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Enjou T, Goto S, Liu Q, Ishiwari F, Saeki A, Uematsu T, Ikemoto Y, Watanabe S, Matsuba G, Ishibashi K, Watanabe G, Minakata S, Sagara Y, Takeda Y. Correction: Water-dispersible donor-acceptor-donor π-conjugated bolaamphiphiles enabling a humidity-responsive luminescence color change. Chem Commun (Camb) 2024; 60:3862. [PMID: 38526752 DOI: 10.1039/d4cc90105c] [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: 03/27/2024]
Abstract
Correction for 'Water-dispersible donor-acceptor-donor π-conjugated bolaamphiphiles enabling a humidity-responsive luminescence color change' by Tomoya Enjou et al., Chem. Commun., 2024, https://doi.org/10.1039/d3cc05749f.
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Affiliation(s)
- Tomoya Enjou
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Shimpei Goto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Qiming Liu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Fumitaka Ishiwari
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
- Frontier Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Yamadaoka 1-1, Suita, Osaka 565-0871, Japan
| | - Akinori Saeki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Yamadaoka 1-1, Suita, Osaka 565-0871, Japan
| | - Taro Uematsu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Yuka Ikemoto
- Japan Synchrotron Radiation Research Institute (JASRI) SPring-8, 1-1-1 Koto, Sayo, Hyogo 679-5198, Japan
| | - Sora Watanabe
- Graduate School of Organic Materials Science, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
| | - Go Matsuba
- Graduate School of Organic Materials Science, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
| | - Kouichiro Ishibashi
- Department of Physics, School of Science, Kitasato University, 1-15-1 Kitazato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
| | - Go Watanabe
- Department of Physics, School of Science, Kitasato University, 1-15-1 Kitazato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
- Department of Data Science, School of Frontier Engineering, Kitasato University, 1-15-1 Kitazato, Minato-ku, Sagamihara, Kanagawa 252-0373, Japan
- Kanagawa Institute of Industrial Science and Technology (KISTEC), 705-1 Shimoimaizumi, Ebina, Kanagawa 243-0435, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Yoshimitsu Sagara
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
- Living Systems Materialogy (LiSM) Research Group, International Research Frontiers Initiative (IRFI), Tokyo Institute of Technology, 4259 Nagatsuda-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
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Enjou T, Goto S, Liu Q, Ishiwari F, Saeki A, Uemtasu T, Ikemoto Y, Watanabe S, Matsuba G, Ishibashi K, Watanabe G, Minakata S, Sagara Y, Takeda Y. Water-dispersible donor-acceptor-donor π-conjugated bolaamphiphiles enabling a humidity-responsive luminescence color change. Chem Commun (Camb) 2024; 60:3653-3656. [PMID: 38488046 DOI: 10.1039/d3cc05749f] [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: 03/26/2024]
Abstract
Novel water-dispersible donor-acceptor-donor π-conjugated bolaamphiphiles, having dibenzophenazine as the acceptor and heteroatom-bridged amphiphilic diarylamines as the donors, have been developed. The materials displayed a distinct photoluminescence color change in response to humidity in a poly(vinylalcohol) matrix.
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Affiliation(s)
- Tomoya Enjou
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Shimpei Goto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Qiming Liu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Fumitaka Ishiwari
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
- Frontier Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Yamadaoka 1-1, Suita, Osaka 565-0871, Japan
| | - Akinori Saeki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Yamadaoka 1-1, Suita, Osaka 565-0871, Japan
| | - Taro Uemtasu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Yuka Ikemoto
- Japan Synchrotron Radiation Research Institute (JASRI) SPring-8, 1-1-1 Koto, Sayo, Hyogo 679-5198, Japan
| | - Sora Watanabe
- Graduate School of Organic Materials Science, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
| | - Go Matsuba
- Graduate School of Organic Materials Science, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
| | - Kouichiro Ishibashi
- Department of Physics, School of Science, Kitasato University, 1-15-1 Kitazato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
| | - Go Watanabe
- Department of Physics, School of Science, Kitasato University, 1-15-1 Kitazato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
- Department of Data Science, School of Frontier Engineering, Kitasato University, 1-15-1 Kitazato, Minato-ku, Sagamihara, Kanagawa 252-0373, Japan
- Kanagawa Institute of Industrial Science and Technology (KISTEC), 705-1 Shimoimaizumi, Ebina, Kanagawa 243-0435, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
| | - Yoshimitsu Sagara
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
- Living Systems Materialogy (LiSM) Research Group, International Research Frontiers Initiative (IRFI), Tokyo Institute of Technology, 4259 Nagatsuda-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan.
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Wang M, Kono M, Yamaguchi Y, Islam J, Shoji S, Kitagawa Y, Fushimi K, Watanabe S, Matsuba G, Yamamoto A, Tanaka M, Tsuda M, Tanaka S, Hasegawa Y. Structure-changeable luminescent Eu(III) complex as a human cancer grade probing system for brain tumor diagnosis. Sci Rep 2024; 14:778. [PMID: 38253656 PMCID: PMC10803341 DOI: 10.1038/s41598-023-50138-9] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 12/15/2023] [Indexed: 01/24/2024] Open
Abstract
Accurate determination of human tumor malignancy is important for choosing efficient and safe therapies. Bioimaging technologies based on luminescent molecules are widely used to localize and distinguish active tumor cells. Here, we report a human cancer grade probing system (GPS) using a water-soluble and structure-changeable Eu(III) complex for the continuous detection of early human brain tumors of different malignancy grades. Time-dependent emission spectra of the Eu(III) complexes in various types of tumor cells were recorded. The radiative rate constants (kr), which depend on the geometry of the Eu(III) complex, were calculated from the emission spectra. The tendency of the kr values to vary depended on the tumor cells at different malignancy grades. Between T = 0 and T = 3 h of invasion, the kr values exhibited an increase of 4% in NHA/TS (benign grade II gliomas), 7% in NHA/TSR (malignant grade III gliomas), and 27% in NHA/TSRA (malignant grade IV gliomas). Tumor cells with high-grade malignancy exhibited a rapid upward trend in kr values. The cancer GPS employs Eu(III) emissions to provide a new diagnostic method for determining human brain tumor malignancy.
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Affiliation(s)
- Mengfei Wang
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 001-0021, Japan.
- Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan.
| | - Masaya Kono
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Yusaku Yamaguchi
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Jahidul Islam
- Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Sunao Shoji
- Department of Engineering, Nara Women's University, Nara, 630-8506, Japan
| | - Yuichi Kitagawa
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 001-0021, Japan
- Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Koji Fushimi
- Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Sora Watanabe
- Graduate School of Organic Material Engineering, Yamagata University, Yonezawa, Yamagata, 992-8510, Japan
| | - Go Matsuba
- Graduate School of Organic Material Engineering, Yamagata University, Yonezawa, Yamagata, 992-8510, Japan
| | - Akihisa Yamamoto
- Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto, 606-8501, Japan
| | - Motomu Tanaka
- Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto, 606-8501, Japan
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120, Heidelberg, Germany
| | - Masumi Tsuda
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 001-0021, Japan
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo, Hokkaido, 060-8638, Japan
| | - Shinya Tanaka
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 001-0021, Japan
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo, Hokkaido, 060-8638, Japan
| | - Yasuchika Hasegawa
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 001-0021, Japan.
- Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan.
