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Kawaguchi S, Kobayashi S, Yamada H, Ashitani H, Takemoto M, Imai Y, Hatsui T, Sugimoto K, Sakata O. High-throughput and high-resolution powder X-ray diffractometer consisting of six sets of 2D CdTe detectors with variable sample-to-detector distance and innovative automation system. JOURNAL OF SYNCHROTRON RADIATION 2024; 31:955-967. [PMID: 38900456 PMCID: PMC11226175 DOI: 10.1107/s1600577524003539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 04/19/2024] [Indexed: 06/21/2024]
Abstract
The demand for powder X-ray diffraction analysis continues to increase in a variety of scientific fields, as the excellent beam quality of high-brightness synchrotron light sources enables the acquisition of high-quality measurement data with high intensity and angular resolution. Synchrotron powder diffraction has enabled the rapid measurement of many samples and various in situ/operando experiments in nonambient sample environments. To meet the demands for even higher throughput measurements using high-energy X-rays at SPring-8, a high-throughput and high-resolution powder diffraction system has been developed. This system is combined with six sets of two-dimensional (2D) CdTe detectors for high-energy X-rays, and various automation systems, including a system for automatic switching among large sample environmental equipment, have been developed in the third experimental hutch of the insertion device beamline BL13XU at SPring-8. In this diffractometer system, high-brilliance and high-energy X-rays ranging from 16 to 72 keV are available. The powder diffraction data measured under ambient and various nonambient conditions can be analysed using Rietveld refinement and the pair distribution function. Using the 2D CdTe detectors with variable sample-to-detector distance, three types of scan modes have been established: standard, single-step and high-resolution. A major feature is the ability to measure a whole powder pattern with millisecond resolution. Equally important, this system can measure powder diffraction data with high Q exceeding 30 Å-1 within several tens of seconds. This capability is expected to contribute significantly to new research avenues using machine learning and artificial intelligence by utilizing the large amount of data obtained from high-throughput measurements.
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Affiliation(s)
- Shogo Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI)1-1-1 KoutoSayo-cho, Sayo-gunHyogo679-5198Japan
| | - Shintaro Kobayashi
- Japan Synchrotron Radiation Research Institute (JASRI)1-1-1 KoutoSayo-cho, Sayo-gunHyogo679-5198Japan
| | - Hiroki Yamada
- Japan Synchrotron Radiation Research Institute (JASRI)1-1-1 KoutoSayo-cho, Sayo-gunHyogo679-5198Japan
| | - Hirotaka Ashitani
- Japan Synchrotron Radiation Research Institute (JASRI)1-1-1 KoutoSayo-cho, Sayo-gunHyogo679-5198Japan
| | - Michitaka Takemoto
- Japan Synchrotron Radiation Research Institute (JASRI)1-1-1 KoutoSayo-cho, Sayo-gunHyogo679-5198Japan
| | - Yasuhiko Imai
- Japan Synchrotron Radiation Research Institute (JASRI)1-1-1 KoutoSayo-cho, Sayo-gunHyogo679-5198Japan
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo679-5148, Japan
| | - Takaki Hatsui
- Japan Synchrotron Radiation Research Institute (JASRI)1-1-1 KoutoSayo-cho, Sayo-gunHyogo679-5198Japan
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo679-5148, Japan
| | - Kunihisa Sugimoto
- Japan Synchrotron Radiation Research Institute (JASRI)1-1-1 KoutoSayo-cho, Sayo-gunHyogo679-5198Japan
| | - Osami Sakata
- Japan Synchrotron Radiation Research Institute (JASRI)1-1-1 KoutoSayo-cho, Sayo-gunHyogo679-5198Japan
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2
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Sakanaka Y, Hiraide S, Sugawara I, Uematsu H, Kawaguchi S, Miyahara MT, Watanabe S. Generalised analytical method unravels framework-dependent kinetics of adsorption-induced structural transition in flexible metal-organic frameworks. Nat Commun 2023; 14:6862. [PMID: 37938232 PMCID: PMC10632496 DOI: 10.1038/s41467-023-42448-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 10/10/2023] [Indexed: 11/09/2023] Open
Abstract
Flexible metal-organic frameworks (MOFs) exhibiting adsorption-induced structural transition can revolutionise adsorption separation processes, including CO2 separation, which has become increasingly important in recent years. However, the kinetics of this structural transition remains poorly understood despite being crucial to process design. Here, the CO2-induced gate opening of ELM-11 ([Cu(BF4)2(4,4'-bipyridine)2]n) is investigated by time-resolved in situ X-ray powder diffraction, and a theoretical kinetic model of this process is developed to gain atomistic insight into the transition dynamics. The thus-developed model consists of the differential pressure from the gate opening (indicating the ease of structural transition) and reaction model terms (indicating the transition propagation within the crystal). The reaction model of ELM-11 is an autocatalytic reaction with two pathways for CO2 penetration of the framework. Moreover, gas adsorption analyses of two other flexible MOFs with different flexibilities indicate that the kinetics of the adsorption-induced structural transition is highly dependent on framework structure.
