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1
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Hida N, Nakajima T, Hara M, Seki T, Nagano S. Induced Smectic E Phase in a Binary Blend of Side-Chain Liquid Crystalline Polymers. Macromol Rapid Commun 2023; 44:e2200761. [PMID: 36367366 DOI: 10.1002/marc.202200761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/02/2022] [Indexed: 11/13/2022]
Abstract
Two liquid crystalline polymers containing an azobenzene or cyanobiphenyl mesogenic side chain that adopt smectic A phases are mechanically mixed at 1:1 mesogen molar ratio at an isotropic phase temperature and then cooled. The resultant binary polymer mixture behaves like a single component as revealed by polarized microscopy observation and differential scanning calorimetry, indicating that the binary mixture forms a fully compatible polymer blend. Moreover, the simple polymer blend unexpectedly leads to a higher-ordered smectic E phase where a herringbone structure is formed with restricted mesogen axis rotation. These results suggest a specific intermolecular interaction between the two mesogens, thereby inducing unusual compatibilized polymer blends and the most ordered liquid crystal (LC) phase.
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Affiliation(s)
- Naoki Hida
- Department of Molecular & Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya, 464-8603, Japan
| | - Tatsunaga Nakajima
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima, Tokyo, 171-8501, Japan
| | - Mitsuo Hara
- Department of Molecular & Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya, 464-8603, Japan
| | - Takahiro Seki
- Department of Molecular & Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya, 464-8603, Japan
| | - Shusaku Nagano
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima, Tokyo, 171-8501, Japan
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2
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Kim DG, Kim YH, Shin TJ, Cha EJ, Kim DS, Kim BG, Yoo Y, Kim YS, Yi MH, Won JC. Highly anisotropic thermal conductivity of discotic nematic liquid crystalline films with homeotropic alignment. Chem Commun (Camb) 2017; 53:8227-8230. [DOI: 10.1039/c7cc02891a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Homeotropic alignment and photo-crosslinking of discotic nematic liquid crystals yield free-standing films with high in-plane thermal conductivity and thermal conductivity anisotropy.
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3
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Wang M, Wang J, Yang H, Lin BP, Chen EQ, Keller P, Zhang XQ, Sun Y. Homeotropically-aligned main-chain and side-on liquid crystalline elastomer films with high anisotropic thermal conductivities. Chem Commun (Camb) 2016; 52:4313-6. [DOI: 10.1039/c6cc00081a] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Homeotropically-aligned main-chain and side-on liquid3crystalline elastomer films are reported. Their thermal conductivities in the normal direction are both dramatically higher than those along the horizontal direction.
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Affiliation(s)
- Meng Wang
- School of Chemistry and Chemical Engineering
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Southeast University
- Nanjing
| | - Jun Wang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics at the Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Hong Yang
- School of Chemistry and Chemical Engineering
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Southeast University
- Nanjing
| | - Bao-Ping Lin
- School of Chemistry and Chemical Engineering
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Southeast University
- Nanjing
| | - Er-Qiang Chen
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Polymer Chemistry and Physics at the Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Patrick Keller
- Institut Curie
- Centre De Recherche
- CNRS UMR 168
- Université Pierre et Marie Curie
- 26 rue d'Ulm 75248 Paris Cedex 05
| | - Xue-Qin Zhang
- School of Chemistry and Chemical Engineering
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Southeast University
- Nanjing
| | - Ying Sun
- School of Chemistry and Chemical Engineering
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Southeast University
- Nanjing
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4
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Diaz JA, Ye Z, Wu X, Moore AL, Moon RJ, Martini A, Boday DJ, Youngblood JP. Thermal Conductivity in Nanostructured Films: From Single Cellulose Nanocrystals to Bulk Films. Biomacromolecules 2014; 15:4096-101. [PMID: 25286405 DOI: 10.1021/bm501131a] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Jairo A. Diaz
- School
of Materials Engineering, Purdue University, 701 West Stadium Avenue, West Lafayette, Indiana 47907, United States
| | - Zhijiang Ye
- School
of Mechanical Engineering, University of California, Merced, California 95343, United States
