1
|
Tunable Thin Film Periodicities by Controlling the Orientation of Cylindrical Domains in Side Chain Liquid Crystalline Block Copolymers. INT J POLYM SCI 2022. [DOI: 10.1155/2022/8286518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A facile approach to block copolymer (BCP) domain orientation control in thin films has been demonstrated by employing a BCP with liquid crystalline semifluorinated side chains by tuning the composition of the copolymers of the bottom surface layer (BSL). 1H,1H,2H,2H-Perfluorodecanethiol was attached to a precursor polymer, polystyrene-block-poly(glycidyl methacrylate) (PS-b-PGMA), to obtain a novel BCP with a C8F17-containing liquid crystal (LC) side chain (PS-b-P8FMA). Anisotropic hexagonally packed cylinder domains in a bulk state were first characterized by transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS). The observed morphology transition of BCPs with different fluorinated side chain lengths of –CF3, –C4F9, and –C6F13 suggested the decisive effects of LC side chain ordering on the anisotropic nanostructures. In the thin film study, poly(methyl methacrylate-random-2,2,2-trifluoroethyl methacrylate-random-methacrylic acid) (PMMA-ran-PTFEMA-ran-PMAA) solution was used as BSLs for tuning the desired periodicities. The surface free energy (SFE) of BSL was simply tailored by changing the composition of comonomers. In atomic force microscopy (AFM) characterization, long-range ordered perpendicularly oriented BCP domains in a hexagonally packed array or parallel oriented BCP domains as striation patterns were easily fabricated on non-preferential or preferential BSL, respectively. The study presents a novel approach to tunable thin film periodicities without changing or modifying BCPs, which is desired in next-generation BCP lithography.
Collapse
|
2
|
Zhang ZK, Guo XS, Zhang TY, Wang RY, Du BY, Xu JT. Hierarchical Structures with Double Lower Disorder-to-Order Transition and Closed-Loop Phase Behaviors in Charged Block Copolymers Bearing Long Alkyl Side Groups. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01267] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ze-Kun Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xiao-Shuai Guo
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| | - Tian-Yu Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| | - Rui-Yang Wang
- Department of Chemistry, Division of Advanced Materials Science, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Bin-Yang Du
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jun-Ting Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China
| |
Collapse
|
3
|
Cao H, Dai L, Liu Y, Li X, Yang Z, Deng H. Methacrylic Block Copolymers Containing Liquid Crystalline and Fluorinated Side Chains Capable of Fast Formation of 4 nm Domains. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00777] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hui Cao
- School of Microelectronics and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Le Dai
- School of Microelectronics and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Yuyun Liu
- School of Microelectronics and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Xuemiao Li
- School of Microelectronics and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Zhenyu Yang
- School of Microelectronics and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Hai Deng
- School of Microelectronics and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| |
Collapse
|
4
|
Dong L, Chandra A, Wylie K, Nakatani R, Nabae Y, Hayakawa T. The Role of Liquid Crystalline Side Chains for Long-range Ordering in the Block Copolymer Thin Films. J PHOTOPOLYM SCI TEC 2020. [DOI: 10.2494/photopolymer.33.529] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Lei Dong
- Department of Materials Science and Engineering, Tokyo Institute of Technology
| | - Alvin Chandra
- Department of Materials Science and Engineering, Tokyo Institute of Technology
| | - Kevin Wylie
- Department of Materials Science and Engineering, Tokyo Institute of Technology
| | - Ryuichi Nakatani
- Department of Materials Science and Engineering, Tokyo Institute of Technology
| | - Yuta Nabae
- Department of Materials Science and Engineering, Tokyo Institute of Technology
| | - Teruaki Hayakawa
- Department of Materials Science and Engineering, Tokyo Institute of Technology
| |
Collapse
|
5
|
Li P, Tan S, Wu Y, Wang C, Watanabe M. Azobenzene-Based Ionic Liquid Switches Phase Separation of Poly( N-isopropylacrylamide) Aqueous Solutions as a Molecular Trigger, Leading to UV Shutdown of Ionic Transport. ACS Macro Lett 2020; 9:825-829. [PMID: 35648533 DOI: 10.1021/acsmacrolett.0c00170] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This paper presents a light-switchable phase separation of poly(N-isopropylacrylamide) (PNIPAm) in aqueous solutions using an azobenzene-based ionic liquid as a molecular trigger. A different UV response was obtained with use of an azobenzene molecular trigger. A UV-induced aggregation of PNIPAm was observed in the current system, which is opposite to that reported for azobenzene-functionalized PNIPAm systems. According to in situ FT-IR, cis-isomers destabilized the hydrogen bonding between water and PNIPAm, contributing to a light-induced aggregation of PNIPAm. This polarity effect was quite similar to salting effects of hofmeister anions on clouding points. Furthermore, a UV shutdown of ion transport of the azobenzene-based ionic liquid was demonstrated with a significant reduction factor of 0.03 at ambient temperature, which can be potentially applied in biotechnology, optoelectronics, and ionic circuits.
