1
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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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Dhamija A, Chandel D, Rath SP. Modulation of supramolecular chirality by stepwise axial coordination in a nano-size trizinc(ii)porphyrin trimer. Chem Sci 2023; 14:6032-6038. [PMID: 37293642 PMCID: PMC10246700 DOI: 10.1039/d3sc00858d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/09/2023] [Indexed: 06/10/2023] Open
Abstract
Herein, we report a chiral guest's triggered spring-like contraction and extension motions coupled with unidirectional twisting in a novel flexible and 'nano-size' achiral trizinc(ii)porphyrin trimer host upon step-wise formation of 1 : 1, 1 : 2, and 1 : 4 host-guest supramolecular complexes based on the stoichiometry of the diamine guests for the first time. During these processes, porphyrin CD responses have been induced, inverted, and amplified, and reduced, respectively, in a single molecular framework due to the change in the interporphyrin interactions and helicity. Also, the sign of the CD couplets is just the opposite between R and S substrates which suggests that the chirality is dictated solely by the stereographic projection of the chiral center. Interestingly, the long-range electronic communications between the three porphyrin rings generate trisignate CD signals that provide further information about molecular structures.
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Affiliation(s)
- Avinash Dhamija
- Department of Chemistry, Indian Institute of Technology Kanpur Kanpur-208016 India
| | - Dolly Chandel
- Department of Chemistry, Indian Institute of Technology Kanpur Kanpur-208016 India
| | - Sankar Prasad Rath
- Department of Chemistry, Indian Institute of Technology Kanpur Kanpur-208016 India
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3
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One-handed helical twisting in optically inactive poly(phenylacetylene) bearing two hydroxyl groups upon the departure of a single enantiomer. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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4
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Li Z, Song W, Zhu Y, Yan L, Zhong X, Zhang M, Li H. The Full Cytosine-Cytosine Base Paring: Self-Assembly and Crystal Structure. Chemistry 2023; 29:e202203979. [PMID: 36757279 DOI: 10.1002/chem.202203979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/06/2023] [Accepted: 02/07/2023] [Indexed: 02/10/2023]
Abstract
The synthesis of self-assembly systems that can mimic partial biological behaviours require ingenious and delicate design. For decades, scientists are committed to exploring new base pairing patterns using hydrogen bonds directed self-assembly of nucleotides. A fundamental question is the adaptive circumstance of the recognition between base pairs, namely, how solvent conditions affect the domain of base pairs. Towards this question, three nucleotide complexes based on 2'-deoxycytidine-5'-monophosphate (dCMP) and cytidine-5'-monophosphate (CMP) were synthesized in different solvents and pH values, and an unusual cytosine-cytosine base paring pattern (named full C : C base pairing) has been successfully obtained. Systematic single crystal analysis and 1 H NMR titration spectra have been performed to explore factors influencing the formation of base paring patterns. Moreover, supramolecular chirality of three complexes were studied using circular dichroism (CD) spectroscopy in solution and solid-state combined with crystal structure analysis.
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Affiliation(s)
- Zhongkui Li
- Key Laboratory of Medicinal Molecule Science and Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Wenjing Song
- Key Laboratory of Medicinal Molecule Science and Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Yanhong Zhu
- Key Laboratory of Medicinal Molecule Science and Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Li Yan
- Key Laboratory of Medicinal Molecule Science and Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Xue Zhong
- Key Laboratory of Medicinal Molecule Science and Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Menglei Zhang
- Key Laboratory of Medicinal Molecule Science and Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Hui Li
- Key Laboratory of Medicinal Molecule Science and Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
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5
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Cai S, Huang Y, Xie S, Wang S, Guan Y, Wan X, Zhang J. 2D Hexagonal Assemblies of Amphiphilic Double-Helical Poly(phenylacetylene) Homopolymers with Enhanced Circularly Polarized Luminescence and Chiral Self-Sorting. Angew Chem Int Ed Engl 2022; 61:e202214293. [PMID: 36305302 DOI: 10.1002/anie.202214293] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Indexed: 11/07/2022]
Abstract
Two-dimensional (2D) chiral materials have been attracting immense attentions owing to their unique properties. Herein, we successfully developed a unique assembly strategy of amphiphilic homopolymers to construct stable free-standing 2D chiral nanosheets in solution. The amphiphilic poly(phenylacetylene) (PPA) homopolymers bearing the hydrophobic and hydrophilic dendritic side chains adopt a DNA-like double-helical conformation. The regular hexagonal nanosheets were formed in THF/EtOH through nucleation and epitaxial growth. The sizes of the nanosheets can be modulated from nanometers to submillimeters upon varying the ratio of binary solvents, while the thickness is linearly correlated with the molecular weights. The 2D architecture can significantly enhance the CPL of polymers with a high dissymmetry factor ≈0.1. Driven by a discrimination of helical conformation, the PPAs can self-sort into homochiral 2D nanosheets, as directly visualized by using fluorescent microscopy.