| | - Xiawa Wu
- School
of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Arden L. Moore
- IBM Materials
Engineering, Tucson, Arizona 85744, United States
| | - Robert J. Moon
- Forest
Products Laboratory, U.S. Forest Service, One Gifford Pinchot Drive, Madison, Wisconsin 53726, United States
| | - Ashlie Martini
- School
of Mechanical Engineering, University of California, Merced, California 95343, United States
| | - Dylan J. Boday
- IBM Materials
Engineering, Tucson, Arizona 85744, United States
| | - Jeffrey P. Youngblood
- School
of Materials Engineering, Purdue University, 701 West Stadium Avenue, West Lafayette, Indiana 47907, United States
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Shoji Y, Ishige R, Higashihara T, Morikawa J, Hashimoto T, Takahara A, Watanabe J, Ueda M. Cross-Linked Liquid Crystalline Polyimides with Siloxane Units: Their Morphology and Thermal Diffusivity. Macromolecules 2013. [DOI: 10.1021/ma302486s] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yu Shoji
- Department
of Organic and Polymeric
Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 H-120, O-okayama,
Meguro-Ku, Tokyo 152-8550, Japan
| | - Ryohei Ishige
- Institute for Materials Chemistry
and Engineering, Kyushu University, 744
Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Tomoya Higashihara
- Department
of Organic and Polymeric
Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 H-120, O-okayama,
Meguro-Ku, Tokyo 152-8550, Japan
- PRESTO, Japan Science and Technology Agency (JST), 4-1-8, Honcho, Kawaguchi,
Saitama 332-0012, Japan
| | - Junko Morikawa
- Department
of Organic and Polymeric
Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 H-120, O-okayama,
Meguro-Ku, Tokyo 152-8550, Japan
| | - Toshimasa Hashimoto
- Department
of Organic and Polymeric
Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 H-120, O-okayama,
Meguro-Ku, Tokyo 152-8550, Japan
| | - Atsushi Takahara
- Institute for Materials Chemistry
and Engineering, Kyushu University, 744
Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Junji Watanabe
- Department
of Organic and Polymeric
Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 H-120, O-okayama,
Meguro-Ku, Tokyo 152-8550, Japan
| | - Mitsuru Ueda
- Department
of Organic and Polymeric
Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 H-120, O-okayama,
Meguro-Ku, Tokyo 152-8550, Japan
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6
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Chen S, Hsu SH, Wu MC, Su WF. Kinetics studies on the accelerated curing of liquid crystalline epoxy resin/multiwalled carbon nanotube nanocomposites. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/polb.22179] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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7
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Shoji Y, Ishige R, Higashihara T, Kawauchi S, Watanabe J, Ueda M. Synthesis and Liquid Crystalline Behavior of Laterally Substituted Polyimides with Siloxane Linkages. Macromolecules 2010. [DOI: 10.1021/ma101751e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yu Shoji
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-H-120, O-okayama, Meguro-Ku, Tokyo 152-8552, Japan
| | - Ryohei Ishige
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-H-120, O-okayama, Meguro-Ku, Tokyo 152-8552, Japan
| | - Tomoya Higashihara
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-H-120, O-okayama, Meguro-Ku, Tokyo 152-8552, Japan
| | - Susumu Kawauchi
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-H-120, O-okayama, Meguro-Ku, Tokyo 152-8552, Japan
| | - Junji Watanabe
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-H-120, O-okayama, Meguro-Ku, Tokyo 152-8552, Japan
| | - Mitsuru Ueda
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-H-120, O-okayama, Meguro-Ku, Tokyo 152-8552, Japan
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8
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Shoji Y, Higashihara T, Watanabe J, Ueda M. Synthesis of Thermotropic Liquid Crystalline Polyimides with Siloxane Linkages. CHEM LETT 2009. [DOI: 10.1246/cl.2009.716] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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9
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Kato T, Nakamura T, Agari Y, Ochi M. Thermal conductivity of homogeneous alignment networks formed with mono- and bi-functional polymerizable liquid crystals. J Appl Polym Sci 2007. [DOI: 10.1002/app.26050] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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10
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Haitao S, Juqing C, Qiang Z, Wei Z, Qihui H, Baixing H, Jian S. Preparation and properties of EPDM/TiO2 composites. J Appl Polym Sci 2007. [DOI: 10.1002/app.26614] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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