1
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Yokochi H, O’Neill RT, Abe T, Aoki D, Boulatov R, Otsuka H. Sacrificial Mechanical Bond is as Effective as a Sacrificial Covalent Bond in Increasing Cross-Linked Polymer Toughness. J Am Chem Soc 2023; 145:23794-23801. [PMID: 37851530 PMCID: PMC10623562 DOI: 10.1021/jacs.3c08595] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Indexed: 10/20/2023]
Abstract
Sacrificial chemical bonds have been used effectively to increase the toughness of elastomers because such bonds dissociate at forces significantly below the fracture limit of the primary load-bearing bonds, thereby dissipating local stress. This approach owes much of its success to the ability to adjust the threshold force at which the sacrificial bonds fail at the desired rate, for example, by selecting either covalent or noncovalent sacrificial bonds. Here, we report experimental and computational evidence that a mechanical bond, responsible for the structural integrity of a rotaxane or a catenane, increases the elastomer's fracture strain, stress, and energy as much as a covalent bond of comparable mechanochemical dissociation kinetics. We synthesized and studied 6 polyacrylates cross-linked by either difluorenylsuccinonitrile (DFSN), which is an established sacrificial mechanochromic moiety; a [2]rotaxane, whose stopper allows its wheel to dethread on the same subsecond time scale as DFSN dissociates when either is under tensile force of 1.5-2 nN; a structurally homologous [2]rotaxane with a much bulkier stopper that is stable at force >5.5 nN; similarly stoppered [3]rotaxanes containing DFSN in their axles; and a control polymer with aliphatic nonsacrificial cross-links. Our data suggest that mechanochemical dethreading of a rotaxane without failure of any covalent bonds may be an important, hitherto unrecognized, contributor to the toughness of some rotaxane-cross-linked polymers and that sacrificial mechanical bonds provide a mechanism to control material fracture behavior independently of the mechanochemical response of the covalent networks, due to their distinct relationships between structure and mechanochemical reactivity.
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Affiliation(s)
- Hirogi Yokochi
- Department
of Chemical Science and Engineering, Tokyo
Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Robert T. O’Neill
- Department
of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.
| | - Takumi Abe
- Department
of Chemical Science and Engineering, Tokyo
Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Daisuke Aoki
- Department
of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba-shi, Chiba 263-8522, Japan
| | - Roman Boulatov
- Department
of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.
| | - Hideyuki Otsuka
- Department
of Chemical Science and Engineering, Tokyo
Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
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2
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Sasaki Y, Nishizawa Y, Watanabe T, Kureha T, Uenishi K, Nakazono K, Takata T, Suzuki D. Nanoparticle-Based Tough Polymers with Crack-Propagation Resistance. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 37327130 DOI: 10.1021/acs.langmuir.3c01226] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Although thin elastomer films of polymer nanoparticles are regarded as environmentally friendly materials, the low mechanical strength of the films limits their use in various applications. In the present study, we investigated the fracture resistance of latex films composed of acrylic nanoparticles where a small quantity of a rotaxane crosslinker was introduced. In contrast to conventional nanoparticle-based elastomers, the latex films composed of the rotaxane-crosslinked nanoparticles exhibited unusual crack propagation behavior; the direction of crack propagation changed from a direction parallel to the crack to one perpendicular to the crack, resulting in an increase in tear resistance. These findings will help to broaden the scope of design of new types of tough polymers composed of environmentally friendly polymer nanoparticles.