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4
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Okada T, Ishii M, Sato H, Matsuba G. Morphologies of Comb-like Polyacrylic Acid/Polyacrylate Copolymers as Functions of the Degree of Derivatization with n-C 22H 45 Side Chains. Polymers (Basel) 2023; 15:4663. [PMID: 38139915 PMCID: PMC10748179 DOI: 10.3390/polym15244663] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/03/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023] Open
Abstract
Polymers with crystallizable side chains have numerous applications, and their properties depend on their crystal morphologies and phase separation. Structural analysis on a wide spatial scale plays an important role in controlling the thermal properties and higher-order structures of these polymers. In this study, we elucidated the melting and crystallization processes of copolymers with varying crystallizable side-chain fractions over a wide spatial range. Differential scanning calorimetry revealed that the enthalpies of melting and crystallization increased linearly with increasing crystallizable side-chain fraction. The results of wide-angle X-ray scattering indicated that the crystal lattice was hexagonal. Conversely, spherulite-like higher-order architectures with linear structures and radial spreading were observed in the highly crystallizable components, but no micrometer-scale structures were observed in the less crystallizable components. In situ small-angle X-ray scattering was used to elucidate the phase separation and mixing processes. Lamellar crystallites were observed at crystallizable side-chain fractions of >55 wt.%, whereas small crystallites were observed at fractions of <45 wt.%. At temperatures above the order-disorder transition temperature, density fluctuations caused by correlation holes were observed. These properties have a strong effect on the crystallizable side-chain fraction.
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Affiliation(s)
- Tomoya Okada
- Graduate School of Organic Materials Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Yamagata, Japan
| | - Mizuho Ishii
- Graduate School of Organic Materials Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Yamagata, Japan
| | - Harumi Sato
- Graduate School of Human Development and Environment, Kobe University, Kobe 657-8501, Hyogo, Japan;
| | - Go Matsuba
- Graduate School of Organic Materials Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Yamagata, Japan
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5
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Ikura R, Kajimoto K, Park J, Murayama S, Fujiwara Y, Osaki M, Suzuki T, Shirakawa H, Kitamura Y, Takahashi H, Ohashi Y, Obata S, Harada A, Ikemoto Y, Nishina Y, Uetsuji Y, Matsuba G, Takashima Y. Highly Stretchable Stress-Strain Sensor from Elastomer Nanocomposites with Movable Cross-links and Ketjenblack. ACS Polym Au 2023; 3:394-405. [PMID: 37841949 PMCID: PMC10571104 DOI: 10.1021/acspolymersau.3c00010] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 08/30/2023] [Accepted: 08/31/2023] [Indexed: 10/17/2023]
Abstract
Practical applications like very thin stress-strain sensors require high strength, stretchability, and conductivity, simultaneously. One of the approaches is improving the toughness of the stress-strain sensing materials. Polymeric materials with movable cross-links in which the polymer chain penetrates the cavity of cyclodextrin (CD) demonstrate enhanced strength and stretchability, simultaneously. We designed two approaches that utilize elastomer nanocomposites with movable cross-links and carbon filler (ketjenblack, KB). One approach is mixing SC (a single movable cross-network material), a linear polymer (poly(ethyl acrylate), PEA), and KB to obtain their composite. The electrical resistance increases proportionally with tensile strain, leading to the application of this composite as a stress-strain sensor. The responses of this material are stable for over 100 loading and unloading cycles. The other approach is a composite made with KB and a movable cross-network elastomer for knitting dissimilar polymers (KP), where movable cross-links connect the CD-modified polystyrene (PSCD) and PEA. The obtained composite acts as a highly sensitive stress-strain sensor that exhibits an exponential increase in resistance with increasing tensile strain due to the polymer dethreading from the CD rings. The designed preparations of highly repeatable or highly responsive stress-strain sensors with good mechanical properties can help broaden their application in electrical devices.
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Affiliation(s)
- Ryohei Ikura
- Department
of Macromolecular Science, Graduate School of Science, Osaka University. 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Forefront
Research Center for Fundamental Sciences, Osaka University. 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Kota Kajimoto
- Department
of Macromolecular Science, Graduate School of Science, Osaka University. 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Junsu Park
- Department
of Macromolecular Science, Graduate School of Science, Osaka University. 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Forefront
Research Center for Fundamental Sciences, Osaka University. 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Shunsuke Murayama
- Graduate
School of Organic Materials Engineering, Yamagata University. 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Yusei Fujiwara
- Department
of Mechanical Engineering, Osaka Institute
of Technology.5-16-1 Omiya, Asahi-ku, Osaka 535-8585, Japan
| | - Motofumi Osaki
- Department
of Macromolecular Science, Graduate School of Science, Osaka University. 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Forefront
Research Center for Fundamental Sciences, Osaka University. 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Tomohiro Suzuki
- Kanagawa
Technical Center, Yushiro Chemical Industry
Co., Ltd. 1580 Tabata, Samukawa-machi, Koza-gun, Kanagawa 253-0193, Japan
| | - Hidenori Shirakawa
- Kanagawa
Technical Center, Yushiro Chemical Industry
Co., Ltd. 1580 Tabata, Samukawa-machi, Koza-gun, Kanagawa 253-0193, Japan
| | - Yujiro Kitamura
- Kanagawa
Technical Center, Yushiro Chemical Industry
Co., Ltd. 1580 Tabata, Samukawa-machi, Koza-gun, Kanagawa 253-0193, Japan
| | - Hiroaki Takahashi
- Kanagawa
Technical Center, Yushiro Chemical Industry
Co., Ltd. 1580 Tabata, Samukawa-machi, Koza-gun, Kanagawa 253-0193, Japan
| | - Yasumasa Ohashi
- Kanagawa
Technical Center, Yushiro Chemical Industry
Co., Ltd. 1580 Tabata, Samukawa-machi, Koza-gun, Kanagawa 253-0193, Japan
| | - Seiji Obata
- Research
Core for Interdisciplinary Sciences, Okayama
University.3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Akira Harada
- SANKEN
(The Institute of Scientific and Industrial Research), Osaka University. 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Yuka Ikemoto
- Japan Synchrotron Radiation Research Institute. 1-1-1 Kouto, Sayo-gun, Hyogo 679-5198, Japan
| | - Yuta Nishina
- Research
Core for Interdisciplinary Sciences, Okayama
University.3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
- Graduate
School of Natural Science and Technology, Okayama University. 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Yasutomo Uetsuji
- Department
of Mechanical Engineering, Osaka Institute
of Technology.5-16-1 Omiya, Asahi-ku, Osaka 535-8585, Japan
| | - Go Matsuba
- Graduate
School of Organic Materials Engineering, Yamagata University. 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Yoshinori Takashima
- Department
of Macromolecular Science, Graduate School of Science, Osaka University. 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Forefront
Research Center for Fundamental Sciences, Osaka University. 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Innovative
Catalysis Science Division, Institute for Open and Transdisciplinary
Research Initiatives (ICS-OTRI), Osaka University. 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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Park J, Sasaki Y, Ishii Y, Murayama S, Ohshiro K, Nishiura K, Ikura R, Yamaguchi H, Harada A, Matsuba G, Washizu H, Minami T, Takashima Y. Leaf-Inspired Host-Guest Complexation-Dictating Supramolecular Gas Sensors. ACS Appl Mater Interfaces 2023; 15:39777-39785. [PMID: 37565809 DOI: 10.1021/acsami.3c04395] [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] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
We report unique conductive leaf-inspired (in particular, stomata-inspired) supramolecular gas sensors in which acetylated cyclodextrin derivatives rule the electric output. The gas sensors consist of polymers bearing acetylated cyclodextrin, adamantane, and carbon black. Host-guest complexes between acetylated cyclodextrin and adamantane corresponding to the closed stomata realize a flexible polymeric matrix. Effective recombination of the cross-links contributes to the robustness. As gas sensors, the supramolecular materials detect ammonia as well as various other gases at 1 ppm in 10 min. The free acetylated cyclodextrin corresponding to open stomata recognized the guest gases to alter the electric resistivity. Interestingly, the conductive device failed to detect ammonia gases at all without acetylated cyclodextrin. The molecular recognition was studied by molecular dynamics simulations. The gas molecules existed stably in the cavity of free acetylated cyclodextrin. These findings show the potential for developing wearable gas sensors.
