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Lago-Silva M, Fernández-Míguez M, Rodríguez R, Quiñoá E, Freire F. Stimuli-responsive synthetic helical polymers. Chem Soc Rev 2024; 53:793-852. [PMID: 38105704 DOI: 10.1039/d3cs00952a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Synthetic dynamic helical polymers (supramolecular and covalent) and foldamers share the helix as a structural motif. Although the materials are different, these systems also share many structural properties, such as helix induction or conformational communication mechanisms. The introduction of stimuli responsive building blocks or monomer repeating units in these materials triggers conformational or structural changes, due to the presence/absence of the external stimulus, which are transmitted to the helix resulting in different effects, such as assymetry amplification, helix inversion or even changes in the helical scaffold (elongation, J/H helical aggregates). In this review, we show through selected examples how different stimuli (e.g., temperature, solvents, cations, anions, redox, chiral additives, pH or light) can alter the helical structures of dynamic helical polymers (covalent and supramolecular) and foldamers acting on the conformational composition or molecular structure of their components, which is also transmitted to the macromolecular helical structure.
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Affiliation(s)
- María Lago-Silva
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Manuel Fernández-Míguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Rafael Rodríguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Emilio Quiñoá
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Félix Freire
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
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2
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Wang F, Wang W, Wang Y, Zheng W, Zheng T, Zhang L, Okamoto Y, Shen J. Synthesis of amylose and cellulose derivatives bearing bulky pendants for high-efficient chiral fluorescent sensing. Carbohydr Polym 2023; 311:120769. [PMID: 37028880 DOI: 10.1016/j.carbpol.2023.120769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 02/20/2023] [Accepted: 02/27/2023] [Indexed: 03/08/2023]
Abstract
Three novel amylose and cellulose phenylcarbamate derivatives bearing bulky para-substituted benzothienyl or benzofuranyl pendants were successfully synthesized as chiral fluorescent sensors through carbamoylation followed by Suzuki-Miyaura coupling reactions. The bulky derivatives showed good enantioselective fluorescent sensing properties toward a total of eight chiral quenchers in this study. Especially, a high enantiomeric fluorescence difference ratio (ef = 164.35) was achieved on amylose benzofuranylphenylcarbamates (Amy-2) to the 3-amino-3-phenylpropan-1-ol (Q5), an important chiral drug intermediate. It indicated that a favorable chiral environment was effectively constructed by arrangement of bulky π-conjugated benzothienyl or benzofuranyl pendants on the phenylcarbamate moieties surrounding the helical backbone, which is crucial for high-efficient chiral fluorescent sensing. As chiral stationary phases for high-performance liquid chromatography, the bulky benzothienylphenylcarbamates of amylose and cellulose also showed good resolution powers to thirteen racemates, including metal tris(acetylacetonate) complexes, chiral drugs, analytes with axial chirality and chiral aromatic amines, which were difficult to be efficiently separated even on the popular Chiralpak AD and Chiralcel OD. The excitation-dependent chiral fluorescent sensing probably followed different mechanisms from that for chromatographic enantioseparation relying on the dynamic collision of molecules in the ground state. The structure of the bulky derivatives was also investigated by CD spectra and POM microscopy.
