1
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Takaku Y, Higaki S, Hirota M, Kagi H. Radiocesium-bearing microparticles found in dry deposition fallout samples immediately after the Fukushima nuclear accident in the Kanto region, Japan. Sci Rep 2023; 13:21826. [PMID: 38071366 PMCID: PMC10710400 DOI: 10.1038/s41598-023-49158-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 12/05/2023] [Indexed: 12/18/2023] Open
Abstract
Radiocesium released by the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident still exists in the environment in two forms: adsorbed species on mineral particles in the soil and microparticles containing radiocesium mainly composed of silicate glass (CsMPs). CsMPs are dispersed not only around the FDNPP but also over a wide area of the Kanto region. The behavior and characteristics of CsMPs must be investigated to evaluate the impact of the FDNPP accident. Deposited particles including radiocesium were wiped from metal handrails on balconies and car hoods using tissue papers at six locations in the Kanto region (Tokai village, Ushiku City, Abiko City, Chiba City, Kawaguchi City, and Arakawa Ward) between March 15 and 21, 2011. CsMPs were isolated from the samples, and their characteristics were investigated. In total, 106 CsMPs derived from Unit 2 were successfully separated from 13 tissue paper samples. The radiation images of the two types of CsMPs discovered in Ushiku City demonstrate that CsMPs can easily become susceptible to fragmentation over time, even in the absence of weathering effects.
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Affiliation(s)
- Yuki Takaku
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
- Isotope Science Center, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo, 113-0032, Japan
| | - Shogo Higaki
- Isotope Science Center, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo, 113-0032, Japan.
| | - Masahiro Hirota
- Research Center for Supports to Advanced Sciences, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan
| | - Hiroyuki Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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2
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Kobayashi H, Komatsu K, Ito H, Machida S, Hattori T, Kagi H. Slightly Hydrogen-Ordered State of Ice IV Evidenced by In Situ Neutron Diffraction. J Phys Chem Lett 2023; 14:10664-10669. [PMID: 37988084 DOI: 10.1021/acs.jpclett.3c02563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Ice IV is a metastable high-pressure phase of ice in which the water molecules exhibit orientational disorder. Although orientational ordering is commonly observed for other ice phases, it has not been reported for ice IV. We conducted in situ powder neutron diffraction experiments for DCl-doped D2O ice IV to investigate its hydrogen ordering. We found abrupt changes in the temperature derivative of unit-cell volume, dV/dT, at ∼120 K, and revealed a slightly ordered structure at low temperatures based on the Rietveld method. The occupancy of the D1 site deviates from 0.5 in particular; it increased when samples were cooled at higher pressures and reached 0.174(14) at 2.38 GPa, 58 K. Our results evidence the presence of a low-symmetry hydrogen-ordered state corresponding to ice IV. It seems, however, difficult to experimentally access the completely ordered phase corresponding to ice IV by slow cooling at high pressure.
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Affiliation(s)
- Hiroki Kobayashi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kazuki Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hayate Ito
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shinichi Machida
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), 162-1 Shirakata, Tokai, Naka, Ibaraki 319-1106, Japan
| | - Takanori Hattori
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai, Naka, Ibaraki 319-1195, Japan
| | - Hiroyuki Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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3
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Yamashita K, Nakayama K, Komatsu K, Ohhara T, Munakata K, Hattori T, Sano-Furukawa A, Kagi H. The hydrogen-bond network in sodium chloride tridecahydrate: analogy with ice VI. Acta Crystallogr B Struct Sci Cryst Eng Mater 2023; 79:414-426. [PMID: 37703290 DOI: 10.1107/s2052520623007199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 08/16/2023] [Indexed: 09/15/2023]
Abstract
The structure of a recently found hyperhydrated form of sodium chloride (NaCl·13H2O and NaCl·13D2O) has been determined by in situ single-crystal neutron diffraction at 1.7 GPa and 298 K. It has large hydrogen-bond networks and some water molecules have distorted bonding features such as bifurcated hydrogen bonds and five-coordinated water molecules. The hydrogen-bond network has similarities to ice VI in terms of network topology and disordered hydrogen bonds. Assuming the equivalence of network components connected by pseudo-symmetries, the overall network structure of this hydrate can be expressed by breaking it down into smaller structural units which correspond to the ice VI network structure. This hydrogen-bond network contains orientational disorder of water molecules in contrast to the known salt hydrates. An example is presented here for further insights into a hydrogen-bond network containing ionic species.
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Affiliation(s)
- Keishiro Yamashita
- Geochemical Research Center, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kazuya Nakayama
- Geochemical Research Center, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kazuki Komatsu
- Geochemical Research Center, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Takashi Ohhara
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Ibaraki 319-1195, Japan
| | - Koji Munakata
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), IQBRC Building, 162-1 Shirakata, Tokai, Naka, Ibaraki 319-1106, Japan
| | - Takanori Hattori
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Ibaraki 319-1195, Japan
| | - Asami Sano-Furukawa
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Ibaraki 319-1195, Japan
| | - Hiroyuki Kagi
- Geochemical Research Center, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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4
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Yamashita K, Komatsu K, Kagi H. Crystal structure of potassium chloride monohydrate: water intercalation into the B1 structure of KCl under high pressure. Corrigendum. Acta Crystallogr C Struct Chem 2023; 79:68. [PMID: 36739612 PMCID: PMC9899514 DOI: 10.1107/s2053229623000669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 01/25/2023] [Indexed: 02/01/2023] Open
Abstract
In the paper by Yamashita et al. [Acta Cryst. (2022), C78, 749-754], an incorrect phrase is updated.
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Affiliation(s)
- Keishiro Yamashita
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan,Institute of Physical Chemistry, University of Innsbruck, Innrain 52c, Innsbruck, 6020, Austria,Correspondence e-mail:
| | - Kazuki Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroyuki Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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5
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Sugawara S, Fujiya W, Kagi H, Yamaguchi A, Hashizume K. Heat-Induced Dolomitization of Amorphous Calcium Magnesium Carbonate in a CO 2-Filled Closed System. ACS Omega 2022; 7:44670-44676. [PMID: 36530237 PMCID: PMC9753508 DOI: 10.1021/acsomega.2c03258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 11/09/2022] [Indexed: 06/17/2023]
Abstract
We report a method to synthesize dolomite [CaMg(CO3)2] from amorphous calcium magnesium carbonate (ACMC) via solid-state transformation. When ACMC is heated in air, it does not crystallize into dolomite but decomposes into Mg calcite, magnesium oxide, and CO2. Hence, we heated ACMC in a closed system filled with CO2 gas (pCO2 >1.2 bar at 420 °C) and produced submicron-sized dolomite. Single-phase dolomite was obtained after dissolving impurities in the run products, such as northupite [Na3Mg(CO3)2Cl] and eitelite [Na2Mg(CO3)2], in water. Also, we investigated the crystallization process of dolomite by changing the heating temperature and heating time. Despite crystallization by solid-state transformation, the heated samples crystallized to dolomite via Ca-rich protodolomite with no ordering reflection of X-ray diffraction as previously observed for hydrothermal synthesis. The results demonstrated that this crystallization pathway is kinetically favored even in solid-state transformation and that the Ca-rich protodolomite phase preferentially crystallizes during heating, leading to phase separation from the amorphous phase. Therefore, the crystallization process via protodolomite as a precursor is a common mechanism in dolomite crystallization, suggesting the presence of kinetic barriers other than hydration of cations.