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Affiliation(s)
- Yuma Sasaki
- Graduate School of Textile Science & Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
| | - Yuichiro Nishizawa
- Graduate School of Textile Science & Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
| | - Takumi Watanabe
- Graduate School of Textile Science & Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
| | - Takuma Kureha
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki 036-8561, Japan
| | - Kazuya Uenishi
- Yokohama Rubber Co., Ltd., 2-1 Oiwake, Hiratsuka, Kanagawa 254-8601, Japan
| | - Kazuko Nakazono
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Toshikazu Takata
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
- Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Daisuke Suzuki
- Graduate School of Textile Science & Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
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3
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Chen L, Sheng X, Li G, Huang F. Mechanically interlocked polymers based on rotaxanes. Chem Soc Rev 2022; 51:7046-7065. [PMID: 35852571 DOI: 10.1039/d2cs00202g] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The nature of mechanically interlocked molecules (MIMs) has continued to encourage researchers to design and construct a variety of high-performance materials. Introducing mechanically interlocked structures into polymers has led to novel polymeric materials, called mechanically interlocked polymers (MIPs). Rotaxane-based MIPs are an important class, where the mechanically interlocked characteristic retains a high degree of structural freedom and mobility of their components, such as the rotation and sliding motions of rotaxane units. Therefore, these MIP materials are known to possess a unique set of properties, including mechanical robustness, adaptability and responsiveness, which endow them with potential applications in many emerging fields, such as protective materials, intelligent actuators, and mechanisorption. In this review, we outline the synthetic strategies, structure-property relationships, and application explorations of various polyrotaxanes, including linear polyrotaxanes, polyrotaxane networks, and rotaxane dendrimers.
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Affiliation(s)
- Liya Chen
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
| | - Xinru Sheng
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
| | - Guangfeng Li
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China. .,ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, P. R. China.
| | - Feihe Huang
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China. .,ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, P. R. China. .,Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
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4
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Gauthier M, Waelès P, Coutrot F. Post-Synthetic Macrocyclization of Rotaxane Building Blocks. Chempluschem 2021; 87:e202100458. [PMID: 34811956 DOI: 10.1002/cplu.202100458] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/11/2021] [Indexed: 11/06/2022]
Abstract
Although not often encountered, cyclic interlocked molecules are appealing molecular targets because of their restrained tridimensional structure which is related to both the cyclic and interlocked shapes. Interlocked molecules such as rotaxane building blocks may be good candidates for post-synthetic intramolecular cyclization if the preservation of the mechanical bond ensures the interlocked architecture throughout the reaction. This is obviously the case if the modification does not involve the cleavage of either the macrocycle's main chain or the encircled part of the axle. However, among the post-synthetic reactions, the chemical linkage between two reactive sites belonging to embedded elements of rotaxanes still consists of an underexploited route to interlocked cyclic molecules. This Review lists the rare examples of macrocyclization through chemical connection between reactive sites belonging to a surrounding macrocycle and/or an encircled axle of interlocked rotaxanes.
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Affiliation(s)
- Maxime Gauthier
- Supramolecular Machines and Architectures Team, IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - Philip Waelès
- Supramolecular Machines and Architectures Team, IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - Frédéric Coutrot
- Supramolecular Machines and Architectures Team, IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
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5
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Synthesis, mechanical properties, and ionic conductivity of rotaxane cross-linked polymers. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Zhao M, Li C, Shan X, Han H, Zhao Q, Xie M, Chen J, Liao X. A Stretchable Pillararene-Containing Supramolecular Polymeric Material with Self-Healing Property. Molecules 2021; 26:2191. [PMID: 33920289 PMCID: PMC8070141 DOI: 10.3390/molecules26082191] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/05/2021] [Accepted: 04/07/2021] [Indexed: 12/03/2022] Open
Abstract
Constructing polymeric materials with stretchable and self-healing properties arise increasing interest in the field of tissue engineering, wearable electronics and soft actuators. Herein, a new type of supramolecular cross-linker was constructed through host-guest interaction between pillar[5]arene functionalized acrylate and pyridinium functionalized acrylate, which could form supramolecular polymeric material via photo-polymerization of n-butyl acrylate (BA). Such material exhibited excellent tensile properties, with maximum tensile strength of 3.4 MPa and strain of 3000%, respectively. Moreover, this material can effectively dissipate energy with the energy absorption efficiency of 93%, which could be applied in the field of energy absorbing materials. In addition, the material showed self-healing property after cut and responded to competitive guest.
