates such as glass or polished metal surfaces.
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Affiliation(s)
- Minh D Nguyen
- MESA+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500AE Enschede, The Netherlands
- Solmates B.V., Drienerlolaan 5, 7522NB Enschede, The Netherlands
- International Training Institute for Materials Science, Hanoi University of Science and Technology , Dai Co Viet 1, Hanoi 10000, Vietnam
| | - Huiyu Yuan
- MESA+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500AE Enschede, The Netherlands
| | - Evert P Houwman
- MESA+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500AE Enschede, The Netherlands
| | - Matthijn Dekkers
- Solmates B.V., Drienerlolaan 5, 7522NB Enschede, The Netherlands
| | - Gertjan Koster
- MESA+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500AE Enschede, The Netherlands
| | - Johan E Ten Elshof
- MESA+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500AE Enschede, The Netherlands
| | - Guus Rijnders
- MESA+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500AE Enschede, The Netherlands
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24
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Sakamoto R, Takada K, Sun X, Pal T, Tsukamoto T, Phua EJH, Rapakousiou A, Hoshiko K, Nishihara H. The coordination nanosheet (CONASH). Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.12.001] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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25
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Li BW, Osada M, Ebina Y, Ueda S, Sasaki T. Coexistence of Magnetic Order and Ferroelectricity at 2D Nanosheet Interfaces. J Am Chem Soc 2016; 138:7621-5. [DOI: 10.1021/jacs.6b02722] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Bao-Wen Li
- International
Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
| | - Minoru Osada
- International
Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
| | - Yasuo Ebina
- International
Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
| | - Shigenori Ueda
- Synchrotron
X-ray Station at SPring-8, National Institute for Materials Science (NIMS), Sayo, Hyogo 679-5148, Japan
- Quantum
Beam Unit, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0047, Japan
| | - Takayoshi Sasaki
- International
Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
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26
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Topological “interfacial” polymer chemistry: Dependency of polymer “shape” on surface morphology and stability of layer structures when heating organized molecular films of cyclic and linear block copolymers ofn-butyl acrylate-ethylene oxide. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/polb.23936] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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27
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Harrison KL, Biedermann LB, Zavadil KR. Mechanical Properties of Water-Assembled Graphene Oxide Langmuir Monolayers: Guiding Controlled Transfer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:9825-9832. [PMID: 26299510 DOI: 10.1021/acs.langmuir.5b01994] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Liquid-phase transfer of graphene oxide (GO) and reduced graphene oxide (RGO) monolayers is investigated from the perspective of the mechanical properties of these films. Monolayers are assembled in a Langmuir-Blodgett trough, and oscillatory barrier measurements are used to characterize the resulting compressive and shear moduli as a function of surface pressure. GO monolayers are shown to develop a significant shear modulus (10-25 mN/m) at relevant surface pressures while RGO monolayers do not. The existence of a shear modulus indicates that GO is acting as a two-dimensional solid driven by strong interaction between the individual GO sheets. The absence of such behavior in RGO is attributed to the decrease in oxygen moieties on the sheet basal plane, permitting RGO sheets to slide across one another with minimum energy dissipation. Knowledge of this two-dimensional solid behavior is exploited to successfully transfer large-area, continuous GO films to hydrophobic Au substrates. The key to successful transfer is the use of shallow-angle dipping designed to minimize tensile stress present during the insertion or extraction of the substrate. A shallow dip angle on hydrophobic Au does not impart a beneficial effect for RGO monolayers, as these monolayers do not behave as two-dimensional solids and do not remain coherent during the transfer process. We hypothesize that this observed correlation between monolayer mechanical properties and continuous film transfer success is more universally applicable across substrate hydrophobicities and could be exploited to control the transfer of films composed of two-dimensional materials.