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Affiliation(s)
- Shingo Sugawara
- Faculty
of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Wataru Fujiya
- Faculty
of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Hiroyuki Kagi
- Geochemical
Research Center, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033, Japan
| | - Akira Yamaguchi
- National
Institute of Polar Research, 10-3 Midori-cho, Tachikawa, Tokyo 190-8518, Japan
| | - Ko Hashizume
- Faculty
of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
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6
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Kiseeva ES, Korolev N, Koemets I, Zedgenizov DA, Unitt R, McCammon C, Aslandukova A, Khandarkhaeva S, Fedotenko T, Glazyrin K, Bessas D, Aprilis G, Chumakov AI, Kagi H, Dubrovinsky L. Subduction-related oxidation of the sublithospheric mantle evidenced by ferropericlase and magnesiowüstite diamond inclusions. Nat Commun 2022; 13:7517. [PMID: 36473837 PMCID: PMC9726884 DOI: 10.1038/s41467-022-35110-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 11/18/2022] [Indexed: 12/12/2022] Open
Abstract
Ferropericlase (Mg,Fe)O is the second most abundant mineral in Earth's lower mantle and a common inclusion found in subcratonic diamonds. Pyrolitic mantle has Mg# (100 × Mg/(Mg+Fe)) ~89. However, ferropericlase inclusions in diamonds show a broad range of Mg# between 12 and 93. Here we use Synchrotron Mössbauer Source (SMS) spectroscopy and single-crystal X-ray diffraction to determine the iron oxidation state and structure of two magnesiowüstite and three ferropericlase inclusions in diamonds from São Luiz, Brazil. Inclusion Mg#s vary between 16.1 and 84.5. Ferropericlase inclusions contain no ferric iron within the detection limit of SMS, while both magnesiowüstite inclusions show the presence of monocrystalline magnesioferrite ((Mg,Fe)Fe3+2O4) with an estimated 47-53 wt% Fe2O3. We argue that the wide range of Fe concentrations observed in (Mg,Fe)O inclusions in diamonds and the appearance of magnesioferrite result from oxidation of ferropericlase triggered by the introduction of subducted material into sublithospheric mantle.
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Affiliation(s)
- Ekaterina S. Kiseeva
- grid.7872.a0000000123318773School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland
| | - Nester Korolev
- grid.465386.a0000 0004 0562 7224Institute of Precambrian Geology and Geochronology of the Russian Academy of Sciences, nab. Makarova 2, St. Petersburg, 199034 Russia
| | - Iuliia Koemets
- grid.7384.80000 0004 0467 6972Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany
| | - Dmitry A. Zedgenizov
- grid.473268.c0000 0001 0221 8044A.N. Zavaritsky Institute of Geology and Geochemistry, 15 Vonsovskogo street, Ekaterinburg, 620016 Russia ,grid.446243.30000 0004 0646 288XUral State Mining University, 30 Kuibysheva street, Ekaterinburg, 620014 Russia
| | - Richard Unitt
- grid.7872.a0000000123318773School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland
| | - Catherine McCammon
- grid.7384.80000 0004 0467 6972Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany
| | - Alena Aslandukova
- grid.7384.80000 0004 0467 6972Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany
| | - Saiana Khandarkhaeva
- grid.7384.80000 0004 0467 6972Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany
| | - Timofey Fedotenko
- grid.7384.80000 0004 0467 6972Materials Physics and Technology at Extreme Conditions, Laboratory of Crystallography, Universität Bayreuth, D-95440 Bayreuth, Germany ,grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Konstantin Glazyrin
- grid.7683.a0000 0004 0492 0453Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Dimitrios Bessas
- grid.5398.70000 0004 0641 6373ESRF-The European Synchrotron, CS 40220, 38043 Grenoble, Cedex 9 France
| | - Georgios Aprilis
- grid.5398.70000 0004 0641 6373ESRF-The European Synchrotron, CS 40220, 38043 Grenoble, Cedex 9 France
| | - Alexandr I. Chumakov
- grid.5398.70000 0004 0641 6373ESRF-The European Synchrotron, CS 40220, 38043 Grenoble, Cedex 9 France
| | - Hiroyuki Kagi
- grid.26999.3d0000 0001 2151 536XGeochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033 Japan
| | - Leonid Dubrovinsky
- grid.7384.80000 0004 0467 6972Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany
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7
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Yamashita K, Komatsu K, Kagi H. Crystal structure of potassium chloride monohydrate: water intercalation into the B1 structure of KCl under high pressure. Acta Crystallogr C 2022; 78:749-754. [PMID: 36468558 PMCID: PMC9720884 DOI: 10.1107/s2053229622011135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 11/21/2022] [Indexed: 11/27/2022] Open
Abstract
A new hydrate form of potassium chloride, KCl·H2O, is identified for the first time by in situ single-crystal X-ray diffraction under high pressure. It has a monoclinic structure with lattice parameters of a = 5.687 (7), b = 6.3969 (3), c = 8.447 (3) Å and β = 107.08 (8)° at 2.23 (4) GPa and 295 K. The structure of this hydrate has K-Cl alignments similar to the B1 phase of anhydrous KCl, while water molecules intercalate among the ionic species. The coordination structures of the K and Cl atoms can be regarded as the intermediate states between the B1 and B2 phases of KCl. This finding provides a perspective on the structural interpretation of multicomponent materials and an additional candidate for bound water in salt-water systems under high pressure, such as inside of icy bodies.
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Affiliation(s)
- Keishiro Yamashita
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan,Institute of Physical Chemistry, University of Innsbruck, Innrain 52c, Innsbruck, 6020, Austria,Correspondence e-mail:
| | - Kazuki Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroyuki Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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8
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Yamashita K, Komatsu K, Ohhara T, Munakata K, Irifune T, Shinmei T, Sugiyama K, Kawamata T, Kagi H. In situ single-crystal neutron diffraction of a high-pressure phase of sodium chloride hydrate. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322091288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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9
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Zhao Z, Kagi H, Komatsu K, Yamashita K, Nakano S. Pressure-induced phase transitions of cobalt sulfate hydrates and discovery of a new high-pressure phase, CoSO4·5H2O. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.122904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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10
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He X, Kagi H, Komatsu K, Nakano S. Compressibility and blue-shifting O–H stretching bands of magnesium hydroxyfluoride Mg(OH)F up to 20 GPa. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Yamashita K, Komatsu K, Klotz S, Fabero O, Fernández-Díaz MT, Abe J, Machida S, Hattori T, Irifune T, Shinmei T, Sugiyama K, Kawamata T, Kagi H. Reinvestigation of site disorder in dense ice by in situ neutron diffraction techniques. Acta Crystallogr A Found Adv 2021. [DOI: 10.1107/s010876732108497x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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12
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Sun Y, Fujimoto C, Kagi H. Pressure-induced Esterification Reaction between Phosphoric Acid and Methanol. CHEM LETT 2020. [DOI: 10.1246/cl.200289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuchen Sun
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo, Tokyo 113-0033, Japan
| | - Chikako Fujimoto
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo, Tokyo 113-0033, Japan
| | - Hiroyuki Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo, Tokyo 113-0033, Japan
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13
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Fukuyama K, Kagi H, Inoue T, Kakizawa S, Shinmei T, Hishita S, Takahata N, Sano Y. High nitrogen solubility in stishovite (SiO 2) under lower mantle conditions. Sci Rep 2020; 10:10897. [PMID: 32616729 PMCID: PMC7331719 DOI: 10.1038/s41598-020-67621-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 06/05/2020] [Indexed: 11/09/2022] Open
Abstract
Nitrogen is a crucial volatile element in the early Earth's evolution and the origin of life. Despite its importance, nitrogen's behavior in the Earth's interior remains poorly understood. Compared to other volatile elements, nitrogen is depleted in the Earth's atmosphere (the so-called "missing nitrogen"), calling for a hidden deep reservoir. To investigate nitrogen's behavior in the deep Earth including how the reservoir formed, high-pressure and high-temperature experiments were conducted at 28 GPa and 1,400-1,700 °C. To reproduce the conditions in the lower mantle, the redox was controlled using a Fe-FeO buffer. We observed that depending on the temperature conditions, stishovite can incorporate up to 90-404 ppm nitrogen, experimentally demonstrating that stishovite has the highest nitrogen solubility among the deep mantle minerals. Stishovite is the main mineral component of subducted nitrogen-rich sedimentary rocks and eroded continental crust that are eventually transported down to the lower mantle. Our results suggest that nitrogen could have been continuously transported into the lower mantle via subduction, ever since plate tectonics began.