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Affiliation(s)
- Siliang Cai
- Beijing National Laboratory for Molecular Science, Key Labora tory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Yihan Huang
- Beijing National Laboratory for Molecular Science, Key Labora tory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Siyu Xie
- Beijing National Laboratory for Molecular Science, Key Labora tory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Sheng Wang
- Beijing National Laboratory for Molecular Science, Key Labora tory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Yan Guan
- Beijing National Laboratory for Molecular Science, Key Labora tory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Xinhua Wan
- Beijing National Laboratory for Molecular Science, Key Labora tory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Jie Zhang
- Beijing National Laboratory for Molecular Science, Key Labora tory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
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6
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Tarrío JJ, Rodríguez R, Fernández B, Quiñoá E, Freire F. Dissymmetric Chiral Poly(diphenylacetylene)s: Secondary Structure Elucidation and Dynamic Luminescence. Angew Chem Int Ed Engl 2022; 61:e202115070. [DOI: 10.1002/anie.202115070] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Indexed: 12/17/2022]
Affiliation(s)
- Juan José Tarrío
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Rafael Rodríguez
- WPI Nano Life Science Institute (WPI-NanoLSI) Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
| | - Berta Fernández
- Departamento de Química Física Universidade de Santiago de Compostela 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 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 15782 Santiago de Compostela Spain
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7
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Duan M, Wu G, Gu T, Jiang X, Zhao L, Zhou L, Liao Y, Pu Q. Conductive and anticorrosive poly(
N
‐alkyl‐2‐(4‐hydroxybut‐2‐ynyl) pyridinium bromides): Synthesis and characterization. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20210672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ming Duan
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu Sichuan China
| | - Gang Wu
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu Sichuan China
| | - Tianbin Gu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province China West Normal University Nanchong Sichuan China
| | - Xiaohui Jiang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province China West Normal University Nanchong Sichuan China
| | - Lei Zhao
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu Sichuan China
| | - Limei Zhou
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province China West Normal University Nanchong Sichuan China
| | - Yunwen Liao
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province China West Normal University Nanchong Sichuan China
| | - Qiang Pu
- China Petroleum Engineering Co., Ltd Southwest Company Chengdu Sichuan China
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8
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Freire F, Tarrío JJ, Rodríguez R, Fernández B, Quiñoá E. Dissymmetric Chiral Poly(diphenylacetylene)s: Secondary Structure Elucidation and Dynamic Luminescence. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Felix Freire
- Universidade de Santiago de Compostela Centre for Research in Biological Chemistry and Molecular Materials Jenaro de la Fuente street s/n 15782 Santiago de Compostela SPAIN
| | - Juan José Tarrío
- Universidade de Santiago de Compostela - Campus de Santiago: Universidade de Santiago de Compostela CiQUS SPAIN
| | - Rafael Rodríguez
- Kanazawa University - Kakuma Campus: Kanazawa Daigaku Organic Chemsitry JAPAN
| | - Berta Fernández
- Universidade de Santiago de Compostela - Campus de Santiago: Universidade de Santiago de Compostela Physical Chemistry RWANDA
| | - Emilio Quiñoá
- Universidade de Santiago de Compostela - Campus de Santiago: Universidade de Santiago de Compostela CiQUS SPAIN
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9
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Chai Y, Liu X, Tian Y, Wang X, Quan Z. Metal‐Free Electrocatalytic C(sp
2
