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Bugakov MA, Boiko NI, Chernikova EV, Abramchuk SS, Shibaev VP. New Comb-Shaped Triblock Copolymers Containing a Liquid-Crystalline Block and Polyvinylpyridine Amorphous Blocks: Synthesis and Properties. POLYMER SCIENCE SERIES C 2018. [DOI: 10.1134/s1811238218010022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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2
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Li Y, Jiang T, Wang L, Lin S, Lin J. Self-assembly of rod-coil-rod triblock copolymers: A route toward hierarchical liquid crystalline structures. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.09.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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Rancatore BJ, Kim B, Mauldin CE, Fréchet JMJ, Xu T. Organic Semiconductor-Containing Supramolecules: Effect of Small Molecule Crystallization and Molecular Packing. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02449] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Benjamin J. Rancatore
- Materials
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - BongSoo Kim
- Department
of Science Education, Ewha Womans University, Seoul 120-750, Republic of Korea
| | | | - Jean M. J. Fréchet
- Materials
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- King Abdullah
University of Science and Technology, Thuwal, Saudi Arabia 23955-6900
| | - Ting Xu
- Materials
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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Zhao Y, Su B, Chen F, Fu Q. Evolution of unique nano-cylindrical structure in poly(styrene-b-isoprene-b-styrene) prepared under "dynamic packing injection moulding". SOFT MATTER 2015; 11:2300-2307. [PMID: 25658968 DOI: 10.1039/c4sm02463j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This work reports the evolution of ordered nano-cylindrical structures in a thermoplastic elastomer, poly(styrene-b-isoprene-b-styrene) (SIS), utilizing a newly designed processing technique, so-called "dynamic-packing injection moulding". In this injection moulding technique, controlled oscillating shears with different shear cessation times under constant pressure were applied on the moulded samples during cooling. It was found that these additional controlled oscillating shears resulted in a change of orientation in skin-core structures in these samples, compared with corresponding "reference" samples processed via traditional injection moulding (without controlled oscillating shears). For the "reference" samples, a highly oriented PS cylindrical structure combined with relatively weak lateral ordering was observed in their skin layers, whereas the lateral ordering of the PS nano-cylinders gradually disappeared when entering the core region. On the other hand, for the SIS samples obtained via "dynamic-packing injection moulding", the orientation of the PS nano-cylinders in the skin layers was similar to the case of the "reference" sample due to their extremely fast cooling rate. However, the lateral ordering of these cylinders had been extended to the core region. With an increase in the cessation time, the lateral ordering of the PS nano-cylinders was further improved and finally resulted in hexagonal lateral packing along the flow direction in the mould. Furthermore, a mixture of parallel/perpendicular orientation of the cylinders relative to the flow direction was found, particularly when the cessation time was short (such as 3 s). We speculated that this specific perpendicular orientation was a transient state for development of a final parallel orientation aligned with the flow direction with increasing cessation time, accompanied by a further enhancement of the nano-cylindrical parallel orientation. This study could provide a better understanding of the shear and relaxation effects on the structural evolution of this class of thermoplastic elastomers, enhancing supramolecular ordered cylindrical orientation in the core region, and paving a way to tune the nano-structures of block copolymers via this new processing technique to achieve desired properties.