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Affiliation(s)
- Meng Zhao
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China; (M.Z.); (C.L.); (X.S.); (H.H.); (Q.Z.); (M.X.)
| | - Changjun Li
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China; (M.Z.); (C.L.); (X.S.); (H.H.); (Q.Z.); (M.X.)
| | - Xiaotao Shan
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China; (M.Z.); (C.L.); (X.S.); (H.H.); (Q.Z.); (M.X.)
| | - Huijing Han
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China; (M.Z.); (C.L.); (X.S.); (H.H.); (Q.Z.); (M.X.)
| | - Qiuhua Zhao
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China; (M.Z.); (C.L.); (X.S.); (H.H.); (Q.Z.); (M.X.)
| | - Meiran Xie
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China; (M.Z.); (C.L.); (X.S.); (H.H.); (Q.Z.); (M.X.)
| | - Jianzhuang Chen
- School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaojuan Liao
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China; (M.Z.); (C.L.); (X.S.); (H.H.); (Q.Z.); (M.X.)
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7
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Xie ZH, Rong MZ, Zhang MQ, Liu D. Implementation of the Pulley Effect of Polyrotaxane in Transparent Bulk Polymer for Simultaneous Strengthening and Toughening. Macromol Rapid Commun 2020; 41:e2000371. [DOI: 10.1002/marc.202000371] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/01/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Zhen Hua Xie
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education GD HPPC Lab, School of Chemistry Sun Yat‐sen University Guangzhou 510275 P. R. China
| | - Min Zhi Rong
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education GD HPPC Lab, School of Chemistry Sun Yat‐sen University Guangzhou 510275 P. R. China
| | - Ming Qiu Zhang
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education GD HPPC Lab, School of Chemistry Sun Yat‐sen University Guangzhou 510275 P. R. China
| | - Dong Liu
- Key Laboratory of Neutron Physics and Institute of Nuclear Physics and Chemistry (INPC) China Academy of Engineering Physics (CAEP) Mianyang 621999 P. R. China
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8
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Tsuchiya H, Sinawang G, Asoh TA, Osaki M, Ikemoto Y, Higuchi Y, Yamaguchi H, Harada A, Uyama H, Takashima Y. Supramolecular Biocomposite Hydrogels Formed by Cellulose and Host-Guest Polymers Assisted by Calcium Ion Complexes. Biomacromolecules 2020; 21:3936-3944. [PMID: 32809809 DOI: 10.1021/acs.biomac.0c01095] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Hydrogels are biocompatible polymer networks; however, they have the disadvantage of having poor mechanical properties. Herein, the mechanical properties of host-guest hydrogels were increased by adding a filler and incorporating other noncovalent interactions. Cellulose was added as a filler to the hydrogels to afford a composite. Citric acid-modified cellulose (CAC) with many carboxyl groups was used instead of conventional cellulose. The preparation began with mixing an acrylamide-based αCD host polymer (p-αCD) and a dodecanoic acid guest polymer (p-AADA) to form supramolecular hydrogels (p-αCD/p-AADA). However, when CAC was directly added to p-αCD/p-AADA to form biocomposite hydrogels (p-αCD/p-AADA/CAC), it showed weaker mechanical properties than p-αCD/p-AADA itself. This was caused by the strong intramolecular hydrogen bonding (H-bonding) within the CAC, which prevented the CAC reinforcing p-αCD/p-AADA in p-αCD/p-AADA/CAC. Then, calcium chloride solution (CaCl2) was used to form calcium ion (Ca2+) complexes between the CAC and p-αCD/p-AADA. This approach successfully created supramolecular biocomposite hydrogels assisted by Ca2+ complexes (p-αCD/p-AADA/CAC/Ca2+) with improved mechanical properties relative to p-αCD/p-AADA hydrogels; the toughness was increased 6-fold, from 1 to 6 MJ/m3. The mechanical properties were improved because of the disruption of the intramolecular H-bonding within the CAC by Ca2+ and subsequent complex formation between the carboxyl groups of CAC and p-AADA. This mechanism is a new approach for improving the mechanical properties of hydrogels that can be broadly applied as biomaterials.