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Affiliation(s)
- Fan Wang
- Polymer Materials Research Center, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Weiqi Wang
- Polymer Materials Research Center, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Yuqing Wang
- Polymer Materials Research Center, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Wei Zheng
- Polymer Materials Research Center, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Ting Zheng
- Polymer Materials Research Center, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
| | - Lili Zhang
- Polymer Materials Research Center, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
| | - Yoshio Okamoto
- Polymer Materials Research Center, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China; Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Jun Shen
- Polymer Materials Research Center, Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China; School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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3
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Cao S, Sun C, Wang J, Jiang Q, Qiu Y, Wang H, Liao Y, Xie X. Helix Induction and Inversion of Polymeric Foldamer Regulated by the Single Enantiomers. Macromol Rapid Commun 2022; 43:e2200238. [PMID: 35510985 DOI: 10.1002/marc.202200238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 04/28/2022] [Indexed: 11/12/2022]
Abstract
In general, a single enantiomer can induce a foldamer into a preferred-handed helix, while another condition is required for the helical inversion. In this work, it is found that the helix induction and subsequent inversion of the poly(m-phenylene diethynylene)-based foldamer bearing aza-18-crown-6 pendants (Poly-1) can be realized by increasing the concentration of sterically hindered L-amino acid perchlorate salts. When the amount of chiral enantiomers is small, one enantiomer tends to complex with two non-adjacent aza-18-crown-6 rings via three N+ -H···O hydrogen bonds in a sandwich mode. Notably, the transition dipole moment is perpendicular to aza-18-crown-6 ring, so that the induced helical chirality in Poly-1 main chain is opposite to the chirality of enantiomers. When the amount of chiral enantiomers is large enough, each aza-18-crown-6 is occupied by one enantiomer, which causes the transition dipole moment in a parallel direction to aza-18-crown-6 ring. In this case, the increased steric hindrance can facilitate the inversion of screw sense of Poly-1 main chain, which is directed by chiral center of enantiomers. As a result, a helix inversion has been achieved successfully. This work not only provides a novel strategy for regulating the two-stage folded helical conformations by the single enantiomers, but opens a window to develop chiral recognition materials. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Shuang Cao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Chenchen Sun
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Jing Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Qian Jiang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yuan Qiu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Hong Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yonggui Liao
- National Anti-counterfeit Engineering Research Center, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xiaolin Xie
- National Anti-counterfeit Engineering Research Center, Huazhong University of Science and Technology, Wuhan, 430074, China
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4
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Penaloza-Amion M, C Rêgo CR, Wenzel W. Local Electronic Charge Transfer in the Helical Induction of Cis-Transoid Poly(4-carboxyphenyl)acetylene by Chiral Amines. J Chem Inf Model 2022; 62:544-552. [PMID: 35080886 DOI: 10.1021/acs.jcim.1c01347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Understanding the phenomena that lead to the formation of a specific helicity in helical polymers remains a challenge even today. Various polymers have been shown to assume different helical screw-senses depending on different stimuli. Acid-base chiral amines, for example, can induce helical conformations on cis-transoid poly(4-carboxyphenyl)acetylene yielding high-intensity circular dichroism signals. There have been many experimental attempts to elucidate the driving forces involved, but the induction process remains unclear. Here, we investigate the mechanism of helical polymer formation by both Molecular Dynamics (MD) and Density Functional Theory (DFT) approaches. We find that DFT calculations and the dissociation energies between 4 monomer polymers and amines show a clear trend in the affinity of R and S conformers with clockwise and counterclockwise polymer screw-senses, respectively. The charge analysis revealed that the local charge transfer effect plays a crucial role that leads to the helical polymer-amine induction.
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Affiliation(s)
- Montserrat Penaloza-Amion
- Institute of Nanotechnology Hermann-von-Helmholtz-Platz, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
| | - Celso R C Rêgo
- Institute of Nanotechnology Hermann-von-Helmholtz-Platz, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
| | - Wolfgang Wenzel
- Institute of Nanotechnology Hermann-von-Helmholtz-Platz, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
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5
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Zhang Y, Deng J. Chiral helical polymer materials derived from achiral monomers and their chiral applications. Polym Chem 2020. [DOI: 10.1039/d0py00934b] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Helix-sense-selective polymerization (HSSP) of achiral monomers and chiral post-induction of racemic helical polymers provide two alternative approaches for constructing chiral helical polymer materials.
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Affiliation(s)
- Yingjie Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
- College of Materials Science and Engineering
| | - Jianping Deng
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
- College of Materials Science and Engineering
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6
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Wang S, Tan J, Guan X, Chen J, Zhang J, Wan X. Hydrogen bonds driven conformation autoregulation and sol-gel transition of poly(3,5-disubstituted phenylacetylene)s. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.05.060] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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7
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Ahmadabad FK, Pourayoubi M, Bakhshi H. Chiral phosphoric triamide‐based polymers for enantioseparation. J Appl Polym Sci 2019. [DOI: 10.1002/app.48034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Mehrdad Pourayoubi
- Department of Chemistry, Faculty of ScienceFerdowsi University of Mashhad Mashhad Iran
| | - Hadi Bakhshi
- Macromolecular Chemistry IIUniversity of Bayreuth Universitätsstraße 30, 95440 Bayreuth Germany
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8
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Wu D, Pan F, Fan GC, Zhu Z, Gao L, Tao Y, Kong Y. Efficient enantiorecognition of amino acids under a stimuli-responsive system: synthesis, characterization and application of electroactive rotaxane. Analyst 2019; 144:6415-6421. [DOI: 10.1039/c9an01692a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
An electroactive chiral rotaxane, consisting of a polymeric chiral ionic liquid as the flexible axle and 18-crown-6 as the wheel, is synthesized for efficient enantiorecognition of amino acids.