Collapse
Affiliation(s)
- Peiqi Li
- Department of Chemical Machinery and Control Engineering, School of Chemical Engineering, Sichuan University, Sichuan 610065, China
| | - Shuai Tan
- Department of Chemical Machinery and Control Engineering, School of Chemical Engineering, Sichuan University, Sichuan 610065, China
| | - Yong Wu
- Department of Chemical Machinery and Control Engineering, School of Chemical Engineering, Sichuan University, Sichuan 610065, China
| | - Caihong Wang
- Department of Chemical Machinery and Control Engineering, School of Chemical Engineering, Sichuan University, Sichuan 610065, China
| | - Masayoshi Watanabe
- Department of Chemistry and Biotechnology, Yokohama National University, Yokohama 240-8501, Japan
| |
Collapse
|
6
|
Spiridon MC, Demazy N, Brochon C, Cloutet E, Hadziioannou G, Aissou K, Fleury G. Optical Alignment of Si-Containing Nanodomains Formed by Photoresponsive Amorphous Block Copolymer Thin Films. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b01551] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Nils Demazy
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, France
| | - Cyril Brochon
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, France
| | - Eric Cloutet
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, France
| | | | - Karim Aissou
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, France
| | - Guillaume Fleury
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, France
| |
Collapse
|
7
|
He X, Wu J, Gao C. Novel amphiphilic graft block azobenzene-containing copolymer with polypeptide block: synthesis, self-assembly and photo-responsive behavior. RSC Adv 2020; 10:5747-5757. [PMID: 35497441 PMCID: PMC9049285 DOI: 10.1039/c9ra10351a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 01/20/2020] [Indexed: 11/23/2022] Open
Abstract
Well-defined amphiphilic graft block azobenzene-containing copolymer with polypeptide block was synthesized via a combination of copper-mediated atom transfer radical polymerization (ATRP), ring-opening polymerization and click reaction. The alkyne-terminated poly[6-(4-methoxy-azobenzene-4′-oxy)hexyl methacrylate] (PAzoMA) was synthesized by ATRP with a bromine-containing alkyne bifunctional initiator, and the azido-terminated poly(γ-2-chloroethyl-l-glutamate) (PCELG) was synthesized by ROP of γ-2-chloroethyl-l-glutamate-N-carboxyanhydride (CELG-NCA), then the two homopolymers were conjugated by click reaction to afford block azobenzene-containing copolymer PAzoMA-b-PCELG. The chloro groups in PCELG block were transformed into azido groups via azide reactions, and the alkyne-terminated MPEG was grafted to the polypeptide block to afford the final product PAzoMA-b-poly((l-glutamate)-graft-methoxy poly(ethylene glycol)) (PAzoMA-b-(PELG-g-MPEG)) by click reaction. Giant vesicles (micrometer size) were obtained from the amphiphilic graft block copolymer PAzoMA-b-(PELG-g-MPEG) through a solution self-assembly due to the rigid PAzoMA chains and polypeptide chains with the α-helical structure. The investigation of the photo-isomerization behavior of PAzoMA-b-(PELG-g-MPEG) in solution and in vesicular solution showed trans–cis isomerization in solution was quicker than that in vesicular solution and azobenzene J-aggregates in the vesicle solution were only observed. The formation mechanisms of the vesicles were also explored. The research results may provide guidelines for the study of complex copolymers containing different types of rigid chains. Giant vesicles (micrometer size) were prepared from novel amphiphilic graft block azobenzene-containing copolymer with polypeptide block synthesized via a combination of ATRP, ROP and click reaction.![]()
Collapse
Affiliation(s)
- Xiaohua He
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Jianxiang Wu
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Chunyan Gao
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| |
Collapse
|
8
|
Tai HT, Lin YC, Ma JY, Lo CT. Hydrogen Bonding-Induced Assembled Structures and Photoresponsive Behavior of Azobenzene Molecule/Polyethylene Glycol Complexes. Polymers (Basel) 2019; 11:E1360. [PMID: 31426429 PMCID: PMC6723479 DOI: 10.3390/polym11081360] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/15/2019] [Accepted: 08/15/2019] [Indexed: 11/22/2022] Open
Abstract
We investigated the self-assembled structures and photoresponsive and crystallization behaviors of supramolecules composed of 4-methoxy-4'-hydroxyazobenzene (Azo) molecules and polyethylene glycol (PEG) that were formed through hydrogen-bonding interactions. The Azo/PEG complexes exhibited the characteristics of photoresponse and crystallization, which originated from Azo and PEG, respectively. When Azo/PEG complexes were dissolved in solvents, hydrogen-bonding interaction hindered the rotation and inversion of mesogens, causing a reduction in the photoisomerization rate compared with the photoisomerization rate of the neat Azo. The confinement of Azo/PEG complexes in thin films further resulted in a substantial decrease in the photoisomerization rate but an increase in the amounts of H-aggregated and J-aggregated mesogens. Regarding PEG crystallization, ultraviolet irradiation of Azo/PEG complexes increased the quantity of high-polarity cis isomers, which improved the compatibility between mesogens and PEG, subsequently increasing the crystallization temperature of PEG. Moreover, the complexation of Azo and PEG induced microphase separation, forming a lamellar morphology. Within the Azo-rich microphases, mesogens aggregated to form tilted monosmectic layers. By contrast, PEG crystallization within the PEG-rich microphases was hard confined, indicating that the domain size of the lamellar morphology was unchanged during PEG crystallization.
Collapse
Affiliation(s)
- Hsin-Tzu Tai
- Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan
| | - Yen-Chun Lin
- Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan
| | - Jing-Yao Ma
- Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan
| | - Chieh-Tsung Lo
- Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan.
| |
Collapse
|
9
|
Zenati A, Thammalangsy S. RAFT synthesis, properties and morphologies via thermal annealing of new azo-based ABA triblock copolymers bearing rigid and soft segments. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2019. [DOI: 10.1080/1023666x.2019.1649056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Athmen Zenati
- Department of Chemistry, Faculty of Natural Sciences, Hanyang University, Seoul, Korea
| | | |
Collapse
|
10
|
Cao H, Li X, Liu Y, Deng H. Synthesis of Liquid Crystalline Block Copolymers Self-assembled into Sub-5 nm Microdomains. J PHOTOPOLYM SCI TEC 2019. [DOI: 10.2494/photopolymer.32.413] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hui Cao
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University
| | - Xuemiao Li
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University
| | - Yuyun Liu
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University
| | - Hai Deng
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University
| |
Collapse
|
11
|
Ndaya D, Bosire R, Kasi RM. Cholesteric–azobenzene liquid crystalline copolymers: design, structure and thermally responsive optical properties. Polym Chem 2019. [DOI: 10.1039/c9py00536f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the synthesis of new functional cholesteric–azobenzene side-chain liquid crystalline copolymers and terpolymers, their temperature-responsive mesophase behavior, and stimuli responsive photonic properties from 400 nm to the near infra-red region of the electromagnetic spectra.