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Affiliation(s)
- Hinako Tsuchiya
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Garry Sinawang
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.,Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Taka-Aki Asoh
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Motofumi Osaki
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.,Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Yuka Ikemoto
- Japan Synchrotron Radiation Research Institute (SPring-8), 1-1-1 Kouto, Mikazuki-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Yuji Higuchi
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Hiroyasu Yamaguchi
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.,Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Akira Harada
- Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.,The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Hiroshi Uyama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoshinori Takashima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.,Project Research Center for Fundamental Sciences, 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
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9
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Xia D, Wang P, Ji X, Khashab NM, Sessler JL, Huang F. Functional Supramolecular Polymeric Networks: The Marriage of Covalent Polymers and Macrocycle-Based Host–Guest Interactions. Chem Rev 2020; 120:6070-6123. [DOI: 10.1021/acs.chemrev.9b00839] [Citation(s) in RCA: 263] [Impact Index Per Article: 65.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Danyu Xia
- Scientific Instrument Center, Shanxi University, Taiyuan 030006, P. R. China
| | - Pi Wang
- Ministry of Education Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Xiaofan Ji
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Niveen M. Khashab
- Smart Hybrid Materials (SHMS) Laboratory, Chemical Science Program, King Abdullah University of Science and Technology (KAUST), 4700 King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Jonathan L. Sessler
- Department of Chemistry, The University of Texas at Austin, 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States
- Center for Supramolecular Chemistry and Catalysis, Shanghai University, Shanghai 200444, P. R. China
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
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10
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Kureha T, Hiroshige S, Suzuki D, Sawada J, Aoki D, Takata T, Shibayama M. Quantification for the Mixing of Polymers on Microspheres in Waterborne Latex Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:4855-4862. [PMID: 32348148 DOI: 10.1021/acs.langmuir.0c00612] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Although tremendous efforts have been devoted to the structural analysis and understanding of the toughness of latex films, in which soft elastomer microspheres are interpenetrated, a method to quantitatively analyze the mixing of polymer chains at the microsphere surface, i.e., delocalization of hydrophilic charged group on the polymer chains by aging, has not yet been established. In this study, small-angle X-ray scattering was applied to characterize latex films by assuming a pseudo-two-phase system, which consists of an average-electron density microsphere core and a high-electron density interphase between the microsphere interfaces due to localized charged groups. The thus obtained parameter, i.e., the characteristic interfacial thickness (tinter), quantitatively reflects the degree of mixing of polymer chains on the microsphere surface. We found that tinter is strongly correlated to the fracture energy of the latex films. The proposed analysis method for the microscopic mixing of polymers on the microsphere surface in the film can thus be expected to shed light on design guidelines for industrial latex films and on the understanding of the mechanical properties of such films.
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Affiliation(s)
- Takuma Kureha
- Institute for Solid State Physics, The University of Tokyo, Kashiwa 277-8581, Japan
| | | | - Daisuke Suzuki
- JST CREST (Core Research for Evolutional Science and Technology), 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Jun Sawada
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Daisuke Aoki
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
- JST CREST (Core Research for Evolutional Science and Technology), 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Toshikazu Takata
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
- JST CREST (Core Research for Evolutional Science and Technology), 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Mitsuhiro Shibayama
- Institute for Solid State Physics, The University of Tokyo, Kashiwa 277-8581, Japan
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11
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Preparation of hydrophilic polymeric materials with movable cross-linkers and their mechanical property. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122465] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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12
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Sawada J, Sogawa H, Marubayashi H, Nojima S, Otsuka H, Nakajima K, Akae Y, Takata T. Segmented polyurethanes containing movable rotaxane units on the main chain: Synthesis, structure, and mechanical properties. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122358] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Zou H, Qiu G, Liu G, Soddemann M, Xu J. A Novel Approach to Investigating Effect of Sulfur as a Coagent on the Quasi‐Static and Cyclic–Dynamic Fatigue Properties of Peroxide Cured EPDM. POLYM ENG SCI 2020. [DOI: 10.1002/pen.25300] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Huimin Zou
- Key Laboratory of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber‐PlasticsQingdao University of Science & Technology Qingdao 266042 China
| | - Guixue Qiu
- Key Laboratory of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber‐PlasticsQingdao University of Science & Technology Qingdao 266042 China
| | - Guangyong Liu
- Key Laboratory of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber‐PlasticsQingdao University of Science & Technology Qingdao 266042 China
| | | | - Jiayong Xu
- Datwyler Sealing Technologies (Anhui) Co., Ltd. Ningguo 242300 China
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14
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Konishi S, Kashiwagi Y, Watanabe G, Osaki M, Katashima T, Urakawa O, Inoue T, Yamaguchi H, Harada A, Takashima Y. Design and mechanical properties of supramolecular polymeric materials based on host–guest interactions: the relation between relaxation time and fracture energy. Polym Chem 2020. [DOI: 10.1039/d0py01347a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The viscoelastic behaviour of the reversible cross-linking points, which could be tuned by the relaxation time and the tensile rate, improved the fracture energy of the supramolecular hydrogels.
