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Percec V, Xiao Q. Helical Chirality of Supramolecular Columns and Spheres Self‐Organizes Complex Liquid Crystals, Crystals, and Quasicrystals. Isr J Chem 2021. [DOI: 10.1002/ijch.202100057] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Virgil Percec
- Roy & Diana Vagelos Laboratories Department of Chemistry University of Pennsylvania Philadelphia Pennsylvania 19104-6323 United States
| | - Qi Xiao
- Roy & Diana Vagelos Laboratories Department of Chemistry University of Pennsylvania Philadelphia Pennsylvania 19104-6323 United States
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Pei J, Wei W, Li B, Huang J, Chen XF. Composition-dependent phase transformation in side-chain liquid crystalline copolymers with mesogenic groups at different substituent positions. SOFT MATTER 2021; 17:4594-4603. [PMID: 33949604 DOI: 10.1039/d1sm00161b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Copolymerization is an effective approach to tailor the thermal and structural properties of liquid crystalline polymer materials, which is essential for various applications. In this work, two series of polynorbornene copolymers, A-r-B and A-r-C, with the biphenyl mesogenic side group at different substituent positions were synthesized via ring-opening metathesis polymerization in various compositions. The corresponding homopolymers A and C are liquid crystalline polymers, exhibiting an oblique columnar structure (Colob/p2) and lamellar structure, respectively, while homopolymer B is amorphous. The composition-dependent phase behaviors of copolymers were systematically studied with the combination of SAXS, GISAXS, AFM, DSC and POM techniques. With increasing molar content of A (xA), the self-organzied structure of copolymer A-r-B follows the sequence from amorphous to lamellar, undulated lamellar, and Colob/p2 structures, and that of A-r-C follows the sequence of lamellar, undulated lamellar, and Colob/p2 structures. Then, copolymers with undulated lamellar or Colob/p2 structures tend to enter lamellar phase first at higher temperature and then change to the isotropic state during heating. The composition-induced transition from lamellar to supramolecular columnar organization is somewhat reminiscent of block copolymers and other soft matter systems that can form ordered structures. Furthermore, the subsitituent number and position of rigid mesogenic units in the side chain can further modify the morphologies of self-organized phases.
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Affiliation(s)
- Jiwei Pei
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
| | - Wenjing Wei
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
| | - Bian Li
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
| | - Jundan Huang
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
| | - Xiao-Fang Chen
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
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Vanti L, Mohd Alauddin S, Zaton D, Aripin NFK, Giacinti-Baschetti M, Imrie CT, Ribes-Greus A, Martinez-Felipe A. Ionically conducting and photoresponsive liquid crystalline terpolymers: Towards multifunctional polymer electrolytes. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.08.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Zhang L, Yao W, Gao Y, Zhang C, Yang H. Polysiloxane-Based Side Chain Liquid Crystal Polymers: From Synthesis to Structure⁻Phase Transition Behavior Relationships. Polymers (Basel) 2018; 10:E794. [PMID: 30960718 PMCID: PMC6403854 DOI: 10.3390/polym10070794] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/11/2018] [Accepted: 07/11/2018] [Indexed: 11/16/2022] Open
Abstract
Organosilicon polymer materials play an important role in certain applications due to characteristics of much lower glass transition temperatures (Tg), viscosities, surface energy, as well as good mechanical, thermal stabilities, and insulation performance stemming from the higher bond energy and the larger bond angles of the adjacent silicon-oxygen bond. This critical review highlights developments in the synthesis, structure, and phase transition behaviors of polysiloxane-based side chain liquid crystal polymers (PSCLCPs) of linear and cyclic polysiloxanes containing homopolymers and copolymers. Detailed synthetic strategies are elaborated, and the relationship between molecular structures and liquid crystalline phase transition behaviors is systematically discussed, providing theoretical guidance on the molecular design of the materials.
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Affiliation(s)
- Lanying Zhang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China.
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, China.
| | - Wenhuan Yao
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
| | - Yanzi Gao
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China.
| | - Cuihong Zhang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China.
| | - Huai Yang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China.
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, China.