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Affiliation(s)
- Ko Fukuyama
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo, Tokyo, 113-0033, Japan.
| | - Hiroyuki Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo, Tokyo, 113-0033, Japan.
| | - Toru Inoue
- Department of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
- Geodynamics Research Center, Ehime University, Matsuyama, Ehime, 790-8577, Japan
| | - Sho Kakizawa
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo, Tokyo, 113-0033, Japan
- Department of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
| | - Toru Shinmei
- Geodynamics Research Center, Ehime University, Matsuyama, Ehime, 790-8577, Japan
| | - Shunichi Hishita
- Research and Services Division of Materials Data and Integrated System, National Institute for Materials Science, Tsukuba, Ibaraki, 305-0047, Japan
| | - Naoto Takahata
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba, 277-8564, Japan
| | - Yuji Sano
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba, 277-8564, Japan
- Institute of Surface-Earth System Science, Tianjin University, Tianjin, 300072, People's Republic of China
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14
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Suzuki Y, Yamashita S, Kouduka M, Ao Y, Mukai H, Mitsunobu S, Kagi H, D'Hondt S, Inagaki F, Morono Y, Hoshino T, Tomioka N, Ito M. Deep microbial proliferation at the basalt interface in 33.5-104 million-year-old oceanic crust. Commun Biol 2020; 3:136. [PMID: 32242062 PMCID: PMC7118141 DOI: 10.1038/s42003-020-0860-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 02/27/2020] [Indexed: 11/09/2022] Open
Abstract
The upper oceanic crust is mainly composed of basaltic lava that constitutes one of the largest habitable zones on Earth. However, the nature of deep microbial life in oceanic crust remains poorly understood, especially where old cold basaltic rock interacts with seawater beneath sediment. Here we show that microbial cells are densely concentrated in Fe-rich smectite on fracture surfaces and veins in 33.5- and 104-million-year-old (Ma) subseafloor basaltic rock. The Fe-rich smectite is locally enriched in organic carbon. Nanoscale solid characterizations reveal the organic carbon to be microbial cells within the Fe-rich smectite, with cell densities locally exceeding 1010 cells/cm3. Dominance of heterotrophic bacteria indicated by analyses of DNA sequences and lipids supports the importance of organic matter as carbon and energy sources in subseafloor basalt. Given the prominence of basaltic lava on Earth and Mars, microbial life could be habitable where subsurface basaltic rocks interact with liquid water.
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Affiliation(s)
- Yohey Suzuki
- Department of Earth and Planetary Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
| | - Seiya Yamashita
- Department of Earth and Planetary Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Mariko Kouduka
- Department of Earth and Planetary Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Yutaro Ao
- Department of Earth and Planetary Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Hiroki Mukai
- Department of Earth and Planetary Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.,Mantle Drilling Promotion Office, Institue for Marine-Earth Exploration and Engineering, JAMSTEC, Showa-machi 3173-25, Kanazawa-ku, Yokohama, 236-0001, Japan
| | - Satoshi Mitsunobu
- Department of Environmental Conservation, Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime, 790-8566, Japan
| | - Hiroyuki Kagi
- Geochemical Research Center, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo, 113-0033, Japan
| | - Steven D'Hondt
- Graduate School of Oceanography, University of Rhode Island, 215 South Ferry Road, Narragansett, RI, 02882, USA
| | - Fumio Inagaki
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Monobe B200, Nankoku, Kochi, 783-8502, Japan.,Mantle Drilling Promotion Office, Institue for Marine-Earth Exploration and Engineering, JAMSTEC, Showa-machi 3173-25, Kanazawa-ku, Yokohama, 236-0001, Japan
| | - Yuki Morono
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Monobe B200, Nankoku, Kochi, 783-8502, Japan
| | - Tatsuhiko Hoshino
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Monobe B200, Nankoku, Kochi, 783-8502, Japan
| | - Naotaka Tomioka
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Monobe B200, Nankoku, Kochi, 783-8502, Japan
| | - Motoo Ito
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Monobe B200, Nankoku, Kochi, 783-8502, Japan
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15
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Iizuka-Oku R, Gui W, Komatsu K, Yagi T, Kagi H. High-pressure responses of alkali metal hydrogen carbonates, RbHCO3 and CsHCO3: Findings of new phases and unique compressional behavior. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2019.121139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Watanabe N, Morimatsu M, Fujita A, Teranishi M, Sudevan S, Watanabe M, Iwasa H, Hata Y, Kagi H, Nishiyama M, Naruse K, Higashitani A. Increased hydrostatic pressure induces nuclear translocation of DAF-16/FOXO in C. elegans. Biochem Biophys Res Commun 2020; 523:853-858. [PMID: 31954516 DOI: 10.1016/j.bbrc.2020.01.047] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 01/07/2020] [Indexed: 12/18/2022]
Abstract
Mechanical stimulation is well known to be important for maintaining tissue and organ homeostasis. Here, we found that hydrostatic pressure induced nuclear translocation of a forkhead box O (FOXO) transcription factor DAF-16, in C. elegans within minutes, whereas the removal of this pressure resulted in immediate export of DAF-16 to the cytoplasm. We also monitored DAF-16-dependent transcriptional changes by exposure to 1 MPa pressure for 5 min, and found significant changes in collagen and other genes in a DAF-16 dependent manner. Lifespan was markedly prolonged with exposure to cyclic pressure treatment (1 MPa once a day for 5 min from L1 larvae until death). Furthermore, age-dependent decline in locomotor activity was suppressed by the treatment. In contrast, the nuclear translocation of the yes-associated protein YAP-1 was not induced under the same pressure conditions. Thus, moderate hydrostatic pressure improves ageing progression through activation of DAF-16/FOXO in C. elegans.
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Affiliation(s)
- Naoshi Watanabe
- Graduate School of Life Sciences, Tohoku University, Sendai, 980-8577, Japan; Faculty of Education, Miyagi University of Education, Sendai, 980-0845, Japan.
| | - Masatoshi Morimatsu
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama, 700-8558, Japan.
| | - Ayano Fujita
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama, 700-8558, Japan
| | - Mika Teranishi
- Graduate School of Life Sciences, Tohoku University, Sendai, 980-8577, Japan
| | - Surabhi Sudevan
- Graduate School of Life Sciences, Tohoku University, Sendai, 980-8577, Japan
| | - Masaru Watanabe
- Graduate School of Environmental Studies, Tohoku University, Sendai, 980-8579, Japan; Research Center of Supercritical Fluid Technology, Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan
| | - Hiroaki Iwasa
- Department of Medical Biochemistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8519, Japan
| | - Yutaka Hata
- Department of Medical Biochemistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8519, Japan
| | - Hiroyuki Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Masayoshi Nishiyama
- Faculty of Science and Engineering, Kindai University, Osaka, 577-8502, Japan
| | - Keiji Naruse
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama, 700-8558, Japan.
| | - Atsushi Higashitani
- Graduate School of Life Sciences, Tohoku University, Sendai, 980-8577, Japan.