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Affiliation(s)
- Junsu Park
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
- Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Yui Sasaki
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Yoshiki Ishii
- Graduate School of Information Science, University of Hyogo, 7-1-28 minatojima-minamimachi, Chuo, Kobe, Hyogo 650-0047, Japan
| | - Shunsuke Murayama
- Graduate School of Organic Materials Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Kohei Ohshiro
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Kengo Nishiura
- Graduate School of Organic Materials Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Ryohei Ikura
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
- Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Hiroyasu Yamaguchi
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
- Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Akira Harada
- Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Go Matsuba
- Graduate School of Organic Materials Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Hitoshi Washizu
- Graduate School of Information Science, University of Hyogo, 7-1-28 minatojima-minamimachi, Chuo, Kobe, Hyogo 650-0047, Japan
| | - Tsuyoshi Minami
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Yoshinori Takashima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
- Institute for Advanced Co-Creation Studies, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
- Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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7
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Park J, Shimizu Y, Zhou X, Ikura R, Matsuba G, Takashima Y. Water-Content-Dependent Switching of the Bending Behavior of Photoresponsive Hydrogels Composed of Hydrophilic Acrylamide-Based Main Chains and Hydrophobic Azobenzene. Gels 2023; 9:658. [PMID: 37623113 PMCID: PMC10453818 DOI: 10.3390/gels9080658] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/07/2023] [Accepted: 08/12/2023] [Indexed: 08/26/2023] Open
Abstract
Photoresponsiveness is a promising characteristic of stimulus-responsive materials. Photoresponsiveness can be achieved by incorporating photoresponsive molecules into polymeric materials. In addition, multiple-stimuli-responsive materials have attracted scientists' interest. Among the numerous multiple-stimuli-responsive materials, moisture- and photoresponsive materials are the focus of this report. These stimuli-responsive materials responded to the stimuli synergistically or orthogonally. Unlike most stimulus-responsive materials utilizing moisture and light as stimuli, the materials studied herein switch their photoresponsiveness in the presence of moisture. Appropriate copolymers consisting of hydrophilic acrylamide-based monomers for the main chain and hydrophobic azobenzene moieties switched their bending behaviors at 6-9 wt% water contents. At water contents lower than 6 wt%, the polymeric materials bent away from the light source, while they bent toward the light source at water contents higher than 10 wt%. At a low water content, the bending behaviors can be described on the molecular scale. At a high water content, the bending behavior requires consideration of the phase scale, not only the molecular scale. By controlling the balance between hydrophilicity and hydrophobicity, the switching behavior was achieved. This switching behavior may inspire additional strategies for the application of polymeric material as actuators.
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Affiliation(s)
- Junsu Park
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka 560-0043, Osaka, Japan (R.I.)
- Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka 560-0043, Osaka, Japan
| | - Yuki Shimizu
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka 560-0043, Osaka, Japan (R.I.)
| | - Xin Zhou
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka 560-0043, Osaka, Japan (R.I.)
| | - Ryohei Ikura
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka 560-0043, Osaka, Japan (R.I.)
- Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka 560-0043, Osaka, Japan
| | - Go Matsuba
- Graduate School of Organic Materials Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Yamagata, Japan;
| | - Yoshinori Takashima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka 560-0043, Osaka, Japan (R.I.)
- Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka 560-0043, Osaka, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-1 Yamadaoka, Suita 565-0871, Osaka, Japan
- Institute for Advanced Co-Creation Studies, Osaka University, 1-1 Yamadaoka, Suita 565-0871, Osaka, Japan
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8
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Nie Y, Zhao Y, Matsuba G, Hu W. Shish-kebab crystallites initiated by shear fracture in bulk polymers: 2. Crystallization on shearing. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125909] [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: 03/31/2023]
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9
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Vao-soongnern V, Sukhonthamethirat N, Rueangsri K, Sirirak K, Matsuba G. Molecular simulation of the structural formation of mono- and bidisperse polyethylene upon cooling from the melts. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121434] [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: 02/12/2023]
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10
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Nakamura Y, Yashiro K, Matsuba G, Wang Y, Mizutani G, Ono M, Bao J. The relationship between the fine structure of amylopectin and the type of crystalline allomorph of starch granules in rice endosperm. Cereal Chem 2023. [DOI: 10.1002/cche.10649] [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: 02/04/2023]
Affiliation(s)
- Yasunori Nakamura
- Starch Technologies Co., Ltd.Akita Prefectural University, Shimoshinjo‐NakanoAkita‐city, Akita010‐0195Japan
- Faculty of Bioresource SciencesAkita Prefectural University, Shimoshinjo‐NakanoAkita‐city, Akita010‐0195Japan
| | - Kazuki Yashiro
- Graduate School of Organic Materials EngineeringYamagata University4‐3‐16 Jonan, YonezawaYamagata992‐8510Japan
| | - Go Matsuba
- Graduate School of Organic Materials EngineeringYamagata University4‐3‐16 Jonan, YonezawaYamagata992‐8510Japan
| | - Yifei Wang
- School of Materials Science, Japan Advanced Institute of Science and Technology1‐1 Asahidai, NomiIshikawa923‐1292Japan
| | - Goro Mizutani
- School of Materials Science, Japan Advanced Institute of Science and Technology1‐1 Asahidai, NomiIshikawa923‐1292Japan
| | - Masami Ono
- Starch Technologies Co., Ltd.Akita Prefectural University, Shimoshinjo‐NakanoAkita‐city, Akita010‐0195Japan
| | - Jinsong Bao
- Institute of Nuclear Agricultural SciencesZhejiang UniversityHangzhou310058China
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11
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Konishi S, Park J, Urakawa O, Osaki M, Yamaguchi H, Harada A, Inoue T, Matsuba G, Takashima Y. Multi-energy dissipation mechanisms in supramolecular hydrogels with fast and slow relaxation modes. Soft Matter 2022; 18:7369-7379. [PMID: 36124981 DOI: 10.1039/d2sm00735e] [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: 06/15/2023]
Abstract
Reversible cross-links by non-covalent bonds have been widely used to produce supramolecular hydrogels that are both tough and functional. While various supramolecular hydrogels with several kinds of reversible cross-links have been designed for many years, a universal design that would allow control of mechanical and functional properties remains unavailable. The physical properties of reversible cross-links are usually quantified by thermodynamics, dynamics, and bond energies. Herein, we investigated the relationship between the molecular mobility and mechanical toughness of supramolecular hydrogels consisting of two kinetically distinct reversible cross-links via host-guest interactions. The molecular mobility was quantified as the second-order average relaxation time (〈τ〉w) of the reversible cross-links. We discovered that hydrogels combining fast (〈τ〉w = 1.8 or 18 s) and slowly (〈τ〉w = 6.6 × 103 or 9.5 × 103 s) reversible cross-links showed increased toughness compared to hydrogels with only one type of cross-link because relaxation processes in the former occurred with wide timescales.