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Affiliation(s)
- Yuta Sakanaka
- Department of Chemical Engineering, Kyoto University, Nishikyo, Kyoto, 615-8510, Japan
| | - Shotaro Hiraide
- Department of Chemical Engineering, Kyoto University, Nishikyo, Kyoto, 615-8510, Japan.
| | - Iori Sugawara
- Department of Chemical Engineering, Kyoto University, Nishikyo, Kyoto, 615-8510, Japan
| | - Hajime Uematsu
- Department of Chemical Engineering, Kyoto University, Nishikyo, Kyoto, 615-8510, Japan
| | - Shogo Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan
| | - Minoru T Miyahara
- Department of Chemical Engineering, Kyoto University, Nishikyo, Kyoto, 615-8510, Japan
| | - Satoshi Watanabe
- Department of Chemical Engineering, Kyoto University, Nishikyo, Kyoto, 615-8510, Japan.
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3
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Yokoyama Y, Kawaguchi S, Mizumaki M. Bayesian framework for analyzing adsorption processes observed via time-resolved X-ray diffraction. Sci Rep 2023; 13:14349. [PMID: 37699922 PMCID: PMC10497613 DOI: 10.1038/s41598-023-40573-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 08/13/2023] [Indexed: 09/14/2023] Open
Abstract
Clarifying dynamic processes of materials is an important research topic in materials science. Time-resolved X-ray diffraction is a powerful technique for probing dynamic processes. To understand the dynamics, it is essential to analyze time-series data using appropriate time-evolution models and accurate start times of dynamic processes. However, conventional analyses based on non-linear least-squares fitting have difficulty both evaluating time-evolution models and estimating start times. Here, we establish a Bayesian framework including time-evolution models. We investigate an adsorption process, which is a representative dynamic process, and extract information about the time-evolution model and adsorption start time. The information enables us to estimate adsorption properties such as rate constants more accurately, thus achieving more precise understanding of dynamic adsorption processes. Our framework is highly versatile, can be applied to other dynamic processes such as chemical reactions, and is expected to be utilized in various areas of materials science.
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Affiliation(s)
- Yuichi Yokoyama
- Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo, 679-5198, Japan
| | - Shogo Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo, 679-5198, Japan
| | - Masaichiro Mizumaki
- Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo, 679-5198, Japan.
- Faculty of Science, Kumamoto University, Kurokami, Kumamoto, 860-8555, Japan.
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4
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Yamamoto T, Kawaguchi S, Kosuge T, Sugai A, Tsunoda N, Kumagai Y, Beppu K, Ohmi T, Nagase T, Higashi K, Kato K, Nitta K, Uruga T, Yamazoe S, Oba F, Tanaka T, Azuma M, Hosokawa S. Emergence of Dynamically-Disordered Phases During Fast Oxygen Deintercalation Reaction of Layered Perovskite. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023:e2301876. [PMID: 37096836 DOI: 10.1002/advs.202301876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Indexed: 05/03/2023]
Abstract
Determination of a reaction pathway is an important issue for the optimization of reactions. However, reactions in solid-state compounds have remained poorly understood because of their complexity and technical limitations. Here, using state-of-the-art high-speed time-resolved synchrotron X-ray techniques, the topochemical solid-gas reduction mechanisms in layered perovskite Sr3 Fe2 O7- δ (from δ ∼ 0.4 to δ = 1.0), which is promising for an environmental catalyst material is revealed. Pristine Sr3 Fe2 O7- δ shows a gradual single-phase structural evolution during reduction, indicating that the reaction continuously proceeds through thermodynamically stable phases. In contrast, a nonequilibrium dynamically-disordered phase emerges a few seconds before a first-order transition during the reduction of a Pd-loaded sample. This drastic change in the reaction pathway can be explained by a change in the rate-determining step. The synchrotron X-ray technique can be applied to various solid-gas reactions and provides an opportunity for gaining a better understanding and optimizing reactions in solid-state compounds.