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17
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Shinozaki A, Nagai T, Kagi H, Nakano S. Pressure-induced irreversible amorphization of naphthalene and nitrogen-containing heteroaromatic compounds at room temperature. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2019.136921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Yamashita K, Komatsu K, Hattori T, Machida S, Kagi H. Crystal structure of a high-pressure phase of magnesium chloride hexahydrate determined by in-situ X-ray and neutron diffraction methods. Acta Crystallogr C Struct Chem 2019; 75:1605-1612. [PMID: 31802749 DOI: 10.1107/s2053229619014670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Accepted: 10/29/2019] [Indexed: 11/10/2022]
Abstract
A high-pressure phase of magnesium chloride hexahydrate (MgCl2·6H2O-II) and its deuterated counterpart (MgCl2·6D2O-II) have been identified for the first time by in-situ single-crystal X-ray and powder neutron diffraction. The crystal structure was analyzed by the Rietveld method for the neutron diffraction pattern based on the initial structure determined by single-crystal X-ray diffraction. This high-pressure phase has a similar framework to that in the known ambient-pressure phase, but exhibits some structural changes with symmetry reduction caused by a subtle modification in the hydrogen-bond network around the Mg(H2O)6 octahedra. These structural features reflect the strain in the high-pressure phases of MgCl2 hydrates.
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Affiliation(s)
- Keishiro Yamashita
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kazuki Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Takanori Hattori
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Ibaraki 319-1195, Japan
| | - Shinichi Machida
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society, IQBRC Bldg, 162-1 Shirakata, Tokai, Naka, Ibaraki 319-1106, Japan
| | - Hiroyuki Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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19
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Dissanayake SE, Matsuda M, Munakata K, Kagi H, Gouchi J, Uwatoko Y. Development of cubic anvil type high pressure apparatus for neutron diffraction. J Phys Condens Matter 2019; 31:384001. [PMID: 31158819 DOI: 10.1088/1361-648x/ab2688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
High-pressure neutron diffraction (HPND) experiments in extended pressure and temperature ranges can provide invaluable information for understanding many pressure-induced emergent phenomena, such as unusual phase transitions and quantum critical behavior involving spin, orbital, charge and structural degrees of freedom, in strongly correlated materials. Many apparatuses for different purposes of HPND experiments have been developed in several laboratories. Recently, a clamp-type cubic anvil high pressure cell that can generate pressure over 7 GPa at 3 K was developed for low-temperature HPND measurements. In this paper, characteristics of the clamp-type cubic anvil high pressure cell are presented and its performances are demonstrated by measuring magnetic neutron scattering under pressure on MnP single crystal samples.
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Affiliation(s)
- S E Dissanayake
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States of America
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20
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Shimizu K, Kimura K, Isowa Y, Oshima K, Ishikawa M, Kagi H, Kito K, Hattori M, Chiba S, Endo K. Insights into the Evolution of Shells and Love Darts of Land Snails Revealed from Their Matrix Proteins. Genome Biol Evol 2019; 11:380-397. [PMID: 30388206 PMCID: PMC6368272 DOI: 10.1093/gbe/evy242] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/31/2018] [Indexed: 12/14/2022] Open
Abstract
Over the past decade, many skeletal matrix proteins that are possibly related to calcification have been reported in various calcifying animals. Molluscs are among the most diverse calcifying animals and some gastropods have adapted to terrestrial ecological niches. Although many shell matrix proteins (SMPs) have already been reported in molluscs, most reports have focused on marine molluscs, and the SMPs of terrestrial snails remain unclear. In addition, some terrestrial stylommatophoran snails have evolved an additional unique calcified character, called a “love dart,” used for mating behavior. We identified 54 SMPs in the terrestrial snail Euhadra quaesita, and found that they contain specific domains that are widely conserved in molluscan SMPs. However, our results also suggest that some of them possibly have evolved independently by domain shuffling, domain recruitment, or gene co-option. We then identified four dart matrix proteins, and found that two of them are the same proteins as those identified as SMPs. Our results suggest that some dart matrix proteins possibly have evolved by independent gene co-option from SMPs during dart evolution events. These results provide a new perspective on the evolution of SMPs and “love darts” in land snails.
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Affiliation(s)
- Keisuke Shimizu
- Department of Earth and Planetary Science, The University of Tokyo, Hongo, Japan.,College of Life and Environmental Sciences, University of Exeter, United Kingdom
| | - Kazuki Kimura
- Department of Environmental Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, Japan.,Research Institute for Ulleungdo and Dokdo Islands, Kyungpook National University, Bukgu, Daegu, Korea
| | - Yukinobu Isowa
- Organization for the Strategic Coordination of Research and Intellectual Properties, Meiji University, Kawasaki, Kanagawa, Japan
| | - Kenshiro Oshima
- Center for Omics and Bioinformatics, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
| | - Makiko Ishikawa
- Department of Earth and Planetary Science, The University of Tokyo, Hongo, Japan.,Faculty of Animal Health Technology, Yamazaki University of Animal Health Technology, Hachioji, Tokyo, Japan
| | - Hiroyuki Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo, Japan
| | - Keiji Kito
- Department of Life Sciences, School of Agriculture, Meiji University, Kawasaki, Kanagawa, Japan
| | - Masahira Hattori
- Center for Omics and Bioinformatics, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan.,Cooperative Major of Advanced Health Science, Graduate School of Advanced Science and Engineering, Waseda University, Japan
| | - Satoshi Chiba
- Department of Environmental Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Kazuyoshi Endo
- Department of Earth and Planetary Science, The University of Tokyo, Hongo, Japan
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21
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Ishii Y, Komatsu K, Nakano S, Machida S, Hattori T, Sano-Furukawa A, Kagi H. Pressure-induced stacking disorder in boehmite. Phys Chem Chem Phys 2018; 20:16650-16656. [PMID: 29873355 DOI: 10.1039/c8cp02565g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structure of an aluminum layered hydroxide, boehmite (γ-AlOOH), as a function of pressure was studied by using in situ synchrotron X-ray and neutron diffraction. Peak broadening, which is only found for hkl (h ≠ 0) peaks in the X-ray diffraction patterns, is explained by stacking disorder accompanying a continuously increasing displacement of the AlO6 octahedral layer along the a-axis. This finding could be the first experimental result for pressure-induced stacking disorder driven by continuous layer displacement. The magnitude of the layer displacement was estimated from the X-ray scattering profile calculation based on the stacking disordered structure model. Hydrogen bond geometries of boehmite, obtained by structure refinements of the observed neutron diffraction patterns for the deuterated sample up to 10 GPa, show linearly approaching O-D covalent and DO hydrogen bond distances and they merge below 26 GPa. Pressure-induced stacking disorder makes the electrostatic potential of hydrogen bonds asymmetric, yielding less chance for proton-tunnelling.
