1
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Tamate R, Ueki T. Adaptive Ion-Gel: Stimuli-Responsive, and Self-Healing Ion Gels. CHEM REC 2023; 23:e202300043. [PMID: 37068193 DOI: 10.1002/tcr.202300043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/07/2023] [Indexed: 04/19/2023]
Abstract
Ion gels are an emerging class of polymer gels in which a three-dimensional polymer network swells with an ionic liquid. Ion gels have drawn considerable attention in various fields such as energy and biotechnology owing to their excellent properties including nonvolatility, nonflammability, high ionic conductivity, and high thermal and electrochemical stability. Since the first report on ion gels (published ∼30 years ago), diverse functional ion gels exhibiting impressive physicochemical properties have been reported. In this review, recent developments in functional ion gels that can modulate their physical properties in response to environmental conditions are outlined. Stimuli-responsive ion gels that can adaptively undergo phase transitions in response to thermal and light stimuli are initially discussed, followed by an evaluation of diverse self-healing ion gels that can spontaneously mend mechanical damage through judiciously designed ion-gel networks.
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Affiliation(s)
- Ryota Tamate
- Research Center for Macromolecules and Biomaterials, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan
- PRESTO, JST, 7 Gobancho, Chiyoda-ku, Tokyo, 102-0076, Japan
| | - Takeshi Ueki
- Research Center for Macromolecules and Biomaterials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- Graduate School of Life Science Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
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2
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Yang X, Lv S, Li T, Hao S, Zhu H, Cheng Y, Li S, Song H. Dual Thermo-Responsive and Strain-Responsive Ionogels for Smart Windows and Temperature/Motion Monitoring. ACS APPLIED MATERIALS & INTERFACES 2022; 14:20083-20092. [PMID: 35468277 DOI: 10.1021/acsami.2c03142] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In this work, a stretchable, dual thermo-responsive and strain-responsive ionogel has been synthesized by one-step photopolymerization. The obtained ionogel shows an ultrahigh stretchability (∼3000%), a high ionic conductivity (up to 3.1 mS/cm), and a good temperature tolerance (-40 to 300 °C). Importantly, these ionogels show an upper critical solution temperature-type phase transition with a wide tunable phase-transition temperature (17.5-42.5 °C) and reversible color/transparency switching. In particular, the as-prepared ionogel-based flexible/wearable temperature monitors and smart windows show an excellent designability and programmability, temperature modulation ability, and thermal responsiveness. Moreover, the ionogels-based strain sensors have temperature- and strain-dual responsibility and a broad strain-sensing range (1-700%), which can effectively monitor various motions. This strategy of fabricating dual thermo- and strain-responsive ionogels by using a one-step method and only one polymer holds great promise for the next generation of multifunctional stimuli-responsive materials.
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Affiliation(s)
- Xuemeng Yang
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Shufang Lv
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Tianci Li
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Shuai Hao
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Hongnan Zhu
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Yan Cheng
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Shuaijie Li
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Hongzan Song
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
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3
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Kharel A, Hall C, Černoch P, Stepanek P, Lodge TP. Dilute Solution Properties of Poly(benzyl methacrylate) in Ionic Liquids. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02618] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Aakriti Kharel
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Cecilia Hall
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Peter Černoch
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague 117 20, Czech Republic
| | - Petr Stepanek
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague 117 20, Czech Republic
| | - Timothy P. Lodge
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
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4
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Yahata Y, Marukane S, Sato T, Tsujii Y, Ohno K. Controlling the Thermally Induced Phase Separation of Polymer/Ionic Liquid Blended Films with Concentrated-Polymer-Brush-Decorated Hybrid Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:14566-14575. [PMID: 31613635 DOI: 10.1021/acs.langmuir.9b02573] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The development of quasi-solid electrolytes for electrical devices operating at high voltages is important for addressing future energy storage requirements. Here, we report a new method to fabricate quasi-solid electrolytes through the thermally induced phase separation of a polymer/ionic liquid (polymer/IL) blend. In a polymer/IL blend that exhibits lower critical solution temperature-type phase separation, we demonstrate that the addition of silica particles decorated with concentrated polymer brushes (CPB-SiPs) can prevent macroscopic phase separation after heating, resulting in a quasi-solid electrolyte with a continuous IL phase. This is due to the adsorption of CPB-SiPs onto the polymer/IL interface in the phase-separated structure. We also reveal a relationship between the molecular weight of the CPB and the phase-separated structure. Namely, a quasi-solid film with a bicontinuous phase-separated structure is formed only when polymers with an appropriate molecular weight are grafted on the CPB-SiPs. The resulting quasi-solid film exhibits a relatively high ionic conductivity, owing to the existence of a continuous ion-conductive phase solely consisting of IL. In addition, we fabricated a quasi-solid electrolyte with the blended film and successfully applied it to an electric double-layer capacitor operating at a high voltage, owing to the wider potential window of the IL employed herein.