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Affiliation(s)
- Yongsheng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
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5
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Wei W, Liu Y, Xiong H. Interplay of liquid crystalline ordering in double side-chain liquid crystalline diblock copolymer. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.10.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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6
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Wang J, Odarchenko YI, Defaux M, Lejnieks J, Ahokhin DV, Keul H, Ivanov DA, Möller M, Mourran A. Concurrent Order in a Semi-Crystalline Diblock Copolymer Involving Complexation with a Mesogen. Macromolecules 2013. [DOI: 10.1021/ma4008797] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jingbo Wang
- Interactive Materials Research
- DWI an der RWTH Aachen e.V. Institut für Technische und
Makromolekulare Chemie, RWTH Aachen University, Forckenbeckstrasse 50, D-52056 Aachen, Germany
| | - Yaroslav I. Odarchenko
- Institut de Sciences des Matériaux
de Mulhouse-IS2M, CNRS UMR7361, Jean Starcky,
15, F-68057 Mulhouse, France
| | - Matthieu Defaux
- Interactive Materials Research
- DWI an der RWTH Aachen e.V. Institut für Technische und
Makromolekulare Chemie, RWTH Aachen University, Forckenbeckstrasse 50, D-52056 Aachen, Germany
| | - Janis Lejnieks
- Interactive Materials Research
- DWI an der RWTH Aachen e.V. Institut für Technische und
Makromolekulare Chemie, RWTH Aachen University, Forckenbeckstrasse 50, D-52056 Aachen, Germany
| | - Denis V. Ahokhin
- Faculty of Fundamental Physical
and Chemical Engineering, Moscow State University, 119991, Moscow, Russia
| | - Helmut Keul
- Interactive Materials Research
- DWI an der RWTH Aachen e.V. Institut für Technische und
Makromolekulare Chemie, RWTH Aachen University, Forckenbeckstrasse 50, D-52056 Aachen, Germany
| | - Dimitri A. Ivanov
- Institut de Sciences des Matériaux
de Mulhouse-IS2M, CNRS UMR7361, Jean Starcky,
15, F-68057 Mulhouse, France
- Faculty of Fundamental Physical
and Chemical Engineering, Moscow State University, 119991, Moscow, Russia
| | - Martin Möller
- Interactive Materials Research
- DWI an der RWTH Aachen e.V. Institut für Technische und
Makromolekulare Chemie, RWTH Aachen University, Forckenbeckstrasse 50, D-52056 Aachen, Germany
| | - Ahmed Mourran
- Interactive Materials Research
- DWI an der RWTH Aachen e.V. Institut für Technische und
Makromolekulare Chemie, RWTH Aachen University, Forckenbeckstrasse 50, D-52056 Aachen, Germany
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7
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Goseki R, Hirao A, Kakimoto MA, Hayakawa T. Cylindrical Nanostructure of Rigid-Rod POSS-Containing Polymethacrylate from a Star-Branched Block Copolymer. ACS Macro Lett 2013; 2:625-629. [PMID: 35581795 DOI: 10.1021/mz400125t] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A nanostructure consisting of rectangular polyhedral oligomeric silsesquioxane (POSS) nanodomains packed into a hexagonal lattice was observed in POSS-containing A2B star-branched polymers. The A2B star-branched polymers, which comprised polystyrene (A) and bulky POSS-containing poly(methacrylate) (PMAPOSS) (B) units, were synthesized by anionic polymerization and addition reaction. The self-assembled structures of the A2B star-branched polymers were studied via transmission electron microscopy (TEM) and small- and wide-angle X-ray scattering (SAXS and WAXS, respectively). It was found that a rectangular nanostructure was packed into a hexagonal arrangement of nanodomains for a PMAPOSS volume fraction of 40 vol. % in the star-branched polymer. In addition, the cylinder-like nanostructure of bulky POSS observed, which is not observed in the case of PS-b-PMAPOSS diblock copolymers, was formed owing to the curvature effect, which is the result of the branched architecture of the copolymer.