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Affiliation(s)
- Subaru Konishi
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
| | - Junsu Park
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
- Forefront Research Center, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Osamu Urakawa
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
| | - Motofumi Osaki
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
- Forefront Research Center, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Hiroyasu Yamaguchi
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
- Forefront Research Center, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
- Institute for Open and Transdisciplinary Research Initiatives, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Akira Harada
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Tadashi Inoue
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
- Forefront Research Center, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Go Matsuba
- Graduate School of Organic Materials Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan.
| | - Yoshinori Takashima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
- Forefront Research Center, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
- Institute for Open and Transdisciplinary Research Initiatives, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
- Institute for Advanced Co-Creation Studies, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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12
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Jin C, Park J, Shirakawa H, Osaki M, Ikemoto Y, Yamaguchi H, Takahashi H, Ohashi Y, Harada A, Matsuba G, Takashima Y. Synergetic improvement in the mechanical properties of polyurethanes with movable crosslinking and hydrogen bonds. Soft Matter 2022; 18:5027-5036. [PMID: 35695164 DOI: 10.1039/d2sm00408a] [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: 06/15/2023]
Abstract
Polyurethane (PU) materials with movable crosslinking were prepared by a typical two-step synthetic process using an acetylated γ-cyclodextrin (TAcγCD) diol compound. The soft segment of PU is polytetrahydrofuran (PTHF), and the hard segment consists of hexamethylene diisocyanate (HDI) and 1,3-propylene glycol (POD). The synthesized PU materials exhibited the typical mechanical characteristics of a movable crosslinking network, and the presence of hydrogen bonds from the urethane bonds resulted in a synergistic effect. Two kinds of noncovalent bond crosslinking increased the Young's modulus of the material without affecting its toughness. Fourier transform infrared spectroscopy and X-ray scattering measurements were performed to analyze the effect of introducing movable crosslinking on the internal hydrogen bond and the microphase separation structure of PU, and the results showed that the carbonyl groups on TAcγCD could form hydrogen bonds with the PU chains and that the introduction of movable crosslinking weakened the hydrogen bonds between the hard segments of PU. When stretched, the movable crosslinking of the PU materials suppressed the orientation of polymer chains (shish-kebab orientation) in the tensile direction. The mechanical properties of the movable crosslinked PU materials show promise for future application in the industrial field.
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Affiliation(s)
- Changming Jin
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.
| | - Junsu Park
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.
- Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Hidenori Shirakawa
- Kanagawa Technical Center, Yushiro Chemical Industry Co., Ltd., 1580 Tabata, Samukawa, Koza, Kanagawa, 253-0193, Japan
| | - Motofumi Osaki
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.
- Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Yuka Ikemoto
- Japan Synchrotron Radiation Research Institute (SPring-8) Kouto, Sayo, Hyogo, 679-5198, Japan
| | - Hiroyasu Yamaguchi
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.
- Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hiroaki Takahashi
- Kanagawa Technical Center, Yushiro Chemical Industry Co., Ltd., 1580 Tabata, Samukawa, Koza, Kanagawa, 253-0193, Japan
| | - Yasumasa Ohashi
- Kanagawa Technical Center, Yushiro Chemical Industry Co., Ltd., 1580 Tabata, Samukawa, Koza, Kanagawa, 253-0193, Japan
| | - Akira Harada
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Go Matsuba
- Graduate School of Organic Material Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan.
| | - Yoshinori Takashima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.
- Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
- Institute for Advanced Co-Creation Studies, Osaka University, 1-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
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13
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Nagayama K, Morris BA, Matsuba G, Nakata K. Cover Image, Volume 139, Issue 20. J Appl Polym Sci 2022. [DOI: 10.1002/app.51104] [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: 11/07/2022]
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14
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Nakamura Y, Kubo A, Ono M, Yashiro K, Matsuba G, Wang Y, Matsubara A, Mizutani G, Matsuki J, Kainuma K. Changes in fine structure of amylopectin and internal structures of starch granules in developing endosperms and culms caused by starch branching enzyme mutations of japonica rice. Plant Mol Biol 2022; 108:481-496. [PMID: 35099666 DOI: 10.1007/s11103-021-01237-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 07/26/2021] [Accepted: 12/21/2021] [Indexed: 06/14/2023]
Abstract
BEIIb plays a specific role in determining the structure of amylopectin in rice endosperm, whereas BEIIa plays the similar role in the culm where BEIIb is absent. Cereals have three types of starch branching enzymes (BEs), BEI, BEIIa, and BEIIb. It is widely known that BEIIb is specifically expressed in the endosperm and plays a distinct role in the structure of amylopectin because in its absence the amylopectin type changes to the amylose-extender-type (ae-type) or B-type from the wild-type or A-type and this causes the starch crystalline allomorph to the B-type from the wild-type A-type. This study aimed to clarify the role of BEIIa in the culm where BEIIb is not expressed, by using a be2a mutant in comparison with results with be2b and be1 mutants. The results showed that the amylopectin structure exhibited the B-type in the be2a culm compared with the A-type in the wild-type culm. The starch granules from the be2a culm also showed the B-type like allomorph when examined by X-ray diffraction analysis and optical sum frequency generation spectroscopy. Both amylopectin chain-length profile and starch crystalline properties were found to be the A-type at the very early stage of endosperm development at 4-6 days after pollination (DAP) even in the be2b mutant. All these results support a view that in the culm as well as in the endosperm at 4-6 DAP, BEIIa can play the role of BEIIb which has been well documented in maturing endosperm. The possible mechanism as to how BEIIa can play its role is discussed.
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Affiliation(s)
- Yasunori Nakamura
- Starch Technologies, Co., Ltd., Akita Prefectural University, Shimoshinjo-Nakano, Akita-City, Akita, 010-0195, Japan.
- Akita Natural Science Laboratory, 25-44 Oiwake-Nishi, Tennoh, Katagami, Akita, 010-0101, Japan.
- Faculty of Bioresource Sciences, Akita Prefectural University, Shimoshinjo-Nakano, Akita-City, Akita, 010-0195, Japan.
| | - Akiko Kubo
- Faculty of Bioresource Sciences, Akita Prefectural University, Shimoshinjo-Nakano, Akita-City, Akita, 010-0195, Japan
| | - Masami Ono
- Starch Technologies, Co., Ltd., Akita Prefectural University, Shimoshinjo-Nakano, Akita-City, Akita, 010-0195, Japan
- Faculty of Bioresource Sciences, Akita Prefectural University, Shimoshinjo-Nakano, Akita-City, Akita, 010-0195, Japan
| | - Kazuki Yashiro
- Graduate School of Organic Materials Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Go Matsuba
- Graduate School of Organic Materials Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Yifei Wang
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
| | - Akira Matsubara
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
| | - Goro Mizutani
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
| | - Junko Matsuki
- Food Research Institute, National Agriculture and Food Research Organization, 2-1-12 Kannondai, Tsukuba, Ibaraki, 305-8642, Japan
| | - Keiji Kainuma
- Science Academy of Tsukuba, 2-20-3 Takezono, Tsukuba, Ibaraki, 305-0032, Japan
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15
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Yue Y, Yokota Y, Matsuba G. Polyelectrolyte-Layered Hydrogels with Electrically Tunable Toughness, Viscoelasticity, Hysteresis, and Crack Resistance. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02137] [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: 11/29/2022]
Affiliation(s)
- Youfeng Yue
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8565, Japan
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi 332-0012, Japan
| | - Yoshiko Yokota
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8565, Japan
| | - Go Matsuba
- Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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16
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Nagayama K, Morris BA, Matsuba G, Nakata K. Influence of co‐neutralization by sodium and zinc on the ethylene ionomer structure and properties. J Appl Polym Sci 2022. [DOI: 10.1002/app.52126] [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: 11/09/2022]
Affiliation(s)
- Kei Nagayama
- Core R&D Analytical Science Dow Chemical Japan Limited Shinagawa‐ku Tokyo Japan
| | - Barry A. Morris
- Packaging & Specialty Plastics Performance Materials NA, Inc., an Affiliated Company of The Dow Chemical Company Wilmington Delaware USA
| | - Go Matsuba
- Graduate School of Organic Materials Engineering Yamagata University Yonezawa Yamagata Japan
| | - Kazuyuki Nakata
- Marketing Department Dow‐Mitsui Polychemicals Company, Ltd Minato‐ku Tokyo Japan
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17
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Whitaker DJ, Park J, Ueda C, Wu G, Harada A, Matsuba G, Takashima Y, Scherman OA. Water content and guest size dictate the mechanical properties of cyclodextrin mediated hydrogels. Polym Chem 2022. [DOI: 10.1039/d2py00769j] [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: 11/21/2022]
Abstract
Steric bulkiness and water content plays an important role in mechanical properties of supramolecular hydrogels consisting of host-guest complexation as cross-links. With low and high water contents, the network mobility and the kinetics of the cross-links become dominant to the mechanical properties, respectively.