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Affiliation(s)
- Datong Wu
- Jiangsu Key Laboratory of Advanced Materials and Technology
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
| | - Fei Pan
- Jiangsu Key Laboratory of Advanced Materials and Technology
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
| | - Gao-Chao Fan
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science
- MOE
- Shandong Key Laboratory of Biochemical Analysis
- Qingdao University of Science and Technology
- Qingdao 266042
| | - Ziming Zhu
- College of Life Science and Technology
- China Pharmaceutical University
- Nanjing 211198
- China
| | - Li Gao
- Jiangsu Key Laboratory of Advanced Materials and Technology
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
| | - Yongxin Tao
- Jiangsu Key Laboratory of Advanced Materials and Technology
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
| | - Yong Kong
- Jiangsu Key Laboratory of Advanced Materials and Technology
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
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9
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Maeda K, Yashima E. Helical Polyacetylenes Induced via Noncovalent Chiral Interactions and Their Applications as Chiral Materials. Top Curr Chem (Cham) 2017; 375:72. [PMID: 28730394 PMCID: PMC5519648 DOI: 10.1007/s41061-017-0161-4] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 07/11/2017] [Indexed: 12/12/2022]
Abstract
Construction of predominantly one-handed helical polyacetylenes with a desired helix sense utilizing noncovalent chiral interactions with nonracemic chiral guest compounds based on a supramolecular approach is described. As with the conventional dynamic helical polymers possessing optically active pendant groups covalently bonded to the polymer chains, this noncovalent helicity induction system can show significant chiral amplification phenomena, in which the chiral information of the nonracemic guests can transfer with high cooperativity through noncovalent bonding interactions to induce an almost single-handed helical conformation in the polymer backbone. An intriguing "memory effect" of the induced macromolecular helicity is observed for some polyacetylenes, which means that the helical conformations induced in dynamic helical polyacetylene can be transformed into metastable static ones by tuning their helix-inversion barriers. Potential applications of helical polyacetylenes with controlled helix sense constructed by the "noncovalent helicity induction and/or memory effect" as chiral materials are also described.
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Affiliation(s)
- Katsuhiro Maeda
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan.
| | - Eiji Yashima
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, 464-8603, Japan.
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10
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Huang H, Li W, Shi Y, Deng J. Helix-sense-selective co-precipitation for preparing optically active helical polymer nanoparticles/graphene oxide hybrid nanocomposites. NANOSCALE 2017; 9:6877-6885. [PMID: 28498380 DOI: 10.1039/c7nr02337e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Constructing optically active helical polymer based nanomaterials without using expensive and limited chirally helical polymers has become an extremely attractive research topic in both chemical and materials science. In this study, we prepared a series of optically active helical polymer nanoparticles/graphene oxide (OAHPNs/GO) hybrid nanocomposites through an unprecedented strategy-the co-precipitation of optically inactive helical polymers and chirally modified GO. This approach is named helix-sense-selective co-precipitation (HSSCP), in which the chirally modified GO acted as a chiral source for inducing and further stabilizing the predominantly one-handed helicity in the optically inactive helical polymers. SEM and TEM images show quite similar morphologies of all the obtained OAHPNs/GO nanocomposites; specifically, the chirally modified GO sheets were uniformly decorated with spherical polymer nanoparticles. Circular dichroism (CD) and UV-vis absorption spectra confirmed the preferentially induced helicity in the helical polymers and the optical activity of the nanocomposites. The established HSSCP strategy is thus proven to be widely applicable and is expected to produce numerous functional OAHPNs/GO nanocomposites and even the analogues.