)‐H Acyloxylation of Aromatic Ring to Synthesis of Acetoxylated Phenylethers. ChemistrySelect 2021. [DOI: 10.1002/slct.202103870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yao Chai
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 People's Republic of China
| | - Xiao‐Jun Liu
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 People's Republic of China
| | - Ya‐Ling Tian
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 People's Republic of China
| | - Xi‐Cun Wang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 People's Republic of China
| | - Zheng‐Jun Quan
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 People's Republic of China
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10
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Mawatari Y, Oouchi M, Yoshida Y, Hiraoki T, Tabata M. Rate Control of Helix Oscillation of Poly(arylacetylene)s Achieved by Design of Side-Group Structures. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Muneki Oouchi
- NMR Facility, Center for Life Science Technologies, RIKEN, 1-7-22 Suehiro, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | | | - Toshifumi Hiraoki
- Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Masayoshi Tabata
- Faculty of Science and Technology, Department of Applied Chemistry and Bioscience, Chitose Institute of Science and Technology, 65-758 Bibi, Chitose, Hokkaido 066-8655, Japan
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11
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Zhang YF, Chen X, Yu XS, Chen JX, Hu MQ, Zheng BY, Liu YX, Yang S, Chen EQ. Folded Chain Lamellae of Dynamic Helical Poly(phenylacetylene) in the Hexagonal Columnar Phase. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00818] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yan-Fang Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry, Peking University, Beijing 100871, China
| | - Xu Chen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry, Peking University, Beijing 100871, China
| | - Xiao-Song Yu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry, Peking University, Beijing 100871, China
| | - Jia-Xin Chen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry, Peking University, Beijing 100871, China
| | - Ming-Qiu Hu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry, Peking University, Beijing 100871, China
| | - Bo-Yuan Zheng
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry, Peking University, Beijing 100871, China
| | - Yi-Xin Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Shuang Yang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry, Peking University, Beijing 100871, China
| | - Er-Qiang Chen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry, Peking University, Beijing 100871, China
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12
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Ishido Y, Kanbayashi N, Okamura TA, Onitsuka K. Conformational Switch of Arylopeptide: Helix-Helix Transition Based on Side Chain Solvation. Macromol Rapid Commun 2021; 42:e2100250. [PMID: 34121257 DOI: 10.1002/marc.202100250] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/12/2021] [Indexed: 11/11/2022]
Abstract
Controlling the structural transition between well-defined architectures found in living system is essential in polymer chemistry as well as material science. Herein, the reversible conformational switch of a non-natural polypeptide with an aromatic ring (2,6-naphthalene spacer) on its peptide backbone, referred to as an arylopeptide, between two distinct well-defined helical structures (extended 31 -helix and contracted 41 -helix) using side chain solvation is demonstrated. The folding selectivity of the arylopeptide and found that the affinity between the solvent and side chains is an essential factor for determining the global structure is investigated. A thermoresponsive arylopeptide bearing oligoether groups (─(CH2 CH2 O)9 CH3 )) on the side chain is designed, which exhibited unique lower critical solution temperature behavior and converted from the 31 to the 41 -helix depending on the temperature. Furthermore, the solvent affinity of the entire polymer by combining substituents (─(CH2 CH2 O)3 CH3 and ─C12 H25 ) with different properties on the side chains to achieve a spring-like expansion-contraction system that allows interconversion between 31 - and 41 -helices is adjusted.