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Zhao W, Lin BP, Zhang XQ, Sun Y, Yang H. Polysiloxane side-chain liquid crystalline polymers prepared by alkyne hydrosilylation. CHINESE JOURNAL OF POLYMER SCIENCE 2015. [DOI: 10.1007/s10118-015-1697-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Chen S, Qiu J, Xie HL, Zhang HL. Synthesis and tailoring phase behavior of mesogen jacketed liquid crystalline copolymers based on 2, 5-bis[(4-alkoxyphenyl)oxycarbonyl]styrenes. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26660] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sheng Chen
- 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
| | - Jun Qiu
- 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
| | - 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
| | - 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
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Yang H, Liu MX, Yao YW, Tao PY, Lin BP, Keller P, Zhang XQ, Sun Y, Guo LX. Polysiloxane-Based Liquid Crystalline Polymers and Elastomers Prepared by Thiol–Ene Chemistry. Macromolecules 2013. [DOI: 10.1021/ma400462e] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Hong Yang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Ming-Xia Liu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yue-Wei Yao
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Ping-Yang Tao
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Bao-Ping Lin
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Patrick Keller
- Institut Curie, Centre De Recherche, CNRS
UMR 168, Université Pierre et Marie Curie, 26 rue d’Ulm 75248 Paris Cedex 05, France
| | - Xue-Qin Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Ying Sun
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Ling-Xiang Guo
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
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Pandey S, Kolli B, Mishra SP, Samui AB. Siloxane polymers containing azo moieties synthesized by click chemistry for photo responsive and liquid crystalline applications. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.25885] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ahn SK, Deshmukh P, Gopinadhan M, Osuji CO, Kasi RM. Side-chain liquid crystalline polymer networks: exploiting nanoscale smectic polymorphism to design shape-memory polymers. ACS NANO 2011; 5:3085-3095. [PMID: 21401122 DOI: 10.1021/nn200211c] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Herein, we investigate the influence of nanoscale smectic polymorphism within end-on fixed side-chain liquid crystalline polymer networks (SCLCNs) on macroscopic shape-memory and actuation properties. We have synthesized a series of SCLC-type linear (TP-n) and cross-linked random terpolymers (XL-TP-n) with varying length of flexible methylene spacers (n = 5, 10, and 15) between polynorbornene main-chain and cholesteryl ester side-chains. Thermal and mechanical analyses by differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) confirm a glass transition (T(g)), a clearing temperature (T(cl)), and a network structure in the XL-TP-n. Detailed structural investigation conducted using wide-angle and small-angle X-ray scattering (WAXS and SAXS) at room temperature proves self-assembled smectic A (SmA) polymorphism of the XL-TP-n which evolves from non-interdigitated bilayer (SmA(2)) for n = 5 to mixed layers of monolayer-like highly interdigitated layer (SmA(1)) and SmA(2) for n = 10 and to SmA(1) for n = 15. In addition, TP10 at temperatures above 60 °C interestingly shows transformation of SmA structure from mixed layer (SmA(1) + SmA(2)) to interdigitated structure (SmA(d)). The SmA polymorphism developed in TP-n during shape-memory cycles (SMCs) significantly impacts the ultimate strain responses. A mechanism for the unique interdigitation-based thermostrictive behavior is proposed. More importantly, this new actuation mechanism observed in these XL-TP-n can be exploited to develop intelligent thermal actuators.
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Affiliation(s)
- Suk-kyun Ahn
- Polymer Program, The Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, USA
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Zhang L, Chen S, Zhao H, Shen Z, Chen X, Fan X, Zhou Q. Synthesis and Properties of a Series of Mesogen-Jacketed Liquid Crystalline Polymers with Polysiloxane Backbones. Macromolecules 2010. [DOI: 10.1021/ma100847g] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lanying Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Si Chen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Han Zhao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhihao Shen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xiaofang Chen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xinghe Fan
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Qifeng Zhou
- Beijing National Laboratory for Molecular Sciences, 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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Rosen BM, Wilson CJ, Wilson DA, Peterca M, Imam MR, Percec V. Dendron-Mediated Self-Assembly, Disassembly, and Self-Organization of Complex Systems. Chem Rev 2009; 109:6275-540. [DOI: 10.1021/cr900157q] [Citation(s) in RCA: 1066] [Impact Index Per Article: 71.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Brad M. Rosen
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Christopher J. Wilson
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Daniela A. Wilson
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Mihai Peterca
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Mohammad R. Imam
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Virgil Percec
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
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Zhang Q, Bazuin CG. Liquid Crystallinity and Other Properties in Complexes of Cationic Azo-Containing Surfactomesogens with Poly(styrenesulfonate). Macromolecules 2009. [DOI: 10.1021/ma9002566] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qian Zhang
- Département de chimie, Centre de recherche sur les matériaux auto-assemblés (CRMAA/CSACS), Université de Montréal, C.P. 6128, succursale Centre-Ville, Montréal (QC), Canada H3C 3J7
| | - C. Geraldine Bazuin
- Département de chimie, Centre de recherche sur les matériaux auto-assemblés (CRMAA/CSACS), Université de Montréal, C.P. 6128, succursale Centre-Ville, Montréal (QC), Canada H3C 3J7
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Percec V, Imam MR, Peterca M, Cho WD, Heiney PA. Self-Assembling Dendronized Dendrimers. Isr J Chem 2009. [DOI: 10.1560/ijc.49.1.55] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Synthesis and mesophase behaviors of 2,5-disubstituted styrene-based random copolymers: Effect of difference in side-group length on liquid crystallinity. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.05.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Zheng Z, Sun Y, Xu J, Chen B, Su Z, Zhang Q. Synthesis and chiroptical properties of liquid crystalline copolymers containing azobenzene chromophores. POLYM INT 2007. [DOI: 10.1002/pi.2229] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Inagi S, Naka K, Chujo Y. Functional polymers based on electron-donating TTF and derivatives. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b708640g] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Percec V, Wang CS. Synthesis and Characterization of Polymethacrylates, Polyacrylates, and Poly(Methylsiloxane)S Containing 4-[S(-)-2-Methyl-1-Butoxy]-4′-(ω-Alkanyl-1-OXY)-α-Methylstilbene Side Groups. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2006. [DOI: 10.1080/10101329208052155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Cook AG, Imrie CT. Side-Group Liquid Crystal Copolymers Containing Nonmesogenic Units: Dependence of the Thermal Behaviour upon Composition. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259908023760] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Andrew G. Cook
- a Department of Chemistry , University of Aberdeen , Meston Walk, Old Aberdeen , AB24 3UE , Scotland
| | - Corrie T. Imrie
- a Department of Chemistry , University of Aberdeen , Meston Walk, Old Aberdeen , AB24 3UE , Scotland
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Juang TM, Leu YJ, Hsu CS. Synthesis and Characterization of Chiral Smectic Side-Chain Liquid Crystalline Polysiloxanes Containing 2,5-Disubstituted-1,3-Dioxane Based Mesogenic Side Groups. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259308030138] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Affiliation(s)
- Masahiko Iyoda
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan.