Collapse
Affiliation(s)
- Dennis Ndaya
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
| | - Reuben Bosire
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
| | - Rajeswari M. Kasi
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
- Polymer Program
| |
Collapse
|
12
|
Wei W, Xiong H. Orientation and Morphology Control of the Liquid Crystalline Block Copolymer Thin Film by Liquid Crystalline Solvent. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:15455-15461. [PMID: 30422666 DOI: 10.1021/acs.langmuir.8b03318] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The critical challenge to engineer the morphological structures in the strongly phase-segregated block copolymer thin film is to overcome the preferential wetting of the blocks at the interface and direct the self-assembly process. Herein, we utilize surface activity and selective solvation of a nematic (N) liquid crystalline (LC) solvent, 5CB, to facilely alter the LC anchoring and the orientation of the nanophase separated structures of the smectic-nematic (S-N) LC block copolymer thin film. For the neat S-N diblock copolymer thin film, the nanostructures are parallel aligned. In contrast, with continuous introduction of 5CB into the system, the orientations of the characteristic nanostructures and the morphologies of the LC thin film can be consequently changed, yielding the perpendicularly oriented lamellar or cylindrical structures with the feature size below 10 nm. The homeotropic alignment of the 5CB nematics near the air interface plays a critical role to induce this unique behavior in the S-N/5CB systems, which offers an opportunity to fine-tune the interfacial structures and the morphological patterning in the block copolymer thin film.
Collapse
|
13
|
Ito S, Akiyama H, Sekizawa R, Mori M, Yoshida M, Kihara H. Light-Induced Reworkable Adhesives Based on ABA-type Triblock Copolymers with Azopolymer Termini. ACS APPLIED MATERIALS & INTERFACES 2018; 10:32649-32658. [PMID: 30152226 DOI: 10.1021/acsami.8b09319] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Photocurable adhesives based on polymers and resins are an integral part of different production processes because of their fast curing and local area bonding ability. Recently, dismantlable adhesives have attracted a lot of attention for recycling adherends or replacement of adhesion defects. However, adhesives that allow repeatable bonding and debonding solely by light irradiation, i.e., without heat activation, are lacking. Here, ABA-type triblock copolymers consisting of poly(meth)acrylates bearing an azobenzene moiety (A block) and 2-ethylhexyl (B block) side chains were synthesized and utilized as photocurable adhesives. In contrast to the azo homopolymers, the block copolymer structure and incorporation of the soft middle block actualized a low concentration of the azobenzene moiety and consequently, higher flexibility of the resultant copolymers. This enabled film formation of the azobenzene-based adhesives and light-induced bonding for the first time. On the basis of the photoisomerization of the azobenzene moiety, changes in their viscoelastic property, i.e., softening and hardening, were induced by UV irradiation at 365 nm (50-100 mW cm-2) and green light irradiation at 520 nm (40 mW cm-2), respectively. In fact, two glass substrates were bonded with the self-standing polymer film, which was sequentially softened and hardened upon UV and green light irradiations. They exhibited shear strengths of 1.5-2.0 MPa, and UV irradiation lowered the adhesion strength to 0.5-0.1 MPa. Interestingly, the repeatable bonding and debonding abilities of the polymers were accomplished without loss of the adhesion strength.
Collapse
Affiliation(s)
- Shotaro Ito
- Research Institute for Sustainable Chemistry , National Institute of Advanced Industrial Science and Technology (AIST Chugoku) , 3-11-32 Kagamiyama , Higashihiroshima , Hiroshima 739-0024 , Japan
| | - Haruhisa Akiyama
- Research Institute for Sustainable Chemistry , National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba Central 5, 1-1-1 Higashi , Tsukuba , Ibaraki 305-8565 , Japan
| | - Reiko Sekizawa
- Research Institute for Sustainable Chemistry , National Institute of Advanced Industrial Science and Technology (AIST Chugoku) , 3-11-32 Kagamiyama , Higashihiroshima , Hiroshima 739-0024 , Japan
| | - Miyuki Mori
- Research Institute for Sustainable Chemistry , National Institute of Advanced Industrial Science and Technology (AIST Chugoku) , 3-11-32 Kagamiyama , Higashihiroshima , Hiroshima 739-0024 , Japan
| | - Masaru Yoshida
- Research Institute for Sustainable Chemistry , National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba Central 5, 1-1-1 Higashi , Tsukuba , Ibaraki 305-8565 , Japan
| | - Hideyuki Kihara
- Research Institute for Sustainable Chemistry , National Institute of Advanced Industrial Science and Technology (AIST Chugoku) , 3-11-32 Kagamiyama , Higashihiroshima , Hiroshima 739-0024 , Japan
| |
Collapse
|
14
|
Ban J, Pan L, Shi B, Zhang H. Design, synthesis, and phase behaviors of a novel triphenylene-based side chain liquid crystalline diblock copolymer. NEW J CHEM 2018. [DOI: 10.1039/c8nj02568a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Influence of the weight fraction of PMT6S on the phase behaviors of diblock copolymers.