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Affiliation(s)
- Yuki Ishido
- Department of Macromolecular Science Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
| | - Naoya Kanbayashi
- Department of Macromolecular Science Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
| | - Taka-Aki Okamura
- Department of Macromolecular Science Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
| | - Kiyotaka Onitsuka
- Department of Macromolecular Science Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
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13
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Guan X, Wang S, Shi G, Zhang J, Wan X. Thermoswitching of Helical Inversion of Dynamic Polyphenylacetylenes through cis-trans Isomerization of Amide Pendants. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00538] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xiaoyan Guan
- 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
| | - Sheng Wang
- 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
| | - Ge Shi
- 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
| | - Jie 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
| | - Xinhua Wan
- 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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14
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Rey‐Tarrío F, Rodríguez R, Quiñoá E, Riguera R, Freire F. Photochemical Electrocyclization of Poly(phenylacetylene)s: Unwinding Helices to Elucidate their 3D Structure in Solution. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014780] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Francisco Rey‐Tarrío
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 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 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 15782 Santiago de Compostela Spain
| | - Ricardo Riguera
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica Universidade de Santiago de Compostela 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 15782 Santiago de Compostela Spain
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15
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Rey-Tarrío F, Rodríguez R, Quiñoá E, Riguera R, Freire F. Photochemical Electrocyclization of Poly(phenylacetylene)s: Unwinding Helices to Elucidate their 3D Structure in Solution. Angew Chem Int Ed Engl 2021; 60:8095-8103. [PMID: 33332770 DOI: 10.1002/anie.202014780] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/03/2020] [Indexed: 12/16/2022]
Abstract
Photochemical electrocyclization of poly(phenylacetylene)s (PPAs) is used for the structural elucidation of a polyene backbone. This method not only allows classification of PPAs in cis-cisoidal (ω1 <90°) or cis-transoidal structures (ω1 >90°), but also approximating ω1 . A PPA solution is illuminated with visible light and monitoring the photochemical electrocyclization of the PPA helix by measuring the ECD spectra at different times. PPAs with a cis-cisoidal structure show a reduction of the ECD signal of at least 50 % before 30 min of irradiation, while cis-transoidal helices need much longer time because the transoidal bond must be isomerized. The different cis-cisoidal and cis-transoidal helices require different times to decrease their ECD signal by 50 % (t1/2 ), depending on the degree of compression or stretching of the helix, establishing a relationship between the secondary structure adopted by PPA (ω1 ) and the time required to lose the ECD vinylic signal by light irradiation.
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Affiliation(s)
- Francisco Rey-Tarrío
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 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, 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, 15782, Santiago de Compostela, Spain
| | - Ricardo Riguera
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 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, 15782, Santiago de Compostela, Spain
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16
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Ousaka N, Yashima E. Stimuli-responsive Molecular Springs Based on Single- and Multi-stranded Helical Structures. CHEM LETT 2021. [DOI: 10.1246/cl.200737] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Naoki Ousaka
- Molecular Engineering Institute, Kyushu Institute of Technology, Tobata-ku, Kitakyushu, Fukuoka 804-8550, Japan
| | - Eiji Yashima
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
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17
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Lama P, Hazra A, Barbour LJ. Accordion and layer-sliding motion to produce anomalous thermal expansion behaviour in 2D-coordination polymers. Chem Commun (Camb) 2019; 55:12048-12051. [PMID: 31535685 DOI: 10.1039/c9cc06634a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solvent-free (1) and solvated (2) 2D-coordination polymers have been synthesised by varying the amount of solvent during crystallisation. 1 undergoes a unique accordion motion of 2D zig-zag interwoven layers whereas 2 experiences layer-sliding within 2D layers to produce anomalous thermal expansion behaviour.
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Affiliation(s)
- Prem Lama
- School of Chemical Sciences, Goa University, Taleigao Plateau, Taleigao 403206, Goa, India.
| | - Arpan Hazra
- Department of Chemistry and Polymer Science, University of Stellenbosch, Matieland 7602, Stellenbosch, South Africa.
| | - Leonard J Barbour
- Department of Chemistry and Polymer Science, University of Stellenbosch, Matieland 7602, Stellenbosch, South Africa.
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18
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Ishido Y, Kanbayashi N, Okamura TA, Onitsuka K. Side-Chain-Driven Dual Structural System of Poly-Arylopeptide: Selective Helical Formation Derived from Aromatic Ring Flips on the Backbone. ACS Macro Lett 2019; 8:694-699. [PMID: 35619526 DOI: 10.1021/acsmacrolett.9b00249] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A methodology for producing dual structural systems of macromolecules, which involves flipping the unsymmetrical aromatic rings on the main chain is presented. Previously, we reported a non-natural polypeptide containing an aromatic ring on the peptide backbone, called a poly "arylopeptide". Herein, we used 2,6-naphthalene rings as axially unsymmetrical spacers, which has two geometrical isomers, anti and syn, to create dual structural properties. The miniscule energy difference between the two geometrical isomers can be amplified by incorporating the 2,6-naphthylene units into the polypeptide backbone, which creates a thermodynamic driving force for the formation of two specific global structures (i.e., 31-helix or 41-helix) biased toward one side geometrical isomer depending on the side chain. Additionally, the 31-helix can be switched to the 41-helix upon addition of a small amount of additives, indicating a conformational conversion from an identical sequence. The developmental dual helical systems exploit basic molecular geometry and can serve as a design platform for synthetic polymers.