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Affiliation(s)
- Y Ishii
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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22
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Shinozaki A, Komatsu K, Kagi H, Fujimoto C, Machida S, Sano-Furukawa A, Hattori T. Behavior of intermolecular interactions in α-glycine under high pressure. J Chem Phys 2018; 148:044507. [PMID: 29390805 DOI: 10.1063/1.5009980] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Pressure-response on the crystal structure of deuterated α-glycine was investigated at room temperature, using powder and single-crystal X-ray diffraction, and powder neutron diffraction measurements under high pressure. No phase change was observed up to 8.7 GPa, although anisotropy of the lattice compressibility was found. No significant changes in the compressibility and the intramolecular distance between non-deuterated α-glycine and deuterated α-glycine were observed. Neutron diffraction measurements indicated the distance of the intermolecular D⋯O bond along with the c-axis increased with compression up to 6.4 GPa. The distance of another D⋯O bond along with the a-axis decreased with increasing pressure and became the shortest intermolecular hydrogen bond above 3 GPa. In contrast, the lengths of the bifurcated N-D⋯O and C-D⋯O hydrogen bonds, which are formed between the layers of the α-glycine molecules along the b-axis, decreased significantly with increasing pressure. The decrease of the intermolecular distances resulted in the largest compressibility of the b-axis, compared to the other two axes. The Hirshfeld analysis suggested that the reduction of the void region size, rather than shrinkage of the strong N-D⋯O hydrogen bonds, occurred with compression.
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Affiliation(s)
- Ayako Shinozaki
- Faculty of Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan
| | - Kazuki Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo, Tokyo 113-0033, Japan
| | - Hiroyuki Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo, Tokyo 113-0033, Japan
| | - Chikako Fujimoto
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo, Tokyo 113-0033, Japan
| | - Shinichi Machida
- CROSS, Neutron Science and Technology Center, IQBRC Building, 162-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - Asami Sano-Furukawa
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai, Ibaraki 319-1195, Japan
| | - Takanori Hattori
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai, Ibaraki 319-1195, Japan
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23
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Suzuki T, Okada H, Nakagawa T, Komatsu K, Fujimoto C, Kagi H, Matsuo Y. A fluorenylidene-acridane that becomes dark in color upon grinding - ground state mechanochromism by conformational change. Chem Sci 2017; 9:475-482. [PMID: 29619203 PMCID: PMC5868075 DOI: 10.1039/c7sc03567e] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 10/24/2017] [Indexed: 12/23/2022] Open
Abstract
We report mechanochromic color change controlled by conformational change (folded and twisted conformers) of fluorenylidene-acridanes (FAs).
We report mechanochromic color change controlled by conformational change (between folded and twisted conformers) of fluorenylidene-acridanes (FAs). FAs with four N-alkyl groups (methyl, ethyl, n-butyl and n-octyl) were synthesized via the Barton–Kellogg reaction of diazofluorene and electrophilic N-tert-butoxy carbonyl thioacridone, deprotection of the tert-butoxy carbonyl group gives fluorenylacridine, and alkylation on the nitrogen atom is done using alkyl tosylate or triflate. FAs were characterized by NMR, UV-vis absorption and photoluminescence spectroscopy, theoretical calculation, cyclic voltammetry, and powder and single-crystal X-ray analyses. The color and folded/twisted conformation of the FAs were changed by the choice of substituent on the nitrogen atom, physical state (solution or solid), and morphology (crystalline or amorphous). Grinding of N-methyl FA solids, using an agate mortar, caused the morphology to change from a crystalline to amorphous state, which induced a conformational change from the folded to the twisted conformer, and a mechanochromic color change from yellow to dark green. The reverse color change, along with a morphological and conformational change to the folded conformer, was performed by solvent vapor exposure (chloroform). The twisted and folded conformers showed ambipolar (hole/electron) and hole-only transport properties, respectively.
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Affiliation(s)
- Tsuyoshi Suzuki
- Department of Chemistry , School of Science , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
| | - Hiroshi Okada
- Department of Mechanical Engineering , School of Engineering , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-8565 , Japan .
| | - Takafumi Nakagawa
- Department of Mechanical Engineering , School of Engineering , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-8565 , Japan .
| | - Kazuki Komatsu
- Geochemical Research Center , Graduate School of Science , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
| | - Chikako Fujimoto
- Geochemical Research Center , Graduate School of Science , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
| | - Hiroyuki Kagi
- Geochemical Research Center , Graduate School of Science , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
| | - Yutaka Matsuo
- Department of Mechanical Engineering , School of Engineering , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-8565 , Japan . .,Hefei National Laboratory for Physical Science at the Microscale , University of Science and Technology of China , Hefei , Anhui 230026 , China
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24
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Yamane R, Komatsu K, Kagi H. Note: Development of a new Bridgman-type high pressure cell for accurate dielectric measurements. Rev Sci Instrum 2017; 88:046104. [PMID: 28456229 DOI: 10.1063/1.4980154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We developed a new high pressure cell which allows us to perform accurate dielectric measurements above 3 GPa. The developed cell is based on Bridgman type opposed anvil cells with electrodes immersed into holes in the anvils in order to make the electrode area constant under compression. As a feasibility experiment, dielectric measurements for H2O were conducted up to 6.6 GPa and obtained dielectric constants are well consistent with previous studies.
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Affiliation(s)
- R Yamane
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - K Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - H Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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25
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Takahashi S, Kagi H, Fujimoto C, Shinozaki A, Gotou H, Nishida T, Mimura K. Pressure-induced Freeze Concentration of Alanine Aqueous Solution as a Novel Field of Chemical Reaction. CHEM LETT 2017. [DOI: 10.1246/cl.160992] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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26
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Klotz S, Komatsu K, Pietrucci F, Kagi H, Ludl AA, Machida S, Hattori T, Sano-Furukawa A, Bove LE. Ice VII from aqueous salt solutions: From a glass to a crystal with broken H-bonds. Sci Rep 2016; 6:32040. [PMID: 27562476 PMCID: PMC5000010 DOI: 10.1038/srep32040] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 07/26/2016] [Indexed: 11/16/2022] Open
Abstract
It has been known for decades that certain aqueous salt solutions of LiCl and LiBr readily form glasses when cooled to below ≈160 K. This fact has recently been exploited to produce a « salty » high-pressure ice form: When the glass is compressed at low temperatures to pressures higher than 4 GPa and subsequently warmed, it crystallizes into ice VII with the ionic species trapped inside the ice lattice. Here we report the extreme limit of salt incorporation into ice VII, using high pressure neutron diffraction and molecular dynamics simulations. We show that high-pressure crystallisation of aqueous solutions of LiCl∙RH2O and LiBr∙RH2O with R = 5.6 leads to solids with strongly expanded volume, a destruction of the hydrogen-bond network with an isotropic distribution of water-dipole moments, as well as a crystal-to-amorphous transition on decompression. This highly unusual behaviour constitutes an interesting pathway from a glass to a crystal where translational periodicity is restored but the rotational degrees of freedom remaining completely random.