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Affiliation(s)
- Katharine L Harrison
- Joint Center for Energy Storage Research and ‡Materials Science and Engineering, Sandia National Laboratories , Albuquerque, New Mexico 87185, United States
| | - Laura B Biedermann
- Joint Center for Energy Storage Research and ‡Materials Science and Engineering, Sandia National Laboratories , Albuquerque, New Mexico 87185, United States
| | - Kevin R Zavadil
- Joint Center for Energy Storage Research and ‡Materials Science and Engineering, Sandia National Laboratories , Albuquerque, New Mexico 87185, United States
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28
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Fujimori A, Kikkawa T, Meng Q, Shibasaki Y. Control of Fine Structure in "Polymer Nanosphere Multilayered Organization" and Enhancement of Its Optical Property. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:9177-9187. [PMID: 26255718 DOI: 10.1021/acs.langmuir.5b01162] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This paper reports on a new functionality exhibited by "polymer nanosphere multilayered organization", a new type of molecular organization, and the relationship between their structure and function. The polymer nanosphere multilayered organization is a fine structural material formed by the accumulation of single-particle layers of a hydrophobic polymer at the air/water interface; these single-particle layers have uniform height along the c-axis. By employing the "alternate compression-relaxation method", high-density, low-defect particle layers are formed with a clear increase in their crystallite sizes. In the case of a ternary comb copolymer containing a carbazole ring, one particle is formed by the assembly of approximately 60 units of collapsed monolayer-like double layers. This structure is stabilized by the formation of side-chain crystals in the interlayer, with oriented π-π stacking of carbazole rings, resulting in enhanced fluorescence emission intensity.
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Affiliation(s)
- Atsuhiro Fujimori
- Graduate School of Science and Engineering, Saitama University , 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan
| | - Takahiro Kikkawa
- Graduate School of Science and Engineering, Saitama University , 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan
| | - Qi Meng
- Graduate School of Science and Engineering, Saitama University , 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan
| | - Yuji Shibasaki
- Department of Chemistry and Bioengineering, Faculty of Engineering, Iwate University , Ueda 4-3-5, Morioka, Iwate 020-8551, Japan
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29
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Pal T, Kambe T, Kusamoto T, Foo ML, Matsuoka R, Sakamoto R, Nishihara H. Interfacial Synthesis of Electrically Conducting Palladium Bis(dithiolene) Complex Nanosheet. Chempluschem 2015; 80:1255-1258. [DOI: 10.1002/cplu.201500206] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/19/2015] [Indexed: 11/10/2022]
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30
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Kim YH, Dong L, Osada M, Li BW, Ebina Y, Sasaki T. Artificial design for new ferroelectrics using nanosheet-architectonics concept. NANOTECHNOLOGY 2015; 26:244001. [PMID: 26019149 DOI: 10.1088/0957-4484/26/24/244001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Control over the emergence of ferroelectric order remains a fundamental challenge for the rational design of artificial materials with novel properties. Here we report a new strategy for artificial design of layered perovskite ferroelectrics by using oxide nanosheets (high-k dielectric Ca2Nb3O10 and insulating Ti0.87O2) as a building block. We approached the preparation of superlattice films by a layer-by-layer assembly involving Langmuir-Blodgett deposition. The artificially fabricated (Ti0.87O2/Ca2Nb3O10)2(Ti0.87O2) superlattices are structurally unique, which is not feasible to create in the bulk form. By such an artificial structuring, we found that (Ti0.87O2/Ca2Nb3O10)2(Ti0.87O2) superlattices possess a new form of interface coupling, which gives rise to ferroelectricity with a good fatigue-free characteristic. Considering the flexibility of self-assembled nanosheet interfaces, this technique provides a route to synthesize a new kind of layered ferroelectric oxides.
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Affiliation(s)
- Yoon-Hyun Kim
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan. Grduate School of Advanced Science and Engineering, Waseda University, Shinjyu-ku, Tokyo 169-8555, Japan
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Sakamoto R, Hoshiko K, Liu Q, Yagi T, Nagayama T, Kusaka S, Tsuchiya M, Kitagawa Y, Wong WY, Nishihara H. A photofunctional bottom-up bis(dipyrrinato)zinc(II) complex nanosheet. Nat Commun 2015; 6:6713. [PMID: 25831973 PMCID: PMC4396372 DOI: 10.1038/ncomms7713] [Citation(s) in RCA: 263] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 02/18/2015] [Indexed: 12/22/2022] Open
Abstract
Two-dimensional polymeric nanosheets have recently gained much attention, particularly top-down nanosheets such as graphene and metal chalcogenides originating from bulk-layered mother materials. Although molecule-based bottom-up nanosheets manufactured directly from molecular components can exhibit greater structural diversity than top-down nanosheets, the bottom-up nanosheets reported thus far lack useful functionalities. Here we show the design and synthesis of a bottom-up nanosheet featuring a photoactive bis(dipyrrinato)zinc(II) complex motif. A liquid/liquid interfacial synthesis between a three-way dipyrrin ligand and zinc(II) ions results in a multi-layer nanosheet, whereas an air/liquid interfacial reaction produces a single-layer or few-layer nanosheet with domain sizes of >10 μm on one side. The bis(dipyrrinato)zinc(II) metal complex nanosheet is easy to deposit on various substrates using the Langmuir-Schäfer process. The nanosheet deposited on a transparent SnO2 electrode functions as a photoanode in a photoelectric conversion system, and is thus the first photofunctional bottom-up nanosheet.