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Affiliation(s)
- Daniel J. Whitaker
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
- Melville Laboratory for Polymer Synthesis, Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
| | - Junsu Park
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Chiharu Ueda
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Guanglu Wu
- Melville Laboratory for Polymer Synthesis, Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
| | - Akira Harada
- Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Go Matsuba
- Graduate School of Organic Materials Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Yoshinori Takashima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
- Institute for Advanced Co-Creation Studies, Osaka University, 1-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Forefront Research Center, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Oren A. Scherman
- Melville Laboratory for Polymer Synthesis, Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
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18
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Nagasaki A, Matsuba G, Ikemoto Y, Moriwaki T, Ohta N, Osaka K. Analysis of the sol and gel structures of potato starch over a wide spatial scale. Food Sci Nutr 2021; 9:4916-4926. [PMID: 34532003 PMCID: PMC8441370 DOI: 10.1002/fsn3.2441] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 02/01/2021] [Revised: 06/01/2021] [Accepted: 06/11/2021] [Indexed: 11/30/2022] Open
Abstract
We analyzed edible potato starch and observed the interaction between its granular structure and water molecules. We studied the changes caused by gelatinization during heating and stirring using microscopy, micro-FT-IR spectroscopy, and X-ray scattering techniques. A wide range of spatial scales was revealed using these various techniques. The rate of gelatinization varied significantly and was dependent on the starch concentration. The process of adsorption of water on starch molecules was studied using the humidity-controlled FT-IR spectroscopy technique. Furthermore, by comparing the X-ray scattering profiles of dry and wet granules, the 9-nm repeat "cluster" structure was studied. A gradual collapse of the granules occurred during the processes of heating and stirring. A clustered smectic structure and a smectic-like structure were observed in the opaque gel after gelatinization. Upon further heating, a transparent gel was obtained after the melting of the cluster.
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Affiliation(s)
- Akane Nagasaki
- Graduate School of Organic Materials EngineeringYamagata UniversityYonezawaJapan
| | - Go Matsuba
- Graduate School of Organic Materials EngineeringYamagata UniversityYonezawaJapan
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19
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Nakamura Y, Ono M, Hatta T, Kainuma K, Yashiro K, Matsuba G, Matsubara A, Miyazato A, Mizutani G. Effects of BEIIb-Deficiency on the Cluster Structure of Amylopectin and the Internal Structure of Starch Granules in Endosperm and Culm of Japonica-Type Rice. Front Plant Sci 2020; 11:571346. [PMID: 33312184 DOI: 10.3389/fpls.2020.571346.ecollection] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 10/29/2020] [Indexed: 05/24/2023]
Abstract
It is known that one of starch branching enzyme (BE) isoforms, BEIIb, plays a specific role not only in the synthesis of distinct amylopectin cluster structure, but also in the formation of the internal structure of starch granules in rice endosperm because in its absence the starch crystalline polymorph changes to the B-type from the typical A-type found in the wild-type (WT) cereal endosperm starch granules. In the present study, to examine the contribution of BEIIb to the amylopectin cluster structure, the chain-length distributions of amylopectin and its phosphorylase-limit dextrins (Φ-LD) from endosperm and culm of a null be2b mutant called amylose-extender (ae) mutant line, EM10, were compared with those of its WT cultivar, Kinmaze, of japonica rice. The results strongly suggest that BEIIb specifically formed new short chains whose branch points were localized in the basal part of the crystalline lamellae and presumably in the intermediate between the crystalline and amorphous lamellae of amylopectin clusters in the WT endosperm, whereas in its absence branch points which were mainly formed by BEI were only located in the amorphous lamellae of amylopectin. These differences in the cluster structure of amylopectin between Kinmaze and EM10 endosperm were considered to be responsible for the differences in the A-type and B-type crystalline structures of starch granules between Kinmaze and EM10, respectively. The changes in internal structure of starch granules caused by BEIIb were analyzed by wide angle X-ray diffraction, small-angle X-ray scattering, solid state 13C NMR, and optical sum frequency generation spectroscopy. It was noted that the size the amylopectin cluster in ae endosperm (approximately 8.24 nm) was significantly smaller than that in WT endosperm (approximately 8.81 nm). Based on the present results, we proposed a model for the cluster structure of amylopectin in WT and ae mutant of rice endosperm. We also hypothesized the role of BEIIa in amylopectin biosynthesis in culm where BEIIb was not expressed and instead BEIIa was the major BE component in WT of rice.
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Affiliation(s)
- Yasunori Nakamura
- Starch Technologies, Co., Ltd., Akita Prefectural University, Akita, Japan
- Akita Natural Science Laboratory, Katagami, Japan
| | - Masami Ono
- Akita Natural Science Laboratory, Katagami, Japan
| | - Tamao Hatta
- Faculty of Risk and Crisis Management, Chiba Institute of Science, Choshi, Japan
| | | | - Kazuki Yashiro
- Graduate School of Organic Materials Science, Yamagata University, Yonezawa, Japan
| | - Go Matsuba
- Graduate School of Organic Materials Science, Yamagata University, Yonezawa, Japan
| | - Akira Matsubara
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Japan
| | - Akio Miyazato
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Japan
| | - Goro Mizutani
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Japan
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20
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Park J, Murayama S, Osaki M, Yamaguchi H, Harada A, Matsuba G, Takashima Y. Extremely Rapid Self-Healable and Recyclable Supramolecular Materials through Planetary Ball Milling and Host-Guest Interactions. Adv Mater 2020; 32:e2002008. [PMID: 32844527 DOI: 10.1002/adma.202002008] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 07/21/2020] [Indexed: 06/11/2023]
Abstract
The host-guest interaction as noncovalent bonds can make polymeric materials tough and flexible based on the reversibility property, which is a promising approach to extend the lifetime of polymeric materials. Supramolecular materials with cyclodextrin and adamantane are prepared by mixing host polymers and guest polymers by planetary ball milling. The toughness of the supramolecular materials prepared by ball milling is approximately 2 to 5 times higher than that of supramolecular materials prepared by casting, which is the conventional method. The materials maintain their mechanical properties during repeated ball milling treatments. They are also applicable as self-healable bulk materials and coatings, and they retain the transparency of the substrate. Moreover, fractured pieces of the materials can be re-adhered within 10 min. Dynamic mechanical analysis, thermal property measurements, small-angle X-ray scattering, and microscopy observations reveal these behaviors in detail. Scars formed on the coating disappear within a few seconds at 60 °C. At the same time, the coating shows scratch resistance due to its good mechanical properties. The ball milling method mixes the host polymer and guest polymer at the nano level to achieve the self-healing and recycling properties.