Collapse
Affiliation(s)
- Jianfeng Ban
- College of Chemical Engineering
- Guangdong University of Petrochemical Technology
- Maoming
- China
| | - Lulu Pan
- College of Chemical Engineering
- Guangdong University of Petrochemical Technology
- Maoming
- China
| | - Bo Shi
- College of Chemical Engineering
- Guangdong University of Petrochemical Technology
- Maoming
- China
| | - Hailiang 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
| |
Collapse
|
15
|
Zenati A, Han YK. Synthesis and Properties of Azo-Based ABC Triblock Copolymers Owning Interaction and Composition Parameters That Influence Their Phase Behaviors. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b02012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Athmen Zenati
- Functional Organic Materials
Laboratory (FOML), Department of Chemistry, Faculty of Natural Sciences, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea
| | - Yang-Kyoo Han
- Functional Organic Materials
Laboratory (FOML), Department of Chemistry, Faculty of Natural Sciences, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea
| |
Collapse
|
16
|
Wang C, Hashimoto K, Tamate R, Kokubo H, Watanabe M. Controlled Sol-Gel Transitions of a Thermoresponsive Polymer in a Photoswitchable Azobenzene Ionic Liquid as a Molecular Trigger. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201710288] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Caihong Wang
- Department of Chemistry and Biotechnology; Yokohama National University; 79-5 Tokiwadai, Hodogaya-ku Yokohama 240-8501 Japan
| | - Kei Hashimoto
- Department of Chemistry and Biotechnology; Yokohama National University; 79-5 Tokiwadai, Hodogaya-ku Yokohama 240-8501 Japan
| | - Ryota Tamate
- Department of Chemistry and Biotechnology; Yokohama National University; 79-5 Tokiwadai, Hodogaya-ku Yokohama 240-8501 Japan
| | - Hisashi Kokubo
- Department of Chemistry and Biotechnology; Yokohama National University; 79-5 Tokiwadai, Hodogaya-ku Yokohama 240-8501 Japan
| | - Masayoshi Watanabe
- Department of Chemistry and Biotechnology; Yokohama National University; 79-5 Tokiwadai, Hodogaya-ku Yokohama 240-8501 Japan
| |
Collapse
|
17
|
Wang C, Hashimoto K, Tamate R, Kokubo H, Watanabe M. Controlled Sol-Gel Transitions of a Thermoresponsive Polymer in a Photoswitchable Azobenzene Ionic Liquid as a Molecular Trigger. Angew Chem Int Ed Engl 2017; 57:227-230. [PMID: 29149465 DOI: 10.1002/anie.201710288] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Indexed: 11/10/2022]
Abstract
Producing ionic liquids (ILs) that function as molecular trigger for macroscopic change is a challenging issue. Photoisomerization of an azobenzene IL at the molecular level evokes a macroscopic response (light-controlled mechanical sol-gel transitions) for ABA triblock copolymer solutions. The A endblocks, poly(2-phenylethyl methacrylate), show a lower critical solution temperature in the IL mixture containing azobenzene, while the B midblock, poly(methyl methacrylate), is compatible with the mixture. In a concentrated polymer solution, different gelation temperatures were observed in it under dark and UV conditions. Light-controlled sol-gel transitions were achieved by a photoresponsive solubility change of the A endblocks upon photoisomerization of the azobenzene IL. Therefore, an azobenzene IL as a molecular switch can tune the self-assembly of a thermoresponsive polymer, leading to macroscopic light-controlled sol-gel transitions.
Collapse
Affiliation(s)
- Caihong Wang
- Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501, Japan
| | - Kei Hashimoto
- Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501, Japan
| | - Ryota Tamate
- Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501, Japan
| | - Hisashi Kokubo
- Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501, Japan
| | - Masayoshi Watanabe
- Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501, Japan
| |
Collapse
|
18
|
Interplay of microphase separation, crystallization and liquid crystalline ordering in crystalline/liquid crystalline block copolymers. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.09.071] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
19
|
Han L, Ma H, Zhu S, Liu P, Shen H, Yang L, Tan R, Huang W, Li Y. Effect of Topology and Composition on Liquid Crystal Order and Self-Assembly Performances Driven by Asynchronously Controlled Grafting Density. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01952] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Li Han
- State Key Laboratory
of Fine
Chemicals, Department of Polymer Science and Engineering, Liaoning
key Laboratory of Polymer Science and Engineering, School of Chemical
Engineering, Dalian University of Technology, Dalian Liaoning 116024, China
| | - Hongwei Ma
- State Key Laboratory
of Fine
Chemicals, Department of Polymer Science and Engineering, Liaoning
key Laboratory of Polymer Science and Engineering, School of Chemical
Engineering, Dalian University of Technology, Dalian Liaoning 116024, China
| | - Siqi Zhu
- State Key Laboratory
of Fine
Chemicals, Department of Polymer Science and Engineering, Liaoning
key Laboratory of Polymer Science and Engineering, School of Chemical
Engineering, Dalian University of Technology, Dalian Liaoning 116024, China
| | - Pibo Liu
- State Key Laboratory
of Fine
Chemicals, Department of Polymer Science and Engineering, Liaoning
key Laboratory of Polymer Science and Engineering, School of Chemical
Engineering, Dalian University of Technology, Dalian Liaoning 116024, China
| | - Heyu Shen
- State Key Laboratory
of Fine
Chemicals, Department of Polymer Science and Engineering, Liaoning
key Laboratory of Polymer Science and Engineering, School of Chemical
Engineering, Dalian University of Technology, Dalian Liaoning 116024, China
| | - Lincan Yang
- State Key Laboratory
of Fine
Chemicals, Department of Polymer Science and Engineering, Liaoning