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Affiliation(s)
- Yoshikazu Yahata
- Institute for Chemical Research , Kyoto University , Gokasho, Uji , Kyoto 611-0011 , Japan
| | - Shoko Marukane
- Department of Material Engineering , Tsuruoka National College of Technology , 104 Sawada , Inooka , Tsuruoka 997-8511 , Japan
| | - Takaya Sato
- Department of Material Engineering , Tsuruoka National College of Technology , 104 Sawada , Inooka , Tsuruoka 997-8511 , Japan
| | - Yoshinobu Tsujii
- Institute for Chemical Research , Kyoto University , Gokasho, Uji , Kyoto 611-0011 , Japan
| | - Kohji Ohno
- Institute for Chemical Research , Kyoto University , Gokasho, Uji , Kyoto 611-0011 , Japan
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5
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Yan ZC, Biswas CS, Stadler FJ. Rheological Study on the Thermoreversible Gelation of Stereo-Controlled Poly( N-Isopropylacrylamide) in an Imidazolium Ionic Liquid. Polymers (Basel) 2019; 11:polym11050783. [PMID: 31052491 PMCID: PMC6571980 DOI: 10.3390/polym11050783] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/19/2019] [Accepted: 04/22/2019] [Indexed: 02/04/2023] Open
Abstract
The thermoreversible sol-gel transition for an ionic liquid (IL) solution of isotactic-rich poly (N-isopropylacrylamides) (PNIPAMs) is investigated by rheological technique. The meso-diad content of PNIPAMs ranges between 47% and 79%, and molecular weight (Mn) is ~35,000 and ~70,000 g/mol for two series of samples. PNIPAMs are soluble in 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl) imide ([BMIM][TFSI]) at high temperatures but undergo a gelation with decreasing temperatures. The transition temperature determined from G’-G” crossover increases with isotacticity, consistent with the previous cloud-point result at the same scanning rate, indicating imide groups along the same side of backbones are prone to be aggregated for formation of a gel. The transition point based on Winter-Chambon criterion is on average higher than that of the G’-G” crossover method and is insensitive to tacticity and molecular weight, since it correlates with percolation of globules rather than the further formation of elastic network (G’ > G”). For the first time, the phase diagram composed of both G’-G” crossover points for gelation and cloud points is established in PNIPAM/IL mixtures. For low-Mn PNIPAMs, the crossover-point line intersects the cloud-point line. Hence, from solution to opaque gel, the sample will experience two different transitional phases, either clear gel or opaque sol. A clear gel is formed due to partial phase separation of isotactic segments that could act as junctions of network. However, when the partial phase separation is not faster than the formation of globules, an opaque sol will be formed. For high-Mn PNIPAMs, crossover points are below cloud points at all concentrations, so their gelation only follows the opaque sol route. Such phase diagram is attributed to the poorer solubility of high-Mn polymers for entropic reasons. The phase diagram composed of Winter-Chambon melting points, crossover points for melting, and clear points is similar with the gelation phase diagram, confirming the mechanism above.
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Affiliation(s)
- Zhi-Chao Yan
- College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen 518055, China.
| | - Chandra Sekhar Biswas
- College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen 518055, China.
| | - Florian J Stadler
- College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen 518055, China.