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Affiliation(s)
- Huajun Huang
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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11
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van Leeuwen T, Heideman GH, Zhao D, Wezenberg SJ, Feringa BL. In situ control of polymer helicity with a non-covalently bound photoresponsive molecular motor dopant. Chem Commun (Camb) 2017; 53:6393-6396. [DOI: 10.1039/c7cc03188b] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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12
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Cao J, Cao X, Qu JY, Zhang YY, Zhang B, Hong WF, Lai YL. Preparation of polymeric sulfur-contained chiral crown ethers and its application in recognition. Supramol Chem 2015. [DOI: 10.1080/10610278.2014.1003189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Jing Cao
- College of Chemistry, Xiangtan University, Xiangtan, Hunan411105, People's Republic of China
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan411105, People's Republic of China
| | - Xu Cao
- College of Chemistry, Xiangtan University, Xiangtan, Hunan411105, People's Republic of China
| | - Jin-Yuan Qu
- College of Chemistry, Xiangtan University, Xiangtan, Hunan411105, People's Republic of China
| | - Yuan-Yuan Zhang
- College of Chemistry, Xiangtan University, Xiangtan, Hunan411105, People's Republic of China
| | - Bing Zhang
- College of Chemistry, Xiangtan University, Xiangtan, Hunan411105, People's Republic of China
| | - Wei-Feng Hong
- College of Chemistry, Xiangtan University, Xiangtan, Hunan411105, People's Republic of China
| | - Ying-Ling Lai
- College of Chemistry, Xiangtan University, Xiangtan, Hunan411105, People's Republic of China
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13
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Sairenji S, Akine S, Nabeshima T. Dynamic Helicity Control of a Single-helical Oligooxime Complex and Acid–Base-triggered Repeated Helicity Inversion Mediated by Amino Acids. CHEM LETT 2014. [DOI: 10.1246/cl.140263] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Shiho Sairenji
- Faculty of Pure and Applied Sciences, University of Tsukuba
| | - Shigehisa Akine
- Graduate School of Natural Science and Technology, Kanazawa University
| | - Tatsuya Nabeshima
- Faculty of Pure and Applied Sciences, University of Tsukuba
- Tsukuba Research Center for Interdisciplinary Materials Science, University of Tsukuba
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14
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Banno M, Wu ZQ, Makiguchi W, Furusho Y, Yashima E. Supramolecular Organogels Formed through Complementary Double-Helix Formation. Chempluschem 2013; 79:35-44. [DOI: 10.1002/cplu.201300108] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 09/09/2013] [Indexed: 02/06/2023]
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15
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Liu D, Wang D, Wang M, Zheng Y, Koynov K, Auernhammer GK, Butt HJ, Ikeda T. Supramolecular Organogel Based on Crown Ether and Secondary Ammoniumion Functionalized Glycidyl Triazole Polymers. Macromolecules 2013. [DOI: 10.1021/ma400407a] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Dian Liu
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz,
Germany
| | - Dapeng Wang
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz,
Germany
| | - Miao Wang
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz,
Germany
| | - Yijun Zheng
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz,
Germany
| | - Kaloian Koynov
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz,
Germany
| | | | - Hans-Jürgen Butt
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz,
Germany
| | - Taichi Ikeda
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz,
Germany
- Polymer Materials
Unit, National Institute for Materials Science, Namiki 1-1, 305-0044 Tsukuba, Japan
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16
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Yan X, Xu D, Chi X, Chen J, Dong S, Ding X, Yu Y, Huang F. A multiresponsive, shape-persistent, and elastic supramolecular polymer network gel constructed by orthogonal self-assembly. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:362-9. [PMID: 22161963 DOI: 10.1002/adma.201103220] [Citation(s) in RCA: 570] [Impact Index Per Article: 47.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Revised: 09/20/2011] [Indexed: 05/21/2023]
Abstract
A cross-linked supramolecular polymer network gel is designed and prepared, which shows reversible gel-sol transitions induced by changes in pH, temperature, cation concentration, and metal co-ordination. The gel pore size is controlled by the amount of cross-linker added to the system, and the material can be molded into shape-persistent, free-standing objects with elastic behavior. These features are all due to the dynamically reversible host-guest complexation and good mechanical properties of the cross-linked polymer network. No single organogel has previously been reported to possess all of these features, making this supramolecular gel an unprecedentedly intelligent soft material.