key Laboratory of Polymer Science and Engineering, School of Chemical
Engineering, Dalian University of Technology, Dalian Liaoning 116024, China
| | - Rui Tan
- State Key Laboratory
of Fine
Chemicals, Department of Polymer Science and Engineering, Liaoning
key Laboratory of Polymer Science and Engineering, School of Chemical
Engineering, Dalian University of Technology, Dalian Liaoning 116024, China
| | - Wei Huang
- State Key Laboratory
of Fine
Chemicals, Department of Polymer Science and Engineering, Liaoning
key Laboratory of Polymer Science and Engineering, School of Chemical
Engineering, Dalian University of Technology, Dalian Liaoning 116024, China
| | - Yang Li
- State Key Laboratory
of Fine
Chemicals, Department of Polymer Science and Engineering, Liaoning
key Laboratory of Polymer Science and Engineering, School of Chemical
Engineering, Dalian University of Technology, Dalian Liaoning 116024, China
| |
Collapse
|
20
|
Wei W, You D, Xiong H. Thermotropic and Lyotropic Transitions of Concentrated Solutions of Liquid Crystalline Block Copolymers in a Liquid Crystalline Solvent. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01669] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Wei Wei
- Department
of Polymer Science, School of Chemistry and Chemical Engineering and ‡Center for Soft
Matter and Interdisciplinary Sciences, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Donglei You
- Department
of Polymer Science, School of Chemistry and Chemical Engineering and ‡Center for Soft
Matter and Interdisciplinary Sciences, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Huiming Xiong
- Department
of Polymer Science, School of Chemistry and Chemical Engineering and ‡Center for Soft
Matter and Interdisciplinary Sciences, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| |
Collapse
|
21
|
Wei W, Wu Z, Huang M, Hsu CH, Liu Y, Zhang X, Xiong H. Discovery of hierarchical superstructures in block copolymers by integrating different liquid crystalline interactions. SOFT MATTER 2017; 13:2583-2589. [PMID: 28294274 DOI: 10.1039/c7sm00349h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Hierarchically assembled superstructures of block copolymers are discovered by introduction of the competition of anisotropy attributed from liquid crystalline ordering and nano-phase separation. When the two prototypical fields of liquid crystals (LCs), smectics (S) and nematics (N), are adjoined within the framework of diblock copolymers (S-N) in a variety of precisely tuned compositions, a novel class of superlattices with an interdigitated array of smectic layers between the nearest lamellae or cylinders are observed. This generates unconventional nano-phase separated orthorhombic (Lo) and pseudo-hexagonal (Ho) structures, where the stretched N tethers, projected regularly from the S layers, could transfer the local organization and guide the correlated assembly. This type of superstructure is highly frustrated in reversed cylindrical morphology and absent in S-coil diblock copolymers. The collective interplay of the S and N interactions with nano-phase separation induces the formation of the final complex yet equilibrium structures, providing unprecedented opportunities towards exquisite structural diversity.
Collapse
Affiliation(s)
- Wei Wei
- Department of Polymer Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zhichao Wu
- Department of Polymer Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Mingjun Huang
- Department of Polymer Science, the University of Akron, Akron, Ohio 44325, USA
| | - Chih-Hao Hsu
- Department of Polymer Science, the University of Akron, Akron, Ohio 44325, USA
| | - Yu Liu
- Department of Polymer Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Xinlin Zhang
- Department of Polymer Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Huiming Xiong
- Department of Polymer Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China and Center for Soft Matter and Interdisciplinary Sciences, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.
| |
Collapse
|
22
|
Beppu K, Nagashima Y, Hara M, Nagano S, Seki T. Photoalignment of Vertically Oriented Microphase Separated Lamellae in LC-LC Diblock Copolymer Thin Film. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201600659] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 11/15/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Koichiro Beppu
- Department of Molecular Design and Engineering; Graduate School of Engineering; Nagoya University; Furo-cho, Chikusa Nagoya 464-8603 Japan
| | - Yuki Nagashima
- Department of Molecular Design and Engineering; Graduate School of Engineering; Nagoya University; Furo-cho, Chikusa Nagoya 464-8603 Japan
| | - Mituo Hara
- Department of Molecular Design and Engineering; Graduate School of Engineering; Nagoya University; Furo-cho, Chikusa Nagoya 464-8603 Japan
| | - Shusaku Nagano
- Nagoya University Venture Business Laboratory; Furo-cho, Chikusa Nagoya 464-8603 Japan
| | - Takahiro Seki
- Department of Molecular Design and Engineering; Graduate School of Engineering; Nagoya University; Furo-cho, Chikusa Nagoya 464-8603 Japan
| |
Collapse
|
23
|
Wang C, Ma X, Kitazawa Y, Kobayashi Y, Zhang S, Kokubo H, Watanabe M. From Macromolecular to Small-Molecular Triggers: Facile Method toward Photoinduced LCST Phase Behavior of Thermoresponsive Polymers in Mixed Ionic Liquids Containing an Azobenzene Moiety. Macromol Rapid Commun 2016; 37:1960-1965. [DOI: 10.1002/marc.201600360] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 07/21/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Caihong Wang
- Department of Chemistry and Biotechnology; Yokohama National University; 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan
| | - Xiaofeng Ma
- Department of Chemistry and Biotechnology; Yokohama National University; 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan
| | - Yuzo Kitazawa