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Affiliation(s)
- S Klotz
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, CNRS UMR 7590, Université Pierre-et-Marie-Curie, F-75252 Paris, France
| | - K Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - F Pietrucci
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, CNRS UMR 7590, Université Pierre-et-Marie-Curie, F-75252 Paris, France
| | - H Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - A-A Ludl
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, CNRS UMR 7590, Université Pierre-et-Marie-Curie, F-75252 Paris, France
| | - S Machida
- CROSS-Tokai, Research Centre for Neutron Science and Technology, 162-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - T Hattori
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki 319-1195, Japan
| | - A Sano-Furukawa
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki 319-1195, Japan
| | - L E Bove
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, CNRS UMR 7590, Université Pierre-et-Marie-Curie, F-75252 Paris, France.,Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
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27
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Komatsu K, Noritake F, Machida S, Sano-Furukawa A, Hattori T, Yamane R, Kagi H. Partially ordered state of ice XV. Sci Rep 2016; 6:28920. [PMID: 27375120 PMCID: PMC4931510 DOI: 10.1038/srep28920] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 06/13/2016] [Indexed: 11/24/2022] Open
Abstract
Most ice polymorphs have order–disorder “pairs” in terms of hydrogen positions, which contributes to the rich variety of ice polymorphs; in fact, three recently discovered polymorphs— ices XIII, XIV, and XV—are ordered counter forms to already identified disordered phases. Despite the considerable effort to understand order–disorder transition in ice crystals, there is an inconsistency among the various experiments and calculations for ice XV, the ordered counter form of ice VI, i.e., neutron diffraction observations suggest antiferroelectrically ordered structures, which disagree with dielectric measurement and theoretical studies, implying ferroelectrically ordered structures. Here we investigate in-situ neutron diffraction measurements and density functional theory calculations to revisit the structure and stability of ice XV. We find that none of the completely ordered configurations are particular favored; instead, partially ordered states are established as a mixture of ordered domains in disordered ice VI. This scenario in which several kinds of ordered configuration coexist dispels the contradictions in previous studies. It means that the order–disorder pairs in ice polymorphs are not one-to-one correspondent pairs but rather have one-to-n correspondence, where there are n possible configurations at finite temperature.
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Affiliation(s)
- K Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - F Noritake
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - S Machida
- CROSS-Tokai, Research Center for Neutron Science and Technology, IQBRC Bldg, 162-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - A Sano-Furukawa
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Ibaraki 319-1195, Japan
| | - T Hattori
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Ibaraki 319-1195, Japan
| | - R Yamane
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - H Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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28
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Maruyama K, Kagi H, Inoue T, Ohfuji H, Yoshino T. In Situ Observation of Pressure-induced Crystallization from Amorphous Calcium Carbonate by Time-resolved X-ray Diffraction. CHEM LETT 2015. [DOI: 10.1246/cl.141062] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Koji Maruyama
- Geochemical Research Center, Graduate School of Science, The University of Tokyo
| | - Hiroyuki Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo
| | - Toru Inoue
- Geodynamics Research Center, Ehime University
| | | | - Toru Yoshino
- Tokyo Metropolitan Industrial Technology Research Institute
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Komatsu K, Shinozaki A, Machida S, Matsubayashi T, Watanabe M, Kagi H, Sano-Furukawa A, Hattori T. Crystal structure of magnesium dichloride decahydrate determined by X-ray and neutron diffraction under high pressure. Acta Crystallogr B Struct Sci Cryst Eng Mater 2015; 71:74-80. [PMID: 25643718 DOI: 10.1107/s205252061500027x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 01/07/2015] [Indexed: 06/04/2023]
Abstract
Magnesium dichloride decahydrate (MgCl2·10H2O) and its deuterated counterpart (MgCl2·10D2O) are identified for the first time by in-situ powder synchrotron X-ray and spallation neutron diffraction. These substances are crystallized from a previously unidentified nanocrystalline compound, which originates from an amorphous state at low temperature. A combination of a recently developed autoindexing procedure and the charge-flipping method reveals that the crystal structure of MgCl2·10H2O consists of an ABCABC··· sequence of Mg(H2O)6 octahedra. The Cl(-) anions and remaining water molecules unconnected to the Mg(2+) cations bind the octahedra, similar to other water-rich magnesium dichloride hydrates. The D positions in MgCl2·10D2O, determined by the difference Fourier methods using the neutron powder diffraction patterns at 2.5 GPa, show the features such as bifurcated hydrogen bonds and tetrahedrally coordinated O atoms, which were not found in other forms of magnesium chloride hydrates.
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Affiliation(s)
- Kazuki Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ayako Shinozaki
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shinichi Machida
- Comprehensive Research Organization for Science and Society, IQBRC Bldg, 162-1 Shirakata, Tokai, Naka, Ibaraki 319-1106, Japan
| | - Takuto Matsubayashi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Mao Watanabe
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroyuki Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Asami Sano-Furukawa
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai-mura, Ibaraki 319-1195, Japan
| | - Takanori Hattori
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai-mura, Ibaraki 319-1195, Japan
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Abstract
Pressure-induced oligomerization of alanine was found from high-pressure experiments.
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Affiliation(s)
- Chikako Fujimoto
- Geochemical Research Center
- Graduate School of Science
- The University of Tokyo
- Hongo
- Japan
| | - Ayako Shinozaki
- Geochemical Research Center
- Graduate School of Science
- The University of Tokyo
- Hongo
- Japan
| | - Koichi Mimura
- Department of Earth and Planetary Sciences
- Graduate School of Environmental Studies
- Nagoya University
- Nagoya 464-8601
- Japan
| | - Tamihito Nishida
- Division of Earth and Environmental Sciences
- Graduate School of Environmental Studies
- Nagoya University
- Nagoya 464-8601
- Japan
| | - Hirotada Gotou
- Institute for Solid State Physics
- The University of Tokyo
- Kashiwa
- Japan
| | - Kazuki Komatsu
- Geochemical Research Center
- Graduate School of Science
- The University of Tokyo
- Hongo
- Japan
| | - Hiroyuki Kagi
- Geochemical Research Center
- Graduate School of Science
- The University of Tokyo
- Hongo
- Japan
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31
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Noguchi N, Komatsu K, Shinozaki A, Shinoda K, Kagi H. Near-infrared spectra of H2O under high pressure and high temperature: implications for a transition from proton tunneling to hopping states. Spectrochim Acta A Mol Biomol Spectrosc 2014; 133:509-513. [PMID: 24975636 DOI: 10.1016/j.saa.2014.06.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 05/24/2014] [Accepted: 06/03/2014] [Indexed: 06/03/2023]
Abstract
The nature of protons in ice VII up to 368°C and 16GPa was investigated with synchrotron near-infrared spectroscopy. The absorption band of the first OH stretching overtone mode divided into doublet peaks above 5GPa at room temperature, suggesting that proton tunneling occurs at the overtone level. As the temperature increased, the doublet peaks gradually reduced to a singlet. This result implies that thermally activated protons hop between the two potential minima along the oxygen-oxygen axis. A pressure-temperature diagram for the proton state was constructed from the changing band shape of the overtone mode.
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Affiliation(s)
- Naoki Noguchi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Kazuki Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ayako Shinozaki
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Keiji Shinoda
- Department of Geosciences, Graduate School of Science, Osaka City University, Sugimoto 3-3-138, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Hiroyuki Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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32
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Sano-Furukawa A, Hattori T, Arima H, Yamada A, Tabata S, Kondo M, Nakamura A, Kagi H, Yagi T. Six-axis multi-anvil press for high-pressure, high-temperature neutron diffraction experiments. Rev Sci Instrum 2014; 85:113905. [PMID: 25430122 DOI: 10.1063/1.4901095] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We developed a six-axis multi-anvil press, ATSUHIME, for high-pressure and high-temperature in situ time-of-flight neutron powder diffraction experiments. The press has six orthogonally oriented hydraulic rams that operate individually to compress a cubic sample assembly. Experiments indicate that the press can generate pressures up to 9.3 GPa and temperatures up to 2000 K using a 6-6-type cell assembly, with available sample volume of about 50 mm(3). Using a 6-8-type cell assembly, the available conditions expand to 16 GPa and 1273 K. Because the six-axis press has no guide blocks, there is sufficient space around the sample to use the aperture for diffraction and place an incident slit, radial collimators, and a neutron imaging camera close to the sample. Combination of the six-axis press and the collimation devices realized high-quality diffraction pattern with no contamination from the heater or the sample container surrounding the sample. This press constitutes a new tool for using neutron diffraction to study the structures of crystals and liquids under high pressures and temperatures.