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Affiliation(s)
- Xuzhou Yan
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, P.R. China
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17
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Abe H, Inouye M, Takashima S, Yamamoto T. Palladium-Catalyzed Selective and Sequential Functionalization of 2,4,6-Trihalopyridine Rings: Synthesis of Ethynylpyridine Polymers Directly Joined with Aza-Crown Ethers. HETEROCYCLES 2012. [DOI: 10.3987/com-11-s(p)62] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Maeda K, Mochizuki H, Osato K, Yashima E. Stimuli-Responsive Helical Poly(phenylacetylene)s Bearing Cyclodextrin Pendants that Exhibit Enantioselective Gelation in Response to Chirality of a Chiral Amine and Hierarchical Super-Structured Helix Formation. Macromolecules 2011. [DOI: 10.1021/ma200537p] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Katsuhiro Maeda
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Hiroaki Mochizuki
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Keiko Osato
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Eiji Yashima
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
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19
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20
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Su YS, Liu JW, Jiang Y, Chen CF. Assembly of a Self-Complementary Monomer: Formation of Supramolecular Polymer Networks and Responsive Gels. Chemistry 2011; 17:2435-41. [DOI: 10.1002/chem.201002862] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Indexed: 11/09/2022]
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21
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Yamaguchi I, Mitsuno H. Synthesis of n-Type π-Conjugated Polymers with Pendant Crown Ether and Their Stability of n-Doping State against Air. Macromolecules 2010. [DOI: 10.1021/ma101731v] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Isao Yamaguchi
- Department of Material Science, Faculty of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
| | - Hidehito Mitsuno
- Department of Material Science, Faculty of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
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Lu J, Wu L, Jiang J, Zhang X. Helical Nanostructures of an Optically Active Metal-Free Porphyrin with Four Optically Active Binaphthyl Moieties: Effect of Metal-Ligand Coordination on the Morphology. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000358] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Asymmetric anionic polymerization of maleimide bearing an N-4′-benzo 15-crown-5 ether with an organometal/chiral ligand complex. Polym J 2010. [DOI: 10.1038/pj.2010.54] [Citation(s) in RCA: 8] [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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24
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Fukuhara G, Inoue Y. Chirality-Sensing Binaphthocrown Ether-Polythiophene Conjugate. Chemistry 2010; 16:7859-64. [DOI: 10.1002/chem.200903545] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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25
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26
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Yashima E, Maeda K, Iida H, Furusho Y, Nagai K. Helical Polymers: Synthesis, Structures, and Functions. Chem Rev 2009; 109:6102-211. [PMID: 19905011 DOI: 10.1021/cr900162q] [Citation(s) in RCA: 1271] [Impact Index Per Article: 84.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Eiji Yashima
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan, and Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Katsuhiro Maeda
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan, and Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Hiroki Iida
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan, and Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Yoshio Furusho
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan, and Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Kanji Nagai
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan, and Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
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27
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Ge Z, Hu J, Huang F, Liu S. Responsive Supramolecular Gels Constructed by Crown Ether Based Molecular Recognition. Angew Chem Int Ed Engl 2009; 48:1798-802. [DOI: 10.1002/anie.200805712] [Citation(s) in RCA: 226] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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28
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Ge Z, Hu J, Huang F, Liu S. Responsive Supramolecular Gels Constructed by Crown Ether Based Molecular Recognition. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200805712] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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29
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Abe H, Takashima S, Yamamoto T, Inouye M. Azacrown-attached meta-ethynylpyridine polymer: saccharide recognition regulated by supramolecular device. Chem Commun (Camb) 2009:2121-3. [DOI: 10.1039/b902269d] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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30
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Costa SP, Batista RM, Raposo MMM. Synthesis and photophysical characterization of new fluorescent bis-amino acids bearing a heterocyclic bridge containing benzoxazole and thiophene. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.07.096] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Takata T, Ishiwari F, Sato T, Seto R, Koyama Y. Synthesis, Structure, and Properties of Polyacetylenes Possessing Chiral Spirobifluorene Moieties in the Side Chain. Polym J 2008. [DOI: 10.1295/polymj.pj2008104] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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32