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Affiliation(s)
- Yuki Ishido
- Department of Macromolecular Science Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Naoya Kanbayashi
- Department of Macromolecular Science Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Taka-Aki Okamura
- Department of Macromolecular Science Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Kiyotaka Onitsuka
- Department of Macromolecular Science Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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19
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Methoxy-Group Control of Helical Pitch in Stereoregular Poly(2-ethynylmethoxynaphthalene) Prepared by Rhodium Complex Catalyst. Polymers (Basel) 2019; 11:polym11010094. [PMID: 30960078 PMCID: PMC6402013 DOI: 10.3390/polym11010094] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 12/31/2018] [Accepted: 01/04/2019] [Indexed: 02/07/2023] Open
Abstract
The position of the methoxy group in a poly(n-methoxy-2-ethynylnaphthalene) (PnMeO2EN) was found to control the helical pitch of the π-conjugated polymer in the solid state. These PnMeO2ENs were stereoregularly synthesized using an Rh-complex catalyst in ethanol or toluene as the solvent. The helical structure in the solid phase was confirmed by conventional analytical methods, namely diffuse reflective ultraviolet⁻visible light (UV⁻Vis) and Raman spectroscopies, X-ray diffraction, and 13C cross-polarization magic angle spinning NMR spectroscopy, together with molecular mechanics calculations, because the as obtained polymers were insoluble in common solvents. The color of poly(6-methoxy-2-ethynylnaphthalene) (P6MeO2EN) (yellow or red) depended on the polymerization solvent, whereas no such dependency was observed for the yellow-colored P7MeO2EN and P8MeO2EN. The helical structures energetically optimized by molecular mechanics indicate that the red- and yellow-colored P6MeO2ENs form contracted and stretched helices, respectively. Due to the relatively unconstrained rotations of the 6-methoxynaphthyl moieties, the methoxy groups in P6MeO2EN are less sterically hindered along the helical axis. On the contrary, P7MeO2EN and P8MeO2EN have stretched helices due to the considerable steric hindrance imparted by their methoxy groups. The thermal cis-to-trans isomerization of P6MeO2EN in the contracted-helix form required a somewhat higher temperature than that of the stretched helix.
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20
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Yoshida Y, Mawatari Y, Tabata M. Proposed Mechanism for the High-Yield Polymerization of Oxyethyl Propiolates with Rh Complex Catalyst Using the Density Functional Theory Method. Polymers (Basel) 2019; 11:polym11010093. [PMID: 30960077 PMCID: PMC6402018 DOI: 10.3390/polym11010093] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 12/29/2018] [Accepted: 01/03/2019] [Indexed: 11/16/2022] Open
Abstract
In this study, poly(oxyethyl propiolate)s (POP)s featuring various oxyethylene derivatives are synthesized using a [Rh(norbornadiene)Cl]₂ catalyst. In particular, POPs featuring the normal oxyethylene chain in the side-chain exhibit excellent yields and high molecular weights in methanol and N,N-dimethylformamide at 40 °C, compared with poly(n-alkyl propiolate)s (PnAP)s. The high reactivity of the oxyethyl propiolate (OP) monomers is clarified by considering the time dependences of the polymerization yields of OPs and alkyl propiolates (Aps). Furthermore, the monomer structure and intermediate conformation of the Rh complex are optimized using Density Function theory (DFT) methods (B3LYP/6-31G** and B3LYP/LANL2DZ) and a polymerization mechanism is proposed.
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Affiliation(s)
- Yoshiaki Yoshida
- Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan.
| | - Yasuteru Mawatari
- Graduate School of Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan.
- Research Center for Environmentally Friendly Materials Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan.
| | - Masayoshi Tabata
- Center of Environmental Science and Disaster Mitigation for Advanced Research, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan.