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Affiliation(s)
- Junsu Park
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
| | - Shunsuke Murayama
- Graduate School of Organic Material Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Motofumi Osaki
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
- Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
| | - Hiroyasu Yamaguchi
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
- Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
| | - Akira Harada
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Go Matsuba
- Graduate School of Organic Material Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Yoshinori Takashima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
- Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
- Institute for Advanced Co-Creation Studies, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan
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21
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Morita A, Matsuba G, Fujimoto M. Evaluation of hydrophilic cellulose nanofiber dispersions in a hydrophobic isotactic polypropylene composite. J Appl Polym Sci 2020. [DOI: 10.1002/app.49896] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Akitoshi Morita
- Graduate School of Organic Materials Engineering Yamagata University Yamagata Japan
| | - Go Matsuba
- Graduate School of Organic Materials Engineering Yamagata University Yamagata Japan
| | - Megumi Fujimoto
- Department of Environmental Quality Assurance Lion Idemitsu Composites, Co. Ltd. Chiba Japan
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22
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Nakamura Y, Ono M, Hatta T, Kainuma K, Yashiro K, Matsuba G, Matsubara A, Miyazato A, Mizutani G. Effects of BEIIb-Deficiency on the Cluster Structure of Amylopectin and the Internal Structure of Starch Granules in Endosperm and Culm of Japonica-Type Rice. Front Plant Sci 2020; 11:571346. [PMID: 33312184 PMCID: PMC7704622 DOI: 10.3389/fpls.2020.571346] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 10/29/2020] [Indexed: 05/04/2023]
Abstract
It is known that one of starch branching enzyme (BE) isoforms, BEIIb, plays a specific role not only in the synthesis of distinct amylopectin cluster structure, but also in the formation of the internal structure of starch granules in rice endosperm because in its absence the starch crystalline polymorph changes to the B-type from the typical A-type found in the wild-type (WT) cereal endosperm starch granules. In the present study, to examine the contribution of BEIIb to the amylopectin cluster structure, the chain-length distributions of amylopectin and its phosphorylase-limit dextrins (Φ-LD) from endosperm and culm of a null be2b mutant called amylose-extender (ae) mutant line, EM10, were compared with those of its WT cultivar, Kinmaze, of japonica rice. The results strongly suggest that BEIIb specifically formed new short chains whose branch points were localized in the basal part of the crystalline lamellae and presumably in the intermediate between the crystalline and amorphous lamellae of amylopectin clusters in the WT endosperm, whereas in its absence branch points which were mainly formed by BEI were only located in the amorphous lamellae of amylopectin. These differences in the cluster structure of amylopectin between Kinmaze and EM10 endosperm were considered to be responsible for the differences in the A-type and B-type crystalline structures of starch granules between Kinmaze and EM10, respectively. The changes in internal structure of starch granules caused by BEIIb were analyzed by wide angle X-ray diffraction, small-angle X-ray scattering, solid state 13C NMR, and optical sum frequency generation spectroscopy. It was noted that the size the amylopectin cluster in ae endosperm (approximately 8.24 nm) was significantly smaller than that in WT endosperm (approximately 8.81 nm). Based on the present results, we proposed a model for the cluster structure of amylopectin in WT and ae mutant of rice endosperm. We also hypothesized the role of BEIIa in amylopectin biosynthesis in culm where BEIIb was not expressed and instead BEIIa was the major BE component in WT of rice.
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Affiliation(s)
- Yasunori Nakamura
- Starch Technologies, Co., Ltd., Akita Prefectural University, Akita, Japan
- Akita Natural Science Laboratory, Katagami, Japan
- *Correspondence: Yasunori Nakamura,
| | - Masami Ono
- Akita Natural Science Laboratory, Katagami, Japan
| | - Tamao Hatta
- Faculty of Risk and Crisis Management, Chiba Institute of Science, Choshi, Japan
| | | | - Kazuki Yashiro
- Graduate School of Organic Materials Science, Yamagata University, Yonezawa, Japan
| | - Go Matsuba
- Graduate School of Organic Materials Science, Yamagata University, Yonezawa, Japan
| | - Akira Matsubara
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Japan
| | - Akio Miyazato
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Japan
| | - Goro Mizutani
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Japan
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23
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Jikei M, Sato A, Ha LT, Takeda M, Matsumoto K, Sugimoto M, Sato H, Matsuba G. Synthesis and properties of long-chain-branched poly(aryl ether sulfone)-poly(tetrahydrofuran) multiblock copolymers. Polym J 2019. [DOI: 10.1038/s41428-019-0261-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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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24
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Sakurai M, Matsuba G, Sotoyama K, Nishida K, Kanaya T, Takata S. Molecular weight component dependence of shish‐kebab structure of polyethylene blends with X‐ray and neutron scattering measurements covering a wide spatial scale. Polymer Crystallization 2019. [DOI: 10.1002/pcr2.10034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Masayuki Sakurai
- Graduate School of Science and EngineeringYamagata University Yonezawa, Yamagata Japan
| | - Go Matsuba
- Graduate School of Science and EngineeringYamagata University Yonezawa, Yamagata Japan
- Graduate School of Organic Materials ScienceYamagata University Yonezawa, Yamagata Japan
| | - Keisuke Sotoyama
- Graduate School of Organic Materials ScienceYamagata University Yonezawa, Yamagata Japan
| | - Koji Nishida
- Graduate School of EngineeringKyoto University Kyoto Japan
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25
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Li K, Matsuba G. Effects of relaxation time and zero shear viscosity on structural evolution of linear low-density polyethylene in shear flow. J Appl Polym Sci 2018. [DOI: 10.1002/app.46053] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Go Matsuba
- Graduate School of Science and Engineering; Yamagata University; 4-3-16 Jonan, Yonezawa, Yamagata 992-8510 Japan
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26
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Nyuui T, Matsuba G, Sato S, Nagai K, Fujimori A. Correlation between gas transport properties and the morphology/dynamics of crystalline fluorinated copolymer membranes. J Appl Polym Sci 2018. [DOI: 10.1002/app.45665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tatsuki Nyuui
- Graduate School of Organic Material System; Yamagata University; Jonan 4-3-16, Yonezawa Yamagata 992-8510 Japan
| | - Go Matsuba
- Graduate School of Organic Material System; Yamagata University; Jonan 4-3-16, Yonezawa Yamagata 992-8510 Japan
| | - Shuichi Sato
- Department of Applied Chemistry; Meiji University; 1-1-1 Higashi-mita, Tama-ku Kawasaki Kanagawa 214-8571 Japan
- Department of Electrical and Electronic Engineering; Tokyo Denki University; 5 Senju-Asahi-cho, Adachi-ku Tokyo 120-8551 Japan
| | - Kazukiyo Nagai
- Department of Applied Chemistry; Meiji University; 1-1-1 Higashi-mita, Tama-ku Kawasaki Kanagawa 214-8571 Japan
| | - Atsuhiro Fujimori
- Graduate School of Science and Engineering; Saitama University; 255 Shimo-okubo, Sakura-ku Saitama 338-8570 Japan
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27
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Affiliation(s)
- Yijing Nie
- Department of Polymer
Science and Engineering, State Key Laboratory of Coordination Chemistry,
School of Chemistry and Chemical Engineering, Nanjing University, 210093 Nanjing, China
- Institute of Polymer
Materials, School of Materials Science and Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Yunfeng Zhao
- Department of Polymer
Science and Engineering, Faculty of Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Go Matsuba
- Department of Polymer
Science and Engineering, Faculty of Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Wenbing Hu
- Department of Polymer
Science and Engineering, State Key Laboratory of Coordination Chemistry,
School of Chemistry and Chemical Engineering, Nanjing University, 210093 Nanjing, China
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28
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Ohisa S, Pu YJ, Yamada NL, Matsuba G, Kido J. Influence of solution- and thermal-annealing processes on the sub-nanometer-ordered organic-organic interface structure of organic light-emitting devices. Nanoscale 2017; 9:25-30. [PMID: 27808316 DOI: 10.1039/c6nr06654b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Solution- and thermal-annealing processed organic-organic interface structures were investigated by neutron reflectometry. We revealed the true picture of interfaces, a polymer hole-transporting layer - a small molecule light-emitting layer - a small molecule electron-transporting layer, and discussed influences of those interface structures on organic light-emitting devices.
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Affiliation(s)
- S Ohisa
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, Yonezawa, Yamagata, 992-8510 Japan.