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Pelzl G, Diele S, Lose D, Ostrovski BI, Weissflog W. The Influence of the Shape and the Incompatibility of Molecular Moieties on the Structure of Smectic Mesophases. CRYSTAL RESEARCH AND TECHNOLOGY 1997. [DOI: 10.1002/crat.2170320110] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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22
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Frenzel S, Arndt S, Gregorious RM, Müllen K. Synthesis of tetrathiafulvalene polymers. ACTA ACUST UNITED AC 1995. [DOI: 10.1039/jm9950501529] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Percec V, Lee M, Ackerman C. Molecular engineering of liquid crystal polymers by living polymerization: 9. Living cationic polymerization of 5-[(4-cyano-4′-biphenyl)oxy]pentyl vinyl ether and 7-[(4-cyano-4′-biphenyl)oxy]heptyl vinyl ether, and the mesomorphic behaviour of the resulting polymers. POLYMER 1992. [DOI: 10.1016/0032-3861(92)90325-q] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Percec V, Lee M. Molecular engineering of liquid-crystalline polymers by living polymerization. Part 20.—Synthesis and characterization of binary copolymers of [11-(4′-cyanobiphenyl-4-yloxy)undecanyloxy]ethylene with n-butyl vinyl ether, and of 2-[(4′-cyanobiphenyl-4-yl)oxy]ethyl vinyl ether with (n-butoxy)ethylene. ACTA ACUST UNITED AC 1992. [DOI: 10.1039/jm9920200617] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Percec V, Wang CS. Synthesis and Characterization of Poly(methylsiloxane)S Containing 4-[S(-)-2-Methyl-1 -Butoxy1-4′ -[p-(ω-alkan-l-yloxy)benzoyloxy]-α-methylstilbene Side Groups. ACTA ACUST UNITED AC 1991. [DOI: 10.1080/00222339108054051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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26
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Hsu CS, Lu YH. Synthesis and mesomorphic behavior of poly(methylsiloxane)s containing trans-cyclohexane-based mesogenic side groups. Polym Bull (Berl) 1991. [DOI: 10.1007/bf00310788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Percec V, Tomazos D, Feiring AE. Semifluorinated polymers: 1. Synthesis and characterization of side chain liquid crystalline polymers containing semifluorinated oligooxyethylene based flexible spacers. POLYMER 1991. [DOI: 10.1016/0032-3861(91)90382-s] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Percec V, Zheng Q, Lee M. Molecular engineering of liquid-crystalline polymers by living polymerization. Part 13.—Synthesis and living cationic polymerization of (S)-(–)-2-methylbutyl 4′-(ω-vinyloxy)alkoxybiphenyl-4-carboxylate with undecanyl and hexyl alkyl groups. ACTA ACUST UNITED AC 1991. [DOI: 10.1039/jm9910100611] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Percec V, Wang CS, Lee M. Molecular engineering of liquid crystal polymers by living polymerization. Polym Bull (Berl) 1991. [DOI: 10.1007/bf00299343] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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30
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Molecular engineering of liquid crystal polymers by living polymerization: 5. Synthesis and mesomorphic behaviour of poly{2-[(4-cyano-4′-biphenyl)oxy]ethyl vinyl ether-co-8-[(4-cyano-4′-biphenyl)oxy]octyl vinyl ether}. POLYMER 1991. [DOI: 10.1016/0032-3861(91)90120-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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31
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Percec V, Tomazos D. Can the rigidity of a side-chain liquid-crystalline polymer backbone influence the mechanism of distortion of its random-coil conformation? POLYMER 1990. [DOI: 10.1016/0032-3861(90)90182-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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