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6
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Highly accelerated crystallization kinetics of poly(ethylene oxide)/ionic liquid mixtures by phase separation: The coupling effect of hydrogen bonds breaking. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.03.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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7
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Chado GR, Holland EN, Tice AK, Stoykovich MP, Kaar JL. Exploiting the Benefits of Homogeneous and Heterogeneous Biocatalysis: Tuning the Molecular Interaction of Enzymes with Solvents via Polymer Modification. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03779] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Garrett R. Chado
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Elijah N. Holland
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Andrew K. Tice
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Mark P. Stoykovich
- Institute for Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Joel L. Kaar
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309, United States
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8
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Tacticity effect on the upper critical solution temperature behavior of Poly(N-isopropylacrylamide) in an imidazolium ionic liquid. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.08.073] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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The effect of light penetration depth on the LCST phase behavior of a thermo‐ and photoresponsive statistical copolymer in an ionic liquid. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/pola.29075] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Jung H, Yethiraj A. A simulation method for the phase diagram of complex fluid mixtures. J Chem Phys 2018; 148:244903. [PMID: 29960369 DOI: 10.1063/1.5033958] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The phase behavior of complex fluid mixtures is of continuing interest, but obtaining the phase diagram from computer simulations can be challenging. In the Gibbs ensemble method, for example, each of the coexisting phases is simulated in a different cell, and ensuring the equality of chemical potentials of all components requires the transfer of molecules from one cell to the other. For complex fluids such as polymers, successful insertions are rare. An alternative method is to simulate both coexisting phases in a single simulation cell, with an interface between them. The challenge here is that the interface position moves during the simulation, making it difficult to determine the concentration profile and coexisting concentrations. In this work, we propose a new method for single cell simulations that uses a spatial concentration autocorrelation function to (spatially) align instantaneous concentration profiles from different snapshots. This allows one to obtain average concentration profiles and hence the coexisting concentrations. We test the method by calculating the phase diagrams of two systems: the Widom-Rowlinson model and the symmetric blends of freely jointed polymer molecules for which phase diagrams from conventional methods are available. Excellent agreement is found, except in the neighborhood of the critical point where the interface is broad and finite size effects are important. The method is easy to implement and readily applied to any mixture of complex fluids.
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Affiliation(s)
- Hyuntae Jung
- Theoretical Chemistry Institute and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, USA
| | - Arun Yethiraj
- Theoretical Chemistry Institute and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, USA
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11
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Chen Y, Niu Y, Gong P, Xiao Z, Li G. Thermally Reversible and Irreversible Phase Transition Behaviors in Poly(ethylene oxide)/Ionic Liquid Mixtures. Macromol Rapid Commun 2017; 38. [PMID: 28895240 DOI: 10.1002/marc.201700401] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Revised: 08/01/2017] [Indexed: 01/09/2023]
Abstract
The irreversible and reversible phase transition behaviors during phase separation-recovery (heating-cooling) cycles for poly(ethylene oxide)/1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid (PEO/[EMIM][BF4 ]) mixtures with a lower critical solution temperature phase diagram are reported for the first time. The evident differential scanning calorimetry endothermic and exothermic peaks are observed during the heating-cooling scan cycles near the phase boundary, in which the large heat loss for samples below the critical composition (60 wt% PEO) and obvious downward shift of phase transition temperature for all the compositions between the first and second cycles are particularly attractive. After the first recovery process, a reversible behavior during the next cycles is expected. These interesting phenomena are further confirmed by optical microscopy and Fourier-transform infrared measurements. It is demonstrated that the disruption and partial recovery of the hydrogen bonds, combined with the conformational change of PEO chains, can contribute to this irreversible behavior as well as a conversion to reversible phase transition behavior.