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Affiliation(s)
- Ryota Sakamoto
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ken Hoshiko
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Qian Liu
- Institute of Molecular Functional Materials, Department of Chemistry and Partner State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, Waterloo Road, Hong Kong, China
| | - Toshiki Yagi
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Tatsuhiro Nagayama
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shinpei Kusaka
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Mizuho Tsuchiya
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yasutaka Kitagawa
- Division of Chemical Engineering, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3, Machikaneyama, Toyonaka, Osaka 560-8531, Japan
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1, Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Wai-Yeung Wong
- Institute of Molecular Functional Materials, Department of Chemistry and Partner State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, Waterloo Road, Hong Kong, China
- HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen 518057, China
| | - Hiroshi Nishihara
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Nanosheet architectonics: a hierarchically structured assembly for tailored fusion materials. Polym J 2014. [DOI: 10.1038/pj.2014.111] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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33
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Lee BI, Jeong H, Byeon SH. Layer-by-Layer Deposition of Highly Transparent Multifunctional Gd2O3:RE/SiO2(RE = Eu and Tb) Films. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201400018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Yuan H, Lubbers R, Besselink R, Nijland M, Ten Elshof JE. Improved Langmuir-Blodgett titanate films via in situ exfoliation study and optimization of deposition parameters. ACS APPLIED MATERIALS & INTERFACES 2014; 6:8567-8574. [PMID: 24819117 DOI: 10.1021/am501380d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The exfoliation and deposition of large (10-100 μm) Ti0.87O2 and small (0.1-1 μm) Ti0.91O2 nanosheets from lepidocrocite-type protonated titanates was investigated for getting high quality films. Exfoliation was carried out with different tetra-alkyl ammonium ions (TAA(+)) and varying TAA(+)/H(+) ratios, and the colloidal solutions were characterized by small-angle X-ray scattering (SAXS) and ultraviolet-visible (UV-vis) spectroscopy. Using Langmuir-Blodgett deposition the titanate nanosheets were directly transferred onto a Si substrate. The resulting films were characterized by atomic force microscopy (AFM).The results indicate that the H1.07Ti1.73O4 titanate exfoliated at very low ratios of TAA(+)/H(+); no lower threshold for exfoliation was observed for the TAA(+) concentration. Nanosheets exfoliated at very low ratios of TAA(+)/H(+) typically showed a small size and porous surface. Subsequent exfoliation of the remaining layered titanate particles yielded much higher quality nanosheets. The optimized deposition parameters for Langmuir-Blodgett films suggest that the surface pressure is a key parameter to control the coverage of the film. The bulk concentration of nanosheets was found to be a less important deposition parameter in the LB deposition process. It only influenced whether the desired surface pressure could be reached at a given maximum degree of compression.