- Department of Chemistry and Biotechnology; Yokohama National University; 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan
| | - Yumi Kobayashi
- Department of Chemistry and Biotechnology; Yokohama National University; 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan
| | - Shiguo Zhang
- Department of Chemistry and Biotechnology; Yokohama National University; 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan
| | - Hisashi Kokubo
- Department of Chemistry and Biotechnology; Yokohama National University; 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan
| | - Masayoshi Watanabe
- Department of Chemistry and Biotechnology; Yokohama National University; 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan
| |
Collapse
|
24
|
Ezhov AA, Derikov YI, Shandryuk GA, Chernikova EV, Abramchyuk SS, Merekalov AS, Bondarenko GN, Tal’roze RV. Composites based on liquid-crystalline polymers with terminal functional groups and inorganic nanoparticles. POLYMER SCIENCE SERIES C 2016. [DOI: 10.1134/s1811238216010033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
25
|
Wei R, Ma J, Zhang H, He Y. Synthesis, characterization, and photo-responsive properties of Y-shaped amphiphilic azo triblock copolymer. J Appl Polym Sci 2016. [DOI: 10.1002/app.43695] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Renbo Wei
- Research Branch of Advanced Functional Materials, School of Microelectronics and Solid-State Electronics, High Temperature Resistant Polymer and Composites, Key Laboratory of Sichuan Province; University of Electronic Science and Technology of China; Chengdu 610054 China
- Department of Chemical Engineering, Key Laboratory of Advanced Materials (MOE); Tsinghua University; Beijing 100084 China
| | - Jinyi Ma
- Sichuan Institute of Piezoelectric and Acoustooptic Technology; Chongqing 400060 China
| | - Hongxing Zhang
- Research Branch of Advanced Functional Materials, School of Microelectronics and Solid-State Electronics, High Temperature Resistant Polymer and Composites, Key Laboratory of Sichuan Province; University of Electronic Science and Technology of China; Chengdu 610054 China
| | - Yaning He
- Department of Chemical Engineering, Key Laboratory of Advanced Materials (MOE); Tsinghua University; Beijing 100084 China
| |
Collapse
|
26
|
Bugakov M, Boiko N, Shibaev V. Functionally integrated liquid crystalline photochromic triple block copolymer with locally light- and thermal-controllable sub-blocks. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/polb.24063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Miron Bugakov
- Faculty of Chemistry; Lomonosov Moscow State University; Leninskie Gory-1 Moscow 119991 Russia
| | - Natalia Boiko
- Faculty of Chemistry; Lomonosov Moscow State University; Leninskie Gory-1 Moscow 119991 Russia
| | - Valery Shibaev
- Faculty of Chemistry; Lomonosov Moscow State University; Leninskie Gory-1 Moscow 119991 Russia
| |
Collapse
|
27
|
Nagano S. Inducing Planar Orientation in Side-Chain Liquid-Crystalline Polymer Systems via Interfacial Control. CHEM REC 2016; 16:378-92. [PMID: 26775770 PMCID: PMC4770442 DOI: 10.1002/tcr.201500232] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Indexed: 11/21/2022]
Abstract
For efficient photoresponses of liquid-crystal (LC) azobenzene (Az) polymer systems, planar LC orientation of the Az mesogenic group is required because the light irradiation process usually occurs with normal incidence to the film surface. However, LC molecules with a rodlike shape tend to orient perpendicularly to the film surface according to the excluded volume effect theory. This review introduces new approaches for inducing planar orientation in side-chain LC Az polymer films via interface and surface molecular designs. The planar orientation offers efficient in-plane photoalignment and photoswitching to hierarchical LC architectures from molecular LC mesogens and LC phases to mesoscopic microphase-separated structures. These approaches are expected to provide new concepts and possibilities in new LC polymer devices.
Collapse
Affiliation(s)
- Shusaku Nagano
- Nagoya University Venture Business Laboratory, Furo-cho Chikusa, Nagoya, Japan
| |
Collapse
|
28
|
Pan S, Mu B, Wu B, Shi Z, Chen D. Side-Chain Liquid Crystalline Polymers: Controlled Synthesis and Hierarchical Structure Characterization. LIQUID CRYSTALLINE POLYMERS 2016:131-172. [DOI: 10.1007/978-3-319-22894-5_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
|
29
|
Ezhov AA, Derikov YI, Chernikova EV, Abramchuk SS, Shandryuk GA, Merekalov AS, Panov VI, Talroze RV. Monochelic copolymer as a matrix for cholesteric composites with gold nanoparticles. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.09.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
30
|
Synthesis, photochemical properties, and self-assembly of diblock copolymer bearing azobenzene moieties. J Taiwan Inst Chem Eng 2015. [DOI: 10.1016/j.jtice.2015.03.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
31
|
Fu S, Zhao Y. Orientation of Azobenzene Mesogens in Side-Chain Liquid Crystalline Polymers: Interplay between Effects of Mechanical Stretching, Photoisomerization and Thermal Annealing. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01311] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Shangyi Fu
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Quebec Canada J1K 2R1
| | - Yue Zhao
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Quebec Canada J1K 2R1
| |
Collapse
|
32
|
Boiko NI, Bugakov MA, Chernikova EV, Piryazev AA, Odarchenko YI, Ivanov DA, Shibaev VP. Liquid crystalline side-chain triblock copolymers consisting of a nematic central subblock edged by photochromic azobenzene-containing fragments: their synthesis, structure and photooptical behaviour. Polym Chem 2015. [DOI: 10.1039/c5py00555h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis, phase and photooptical properties of new symmetrical fully liquid crystalline triblock copolymers.