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Takechi H, Adachi K, Monjushiro H, Watarai H. Linear dichroism of Zn(II)-tetrapyridylporphine aggregates formed at the toluene/water interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:4722-4728. [PMID: 18376889 DOI: 10.1021/la7027862] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The apparent circular dichroism (CD) and the linear dichroism (LD) spectra of the aggregates of achiral zinc(II)-5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine (ZnTPyP), formed at the toluene/water interface in a centrifugal liquid membrane (CLM) cell, were investigated by comparison with the microscopic CD and LD spectra of a single interfacial aggregate of ZnTPyP about 100 mum in length, measured by a microscope-spectropolarimeter. The interfacial ZnTPyP aggregate showed two types of flat trapezoidal shapes, one had a seedlike core at an edge (type I) and another a needlelike core at an edge (type II). The microscopic CD and LD spectra were observed by varying the angle between the parallel axis of the trapezoidal aggregate and the perpendicular axis of a polarized light for LD. The plot of the CD intensity against the LD intensity for a single aggregate, observed at a given wavelength, showed a rotated elliptical shape with a long axis through the origin, when the orientation angle was changed. From these results, it was concluded that the apparent CD spectra observed by the CLM-CD method were mainly due to the large linear dichroism of the aggregate. Both type I and type II structures showed two transition dipole moments, parallel and perpendicular to the long axis of the structure, but suggesting a more developed J-aggregate in type II structure. AFM measurements showed that the interfacial ZnTPyP aggregate had a multilayer structure, in which the unit monolayer thickness was 1.58 +/- 0.23 nm. Finally, the orientation angle of the interfacial aggregate in the CLM cell was estimated as 41 degrees -44 degrees to the rotating axis of the cell.
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Affiliation(s)
- Hideaki Takechi
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
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33
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Xu H, Jin JK, Mao Y, Sun JZ, Yang F, Zhang Yuan W, Dong YQ, Wang M, Tang BZ. Synthesis of Sulfur-Containing Polyacetylenes and Fabrication of Their Hybrids with ZnO Nanoparticles. Macromolecules 2008. [DOI: 10.1021/ma702337z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haipeng Xu
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China, and Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jia Ke Jin
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China, and Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Yu Mao
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China, and Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jing Zhi Sun
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China, and Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Feng Yang
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China, and Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Wang Zhang Yuan
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China, and Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Yong Qiang Dong
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China, and Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Mang Wang
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China, and Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ben Zhong Tang
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China, and Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
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34
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Suzuki Y, Tabei J, Shiotsuki M, Inai Y, Sanda F, Masuda T. Synthesis and Helical Structure of Poly(N-butynylamide)s Having Various Side Chains, Where the Helix Is Highly Affected by the Methyl Branch and the Lactone Moiety. Macromolecules 2008. [DOI: 10.1021/ma702316f] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuji Suzuki
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Kyoto 615-8510, Japan, and Department of Environmental Technology and Urban Planning, Shikumi College, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Junichi Tabei
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Kyoto 615-8510, Japan, and Department of Environmental Technology and Urban Planning, Shikumi College, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Masashi Shiotsuki
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Kyoto 615-8510, Japan, and Department of Environmental Technology and Urban Planning, Shikumi College, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Yoshihito Inai
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Kyoto 615-8510, Japan, and Department of Environmental Technology and Urban Planning, Shikumi College, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Fumio Sanda
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Kyoto 615-8510, Japan, and Department of Environmental Technology and Urban Planning, Shikumi College, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Toshio Masuda
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Kyoto 615-8510, Japan, and Department of Environmental Technology and Urban Planning, Shikumi College, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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35
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Nagai K, Maeda K, Takeyama Y, Sato T, Yashima E. Temperature-induced chiroptical changes in a helical poly(phenylacetylene) bearing N,N-diisopropylaminomethyl groups with chiral acids in water. Chem Asian J 2007; 2:1314-21. [PMID: 17763496 DOI: 10.1002/asia.200700185] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A stereoregular poly(phenylacetylene) bearing an N,N-diisopropylaminomethyl group as the pendant (poly-1) changed its structure into the prevailing one-handed helical conformation upon complexation with optically active acids in water. The complexes exhibited induced circular dichroism (ICD) in the UV/Vis region of the polymer backbone. Poly-1 is highly sensitive to the chirality of chiral acids and can detect a small enantiomeric imbalance in these acids, in particular, phenyl lactic acid in water. For example, a 0.005% enantiomeric excess of phenyl lactic acid can be detected by CD spectroscopy. The observed ICD intensity and pattern of poly-1 were dependent on the temperature and concentration of poly-1, probably due to aggregations of the polymer at high temperature as revealed by dynamic light scattering and AFM. On the basis of the temperature-dependent ICD changes, the preferred chiral helical sense of poly-1 was found to be controlled by noncovalent bonding interactions by using structurally different enantiomeric acids.