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Affiliation(s)
- Yunlei Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu, 610065, China
| | - Yanhua Niu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu, 610065, China
| | - Pengjian Gong
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu, 610065, China
| | - Zhilin Xiao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu, 610065, China
| | - Guangxian Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu, 610065, China
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12
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Ma X, Usui R, Kitazawa Y, Tamate R, Kokubo H, Watanabe M. Physicochemical Characterization of a Photoinduced Sol–Gel Transition of an Azobenzene-Containing ABA Triblock Copolymer/Ionic Liquid System. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01538] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Xiaofeng Ma
- Department of Chemistry & Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Ryoji Usui
- Department of Chemistry & Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Yuzo Kitazawa
- Department of Chemistry & Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Ryota Tamate
- Department of Chemistry & Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Hisashi Kokubo
- Department of Chemistry & Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Masayoshi Watanabe
- Department of Chemistry & Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
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13
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Luo H, Xiao Z, Chen Y, Niu Y, Li G. Phase separation kinetics and rheological behavior of Poly(ethylene oxide)/ionic liquid mixtures with large dynamic asymmetry. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.07.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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De Santis S, La Mesa C, Masci G. On the upper critical solution temperature of PNIPAAM in an ionic liquid: Effect of molecular weight, tacticity and water. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.05.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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15
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Qiao Y, Ma W, Theyssen N, Chen C, Hou Z. Temperature-Responsive Ionic Liquids: Fundamental Behaviors and Catalytic Applications. Chem Rev 2017; 117:6881-6928. [DOI: 10.1021/acs.chemrev.6b00652] [Citation(s) in RCA: 211] [Impact Index Per Article: 30.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yunxiang Qiao
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Wenbao Ma
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Nils Theyssen
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Chen Chen
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Zhenshan Hou
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
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16
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Russina O, Triolo A. Ionic Liquids and Neutron Scattering. NEUTRON SCATTERING - APPLICATIONS IN BIOLOGY, CHEMISTRY, AND MATERIALS SCIENCE 2017. [DOI: 10.1016/b978-0-12-805324-9.00004-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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17
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Xiao Z, Larson RG, Chen Y, Zhou C, Niu Y, Li G. Unusual phase separation and rheological behavior of poly(ethylene oxide)/ionic liquid mixtures with specific interactions. SOFT MATTER 2016; 12:7613-7623. [PMID: 27546439 DOI: 10.1039/c6sm01220e] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The phase separation behavior of poly(ethylene oxide) (PEO) in ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF4]) was investigated by rheological, optical microscopy, FT-IR and DSC measurements. It is demonstrated that specific interactions, particularly the hydrogen bonding between PEO and the ionic liquids as evidenced by FT-IR, in which a subtle but apparent absorption peak shift near the phase transition appears, account for the unusual low critical solution temperature (LCST) phase separation. Unlike the typical trend in which the storage modulus G' simply increases with temperature near the phase boundary for polymer blends without specific interaction, in our study, a novel "V-shaped" rheological response is observed, namely a dip in G' followed by an upturn, especially at low PEO concentration (<50 wt%). The magnitude of the "V" dip has heating rate and frequency dependences, while Tr (the phase transition temperature) is almost unchanged with heating rate and frequency. Upon increasing the alkyl chain length on the imidazolium ring from an ethyl to a butyl, the "V-shape" becomes more prominent and shifts to higher temperature, which is consistent with the results of FT-IR and DSC, evidently due to the stronger hydrogen bonding interaction between PEO and [BMIM][BF4] than [EMIM][BF4]. This unusual "V" dip might be tentatively ascribed to the coupling effects of the breaking of the "hydrogen bonding cage" formed between PEO chains and IL molecules and dissolution of the heterogeneous clusters as verified by FT-IR and TEM, respectively, and the following upturn is dominated by the interface formation upon phase separation.
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Affiliation(s)
- Zhilin Xiao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, China.
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18
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Hall CC, Zhou C, Danielsen SPO, Lodge TP. Formation of Multicompartment Ion Gels by Stepwise Self-Assembly of a Thermoresponsive ABC Triblock Terpolymer in an Ionic Liquid. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02789] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Cecilia C. Hall
- Department
of Chemistry and ‡Department of Chemical Engineering and Materials
Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Can Zhou
- Department
of Chemistry and ‡Department of Chemical Engineering and Materials
Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Scott P. O. Danielsen
- Department
of Chemistry and ‡Department of Chemical Engineering and Materials
Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Timothy P. Lodge
- Department
of Chemistry and ‡Department of Chemical Engineering and Materials
Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
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19
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Yuan W, Chen X. Star-shaped and star-block polymers with a porphyrin core: from LCST–UCST thermoresponsive transition to tunable self-assembly behaviour and fluorescence performance. RSC Adv 2016. [DOI: 10.1039/c5ra21647h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The micelles self-assembled from star-shaped and star-block copolymers present a transition of LCST–UCST thermoresponsive properties through a facile quaternization reaction.