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29
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Henmi K, Sato H, Matsuba G, Tsuji H, Nishida K, Kanaya T, Toyohara K, Oda A, Endou K. Isothermal Crystallization Process of Poly(l-lactic acid)/Poly(d-lactic acid) Blends after Rapid Cooling from the Melt. ACS Omega 2016; 1:476-482. [PMID: 31457140 PMCID: PMC6640745 DOI: 10.1021/acsomega.6b00098] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Accepted: 09/09/2016] [Indexed: 06/10/2023]
Abstract
We observed the crystallization process in poly(l-lactic acid) (PLLA) and poly(d-lactic acid) (PDLA) blends using in situ simultaneous small- and wide-angle X-ray scattering measurements with a high-speed temperature control cell. In situ X-ray scattering measurements revealed that density fluctuations larger than the long spacing periods grew during crystallization above 130 °C. In particular, the time evolution of the density fluctuations has a strong dependence on the crystallization temperature. The density fluctuations will promote the crystal nucleation and growth processes of the stereocomplex and increase with increasing crystallization temperature, which is strongly correlated with the complexation of PLLA and PDLA chains. On the other hand, below 120 °C, the kinetics of stereocomplex formation might be hindered by the decreased mobility, and no density fluctuations were observed in the case of homo crystal growth of PLLA or PDLA.
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Affiliation(s)
- Kouta Henmi
- Department
of Polymer Science and Engineering, Yamagata
University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Hiroaki Sato
- Department
of Polymer Science and Engineering, Yamagata
University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Go Matsuba
- Department
of Polymer Science and Engineering, Yamagata
University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Hideto Tsuji
- Department
of Environmental and Life Science, Toyohashi
University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
| | - Koji Nishida
- Institute
for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto-fu 611-0011, Japan
| | - Toshiji Kanaya
- Institute
for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto-fu 611-0011, Japan
- J-PARC,
Material and Life Science Division, Institute of Material Structure
Science, High Energy Accelerator Research
Organization (KEK), 203-1
Shirakata, Tokai, Naka, Ibaraki 319-1106, Japan
| | | | - Akimichi Oda
- Teijin
Limited, 2-1 Hinode-cho, Iwakuni, Yamaguchi 740-8511, Japan
| | - Kou Endou
- Teijin
Limited, 2-1 Hinode-cho, Iwakuni, Yamaguchi 740-8511, Japan
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30
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Ohisa S, Pu YJ, Yamada NL, Matsuba G, Kido J. Molecular Interdiffusion between Stacked Layers by Solution and Thermal Annealing Processes in Organic Light Emitting Devices. ACS Appl Mater Interfaces 2015; 7:20779-20785. [PMID: 26331696 DOI: 10.1021/acsami.5b05818] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In organic light emitting devices (OLEDs), interfacial structures between multilayers have large impacts on the characteristics of OLEDs. Herein, we succeeded in revealing the interdiffusion in solution processed and thermal annealed OLEDs by neutron reflectometry. We investigated interfaces between a polymer under layer and small molecules upper layer. The small molecules diffused into the swollen polymer layer during the interfacial formation by the solution process, but the polymer did not diffuse into the small molecules layer. At temperatures close to the glass transition temperatures of the materials, asymmetric molecular diffusion was observed. We elucidated the effects of the interdiffusion on the characteristics of OLEDs. Partially mixing the interface improved the current efficiencies due to suppressed triplet-polaron quenching at the interface. Controlling and understanding the interfacial structures of the miultilayers will be more important to improve the OLED characteristics.
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Affiliation(s)
- Satoru Ohisa
- Department of Organic Device Engineering, Yamagata University , 4-3-16 Johnan, Yonezawa, Yamagata 992-8510, Japan
| | - Yong-Jin Pu
- Department of Organic Device Engineering, Yamagata University , 4-3-16 Johnan, Yonezawa, Yamagata 992-8510, Japan
| | - Norifumi L Yamada
- Institute of Material Structure Science, High-Energy Accelerator Research Organization (KEK) , 203-1 Shirakata, Tokai, Naka 319-1106, Japan
| | - Go Matsuba
- Department of Polymer Science and Engineering, Yamagata University , 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Junji Kido
- Department of Organic Device Engineering, Yamagata University , 4-3-16 Johnan, Yonezawa, Yamagata 992-8510, Japan
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31
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Sato S, Nyuui T, Matsuba G, Nagai K. Correlation between interlamellar amorphous structure and gas permeability in poly(lactic acid) films. J Appl Polym Sci 2014. [DOI: 10.1002/app.40626] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shuichi Sato
- Department of Applied Chemistry; Meiji University; Tama-ku Kawasaki-shi Kanagawa 214-8571 Japan
- Department of Electrical and Electronic Engineering; Tokyo Denki University; Adachi-ku Tokyo 120-8551 Japan
| | - Tatsuki Nyuui
- Department of Polymer Science and Engineering; Yamagata University; Yonezawa Yamagata 992-8510 Japan
| | - Go Matsuba
- Department of Polymer Science and Engineering; Yamagata University; Yonezawa Yamagata 992-8510 Japan
| | - Kazukiyo Nagai
- Department of Applied Chemistry; Meiji University; Tama-ku Kawasaki-shi Kanagawa 214-8571 Japan
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32
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Hemmi K, Matsuba G, Tsuji H, Kawai T, Kanaya T, Toyohara K, Oda A, Endou K. Precursors in stereo-complex crystals of poly(L-lactic acid)/poly(D-lactic acid) blends under shear flow. J Appl Crystallogr 2014. [DOI: 10.1107/s1600576713031907] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
To improve the mechanical and the thermal performance of poly(lactic acid) materials, this work focuses on the formation of stereo-complex crystals by blending poly(L-lactic acid) (PLLA) with poly(D-lactic acid) (PDLA). The resulting structure was analyzed using time-resolvedin situX-ray scattering, optical microscopy, differential scanning calorimetry and viscoelastic measurements. The objective of this study is to investigate the effect of shear flow imposed prior to crystallization on higher-order structure formation and acceleration of stereo-complex crystal growth of PLLA and PDLA blends using a wide spatial scale analysis and viscoelastic measurements. Density fluctuations of 100 nm scale were observed prior to nucleation byin situsimultaneous wide- and small-angle X-ray scattering measurements. These density fluctuations grew with time and the intensity increased with increasing shear rate. Furthermore, the results revealed that the PLLA and PDLA chains were only partially interpenetrated; consequently, stereo-complex crystals could grow only in the mixed PLLA/PDLA phase. The correlation length of density fluctuation prior to nucleation was strongly dependent on the mixed phases.
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33
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Matsui I, Hamano T, Mikami S, Inoue K, Shimomura A, Nagasawa Y, Michigami T, Ohnishi T, Fujii N, Nakano C, Kusunoki Y, Kitamura H, Iwatani H, Takabatake Y, Kaimori JY, Matsuba G, Okoshi K, Kimura-Suda H, Tsubakihara Y, Rakugi H, Isaka Y. Retention of fetuin-A in renal tubular lumen protects the kidney from nephrocalcinosis in rats. Am J Physiol Renal Physiol 2013; 304:F751-60. [PMID: 23344571 DOI: 10.1152/ajprenal.00329.2012] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The serum glycoprotein fetuin-A is an important inhibitor of extraosseous calcification. The importance of fetuin-A has been confirmed in fetuin-A null mice, which develop widespread extraosseous calcification including the kidney. However, the mechanism how fetuin-A protects kidneys from nephrocalcinosis remains uncertain. Here, we demonstrate that intratubular fetuin-A plays a role in the prevention of nephrocalcinosis in the proximal tubules. Although normal rat kidney did not express mRNA for fetuin-A, we found punctate immunohistochemical staining of fetuin-A mainly in the S1 segment of the proximal tubules. The staining pattern suggested that fetuin-A passed through the slit diaphragm, traveled in the proximal tubular lumen, and was introduced into proximal tubular cells by megalin-mediated endocytosis. To test this hypothesis, we inhibited the function of megalin by intravenous injection of histidine-tagged soluble receptor-associated protein (His-sRAP), a megalin inhibitor. His-sRAP injection diminished fetuin-A staining in the proximal tubules and led to urinary excretion of fetuin-A. We further analyzed the role of fetuin-A in nephrocalcinosis. Continuous injection of parathyroid hormone (PTH) 1-34 induced nephrocalcinosis mainly in the proximal tubules in rats. His-sRAP retained fetuin-A in renal tubular lumen and thereby protected the kidneys of PTH-treated rats from calcification. Our findings suggest that tubular luminal fetuin-A works as a natural inhibitor against calcification in the proximal tubules under PTH-loaded condition.