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Affiliation(s)
- Takafumi Yamamoto
- Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 2268503, Japan
| | - Shogo Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-gun, Hyogo, 6795198, Japan
| | - Taiki Kosuge
- Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 2268503, Japan
| | - Akira Sugai
- Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 2268503, Japan
| | - Naoki Tsunoda
- Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 2268503, Japan
| | - Yu Kumagai
- Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 2268503, Japan
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 9808577, Japan
| | - Kosuke Beppu
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 1920397, Japan
| | - Takuya Ohmi
- Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 2268503, Japan
| | - Teppei Nagase
- Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 2268503, Japan
| | - Kotaro Higashi
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-gun, Hyogo, 6795198, Japan
| | - Kazuo Kato
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-gun, Hyogo, 6795198, Japan
| | - Kiyofumi Nitta
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-gun, Hyogo, 6795198, Japan
| | - Tomoya Uruga
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-gun, Hyogo, 6795198, Japan
| | - Seiji Yamazoe
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 1920397, Japan
- Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Katsura, Nishikyo-ku, Kyoto, 6158245, Japan
| | - Fumiyasu Oba
- Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 2268503, Japan
| | - Tsunehiro Tanaka
- Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Katsura, Nishikyo-ku, Kyoto, 6158245, Japan
- Department of Molecular Engineering, Graduate school of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 6158510, Japan
| | - Masaki Azuma
- Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 2268503, Japan
- Living Systems Materialogy (LiSM) Research Group, International Research Frontiers Initiative (IRFI), Tokyo Institute of Technology, Yokohama, 2268501, Japan
- Kanagawa Institute of Industrial Science and Technology (KISTEC), 705-1 Shimoimaizumi, Ebina, Kanagawa, 2430435, Japan
| | - Saburo Hosokawa
- Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Katsura, Nishikyo-ku, Kyoto, 6158245, Japan
- Faculty of Materials Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 6068585, Japan
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Ashitani H, Kawaguchi S, Furukawa H, Ishibashi H, Otake K, Kitagawa S, Kubota Y. Time-resolved in-situ X-ray diffraction and crystal structure analysis of porous coordination polymer CPL-1 in CO2 adsorption. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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6
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Nakajima H, Osako A, Yodoshi N, Yamada Y, Tsukasaki H, Harada K, Sakai Y, Shigematsu K, Nishikubo T, Azuma M, Mori S. Magnetization Controlled by Crystallization in Soft Magnetic Fe-Si-B-P-Cu Alloys. Microscopy (Oxf) 2022:6673902. [PMID: 35997566 DOI: 10.1093/jmicro/dfac042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/19/2022] [Accepted: 08/22/2022] [Indexed: 11/14/2022] Open
Abstract
Soft magnetic materials have low coercive fields and high permeability. Recently, nanocrystalline alloys obtained using annealing amorphous alloys have attracted much interest since nanocrystalline alloys with small grain sizes of tens of nanometers exhibit low coercive fields comparable to that of amorphous alloys. Since nanocrystalline soft magnetic materials attain remarkable soft magnetic properties by controlling the grain size, the crystal grains' microstructure has a substantial influence on the soft magnetic properties. In this research, we examined the magnetic properties of Fe-Si-B-P-Cu nanocrystalline soft magnetic alloys obtained by annealing amorphous alloys. During crystallization, the observation findings reveal the correlation between the generated microstructures and soft magnetic properties.