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Affiliation(s)
- Kanji Nagai
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
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36
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Morino K, Kaptein B, Yashima E. Detection of the chirality of C alpha-methylated alpha-amino acids with a dynamic helical poly(phenylacetylene) bearing aza-18-crown-6 ether pendants. Chirality 2007; 18:717-22. [PMID: 16856161 DOI: 10.1002/chir.20303] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A stereoregular poly(phenylacetylene) bearing the aza-18-crown-6 ether pendants (poly-1) was found to form a predominantly one-handed helix upon complexation with optically active C(alpha)-methylated alpha-amino acids and their amide derivatives including typical meteoritic C(alpha)-methylated alpha-amino acids such as C(alpha)-methyl norvaline and C(alpha)-methyl valine. The complexes exhibited an induced circular dichroism (ICD) in the UV-visible region of the polymer backbone. Therefore, poly-1 can be used as a novel probe for detection of the chirality of C(alpha)-methylated alpha-amino acids. The effect of the enantiomeric excess (ee) of C(alpha)-methylated alpha-amino acids on the helicity induction in poly-1 was also investigated.
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Affiliation(s)
- Kazuhide Morino
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, Japan
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37
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Mizobe Y, Hinoue T, Miyata M, Hisaki I, Hasegawa Y, Tohnai N. Distinct Guest-Dependent Changes in Arrangements of a Fluorophore and the Corresponding Emission Modes in a Ternary System: Transcription and Translation of Guest Molecular Information. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2007. [DOI: 10.1246/bcsj.80.1162] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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38
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Zhang W, Shiotsuki M, Masuda T. A Helical Poly(macromonomer) Consisting of a Polyacetylene Main Chain and Polystyrene Side Chains. Macromol Rapid Commun 2007. [DOI: 10.1002/marc.200700051] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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39
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Shiotsuki M, Zhang W, Masuda T. Synthesis and Properties of Helical Poly(macromonomer) Consisting of Polyacetylene Main Chain and Poly(methyl methacrylate) Side Chains. Polym J 2007. [DOI: 10.1295/polymj.pj2006260] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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Suzuki Y, Shiotsuki M, Sanda F, Masuda T. Chiral 1-Methylpropargyl Alcohol: A Simple and Powerful Helical Source for Substituted Polyacetylenes. Macromolecules 2007. [DOI: 10.1021/ma0629642] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuji Suzuki
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Kyoto 615-8510, Japan
| | - Masashi Shiotsuki
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Kyoto 615-8510, Japan
| | - Fumio Sanda
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Kyoto 615-8510, Japan
| | - Toshio Masuda
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Kyoto 615-8510, Japan
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41
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Sakai R, Otsuka I, Satoh T, Kakuchi R, Kaga H, Kakuchi T. Thermoresponsive On−Off Switching of Chiroptical Property Induced in Poly(4‘-ethynylbenzo-15-crown-5)/α-Amino Acid System. Macromolecules 2006. [DOI: 10.1021/ma060376i] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ryosuke Sakai
- Division of Biotechnology and Macromolecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan and National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan
| | - Issei Otsuka
- Division of Biotechnology and Macromolecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan and National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan
| | - Toshifumi Satoh
- Division of Biotechnology and Macromolecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan and National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan
| | - Ryohei Kakuchi
- Division of Biotechnology and Macromolecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan and National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan
| | - Harumi Kaga
- Division of Biotechnology and Macromolecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan and National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan
| | - Toyoji Kakuchi
- Division of Biotechnology and Macromolecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan and National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan
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42
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Maeda K, Yashima E. Dynamic Helical Structures: Detection and Amplification of Chirality. Top Curr Chem (Cham) 2006. [DOI: 10.1007/128_035] [Citation(s) in RCA: 209] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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43