- Faculty of Science and Technology, Department of Applied Chemistry and Bioscience, Chitose Institute of Science and Technology, Bibi 65-758, Hokkaido Chitose 066-8655, Japan.
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21
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Zhang Y, Wu Y, Xu R, Deng J. Chiral helical disubstituted polyacetylenes form optically active particles through precipitation polymerization. Polym Chem 2019. [DOI: 10.1039/c9py00248k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Preparation of optically active polymer particles constructed by chiral helical disubstituted polyacetylenes via precipitation polymerization.
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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
| | - Yi Wu
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
- College of Materials Science and Engineering
| | - Riwei Xu
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - 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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22
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Zhao B, Pan K, Deng J. Combining Chiral Helical Polymer with Achiral Luminophores for Generating Full-Color, On–Off, and Switchable Circularly Polarized Luminescence. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b02305] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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23
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Ousaka N, Shimizu K, Suzuki Y, Iwata T, Itakura M, Taura D, Iida H, Furusho Y, Mori T, Yashima E. Spiroborate-Based Double-Stranded Helicates: Meso-to-Racemo Isomerization and Ion-Triggered Springlike Motion of the Racemo-Helicate. J Am Chem Soc 2018; 140:17027-17039. [DOI: 10.1021/jacs.8b08268] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Naoki Ousaka
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Kaori Shimizu
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yoshimasa Suzuki
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Takuya Iwata
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Manabu Itakura
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Daisuke Taura
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Hiroki Iida
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yoshio Furusho
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Tadashi Mori
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Eiji Yashima
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
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24
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Chiral teletransmission in the cis-cisoidal sequence of copoly(substituted acetylene)s by multiple stage solvent exchange of the copolymer solution through a membrane. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.09.023] [Citation(s) in RCA: 4] [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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25
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Zhao B, Pan K, Deng J. Intense Circularly Polarized Luminescence Contributed by Helical Chirality of Monosubstituted Polyacetylenes. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01545] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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26
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Marafon G, Motta MA, Toniolo C, Moretto A. F
rom self‐assembled peptide‐ynes to peptide polyacetylenes and polydiacetylenes. Pept Sci (Hoboken) 2018. [DOI: 10.1002/pep2.24036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Giulia Marafon
- Department of Chemical SciencesUniversity of PadovaPadova35131 Italy
| | | | - Claudio Toniolo
- Department of Chemical SciencesUniversity of PadovaPadova35131 Italy
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27
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Freire F, Quiñoá E, Riguera R. Chiral nanostructure in polymers under different deposition conditions observed using atomic force microscopy of monolayers: poly(phenylacetylene)s as a case study. Chem Commun (Camb) 2017; 53:481-492. [PMID: 27827473 DOI: 10.1039/c6cc05598b] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Dynamic poly(phenylacetylene)s (PPAs) adopt helical structures with different elongation or helical senses depending on the types of pendants. Hence, a good knowledge of the parameters that define their structures becomes a key factor in the understanding of their properties and functions. Herein, the techniques used for the study of the secondary structure of PPAs using atomic-force microscopy (AFM) are presented, with special attention directed towards the methods used for the preparation of monolayers, and their consequences in the quality of the AFM images. Thus, monolayers formed by drop casting, spin coating followed by crystallization or annealing, Langmuir-Blodgett and Langmuir-Schaefer methods, onto highly oriented pyrolytic graphite (HOPG) or mica, are described, together with the AFM images and the resulting helical structure obtained for different PPAs. Furthermore, some conclusions are drawn both on the adequacy of the different techniques for the formation of monolayers and on the solid supports utilized to elucidate the secondary structure of different PPAs.