Collapse
Affiliation(s)
- N. I. Boiko
- Faculty of Chemistry
- Moscow State University
- Moscow
- Russia
| | - M. A. Bugakov
- Faculty of Chemistry
- Moscow State University
- Moscow
- Russia
| | | | - A. A. Piryazev
- Faculty of Fundamental Physical and Chemical Engineering
- Lomonosov Moscow State University (MSU)
- 119991 Moscow
- Russia
| | - Ya. I. Odarchenko
- Faculty of Fundamental Physical and Chemical Engineering
- Lomonosov Moscow State University (MSU)
- 119991 Moscow
- Russia
| | - D. A. Ivanov
- Faculty of Fundamental Physical and Chemical Engineering
- Lomonosov Moscow State University (MSU)
- 119991 Moscow
- Russia
- Institut de Sciences des Matériaux de Mulhouse
| | - V. P. Shibaev
- Faculty of Chemistry
- Moscow State University
- Moscow
- Russia
| |
Collapse
|
33
|
Tong ZZ, Xue JQ, Wang RY, Huang J, Xu JT, Fan ZQ. Hierarchical self-assembly, photo-responsive phase behavior and variable tensile property of azobenzene-containing ABA triblock copolymers. RSC Adv 2015. [DOI: 10.1039/c4ra12844c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of triblock copolymers with liquid crystalline (LC) poly{6-[4-(4-methoxyphenylazo)phenoxy]hexyl methacrylate} (PMMAZO) as the end blocks and rubbery poly(n-butyl acrylate) (PnBA) as the midblock were synthesized.
Collapse
Affiliation(s)
- Zai-Zai Tong
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Jin-Qiao Xue
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Rui-Yang Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Jie Huang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Jun-Ting Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Zhi-Qiang Fan
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science & Engineering
- Zhejiang University
- Hangzhou 310027
- China
| |
Collapse
|
34
|
Manipulating ordered structure of ionic liquid crystalline polymers through tuning the alkyl spacer length. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.10.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
35
|
Cao Z, Qiu F, Cao G, Guan Y, Zhuang L, Ye F, Yang D. Preparation of a main-chain azo polyurethane-urea and its application of Y-branch and Mach–Zehnder thermo-optic switch. Polym Bull (Berl) 2014. [DOI: 10.1007/s00289-014-1275-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
36
|
Rajasekhar T, Trinadh M, Sahoo R, Dhara S, Sainath AVS. Synthesis and characterization of novel ABA-type azobenzene-containing tri-block copolymers from telechelic polystyrene. Des Monomers Polym 2014. [DOI: 10.1080/15685551.2014.971396] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Affiliation(s)
- Tota Rajasekhar
- Polymers and Functional Materials Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India
| | - Mummuluri Trinadh
- Polymers and Functional Materials Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India
| | - Rasmita Sahoo
- School of Physics, University of Hyderabad, Hyderabad 500046, India
| | - Surajit Dhara
- School of Physics, University of Hyderabad, Hyderabad 500046, India
| | - Annadanam V. Sesha Sainath
- Polymers and Functional Materials Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India
| |
Collapse
|
37
|
Wei W, Liu Y, Xiong H. Hierarchical Nanostructures and Self-Assemblies in Smectic-Nematic Liquid Crystalline Diblock Copolymers. ACS Macro Lett 2014; 3:892-895. [PMID: 35596355 DOI: 10.1021/mz500460j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Coexistence of smectic and nematic orders in 3D curvaceous bicontineous cubic or hexagonal hierarchical structures is observed in a novel class of nanophase separated, flexible double liquid crystalline (LC) diblock copolymers of different molecular weights (MWs) but similar compositions, obtained via sequential anionic polymerization. The diblock copolymer of higher MW exhibits an exceptional order-order transition (OOT) from lamellae (Lam) to hexagonal-packed cylinder (HPC) upon nematic ordering. In contrast, the polymer with lower MW forms a thermodynamically stable, ordered gyroid structure, interwining with LC defects on nanoscale. Delicate balance of collective LC interactions and geometric frustration dictates this unique behavior, which offers a genuine way to fine-tune 2D and 3D complex structures with sub-10 nm feature sizes.
Collapse
Affiliation(s)
- Wei Wei
- Department of Polymer Science,
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Yu Liu
- Department of Polymer Science,
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Huiming Xiong
- Department of Polymer Science,
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| |
Collapse
|
38
|
Yang PC, Chen HC, Wen HW, Wu PI. Preparation and self-assembly of stimuli-responsive azobenzene-containing diblock copolymers through microwave-assisted RAFT polymerization. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27360] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Po-Chih Yang
- Department of Chemical Engineering and Materials Science; Yuan Ze University; Chung-Li 32003 Taoyuan Taiwan Republic of China
| | - Hsin-Cheng Chen
- Department of Chemical Engineering and Materials Science; Yuan Ze University; Chung-Li 32003 Taoyuan Taiwan Republic of China
| | - Hua-Wen Wen
- Department of Chemical Engineering and Materials Science; Yuan Ze University; Chung-Li 32003 Taoyuan Taiwan Republic of China
| | - Po-I Wu
- Department of Chemical Engineering and Materials Science; Yuan Ze University; Chung-Li 32003 Taoyuan Taiwan Republic of China
| |
Collapse
|
39
|
Seki T. New strategies and implications for the photoalignment of liquid crystalline polymers. Polym J 2014. [DOI: 10.1038/pj.2014.68] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
40
|
|
41
|
Seki T. Meso- and microscopic motions in photoresponsive liquid crystalline polymer films. Macromol Rapid Commun 2013; 35:271-90. [PMID: 24343758 DOI: 10.1002/marc.201300763] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Revised: 11/13/2013] [Indexed: 11/05/2022]
Abstract
Photoresponsive azobenzene-containing systems ranging from molecular to macroscopic material levels have greatly been increasing their significance in materials chemistry. This review focuses on the studies on light induced or triggered motions in azobenzene liquid crystalline (LC) polymer films at mesoscopic and microscopic levels. Due to the cooperative nature of liquid crystalline materials, highly efficient photoalignment and photo-triggered migrating motions are realized in mostly repeated manners. Here, recent advances in surface-grafted LC polymer brushes, LC block copolymer films, and LC polymer films that exhibit mass migrations are overviewed. Such newly emerged photoresponsive systems are expected to provide new possibilities and applications in polymer thin film technologies.