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Affiliation(s)
- Isao Matsui
- Department of Geriatric Medicine and Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
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34
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Affiliation(s)
- Yunfeng Zhao
- Department of Polymer Science and
Engineering, Yamagata University, 4-3-16,
Jonan, Yonezawa, Yamagata
9928510, Japan
| | - Kouhei Hayasaka
- Department of Polymer Science and
Engineering, Yamagata University, 4-3-16,
Jonan, Yonezawa, Yamagata
9928510, Japan
| | - Go Matsuba
- Department of Polymer Science and
Engineering, Yamagata University, 4-3-16,
Jonan, Yonezawa, Yamagata
9928510, Japan
| | - Hiroshi Ito
- Department of Polymer Science and
Engineering, Yamagata University, 4-3-16,
Jonan, Yonezawa, Yamagata
9928510, Japan
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35
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Zhao Y, Matsuba G, Moriwaki T, Ikemoto Y, Ito H. Shear-induced conformational fluctuations of polystyrene probed by 2D infrared microspectroscopy. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.08.046] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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36
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Deng C, Fujiwara T, Polec I, Matsuba G, Jin L, Inoue R, Nishida K, Kanaya T. Precursor of Shish-Kebab in Atactic Polystyrene/Isotactic Polystyrene Blend above Nominal Melting Temperature. Macromolecules 2012. [DOI: 10.1021/ma300207f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cong Deng
- Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611-0011, Japan
- Analytical and Testing Center, Sichuan University, Chengdu 610065, P. R. China
| | - Tetsuaki Fujiwara
- Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611-0011, Japan
| | - Inga Polec
- Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611-0011, Japan
| | - Go Matsuba
- Department of Polymer Science
and Engineering, Faculty of Science and Engineering, Yamagata University, Yonezawa, Yamagata-ken 992-8510,
Japan
| | - Ling Jin
- Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611-0011, Japan
| | - Rintaro Inoue
- Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611-0011, Japan
| | - Koji Nishida
- Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611-0011, Japan
| | - Toshiji Kanaya
- Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611-0011, Japan
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37
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Nishida K, Okada K, Asakawa H, Matsuba G, Ito K, Kanaya T, Kaji K. In situ observations of the mesophase formation of isotactic polypropylene—A fast time-resolved X-ray diffraction study. Polym J 2011. [DOI: 10.1038/pj.2011.118] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [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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38
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Kawabata J, Matsuba G, Nishida K, Inoue R, Kanaya T. Melt memory effects on recrystallization of polyamide 6 revealed by depolarized light scattering and small-angle X-ray scattering. J Appl Polym Sci 2011. [DOI: 10.1002/app.34294] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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39
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Asakawa H, Nishida K, Matsuba G, Kanaya T, Ogawa H. Crystallization of isotactic polypropylene from mesomorphic phase: a constant heating rate study. ACTA ACUST UNITED AC 2011. [DOI: 10.1088/1742-6596/272/1/012024] [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: 11/12/2022]
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Igarashi N, Watanabe Y, Shinohara Y, Inoko Y, Matsuba G, Okuda H, Mori T, Ito K. Upgrade of the small angle X-ray scattering beamlines at the Photon Factory. ACTA ACUST UNITED AC 2011. [DOI: 10.1088/1742-6596/272/1/012026] [Citation(s) in RCA: 33] [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: 11/11/2022]
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Inoue R, Kawashima K, Matsui K, Kanaya T, Nishida K, Matsuba G, Hino M. Distributions of glass-transition temperature and thermal expansivity in multilayered polystyrene thin films studied by neutron reflectivity. Phys Rev E Stat Nonlin Soft Matter Phys 2011; 83:021801. [PMID: 21405853 DOI: 10.1103/physreve.83.021801] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2010] [Indexed: 05/26/2023]
Abstract
We performed neutron reflectivity measurements on multilayered polymer thin films consisting of alternatively stacked deuterated polystyrene (d-PS) and hydrogenated polystyrene (h-PS) layers ∼200 Å thick as a function of temperature covering the glass-transition temperature T(g), and we found a wide distribution of T(g) as well as a distribution of the thermal expansivity α within the thin films, implying the dynamic heterogeneity of the thin films along the depth direction. The reported anomalous film thickness dependences of T(g) and α were reasonably understood in terms of the distributions, showing that the surface mobile layer and the bottom hard interfacial layer are, respectively, responsible for the depressions of T(g) and α with decreasing film thickness. The molecular mobility in each layer is also discussed in relation to the distribution of T(g), based on the results on mutual diffusion at the layer interface.
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Affiliation(s)
- Rintaro Inoue
- Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611-0011, Japan
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Zhao Y, Matsuba G, Nishida K, Fujiwara T, Inoue R, Polec I, Deng C, Kanaya T. Relaxation of shish-kebab precursor in isotactic polystyrene after short-term shear flow. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/polb.22176] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Kawashima K, Inoue R, Kanaya T, Matsuba G, Nishida K, Hino M. Distribution of glass transition temperatureTgin a polymer thin film by neutron reflectivity. ACTA ACUST UNITED AC 2009. [DOI: 10.1088/1742-6596/184/1/012004] [Citation(s) in RCA: 12] [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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Rahman N, Kawai T, Matsuba G, Nishida K, Kanaya T, Watanabe H, Okamoto H, Kato M, Usuki A, Matsuda M, Nakajima K, Honma N. Effect of Polylactide Stereocomplex on the Crystallization Behavior of Poly(l-lactic acid). Macromolecules 2009. [DOI: 10.1021/ma900004d] [Citation(s) in RCA: 161] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nelly Rahman
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Takahiko Kawai
- Graduate School of Engineering, Gunma University, Ota, Gunma 373-0057, Japan
| | - Go Matsuba
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Koji Nishida
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Toshiji Kanaya
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Hiroshi Watanabe
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | | | - Makoto Kato
- Toyota Central R&D Labs Inc., Nagakute, Aichi 480-1192, Japan
| | - Arimitsu Usuki
- Toyota Central R&D Labs Inc., Nagakute, Aichi 480-1192, Japan
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Kubo JI, Rahman N, Takahashi N, Kawai T, Matsuba G, Nishida K, Kanaya T, Yamamoto M. Improvement of poly(vinyl alcohol) properties by the addition of magnesium nitrate. J Appl Polym Sci 2009. [DOI: 10.1002/app.29561] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [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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Ogawa H, Kanaya T, Nishida K, Matsuba G, Majewski JP, Watkins E. Time-resolved specular and off-specular neutron reflectivity measurements on deuterated polystyrene and poly(vinyl methyl ether) blend thin films during dewetting process. J Chem Phys 2009. [DOI: 10.1063/1.3224125] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nishida K, Ogawa H, Matsuba G, Konishi T, Kanaya T. A high-resolution small-angle light scattering instrument for soft matter studies. J Appl Crystallogr 2008. [DOI: 10.1107/s002188980801265x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [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
A small-angle light scattering (SALS) instrument with a high resolution at low angles and a high signal-to-noise ratio has been developed. Both a wide dynamic range and a wide scattering vector range are achieved using a two-dimensional array of complementary metal oxide semiconductor image sensors. These instrument characteristics have enabled us to obtain high-quality light scattering data from soft matter systems. This setup is especially well suited to studies of systems with a weak scattering power and/or a time-dependent structure evolution in a wide spatial range from submicrometre to submillimetre. An application of this instrument to a polyelectrolyte blend and an extremely thin blend film are reported.
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Affiliation(s)
- Takashi Konishi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611-0011, Japan
| | - Koji Nishida
- Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611-0011, Japan
| | - Go Matsuba
- Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611-0011, Japan
| | - Toshiji Kanaya
- Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611-0011, Japan
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