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Affiliation(s)
- F Freire
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - E Quiñoá
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - R Riguera
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
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28
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Wang S, Feng X, Zhang J, Yu P, Guo Z, Li Z, Wan X. Helical Conformations of Poly(3,5-disubstituted phenylacetylene)s Tuned by Pendant Structure and Solvent. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00615] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Sheng Wang
- 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
| | - Xuanyu Feng
- 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
| | - Jie 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
| | - Ping Yu
- School
of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, China
| | - Zongxia Guo
- School
of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, China
| | - Zhibo Li
- School
of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, China
| | - Xinhua Wan
- 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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29
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Yoshida Y, Mawatari Y, Sasaki T, Hiraoki T, Wagner M, Müllen K, Tabata M. Strictly Alternating Sequences When Copolymerizing Racemic and Chiral Acetylene Monomers with an Organo-Rhodium Catalyst. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Toshifumi Hiraoki
- Graduate
School of Engineering, Department of Applied Physics, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Manfred Wagner
- Max Planck Institute
for Polymer Research, Ackermannweg
10, D-55128 Mainz, Germany
| | - Klaus Müllen
- Max Planck Institute
for Polymer Research, Ackermannweg
10, D-55128 Mainz, Germany
| | - Masayoshi Tabata
- Faculty of
Science and Technology, Department of Applied Chemistry and Bioscience, Chitose Institute of Science and Technology, Bibi 65-758, Chitose, Hokkaido 066-8655, Japan
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30
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Zhao B, Deng J, Deng J. Optically Active Helical Polyacetylene Self-Assembled into Chiral Micelles Used As Nanoreactor for Helix-Sense-Selective Polymerization. ACS Macro Lett 2017; 6:6-10. [PMID: 35632871 DOI: 10.1021/acsmacrolett.6b00808] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Chiral micelles have been drawing ever-increasing attention because of their potentials in mimicking the unique stereochemical effects of enzymes. This article reports on the first success in preparing chiral micelles through self-assembly of helical polyacetylene bearing cholic acid pendants. The micelles were further used as chiral nanoreactor, in which achiral acetylenic monomer smoothly underwent helix-sense-selective polymerization (HSSP). The HSSPs directly established optically active core/shell nanoparticles whose shell and core both were constructed by helical polymers. The shells (or micelles) provided a protective effect for the preferably induced one-handed helical polymer chains in the cores. The present work provides insights into the self-assembly of chiral helical polymers, and also provides a powerful strategy for constructing novel chiral polymer nanoarchitectures.
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Affiliation(s)
- Biao Zhao
- State Key Laboratory of Chemical Resource Engineering and ‡College of Materials
Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jinrui Deng
- State Key Laboratory of Chemical Resource Engineering and ‡College of Materials
Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jianping Deng
- State Key Laboratory of Chemical Resource Engineering and ‡College of Materials
Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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31
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Ousaka N, Yashima E. Development of Helical Oligomers and Polymers Capable of Extension and Contraction Motions. J SYN ORG CHEM JPN 2017. [DOI: 10.5059/yukigoseikyokaishi.75.466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Naoki Ousaka
- Graduate School of Engineering, Nagoya University
| | - Eiji Yashima
- Graduate School of Engineering, Nagoya University
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32
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Yashima E, Ousaka N, Taura D, Shimomura K, Ikai T, Maeda K. Supramolecular Helical Systems: Helical Assemblies of Small Molecules, Foldamers, and Polymers with Chiral Amplification and Their Functions. Chem Rev 2016; 116:13752-13990. [PMID: 27754649 DOI: 10.1021/acs.chemrev.6b00354] [Citation(s) in RCA: 1198] [Impact Index Per Article: 149.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In this review, we describe the recent advances in supramolecular helical assemblies formed from chiral and achiral small molecules, oligomers (foldamers), and helical and nonhelical polymers from the viewpoints of their formations with unique chiral phenomena, such as amplification of chirality during the dynamic helically assembled processes, properties, and specific functionalities, some of which have not been observed in or achieved by biological systems. In addition, a brief historical overview of the helical assemblies of small molecules and remarkable progress in the synthesis of single-stranded and multistranded helical foldamers and polymers, their properties, structures, and functions, mainly since 2009, will also be described.