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Affiliation(s)
- A Sano-Furukawa
- Quantum Beam Science Center, Japan Atomic Energy Agency, Ibaraki 319-1195, Japan
| | - T Hattori
- Quantum Beam Science Center, Japan Atomic Energy Agency, Ibaraki 319-1195, Japan
| | - H Arima
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - A Yamada
- The University of Shiga Prefecture, Shiga 522-8533, Japan
| | - S Tabata
- Sumitomo Heavy Industries Co., Ltd., Ehime 792-0001, Japan
| | - M Kondo
- Sumitomo Heavy Industries Co., Ltd., Ehime 792-0001, Japan
| | - A Nakamura
- Sumitomo Heavy Industries Co., Ltd., Ehime 792-0001, Japan
| | - H Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - T Yagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
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33
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Iizuka R, Komatsu K, Kagi H, Nagai T, Sano-Furukawa A, Hattori T, Gotou H, Yagi T. Phase transitions and hydrogen bonding in deuterated calcium hydroxide: High-pressure and high-temperature neutron diffraction measurements. J SOLID STATE CHEM 2014. [DOI: 10.1016/j.jssc.2014.06.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Cheng JG, Matsubayashi K, Nagasaki S, Hisada A, Hirayama T, Hedo M, Kagi H, Uwatoko Y. Integrated-fin gasket for palm cubic-anvil high pressure apparatus. Rev Sci Instrum 2014; 85:093907. [PMID: 25273739 DOI: 10.1063/1.4896473] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We described an integrated-fin gasket technique for the palm cubic-anvil apparatus specialized for the high-pressure and low-temperature measurements. By using such a gasket made from the semi-sintered MgO ceramics and the tungsten-carbide anvils of 2.5 mm square top, we successfully generate pressures over 16 GPa at both room and cryogenic temperatures down to 0.5 K. We observed a pressure self-increment for this specific configuration and further characterized the thermally induced pressure variation by monitoring the antiferromagnetic transition temperature of chromium up to 12 GPa. In addition to enlarge the pressure capacity, such a modified gasket also improves greatly the surviving rate of electrical leads hanging the sample inside a Teflon capsule filled with the liquid pressure-transmitting medium. These improvements should be attributed to the reduced extrusion of gasket materials during the initial compression.
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Affiliation(s)
- J-G Cheng
- Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - K Matsubayashi
- Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - S Nagasaki
- Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - A Hisada
- Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - T Hirayama
- Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - M Hedo
- Faculty of Science, University of Ryukyus, Senbaru, Nishihara, Okinawa 903-0213, Japan
| | - H Kagi
- Graduate School of Science, University of Tokyo, 7-3-1, Hongo Bunkyo-Ku, Tokyo 113-0033, Japan
| | - Y Uwatoko
- Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
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Shinozaki A, Mimura K, Kagi H, Komatu K, Noguchi N, Gotou H. Pressure-induced oligomerization of benzene at room temperature as a precursory reaction of amorphization. J Chem Phys 2014; 141:084306. [DOI: 10.1063/1.4893870] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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36
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Kagi H. High-pressure neutron beamline at J-PARC and applications to earth sciences. Acta Crystallogr A Found Adv 2014. [DOI: 10.1107/s2053273314096065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Construction of the high-pressure dedicated beamline, PLANET, in Japan Proton Accelerator Research Complex (J-PARC) has been completed in 2012 and scientific programs for general users have just started in 2014. The PLANET beamline has a focusing mirror for incident neutron and two 900detector banks. Each bank has 160 pieces of Position Sensitive Detectors (PSDs) filled with 3He gas. Each bank has a detector coverage of 9001110against the incident beam in the horizontal direction and 001350in the vertical direction. Radial collimators are attached in front of the detector banks to reduce the background. The instrumental resolution is 0.6% in Δd/d. The accessible d-spacing is normally 0.2–4.2 Å and is doubled in a double-frame setup. The power of the proton beam is around 300 kW and will be increased to 600 kW in 2014. The most characteristic feature of the PLANET beamline is the multi-anvil apparatus with six independently acting 500-tonne rams (6-axis press called "ATSUHIME"). Using ATSUHIME, we successfully observed neutron diffraction patterns of hydrous minerals at high pressure and high temperature without any contamination from sample-surrounding materials such as pressure transmitting media, anvils, and so on. This clearly shows that the incident slit and radial collimator installed in the beamline are very effective to obtain the diffractions under high pressure. We focus on pressure-responses on the structure of materials with hydrogen- bonding networks through neutron diffraction measurements at high pressure. These results will contribute to fundamental understanding of hydrous materials in the deep earth and icy material in the planets. In the presentation, our recent achievements from PLANET beamline will be reported.
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Matsumoto T, Maruoka T, Shimoda G, Obata H, Kagi H, Suzuki K, Yamamoto K, Mitsuguchi T, Hagino K, Tomioka N, Sambandam C, Brummer D, Klaus PM, Aggarwal P. Tritium in Japanese precipitation following the March 2011 Fukushima Daiichi Nuclear Plant accident. Sci Total Environ 2013; 445-446:365-370. [PMID: 23361040 DOI: 10.1016/j.scitotenv.2012.12.069] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Revised: 12/11/2012] [Accepted: 12/20/2012] [Indexed: 06/01/2023]
Abstract
Tritium concentrations in Japanese precipitation samples collected after the March 2011 accident at the Fukushima Dai-ichi Nuclear Power Plant (FNPP1) were measured. Values exceeding the pre-accident background were detected at three out of seven localities (Tsukuba, Kashiwa and Hongo) southwest of the FNPP1 at distances varying between 170 and 220 km from the source. The highest tritium content was found in the first rainfall in Tsukuba after the accident; however concentrations were 500 times less than the regulatory limit for tritium in drinking water. Tritium concentrations decreased steadily and rapidly with time, becoming indistinguishable from the pre-accident values within five weeks. The atmospheric tritium activities in the vicinity of the FNPP1 during the earliest stage of the accident was estimated to be 1.5×10(3) Bq/m(3), which is potentially capable of producing rainwater exceeding the regulatory limit, but only in the immediate vicinity of the source.
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Affiliation(s)
- Takuya Matsumoto
- Isotope Hydrology Section, Division of Physical and Chemical Sciences, International Atomic Energy Agency, Vienna International Centre, 1400 Vienna, Austria.