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15
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Lu Y, Aoki D, Sawada J, Kosuge T, Sogawa H, Otsuka H, Takata T. Visualization of the slide-ring effect: a study on movable cross-linking points using mechanochromism. Chem Commun (Camb) 2020; 56:3361-3364. [DOI: 10.1039/c9cc09452k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
To evaluate the ‘slide-ring’ effect in a rotaxane cross-linked network, we incorporated mechanochromophores into static and rotaxane cross-linking points and compared the mechanochromisms exhibited by the obtained polymers.
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Affiliation(s)
- Yi Lu
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Tokyo
- Japan
| | - Daisuke Aoki
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Tokyo
- Japan
| | - Jun Sawada
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Tokyo
- Japan
| | - Takahiro Kosuge
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Tokyo
- Japan
| | - Hiromitsu Sogawa
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Tokyo
- Japan
| | - Hideyuki Otsuka
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Tokyo
- Japan
| | - Toshikazu Takata
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Tokyo
- Japan
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16
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Akae Y, Sogawa H, Takata T. Effective Synthesis and Modification of α‐Cyclodextrin‐Based [3]Rotaxanes Enabling Versatile Molecular Design. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900362] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Yosuke Akae
- Department of Chemical Science and Engineering Tokyo Institute of Technology 2–12–1, O‐okayama, Meguro‐ku 152–8552 Tokyo Japan
| | - Hiromitsu Sogawa
- Department of Chemical Science and Engineering Tokyo Institute of Technology 2–12–1, O‐okayama, Meguro‐ku 152–8552 Tokyo Japan
| | - Toshikazu Takata
- Department of Chemical Science and Engineering Tokyo Institute of Technology 2–12–1, O‐okayama, Meguro‐ku 152–8552 Tokyo Japan
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17
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Sawada J, Aoki D, Otsuka H, Takata T. A Guiding Principle for Strengthening Crosslinked Polymers: Synthesis and Application of Mobility‐Controlling Rotaxane Crosslinkers. Angew Chem Int Ed Engl 2019; 58:2765-2768. [DOI: 10.1002/anie.201813439] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 12/28/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Jun Sawada
- Department of Chemical Science and EngineeringTokyo Institute of Technology 2-12-1, O-okayama Meguro, Tokyo Japan
| | - Daisuke Aoki
- Department of Chemical Science and EngineeringTokyo Institute of Technology 2-12-1, O-okayama Meguro, Tokyo Japan
| | - Hideyuki Otsuka
- Department of Chemical Science and EngineeringTokyo Institute of Technology 2-12-1, O-okayama Meguro, Tokyo Japan
| | - Toshikazu Takata
- Department of Chemical Science and EngineeringTokyo Institute of Technology 2-12-1, O-okayama Meguro, Tokyo Japan
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18
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Takata T. Stimuli-Responsive Molecular and Macromolecular Systems Controlled by Rotaxane Molecular Switches. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180330] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Toshikazu Takata
- Department of Chemical Science and Engineering and Research Institute of Polymer Science and Technology (RIPST), Tokyo Institute of Technology, and JST-CREST, Ookayama, Meguro, Tokyo 152-8552, Japan
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19
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Sawada J, Aoki D, Otsuka H, Takata T. A Guiding Principle for Strengthening Crosslinked Polymers: Synthesis and Application of Mobility‐Controlling Rotaxane Crosslinkers. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813439] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jun Sawada
- Department of Chemical Science and EngineeringTokyo Institute of Technology 2-12-1, O-okayama Meguro, Tokyo Japan
| | - Daisuke Aoki
- Department of Chemical Science and EngineeringTokyo Institute of Technology 2-12-1, O-okayama Meguro, Tokyo Japan
| | - Hideyuki Otsuka
- Department of Chemical Science and EngineeringTokyo Institute of Technology 2-12-1, O-okayama Meguro, Tokyo Japan
| | - Toshikazu Takata
- Department of Chemical Science and EngineeringTokyo Institute of Technology 2-12-1, O-okayama Meguro, Tokyo Japan
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20