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Affiliation(s)
- Raita Goseki
- Department of Organic, Polymeric
Materials, Tokyo Institute of Technology, 2-12-1-S8-36 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Akira Hirao
- Department of Organic, Polymeric
Materials, Tokyo Institute of Technology, 2-12-1-S8-36 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
- Institute of Polymer Science,
Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Masa-aki Kakimoto
- Department of Organic, Polymeric
Materials, Tokyo Institute of Technology, 2-12-1-S8-36 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Teruaki Hayakawa
- Department of Organic, Polymeric
Materials, Tokyo Institute of Technology, 2-12-1-S8-36 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
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Srinivasan MV, Kannan P, Roy A. Photo and electrically switchable behavior of azobenzene containing pendant bent‐core liquid crystalline polymers. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26455] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | - P. Kannan
- Department of Chemistry, Anna University, Chennai, India
| | - A. Roy
- Soft Condensed Matter, Raman Research Institute, Bangaluru, India
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Gimeno N, Sánchez-Ferrer A, Sebastián N, Mezzenga R, Ros MB. Bent-Core Based Main-Chain Polymers Showing the Dark Conglomerate Liquid Crystal Phase. Macromolecules 2011. [DOI: 10.1021/ma202109z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nélida Gimeno
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
| | - Antoni Sánchez-Ferrer
- Institute of Food, Nutrition & Health, Food & Soft Materials Science Group, ETH Zurich, Schmelzbergstrasse 9, LFO, E23-29, CH-8092 Zürich, Switzerland
| | - Nerea Sebastián
- Departamento de Física Aplicada II, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apdo. 644, 48080-Bilbao, Spain
| | - Raffaele Mezzenga
- Institute of Food, Nutrition & Health, Food & Soft Materials Science Group, ETH Zurich, Schmelzbergstrasse 9, LFO, E23-29, CH-8092 Zürich, Switzerland
| | - M. Blanca Ros
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza, CSIC, 50009 Zaragoza, Spain
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Yu H, Kobayashi T, Yang H. Liquid-crystalline ordering helps block copolymer self-assembly. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:3337-3344. [PMID: 21910267 DOI: 10.1002/adma.201101106] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Interaction between liquid-crystalline elastic deformation and microphase separation in liquid-crystalline block copolymers enables them to supramolecularly assemble into ordered nanostructures with high regularity. With the help of liquid-crystalline alignment, parallel and perpendicular patterning of nanostructures is fabricated with excellent reproducibility and mass production, which provides nanotemplates and nanofabrication processes for preparing varieties of nanomaterials. Furthermore, nanoscale microphase separation improves the optical performance of block-copolymer fi lms by eliminating the scattering of visible light, leading to advanced applications in optical devices and actuators. Recent progress in liquid-crystalline block copolymers, including their phase diagram, structure-property relationship, nanostructure control and nanotemplate applications, is reviewed.
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Affiliation(s)
- Haifeng Yu
- Top Runner Incubation Center for Academia-Industry Fusion, Department of Materials Science and Technology, Nagaoka University of Technology, Japan.
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11
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Zhou Y, Ahn SK, Lakhman RK, Gopinadhan M, Osuji CO, Kasi RM. Tailoring Crystallization Behavior of PEO-Based Liquid Crystalline Block Copolymers through Variation in Liquid Crystalline Content. Macromolecules 2011. [DOI: 10.1021/ma102922u] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Yuxiang Zhou
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Suk-kyun Ahn
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Rubinder Kaur Lakhman
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Manesh Gopinadhan
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
| | - Chinedum O. Osuji
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
| | - Rajeswari M. Kasi
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
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12
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Yang PJ, Wang LY, Tang CY, Lin HC. Polymeric dopant effects of bent-core covalent-bonded and hydrogen-bonded structures on banana-shaped liquid crystalline complexes. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.23823] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Xie HL, Liu YX, Zhong GQ, Zhang HL, Chen EQ, Zhou QF. Design, Synthesis, and Multiple Hierarchical Ordering of a Novel Side-Chain Liquid Crystalline-Rod Diblock Copolymer. Macromolecules 2009. [DOI: 10.1021/ma9017668] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- He-Lou Xie
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges, and Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan Province, China
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering, and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yi-Xin Liu
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering, and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Guan-Qun Zhong
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges, and Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan Province, China
| | - Hai-Liang Zhang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges, and Universities of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan Province, China
| | - Er-Qiang Chen
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering, and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Qi-Feng Zhou
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering, and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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