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Komatsu K, Kagi H, Yasuzuka T, Koizumi T, Iizuka R, Sugiyama K, Yokoyama Y. A design of backing seat and gasket assembly in diamond anvil cell for accurate single crystal x-ray diffraction to 5 GPa. Rev Sci Instrum 2011; 82:105107. [PMID: 22047329 DOI: 10.1063/1.3646460] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We designed a new cell assembly of diamond anvil cells for single crystal x-ray diffraction under pressure and demonstrate the application of the cell to the crystallographic studies for ice VI and ethanol high-pressure (HP) phase at 0.95(5) GPa and 1.95(2) GPa, respectively. The features of the assembly are: (1) the platy anvil and unique-shaped backing seat (called as "Wing seat") allowing the extremely wide opening angle up to ±65°, (2) the PFA-bulk metallic glass composite gasket allowing the easy attenuation correction and less background. Thanks to the designed assembly, the R(int) values after attenuation corrections are fairly good (0.0125 and 0.0460 for ice VI and ethanol HP phase, respectively), and the errors of the refined parameters are satisfactory small even for hydrogen positions, those are comparable to the results which obtained at ambient conditions. The result for ice VI is in excellent agreement with the previous study, and that for ethanol HP phase has remarkable contributions to the revision to its structure; the H12 site, which makes gauche molecules with O1, C2, and C3 sites, may not exist so that only trans conformers are present at least at 1.95(2) GPa. The accurate intensities using the cell assembly allow us to extract the electron density for ethanol HP phase by the maximum entropy method.
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Affiliation(s)
- K Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan.
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39
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Munakata K, Ishida H, Mathan K, Ibuka S, Sato TJ, Nishi M, Matsubayashi K, Uwatoko Y, Kagi H. Development of cubic anvil type high pressure apparatus for neutron scattering at low temperature. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311079359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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40
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Yasuzuka T, Komatsu K, Kagi H. A Revisit to High-pressure Transitions of Pyridine: A New Phase Transition at 5 GPa and Formation of a Crystalline Phase over 20 GPa. CHEM LETT 2011. [DOI: 10.1246/cl.2011.733] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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41
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Kamiya N, Tsunomori F, Kagi H, Notsu K. Dynamic Light Scattering Study of the Inhibiting Effect on Crystal Growth of Calcium Carbonate. BCSJ 2011. [DOI: 10.1246/bcsj.20100228] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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42
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Ohta A, Kagi H, Tsuno H, Nomura M, Okai T, Yanagisawa N. IR and XANES spectroscopic studies of humic acids reacting with Cr(III) and Cr(VI). ACTA ACUST UNITED AC 2011. [DOI: 10.9795/bullgsj.62.347] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abe J, Arakawa M, Hattori T, Arima H, Kagi H, Komatsu K, Sano-Furukawa A, Uwatoko Y, Matsubayashi K, Harjo S, Moriai A, Ito T, Aizawa K, Arai M, Utsumi W. A cubic-anvil high-pressure device for pulsed neutron powder diffraction. Rev Sci Instrum 2010; 81:043910. [PMID: 20441353 DOI: 10.1063/1.3384238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A compact cubic-anvil high-pressure device was developed for in situ neutron powder diffraction studies. In this device, a cubic shaped pressure medium is compressed by six anvils, and neutron beams pass through gaps between the anvils. The first high-pressure experiment using this device was conducted at J-PARC and clearly showed the neutron diffraction patterns of Pb. Combining the cubic-anvil high-pressure device with a pulsed neutron source will prove to be a useful tool for neutron diffraction experiments.
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Affiliation(s)
- J Abe
- Quantum Beam Science Directorate, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
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Komatsu K, Kuribayashi T, Kudoh Y, Kagi H. Crystal structures of high-pressure phases in the alumina-water system: I. Single crystal X-ray diffraction and molecular dynamics simulation ofη-Al(OH)3. ACTA ACUST UNITED AC 2009. [DOI: 10.1524/zkri.2007.222.1.1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The high-pressure phase of gibbsite has been studied byin situsingle crystal X-ray diffraction method and molecular dynamics (MD) simulation at 3.0 GPa. The crystal structure of the high-pressure phase,η-Al(OH)3, was successfully determined by direct methods based on the intensities of X-ray diffraction. The space group and lattice constants forη-Al(OH)3areP21/b11 (#14),a= 8.612(3) Å,b= 5.013(2) Å,c= 9.194(5) Å andα= 90.34(6)°, respectively. The crystal structure ofη-Al(OH)3consists of an Al octahedral layer, and the layers are connected via H-bonds. The mechanism of the phase transition from gibbsite toη-Al(OH)3is also discussed in the context of previously reported powder X-ray diffraction data.
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Moroz T, Ragozin A, Salikhov D, Belikova G, Puchkov V, Kagi H. Micro-Raman spectra of ugrandite garnet. Spectrochim Acta A Mol Biomol Spectrosc 2009; 73:436-439. [PMID: 19084471 DOI: 10.1016/j.saa.2008.10.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2008] [Revised: 09/17/2008] [Accepted: 10/23/2008] [Indexed: 05/27/2023]
Abstract
The natural garnets from chromite ores associated with pegmatoid pyroxenites of Sangalyk area (Uchaly ore district, southern Urals, Russia) were studied by means of micro-Raman spectroscopy. The compositions of these garnets were close to ugrandite, an isomorphous intermediate group of uvarovite-grossularite-andradite, X(3)Y(2)(SiO(4))(3), X = Ca(2+), Y = Al(3+), Fe(3+), Cr(3+), according to Raman spectra and X-ray microprobe analyses. An assignment of most of the observed bands in visible and near infrared Raman spectra is reported.
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Affiliation(s)
- T Moroz
- Institute of geology and mineralogy, Siberian Branch of Russian Academy of Science, Pr. Akad. Koptyuga, 3, 630090 Novosibirs, Russia.
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Odake S, Fukura S, Kagi H. High precision in Raman frequency achieved using real-time calibration with a neon emission line: application to three-dimensional stress mapping observations. Appl Spectrosc 2008; 62:1084-1087. [PMID: 18926016 DOI: 10.1366/000370208786049169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A three-dimensional (3D) Raman mapping system with a real-time calibration function was developed for detecting stress distributions in solid materials from subtle frequency shifts in Raman spectra. An atomic emission line of neon at 918.3 cm(-1) when excited at 514.5 nm was used as a wavenumber standard. An emission spectrum of neon and a Raman spectrum from a sample were introduced into a single polychromator using a bifurcated optical fiber. These two spectra were recorded simultaneously on a charge-coupled device (CCD) detector using double-track mode. Energy deviation induced by the fluctuation of laboratory temperature, etc., was removed effectively using the neon emission line. High stability during long measurements was achieved. By applying curve fitting, positions of the Raman line were determined with precision of about 0.05 cm(-1). The present system was applied to measurements of residual pressure around mineral inclusions in a natural diamond: 3D stress mapping was achieved.
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Affiliation(s)
- Shoko Odake
- Geochemical Laboratory, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033, Japan
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Komatsu K, Sano A, Kagi H, Loveday J. The interaction between H-bond and polyhedral network in the polymorphs of aluminium hydroxide. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308085784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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48
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Hara K, Akiyama R, Takakusagi S, Uosaki K, Yoshino T, Kagi H, Sawamura M. Self-Assembled Monolayers of Compact Phosphanes with Alkanethiolate Pendant Groups: Remarkable Reusability and Substrate Selectivity in Rh Catalysis. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200800884] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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49
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Hara K, Akiyama R, Takakusagi S, Uosaki K, Yoshino T, Kagi H, Sawamura M. Self-Assembled Monolayers of Compact Phosphanes with Alkanethiolate Pendant Groups: Remarkable Reusability and Substrate Selectivity in Rh Catalysis. Angew Chem Int Ed Engl 2008; 47:5627-30. [DOI: 10.1002/anie.200800884] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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50
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