Collapse
Affiliation(s)
- Takahiro Seki
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya, 464-8603, Japan
| |
Collapse
|
42
|
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]
|
43
|
|
44
|
Yu Z, Xiao-gong W. RECENT DEVELOPMENTS IN LIQUID CRYSTALLINE AZO BLOCK COPOLYMERS:SELF-ASSEMBLY AND PHOTORESPONSIVE PROPERTIES. ACTA POLYM SIN 2013. [DOI: 10.3724/sp.j.1105.2013.13109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
45
|
Tong Y, Chen L, He X, Chen Y. Mesogen-controlled ion channel of star-shaped hard-soft block copolymers for solid-state lithium-ion battery. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26847] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yongfen Tong
- Department of Chemistry; Institute of Polymers; Nanchang University; Nanchang 330031 People's Republic of China
- School of Environmental and Chemical Engineering; Nanchang Hangkong University; Nanchang 330063 People's Republic of China
| | - Lie Chen
- Department of Chemistry; Institute of Polymers; Nanchang University; Nanchang 330031 People's Republic of China
| | - Xiaohui He
- Department of Chemistry; Institute of Polymers; Nanchang University; Nanchang 330031 People's Republic of China
| | - Yiwang Chen
- Department of Chemistry; Institute of Polymers; Nanchang University; Nanchang 330031 People's Republic of China
| |
Collapse
|
46
|
Wen GH, Zhang B, Xie HL, Liu X, Zhong GQ, Zhang HL, Chen EQ. Microphase Separation Facilitating and Stabilizing Hierarchical Segment Self-Assembly of Combined Main-Chain/Side-Chain Liquid Crystalline Polymer in Diblock Copolymer. Macromolecules 2013. [DOI: 10.1021/ma400325g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Guo-Hui Wen
- Key Laboratory of Special Functional Polymer Materials of Hunan Province,
Key Laboratory of Advanced Functional Polymer Materials of Colleges
and Universities of Hunan Province and Key Lab of Environment-friendly
Chemistry and Application in Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan Province,
China
| | - Ben Zhang
- Beijing National
Laboratory for Molecular Sciences, College of Chemistry and Molecular
Engineering, Peking University, Beijing
100871, China
| | - He-Lou Xie
- Key Laboratory of Special Functional Polymer Materials of Hunan Province,
Key Laboratory of Advanced Functional Polymer Materials of Colleges
and Universities of Hunan Province and Key Lab of Environment-friendly
Chemistry and Application in Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan Province,
China
| | - Xin Liu
- Beijing National
Laboratory for Molecular Sciences, College of Chemistry and Molecular
Engineering, Peking University, Beijing
100871, China
| | - Guan-Qun Zhong
- Key Laboratory of Special Functional Polymer Materials of Hunan Province,
Key Laboratory of Advanced Functional Polymer Materials of Colleges
and Universities of Hunan Province and Key Lab of Environment-friendly
Chemistry and Application in Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan Province,
China
| | - Hai-Liang Zhang
- Key Laboratory of Special Functional Polymer Materials of Hunan Province,
Key Laboratory of Advanced Functional Polymer Materials of Colleges
and Universities of Hunan Province and Key Lab of Environment-friendly
Chemistry and Application in Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan Province,
China
| | - Er-Qiang Chen
- Beijing National
Laboratory for Molecular Sciences, College of Chemistry and Molecular
Engineering, Peking University, Beijing
100871, China
| |
Collapse
|
47
|
Bugakov MA, Boiko NI, Chernikova EV, Shibaev VP. Synthesis of photochromic liquid-crystalline triblock copolymers by pseudoliving reversible addition-fragmentation chain-transfer polymerization. POLYMER SCIENCE SERIES B 2013. [DOI: 10.1134/s1560090413050011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
48
|
Sun W, He X, Liao X, Lin S, Huang W, Xie M. Synthesis of azobenzene-containing side chain liquid crystalline diblock copolymers using RAFT polymerization and photo-responsive behavior. J Appl Polym Sci 2013. [DOI: 10.1002/app.39407] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wuqiong Sun
- Department of Chemistry; East China Normal University; 500 Dongchuan Road; Shanghai; 200241; China
| | - Xiaohua He
- Department of Chemistry; East China Normal University; 500 Dongchuan Road; Shanghai; 200241; China
| | - Xiaojuan Liao
- Department of Chemistry; East China Normal University; 500 Dongchuan Road; Shanghai; 200241; China
| | - Shaoliang Lin
- Shanghai Key Laboratory of Advanced Polymer Materials, School of Materials Science and Engineering, East China University of Science and Technology; Shanghai; 200237; China
| | - Wei Huang
- Department of Chemistry; East China Normal University; 500 Dongchuan Road; Shanghai; 200241; China
| | - Meiran Xie
- Department of Chemistry; East China Normal University; 500 Dongchuan Road; Shanghai; 200241; China
| |
Collapse
|
49
|
Zhu Y, Wang X. Synthesis and photoresponsive properties of two liquid crystalline polymers bearing branched azobenzene-containing side chains. Polym Chem 2013. [DOI: 10.1039/c3py00757j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
50
|
He X, Gao C, Sun W, Huang W, Lin S, Yan D. Synthesis and photoresponsive behavior of azobenzene-containing side-chain liquid crystalline diblock polymers with polypeptide block. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26472] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|