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Affiliation(s)
- Huiyu Yuan
- MESA+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500 AE Enschede, The Netherlands
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35
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Wang L, Sasaki T. Titanium Oxide Nanosheets: Graphene Analogues with Versatile Functionalities. Chem Rev 2014; 114:9455-86. [DOI: 10.1021/cr400627u] [Citation(s) in RCA: 493] [Impact Index Per Article: 49.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Lianzhou Wang
- Nanomaterials
Centre, School of Chemical Engineering and AIBN, The University of Queensland, St. Lucia, Brisbane, QLD, 4072, Australia
| | - Takayoshi Sasaki
- International
Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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Fujimori A, Arai S, Soutome Y, Hashimoto M. Improvement of thermal stability of enzyme via immobilization on Langmuir–Blodgett films of organo-modified aluminosilicate with high coverage. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.01.085] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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37
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Ogawa D, Akatsuka K, Fukumura T, Osada M, Sasaki T, Hasegawa T. Fabrication and Properties of Microcapacitors with a One-nanometer-thick Single Ti0.87O2 Nanosheet. CHEM LETT 2014. [DOI: 10.1246/cl.130925] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Daisuke Ogawa
- Department of Chemistry, The University of Tokyo
- CREST, Japan Science and Technology Agency
| | - Kosho Akatsuka
- CREST, Japan Science and Technology Agency
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science
| | - Tomoteru Fukumura
- Department of Chemistry, The University of Tokyo
- CREST, Japan Science and Technology Agency
- Kanagawa Academy of Science and Technology
| | - Minoru Osada
- CREST, Japan Science and Technology Agency
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science
| | - Takayoshi Sasaki
- CREST, Japan Science and Technology Agency
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science
| | - Tetsuya Hasegawa
- Department of Chemistry, The University of Tokyo
- CREST, Japan Science and Technology Agency
- Kanagawa Academy of Science and Technology
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Ariga K, Yamauchi Y, Mori T, Hill JP. 25th anniversary article: what can be done with the Langmuir-Blodgett method? Recent developments and its critical role in materials science. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:6477-512. [PMID: 24302266 DOI: 10.1002/adma.201302283] [Citation(s) in RCA: 270] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Indexed: 05/18/2023]
Abstract
The Langmuir-Blodgett (LB) technique is known as an elegant method for fabrication of well-defined layered structures with molecular level precision. Since its discovery the LB method has made an indispensable contribution to surface science, physical chemistry, materials chemistry and nanotechnology. However, recent trends in research might suggest the decline of the LB method as alternate methods for film fabrication such as layer-by-layer (LbL) assembly have emerged. Is LB film technology obsolete? This review is presented in order to challenge this preposterous question. In this review, we summarize recent research on LB and related methods including (i) advanced design for LB films, (ii) LB film as a medium for supramolecular chemistry, (iii) LB technique for nanofabrication and (iv) LB involving advanced nanomaterials. Finally, a comparison between LB and LbL techniques is made. The latter reveals the crucial role played by LB techniques in basic surface science, current advanced material sciences and nanotechnologies.
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Affiliation(s)
- Katsuhiko Ariga
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) PRESTO & CREST, JST, 1-1 Namiki, Tsukuba, 305-0044, Japan
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Butler SZ, Hollen SM, Cao L, Cui Y, Gupta JA, Gutiérrez HR, Heinz TF, Hong SS, Huang J, Ismach AF, Johnston-Halperin E, Kuno M, Plashnitsa VV, Robinson RD, Ruoff RS, Salahuddin S, Shan J, Shi L, Spencer MG, Terrones M, Windl W, Goldberger JE. Progress, challenges, and opportunities in two-dimensional materials beyond graphene. ACS NANO 2013; 7:2898-926. [PMID: 23464873 DOI: 10.1021/nn400280c] [Citation(s) in RCA: 1768] [Impact Index Per Article: 160.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Graphene's success has shown that it is possible to create stable, single and few-atom-thick layers of van der Waals materials, and also that these materials can exhibit fascinating and technologically useful properties. Here we review the state-of-the-art of 2D materials beyond graphene. Initially, we will outline the different chemical classes of 2D materials and discuss the various strategies to prepare single-layer, few-layer, and multilayer assembly materials in solution, on substrates, and on the wafer scale. Additionally, we present an experimental guide for identifying and characterizing single-layer-thick materials, as well as outlining emerging techniques that yield both local and global information. We describe the differences that occur in the electronic structure between the bulk and the single layer and discuss various methods of tuning their electronic properties by manipulating the surface. Finally, we highlight the properties and advantages of single-, few-, and many-layer 2D materials in field-effect transistors, spin- and valley-tronics, thermoelectrics, and topological insulators, among many other applications.