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Affiliation(s)
- Weizhong Yuan
- School of Materials Science and Engineering
- Key Laboratory of Advanced Civil Materials of Ministry of Education
- Tongji University
- People's Republic of China
| | - Xiangnan Chen
- School of Materials Science and Engineering
- Key Laboratory of Advanced Civil Materials of Ministry of Education
- Tongji University
- People's Republic of China
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20
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Hirosawa K, Fujii K, Ueki T, Kitazawa Y, Littrell KC, Watanabe M, Shibayama M. SANS study on the solvated structure and molecular interactions of a thermo-responsive polymer in a room temperature ionic liquid. Phys Chem Chem Phys 2016; 18:17881-9. [DOI: 10.1039/c6cp02254e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have utilized SANS to quantitatively characterize the LCST-type phase behavior of PPhEtMA in d8-[C2mIm+][TFSA−].
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Affiliation(s)
- Kazu Hirosawa
- Institute for Solid State Physics
- The University of Tokyo
- Kashiwa
- Japan
| | - Kenta Fujii
- Graduate School of Science and Engineering
- Yamaguchi University
- Ube
- Japan
| | - Takeshi Ueki
- Polymer Materials Unit
- National Institute for Materials Science
- Tsukuba
- Japan
| | - Yuzo Kitazawa
- Department of Chemistry and Biotechnology
- Yokohama National University
- Hodogaya-ku
- Japan
| | | | - Masayoshi Watanabe
- Department of Chemistry and Biotechnology
- Yokohama National University
- Hodogaya-ku
- Japan
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21
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Ueki T, Usui R, Kitazawa Y, Lodge TP, Watanabe M. Thermally Reversible Ion Gels with Photohealing Properties Based on Triblock Copolymer Self-Assembly. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01366] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Takeshi Ueki
- Department
of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo,
Bunkyo-ku, Tokyo 113-8656, Japan
| | - Ryoji Usui
- Department of Chemistry & Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Kanagawa 240-8501, Japan
| | - Yuzo Kitazawa
- Department of Chemistry & Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Kanagawa 240-8501, Japan
| | - Timothy P. Lodge
- Departments of Chemistry and Chemical Engineering & Materials Science, University of Minnesota, 207 Pleasant Street, SE, Minneapolis, Minnesota 55455, United States
| | - Masayoshi Watanabe
- Department of Chemistry & Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Kanagawa 240-8501, Japan
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Ueki T, Nakamura Y, Usui R, Kitazawa Y, So S, Lodge TP, Watanabe M. Photoreversible Gelation of a Triblock Copolymer in an Ionic Liquid. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411526] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ueki T, Nakamura Y, Usui R, Kitazawa Y, So S, Lodge TP, Watanabe M. Photoreversible Gelation of a Triblock Copolymer in an Ionic Liquid. Angew Chem Int Ed Engl 2015; 54:3018-22. [DOI: 10.1002/anie.201411526] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2014] [Revised: 12/17/2014] [Indexed: 01/08/2023]
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Hoarfrost ML, He Y, Lodge TP. Lower Critical Solution Temperature Phase Behavior of Poly(n-butyl methacrylate) in Ionic Liquid Mixtures. Macromolecules 2013. [DOI: 10.1021/ma401450w] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Megan L. Hoarfrost
- Department of Chemistry and ‡Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Yanpu He
- Department of Chemistry and ‡Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Timothy P. Lodge
- Department of Chemistry and ‡Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
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Liu L, Wang T, Liu C, Lin K, Liu G, Zhang G. Specific Anion Effect in Water–Nonaqueous Solvent Mixtures: Interplay of the Interactions between Anion, Solvent, and Polymer. J Phys Chem B 2013; 117:10936-43. [DOI: 10.1021/jp406215c] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Lvdan Liu
- Department
of Chemical Physics, Hefei National Laboratory for Physical Sciences
at the Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Tao Wang
- Department
of Chemical Physics, Hefei National Laboratory for Physical Sciences
at the Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Chang Liu
- Department
of Chemical Physics, Hefei National Laboratory for Physical Sciences
at the Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Ke Lin
- Department
of Chemical Physics, Hefei National Laboratory for Physical Sciences
at the Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Guangming Liu
- Department
of Chemical Physics, Hefei National Laboratory for Physical Sciences
at the Microscale, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Guangzhao Zhang
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
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