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Affiliation(s)
- Hiroshi Nakajima
- Department of Materials Science, Osaka Metropolitan University, Sakai, Osaka 599-8531, Japan
| | - Akihiro Osako
- Department of Materials Science, Osaka Metropolitan University, Sakai, Osaka 599-8531, Japan
| | - Noriharu Yodoshi
- Department of Mechanical Engineering, Kyushu University, Fukuoka, Japan
| | - Yoshiharu Yamada
- Osaka Research Institute of Industrial Science and Technology, Izumi, Osaka, 594-1157 Japan
| | - Hirofumi Tsukasaki
- Department of Materials Science, Osaka Metropolitan University, Sakai, Osaka 599-8531, Japan
| | - Ken Harada
- Center for Emergent Matter Science (CEMS), Institute of Physical and Chemical Research (RIKEN), Hatoyama, Saitama 350-0395, Japan
| | - Yuki Sakai
- Laboratory for Materials and Structures, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8503, Japan.,Kanagawa Institute of Industrial Science and Technology, Shimoimaizumi 705-1, Ebina, Kanagawa 243-0435, Japan
| | - Kei Shigematsu
- Laboratory for Materials and Structures, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8503, Japan.,Kanagawa Institute of Industrial Science and Technology, Shimoimaizumi 705-1, Ebina, Kanagawa 243-0435, Japan
| | - Takumi Nishikubo
- Laboratory for Materials and Structures, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8503, Japan.,Kanagawa Institute of Industrial Science and Technology, Shimoimaizumi 705-1, Ebina, Kanagawa 243-0435, Japan
| | - Masaki Azuma
- Laboratory for Materials and Structures, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8503, Japan.,Kanagawa Institute of Industrial Science and Technology, Shimoimaizumi 705-1, Ebina, Kanagawa 243-0435, Japan
| | - Shigeo Mori
- Department of Materials Science, Osaka Metropolitan University, Sakai, Osaka 599-8531, Japan
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7
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Saito D, Galica T, Nishibori E, Yoshida M, Kobayashi A, Kato M. Reversible and Stepwise Single‐Crystal‐to‐Single‐Crystal Transformation of a Platinum(II) Complex with Vapochromic Luminescence. Chemistry 2022; 28:e202200703. [DOI: 10.1002/chem.202200703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Daisuke Saito
- Department of Chemistry Faculty of Science Hokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
- Department of Applied Chemistry for Environment School of Biological and Environmental Sciences Kwansei Gakuin University 1 Gakuen Uegahara Sanda Hyogo 669-1330 Japan
| | - Tomasz Galica
- Department of Physics Faculty of Pure and Applied Sciences University of Tsukuba 1-1-1, Tennodai Tsukuba Ibaraki 305-8571 Japan
| | - Eiji Nishibori
- Department of Physics Faculty of Pure and Applied Sciences University of Tsukuba 1-1-1, Tennodai Tsukuba Ibaraki 305-8571 Japan
| | - Masaki Yoshida
- Department of Chemistry Faculty of Science Hokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
| | - Atsushi Kobayashi
- Department of Chemistry Faculty of Science Hokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
| | - Masako Kato
- Department of Chemistry Faculty of Science Hokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060-0810 Japan
- Department of Applied Chemistry for Environment School of Biological and Environmental Sciences Kwansei Gakuin University 1 Gakuen Uegahara Sanda Hyogo 669-1330 Japan
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Maeda K, Minta H, Kondo A, Kawaguchi S. Elucidation of Nitrogen Adsorption Behavior of AlMepO-α by In-Situ Powder X-ray Diffraction Study. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kazuyuki Maeda
- Department of Applied Chemistry, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Hiroaki Minta
- Department of Applied Chemistry, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Atsushi Kondo
- Department of Applied Chemistry, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Shogo Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
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9
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Matsuno T, Fukunaga K, Kobayashi S, Sarkar P, Sato S, Ikeda T, Isobe H. Crystalline Naphthylene Macrocycles Capturing Gaseous Small Molecules in Chiral Nanopores. Chem Asian J 2020; 15:3829-3835. [PMID: 32896993 DOI: 10.1002/asia.202000876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Indexed: 11/06/2022]
Abstract
A series of chiral naphthylene macrocycles, [n]cyclo-epi-naphthylenes ([n]CeNAPs), possessing epi-linkages were synthesized by one-pot macrocyclization. With chiral (R)- or (S)-1,1'-linkages embedded in binaphthyl precursors, the macrocycles were assembled in polygonal structures possessing chiral hinges as corners. Among four chiral [n]CeNAP variants, [8]CeNAP with eight naphthylene panels formed robust columnar assemblies in crystals. The nanoporous crystals maintained a columnar assembly structure even after the removal of encapsulated solvent molecules, and their gas adsorption behavior was thoroughly investigated. Gas adsorption, including state-of-the-art in situ crystallographic analyses, revealed accurate atomic-level structures of the nanopores trapping gaseous N2 molecules in chiral C2 arrangements. With macrocycles as basic frameworks, functional nanopores may be exploited for chiral small-molecule alignments.