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Adachi K, Chayama K, Watarai H. Formation of helical J-aggregate of chiral thioether-derivatized phthalocyanine bound by palladium(II) at the toluene/water interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:1630-9. [PMID: 16460084 DOI: 10.1021/la0526131] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A chiral thioether-substituted phthalocyanine ((2,3,9,10,16,17,23,24-octakis-1-phenylethylthiophthalocyaninato)magnesium(II) [MgPc(SEtPh)8]) has been synthesized, which can be bound by soft-metal ions such as palladium(II) ion. Aggregates formed from MgPc(SEtPh)8 and Pd(II) in toluene and at the toluene/water interface were characterized by means of UV-vis absorption and circular dichroism (CD) spectrometries using centrifugal liquid-membrane (CLM) cell. Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF/MS) and scanning electron microscope (SEM) were used as complementary techniques. The toluene solution of MgPc(SEtPh)8 had no optical chirality. However, the addition of PdCl2 into the toluene solution of MgPc(SEtPh)8 induced optical chirality, which indicated the formation of a twisted H-type dimer (face-to-face fashion) of MgPc(SEtPh)8 bound by four PdCl2 in the bulk toluene solution. On the other hand, in the toluene/water interface, helical J-aggregate (head-to-tail fashion) of MgPc(SEtPh)8 bound by PdCl2 was formed, in which one J-aggregate unit contained five 1:2 complexes of MgPc(SEtPh)8-Pd(II) on average. On the basis of the experimental results and the exciton theory for optical chirality, a possible mechanism for the chiral aggregation of MgPc(SEtPh)8-Pd(II) complexes at the interface was proposed. In the present study, we demonstrated a novel strategy for the design of helical phthalocyanine aggregates using the liquid/liquid interface as a template.
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Affiliation(s)
- Kenta Adachi
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
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44
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Adachi K, Chayama K, Watarai H. Control of optically active structure of thioether-phthalocyanine aggregates by chiral Pd(II)-BINAP complexes in toluene and at the toluene/water interface. Chirality 2006; 18:599-608. [PMID: 16715515 DOI: 10.1002/chir.20293] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The Pd(II)-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl (BINAP)-mediated chiral assembly of thioether-derivatised phthalocyanatomagnesium(II) compounds (MgPc(SR)8, SR is benzylthio (SBz) or benzhydrylthio (Bh)) was formed in toluene and at the toluene/water interface, and investigated by means of UV-Vis absorption and circular dichroism (CD) spectroscopy combined with the centrifugal liquid-membrane (CLM) devise. Interfacial tension measurements indicated that, in the presence of PdSO4 in the aqueous phase, BINAP ligand adsorbed as a monolayer forming Pd(II)BINAP2+ complex at the toluene/water interface. UV-Vis absorption spectrum of MgPc(SR)8 in the Q-band region was blue-shifted in toluene upon addition of [Pd(II)BINAP]Cl2, but red-shifted at the toluene/water interface when Pd(II)BINAP2+ was formed at the interface. These results suggested that MgPc(SR)8-Pd(II)BINAP complex formed H-aggregate (face-to-face type) in toluene solution and J-aggregate (end-to-end type) at the toluene/water interface, respectively. Moreover, the specific bisignate CD spectral pattern in both systems indicated that the aggregates of MgPc(SR)8-Pd(II)BINAP complexes were chirally twisted, well controlled by the chirality of BINAP ligand. Very interestingly, the morphology of MgPc(SBz)8-Pd(II)BINAP and MgPc(SBh)8-Pd(II)BINAP aggregates formed at the toluene/water interface were significantly different as the rodlike and the ribbonlike crystalline structure, respectively, as observed by a scanning electron microscopy (SEM). On the basis of these experimental results, we proposed schematic molecular models of the chiral aggregates of MgPc(SR)8-Pd(II)BINAP complexes and demonstrated the specific role of the toluene/water interface.
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Affiliation(s)
- Kenta Adachi
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka, Japan
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45
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Kakuchi R, Sakai R, Otsuka I, Satoh T, Kaga H, Kakuchi T. Synthesis and Helicity Induction of Poly(phenylacetylene) Derivatives Bearing a Crown Cavity on the Main Chain. Macromolecules 2005. [DOI: 10.1021/ma051824+] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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46
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Percec V, Rudick JG. Independent Electrocyclization and Oxidative Chain Cleavage along the Backbone of cis-Poly(phenylacetylene). Macromolecules 2005. [DOI: 10.1021/ma051060y] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Virgil Percec
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396
| | - Jonathan G. Rudick
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396
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