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Affiliation(s)
- Sheneve Z Butler
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
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40
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Kambe T, Sakamoto R, Hoshiko K, Takada K, Miyachi M, Ryu JH, Sasaki S, Kim J, Nakazato K, Takata M, Nishihara H. π-Conjugated Nickel Bis(dithiolene) Complex Nanosheet. J Am Chem Soc 2013; 135:2462-5. [DOI: 10.1021/ja312380b] [Citation(s) in RCA: 615] [Impact Index Per Article: 55.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Tetsuya Kambe
- Department of Chemistry, Graduate
School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ryota Sakamoto
- Department of Chemistry, Graduate
School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ken Hoshiko
- Department of Chemistry, Graduate
School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kenji Takada
- Department of Chemistry, Graduate
School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Mariko Miyachi
- Department of Chemistry, Graduate
School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ji-Heun Ryu
- Department of Electrical Engineering
and Computer Science, School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Sono Sasaki
- Department of Biobased Materials
Science, Graduate School of Science and Technology, Kyoto Institute of Technology, Hashigami-cho, Matsugasaki,
Sakyou-ku, Kyoto 606-8585, Japan
- Japan Synchrotron Radiation Research Institute (JASRI)/SPring-8, 1-1-1
Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Jungeun Kim
- Japan Synchrotron Radiation Research Institute (JASRI)/SPring-8, 1-1-1
Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Kazuo Nakazato
- Department of Electrical Engineering
and Computer Science, School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Masaki Takata
- Japan Synchrotron Radiation Research Institute (JASRI)/SPring-8, 1-1-1
Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
- SPring-8 Center, RIKEN, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148,
Japan
| | - Hiroshi Nishihara
- Department of Chemistry, Graduate
School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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41
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Usami H, Sasaki S. Fabrication and Photochemical Characterization of Organic Dye-Metal Oxide Hybrid Langmuir Blodgett Film. J PHOTOPOLYM SCI TEC 2013. [DOI: 10.2494/photopolymer.26.207] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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42
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Zou J, Kim F. Self-assembly of two-dimensional nanosheets induced by interfacial polyionic complexation. ACS NANO 2012; 6:10606-13. [PMID: 23134157 DOI: 10.1021/nn303608g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Significant progress has been made during the past decade in preparing nanosheets from a wide range of materials, which are actively pursued for various applications such as energy storage, catalysis, sensing, and membranes. One of the next critical challenges is developing a robust and versatile assembly method which allows construction of the nanosheets into functional structures tailored for each specific purpose. An interesting characteristic of nanosheets is that they often behave as charged macromolecules and thus can readily interact with an oppositely charged polyelectrolyte to form a stable complex. In this report, we demonstrate how such a complexation process could be utilized for directing the self-assembly of nanosheets. By confining the nanosheet-polyelectrolyte complexation at air-liquid or liquid-liquid interfaces, the nanosheets are successfully assembled into various mesoscale architectures including fibers, capsules, and films. Furthermore, incorporation of additional components such as nanoparticles or small molecules can be easily achieved for further tailoring of material properties. This novel assembly method opens a pathway to many useful nanosheet superstructures and may be further extended to other types of nanomaterials in general.