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Affiliation(s)
- Taisuke Matsuno
- Department of Chemistry, The University of Tokyo, Hongo, Bunkyu-ku, Tokyo, 113-0033, Japan
| | - Kengo Fukunaga
- Department of Chemistry, The University of Tokyo, Hongo, Bunkyu-ku, Tokyo, 113-0033, Japan
| | - Shuhei Kobayashi
- Department of Chemistry and Advanced Institute for Materials Research, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan
| | - Parantap Sarkar
- Department of Chemistry and Advanced Institute for Materials Research, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan.,Present address: Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita-ku, Sapporo, 060-8628, Japan
| | - Sota Sato
- Department of Chemistry, The University of Tokyo, Hongo, Bunkyu-ku, Tokyo, 113-0033, Japan.,Present address: Department of Applied Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Takuji Ikeda
- Research Institute for Chemical Process Technology, National Institute of Advanced Industrial Science and Technology, Miyagino-ku, Sendai, 983-8551, Japan
| | - Hiroyuki Isobe
- Department of Chemistry, The University of Tokyo, Hongo, Bunkyu-ku, Tokyo, 113-0033, Japan
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Hiraide S, Sakanaka Y, Kajiro H, Kawaguchi S, Miyahara MT, Tanaka H. High-throughput gas separation by flexible metal-organic frameworks with fast gating and thermal management capabilities. Nat Commun 2020; 11:3867. [PMID: 32747638 PMCID: PMC7400644 DOI: 10.1038/s41467-020-17625-3] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 07/06/2020] [Indexed: 11/08/2022] Open
Abstract
Establishing new energy-saving systems for gas separation using porous materials is indispensable for ensuring a sustainable future. Herein, we show that ELM-11 ([Cu(BF4)2(4,4'-bipyridine)2]n), a member of flexible metal-organic frameworks (MOFs), exhibits rapid responsiveness to a gas feed and an 'intrinsic thermal management' capability originating from a structural deformation upon gas adsorption (gate-opening). These two characteristics are suitable for developing a pressure vacuum swing adsorption (PVSA) system with rapid operations. A combined experimental and theoretical study reveals that ELM-11 enables the high-throughput separation of CO2 from a CO2/CH4 gas mixture through adiabatic operations, which are extreme conditions in rapid pressure vacuum swing adsorption. We also propose an operational solution to the 'slipping-off' problem, which is that the flexible MOFs cannot adsorb target molecules when the partial pressure of the target gas decreases below the gate-opening pressure. Furthermore, the superiority of our proposed system over conventional systems is demonstrated.
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Affiliation(s)
- Shotaro Hiraide
- Department of Chemical Engineering, Kyoto University, Nishikyo, Kyoto, 615-8510, Japan
| | - Yuta Sakanaka
- Department of Chemical Engineering, Kyoto University, Nishikyo, Kyoto, 615-8510, Japan
| | - Hiroshi Kajiro
- Nippon Steel Corporation, 20-1 Shintomi, Futtsu, Chiba, 293-8511, Japan
| | - Shogo Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan
| | - Minoru T Miyahara
- Department of Chemical Engineering, Kyoto University, Nishikyo, Kyoto, 615-8510, Japan.
| | - Hideki Tanaka
- Research Initiative for Supra-Materials (RISM), Shinshu University, 4-17-1 Wakasato, Nagano, 380-8553, Japan.
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