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Rao SJ, Nakazono K, Liang X, Nakajima K, Takata T. A supramolecular network derived by rotaxane tethering three ureido pyrimidinone groups. Chem Commun (Camb) 2019; 55:5231-5234. [DOI: 10.1039/c9cc01660k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rotaxane-cross-linked supramolecular network with good mechanical properties resulting from a trifunctional [2]rotaxane via intermolecular hydrogen bonding interactions.
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Affiliation(s)
- Si-Jia Rao
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Meguro-ku
- Japan
| | - Kazuko Nakazono
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Meguro-ku
- Japan
| | - Xiaobin Liang
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Meguro-ku
- Japan
| | - Ken Nakajima
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Meguro-ku
- Japan
| | - Toshikazu Takata
- Department of Chemical Science and Engineering
- Tokyo Institute of Technology
- Meguro-ku
- Japan
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21
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Sato H, Aoki D, Takata T. Which One is Bulkier: The 3,5-Dimethylphenyl or the 2,6-Dimethylphenyl Group? Development of Size-Complementary Molecular and Macromolecular [2]Rotaxanes. Chem Asian J 2018; 13:785-789. [PMID: 29392843 DOI: 10.1002/asia.201800170] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Indexed: 11/10/2022]
Abstract
We developed novel size-complementary molecular and macromolecular rotaxanes using a 2,6-dimethylphenyl terminal group as the axle-end-cap group in dibenzo-24-crown-8-ether (DB24C8)-based rotaxanes, where the 2,6-dimethylphenyl group was found to be less bulky than the 3,5-dimethylphenyl group. A series of molecular and macromolecular [2]rotaxanes that bear a 2,6-dimethylphenyl group as the axle-end-cap were synthesized using unsubstituted and fluorine-substituted DB24C8. Base-induced decomposition into their constituent components confirmed the occurrence of deslipping, which supports the size-complementarity of these rotaxanes. The deslipping rate was independent of the axle length but dependent on the DB24C8 substituents. A kinetic study indicated the rate-determining step was that in which the wheel is getting over the end-cap group, and deslipping proceeded via a hopping-over mechanism. Finally, the present deslipping behavior was applied to a stimulus-degradable polymer as an example for the versatile utility of this concept in the context of stimulus-responsive materials.
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Affiliation(s)
- Hiroki Sato
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Daisuke Aoki
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Toshikazu Takata
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8552, Japan.,JST-CREST, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
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22
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Zhu M, Yin L, Zhou Y, Wu H, Zhu L. Engineering Rotaxane-Based Nanoarchitectures via Topochemical Photo-Cross-Linking. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02736] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Mingjie Zhu
- State Key Laboratory of Molecular Engineering
of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Liyuan Yin
- State Key Laboratory of Molecular Engineering
of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Yunyun Zhou
- State Key Laboratory of Molecular Engineering
of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Hongwei Wu
- State Key Laboratory of Molecular Engineering
of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Liangliang Zhu
- State Key Laboratory of Molecular Engineering
of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
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23
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Wagner-Wysiecka E, Łukasik N, Biernat JF, Luboch E. Azo group(s) in selected macrocyclic compounds. J INCL PHENOM MACRO 2018; 90:189-257. [PMID: 29568230 PMCID: PMC5845695 DOI: 10.1007/s10847-017-0779-4] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 12/26/2017] [Indexed: 01/15/2023]
Abstract
Azobenzene derivatives due to their photo- and electroactive properties are an important group of compounds finding applications in diverse fields. Due to the possibility of controlling the trans-cis isomerization, azo-bearing structures are ideal building blocks for development of e.g. nanomaterials, smart polymers, molecular containers, photoswitches, and sensors. Important role play also macrocyclic compounds well known for their interesting binding properties. In this article selected macrocyclic compounds bearing azo group(s) are comprehensively described. Here, the relationship between compounds' structure and their properties (as e.g. ability to guest complexation, supramolecular structure formation, switching and motion) is reviewed.