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Affiliation(s)
- Jianli Zou
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Kyoto 606-8501, Japan
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43
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Okamoto Y, Ida S, Hyodo J, Hagiwara H, Ishihara T. Synthesis and Photocatalytic Activity of Rhodium-Doped Calcium Niobate Nanosheets for Hydrogen Production from a Water/Methanol System without Cocatalyst Loading. J Am Chem Soc 2011; 133:18034-7. [DOI: 10.1021/ja207103j] [Citation(s) in RCA: 190] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Yohei Okamoto
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan,
| | - Shintaro Ida
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan,
- PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012
| | - Junji Hyodo
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan,
| | - Hidehisa Hagiwara
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan,
| | - Tatsumi Ishihara
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan,
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44
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Ozawa TC, Fukuda K, Ebina Y, Kosuda K, Sato A, Michiue Y, Kurashima K, Sasaki T. A bona fide two-dimensional percolation model: an insight into the optimum photoactivator concentration in La 2/3-x Eu x Ta 2O 7 nanosheets. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2011; 12:044601. [PMID: 27877409 PMCID: PMC5090487 DOI: 10.1088/1468-6996/12/4/044601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2011] [Revised: 07/07/2011] [Accepted: 02/13/2011] [Indexed: 06/06/2023]
Abstract
La-Eu solid solution nanosheets La2/3-x Eu x Ta2O7 have been synthesized, and their photoluminescence properties have been investigated. La2/3-x Eu x Ta2O7 nanosheets were prepared from layered perovskite compounds Li2La2/3-x Eu x Ta2O7 as the precursors by soft chemical exfoliation reactions. Both the precursors and the exfoliated nanosheets exhibit a decrease in intralayer lattice parameters as the Eu contents increase. However, there is a discontinuity in this trend between the nominal Eu content ranges x≤ 0.3 and x ≥ 0.4. This discontinuity is attributed to the difference in degree of TaO6 octahedra tilting for the La- and Eu-rich phases. La2/3-x Eu x Ta2O7 nanosheets exhibit red emission, characteristic of the f-f transitions in Eu3+ photoactivators. The photoluminescence emission can be obtained from both host and direct photoactivator excitation. However, photoluminescence emission through host excitation is much more dominant than that through direct photoactivator excitation, and this behavior is consistent with that of all the other rare-earth photoactivated nanosheets reported previously. The absolute photoluminescence quantum efficiency of the La2/3-x Eu x Ta2O7 nanosheets increases as the experimentally determined Eu contents increase up to x=0.45 and decrease above it. This result is in good agreement with the optimum photoactivator concentration expected from the percolation theory. These solid solution La2/3-x Eu x Ta2O7 nanosheets are excellent models for validating the theory of optimum photoactivator concentration in the truly two-dimensional photoactivator matrix.
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Affiliation(s)
- Tadashi C Ozawa
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Katsutoshi Fukuda
- Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
- Collaborative Innovation Center for Nanotech FIBER, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
| | - Yasuo Ebina
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Kosuke Kosuda
- Materials Analysis Station, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Akira Sato
- Materials Analysis Station, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yuichi Michiue
- Quantum Beam Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Keiji Kurashima
- Transmission Electron Microscopy Cluster, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takayoshi Sasaki
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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Yoshida Y, Kai K, Kageyama H, Saito G. Viscoelastic nanocomposite composed of titania nanosheets: multiple conductometric sensitivities. Dalton Trans 2011; 40:7291-4. [PMID: 21681324 DOI: 10.1039/c1dt10686d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Graft polymerization of trimethoxysilyl-containing ammonium cations on negatively-charged titania nanosheets gives a photoluminescent viscoelastic nanocomposite. Proton conduction network comprised of adsorbed water molecules near the titania slabs leads to the multiple conductometric sensitivities to temperature, humidity, and photo-irradiation.
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Affiliation(s)
- Yukihiro Yoshida
- Research Institute, Meijo University, Shiogamaguchi 1-501, Nagoya, 468-8502, Japan.
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46
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Takahashi M, Sendoh M, Kobayashi K, Tajima K. Preparation of TiO2 thin films using octadecylamine Langmuir-Blodgett films and evaluation of their photocatalytic activity. J Oleo Sci 2010; 60:25-9. [PMID: 21178314 DOI: 10.5650/jos.60.25] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A study was conducted to demonstrate that nanometer-thick titanium dioxide (TiO(2)) thin films could be prepared by the hydrolysis of titanium potassium oxalate using octadecylamine (ODA) Langmuir-Blodgett (LB) films as templates. The amount of TiO(2) generated in the LB film was found to be proportional to the number of deposited ODA layers, which enables precise control of the TiO(2) film thickness. After heat treatment of the LB films at 300-600°C, the photocatalytic activities of the resulting TiO(2) films were determined from the decomposition of stearic acid cast films when irradiated with UV light for different time periods. Higher photocatalytic activity was observed in TiO(2) films heat treated at lower temperatures.
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Affiliation(s)
- Masashi Takahashi
- Department of Chemistry and Energy Engineering, Tokyo City University, Tokyo, Japan.