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Affiliation(s)
- Ewa Wagner-Wysiecka
- Department of Chemistry and Technology of Functional Materials, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza Street 11/12, 80-233 Gdańsk, Poland
| | - Natalia Łukasik
- Department of Chemistry and Technology of Functional Materials, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza Street 11/12, 80-233 Gdańsk, Poland
| | - Jan F Biernat
- Department of Chemistry and Technology of Functional Materials, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza Street 11/12, 80-233 Gdańsk, Poland
| | - Elżbieta Luboch
- Department of Chemistry and Technology of Functional Materials, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza Street 11/12, 80-233 Gdańsk, Poland
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24
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Wang W, Xing H. A novel supramolecular polymer network based on a catenane-type crosslinker. Polym Chem 2018. [DOI: 10.1039/c7py02034a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel supramolecular mechanically interlocked crosslinker was designed and used to prepare a supramolecular polymer network.
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Affiliation(s)
- Wenbo Wang
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Hao Xing
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
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25
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Hiroshige S, Kureha T, Aoki D, Sawada J, Aoki D, Takata T, Suzuki D. Formation of Tough Films by Evaporation of Water from Dispersions of Elastomer Microspheres Crosslinked with Rotaxane Supramolecules. Chemistry 2017; 23:8405-8408. [PMID: 28493449 DOI: 10.1002/chem.201702077] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Indexed: 11/09/2022]
Abstract
Compared to rigid microspheres that consist, for example, of polystyrene or silica, soft and deformable elastomer microspheres can be used to generate colorless transparent films upon evaporating the solvent from microsphere-containing dispersions. To obtain tough films, a post-polymerization reaction to crosslink the microspheres is usually necessary, which requires extra additives during the drying process. This restriction renders this film-formation technology complex and rather unsuitable for applications in which impurities are undesirable. In the present study, it is demonstrated that tough elastomer microspheres that are crosslinked with rotaxanes can form tough bulk films upon evaporation of water from microsphere dispersions, so that post-polymerization reactions are not required. The results of this study should thus lead to new applications including coatings for biomaterials that need complete removal of all impurities from the materials prior to use.
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Affiliation(s)
- Seina Hiroshige
- Graduate School of Textile Science & Technology, Shinshu University, 3-15-1 Tokida Ueda, Nagano, 386-8567, Japan
| | - Takuma Kureha
- Graduate School of Textile Science & Technology, Shinshu University, 3-15-1 Tokida Ueda, Nagano, 386-8567, Japan
| | - Daichi Aoki
- Graduate School of Textile Science & Technology, Shinshu University, 3-15-1 Tokida Ueda, Nagano, 386-8567, Japan
| | - Jun Sawada
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro, Tokyo, 152-8552, Japan
| | - Daisuke Aoki
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro, Tokyo, 152-8552, Japan
| | - Toshikazu Takata
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro, Tokyo, 152-8552, Japan.,JST-CREST, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Daisuke Suzuki
- Graduate School of Textile Science & Technology, Shinshu University, 3-15-1 Tokida Ueda, Nagano, 386-8567, Japan.,Division of Smart Textiles, Institute for Fiber Engineering, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, 3-15-1 Tokida Ueda, Nagano, 386-8567, Japan
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