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47
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Sato J, Kato H, Kimura M, Fukuda K, Sugimoto W. Conductivity of ruthenate nanosheets prepared via electrostatic self-assembly: characterization of isolated single nanosheet crystallite to mono- and multilayer electrodes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:18049-18054. [PMID: 21069961 DOI: 10.1021/la103848f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Ultrathin films composed of ruthenate nanosheets (RuO(2)ns) were fabricated via electrostatic self-assembly of unilamellar RuO(2)ns crystallites derived by total exfoliation of an ion-exchangeable layered ruthenate. Ultrathin films with submonolayer to monolayer RuO(2)ns coverage and multilayered RuO(2)ns thin films were prepared by controlled electrostatic self-assembly and layer-by-layer deposition using a cationic copolymer as the counterion. Electrical properties of a single RuO(2)ns crystallite were successfully measured by means of scanning probe microscopy. The sheet resistance of an isolated single RuO(2)ns crystallite was 12 kΩ sq(-1). Self-assembled submonolayer films behaved as a continuous conducting film for coverage above 70%, which was discussed based on a two-dimensional percolation model. Low sheet resistance was attained for multilayered films with values less than 1 kΩ sq(-1). Interestingly, the grain boundary resistance between nanosheets seems to contribute only slightly to the sheet resistance of self-assembled films.
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Affiliation(s)
- Jun Sato
- Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
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48
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Ma R, Sasaki T. Nanosheets of oxides and hydroxides: Ultimate 2D charge-bearing functional crystallites. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:5082-104. [PMID: 20925100 DOI: 10.1002/adma.201001722] [Citation(s) in RCA: 500] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
A wide variety of cation-exchangeable layered transition metal oxides and their relatively rare counterparts, anion-exchangeable layered hydroxides, have been exfoliated into individual host layers, i.e., nanosheets. Exfoliation is generally achieved via a high degree of swelling, typically driven either by intercalation of bulky organic ions (quaternary ammonium cations, propylammonium cations, etc.) for the layered oxides or by solvation with organic solvents (formamide, butanol, etc.) for the hydroxides. Ultimate two-dimensional (2D) anisotropy for the nanosheets, with thickness of around one nanometer versus lateral size ranging from submicrometer to several tens of micrometers, allows them to serve either as an ideal quantum system for fundamental study or as a basic building block for functional assembly. The charge-bearing inorganic macromolecule-like nanosheets can be assembled or organized through various solution-based processing techniques (e.g., flocculation, electrostatic sequential deposition, or the Langmuir-Blodgett method) to produce a range of nanocomposites, multilayer nanofilms, and core-shell nanoarchitectures, which have great potential for electronic, magnetic, optical, photochemical, and catalytic applications.
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Affiliation(s)
- Renzhi Ma
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
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Osada M, Akatsuka K, Ebina Y, Funakubo H, Ono K, Takada K, Sasaki T. Robust high-κ response in molecularly thin perovskite nanosheets. ACS NANO 2010; 4:5225-5232. [PMID: 20735075 DOI: 10.1021/nn101453v] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Size-induced suppression of permittivity in perovskite thin films is a fundamental problem that has remained unresolved for decades. This size-effect issue becomes increasingly important due to the integration of perovskite nanofilms into high-κ capacitors, as well as concerns that intrinsic size effects may limit their device performance. Here, we report a new approach to produce robust high-κ nanodielectrics using perovskite nanosheet (Ca2Nb3O10), a new class of nanomaterials that is derived from layered compounds by exfoliation. By a solution-based bottom-up approach using perovskite nanosheets, we have successfully fabricated multilayer nanofilms directly on SrRuO3 or Pt substrates without any interfacial dead layers. These nanofilms exhibit high dielectric constant (>200), the largest value seen so far in perovskite films with a thickness down to 10 nm. Furthermore, the superior high-κ properties are a size-effect-free characteristic with low leakage current density (<10(-7) A cm(-2)). Our work provides a key for understanding the size effect and also represents a step toward a bottom-up paradigm for future high-κ devices.
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Affiliation(s)
- Minoru Osada
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan.
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Yoon YS, Byeon SH, Lee IS. Unexplored thermal transformation behavior of two-dimensionally bound gadolinium hydroxide layers: fabrication of oriented crystalline films of gadolinium oxychloride nanosheets suitable for the multicolor luminescence with color tunability. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:3272-3276. [PMID: 20574952 DOI: 10.1002/adma.201000539] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Affiliation(s)
- Young-su Yoon
- Department of Applied Chemistry, Kyung Hee University, Gyeonggi-do, Korea
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