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Affiliation(s)
- Eiji Yashima
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Naoki Ousaka
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Daisuke Taura
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Kouhei Shimomura
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan
| | - Tomoyuki Ikai
- Graduate School of Natural Science and Technology, Kanazawa University , Kakuma-machi, Kanazawa 920-1192, Japan
| | - Katsuhiro Maeda
- Graduate School of Natural Science and Technology, Kanazawa University , Kakuma-machi, Kanazawa 920-1192, Japan
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33
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Yu H, Yong X, Liang J, Deng J, Wu Y. Materials Established for Enantioselective Release of Chiral Compounds. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b01031] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Huli Yu
- State
Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- College
of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xueyong Yong
- State
Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- College
of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Junya Liang
- State
Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- College
of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jianping Deng
- State
Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- College
of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Youping Wu
- College
of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- State
Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
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34
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Tabata M, Mawatari Y. Emerging π-Conjugated Stretched and Contracted Helices and their Mutual Conversions of Substituted Polyacetylenes Prepared using an Organo-rhodium Catalyst. POLYM REV 2016. [DOI: 10.1080/15583724.2016.1176038] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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35
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36
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Zhang H, Zhao B, Deng J. Optically Active Hybrid Materials Constructed from Helically Substituted Polyacetylenes. CHEM REC 2016; 16:964-76. [DOI: 10.1002/tcr.201500298] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Indexed: 01/08/2023]
Affiliation(s)
- Huanyu Zhang
- State Key Laboratory of Chemical Resource Engineering; Beijing University of Chemical Technology; Beijing 100029 P.R. China
- College of Materials Science and Engineering Beijing University of Chemical Technology; Beijing 100029 P.R. China
- State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology; Beijing 100029 P.R. China
| | - Biao Zhao
- State Key Laboratory of Chemical Resource Engineering; Beijing University of Chemical Technology; Beijing 100029 P.R. China
- College of Materials Science and Engineering Beijing University of Chemical Technology; Beijing 100029 P.R. China
| | - Jianping Deng
- State Key Laboratory of Chemical Resource Engineering; Beijing University of Chemical Technology; Beijing 100029 P.R. China
- College of Materials Science and Engineering Beijing University of Chemical Technology; Beijing 100029 P.R. China
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37
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Suzuki Y, Nakamura T, Iida H, Ousaka N, Yashima E. Allosteric Regulation of Unidirectional Spring-like Motion of Double-Stranded Helicates. J Am Chem Soc 2016; 138:4852-9. [DOI: 10.1021/jacs.6b00787] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yoshimasa Suzuki
- Department
of Molecular Design
and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Taiki Nakamura
- Department
of Molecular Design
and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Hiroki Iida
- Department
of Molecular Design
and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - Naoki Ousaka
- 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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38
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Barboiu M, Stadler AM, Lehn JM. Kontrollierte Faltungs-, Bewegungs- und konstitutionelle Dynamik in polyheterocyclischen molekularen Strängen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201505394] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Mihail Barboiu
- Institut Européen des Membranes; CNRS UMR 5635; Place Eugène Bataillon, CC 047 34095 Montpellier Frankreich
| | - Adrian-Mihail Stadler
- Institut de Science et d'Ingénierie Supramoléculaires (UMR 7006); Université de Strasbourg; 8 Allée Gaspard Monge 67000 Strasbourg Frankreich
- Institut für Nanotechnologie (INT); Karlsruhe Institut für Technologie (KIT); 76344 Eggenstein-Leopoldshafen Deutschland
| | - Jean-Marie Lehn
- Institut de Science et d'Ingénierie Supramoléculaires (UMR 7006); Université de Strasbourg; 8 Allée Gaspard Monge 67000 Strasbourg Frankreich
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39
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Barboiu M, Stadler AM, Lehn JM. Controlled Folding, Motional, and Constitutional Dynamic Processes of Polyheterocyclic Molecular Strands. Angew Chem Int Ed Engl 2016; 55:4130-54. [PMID: 26894262 DOI: 10.1002/anie.201505394] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Indexed: 12/20/2022]
Abstract
General design principles have been developed for the control of the structural features of polyheterocyclic strands and their effector-modulated shape changes. Induced defined molecular motions permit designed enforcement of helical as well as linear molecular shapes. The ability of such molecular strands to bind metal cations allows the generation of coiling/uncoiling processes between helically folded and extended linear states. Large molecular motions are produced on coordination of metal ions, which may be made reversible by competition with an ancillary complexing agent and fueled by sequential acid/base neutralization energy. The introduction of hydrazone units into the strands confers upon them constitutional dynamics, whereby interconversion between different strand compositions is achieved through component exchange. These features have relevance for nanomechanical devices. We present a morphological and functional analysis of such systems developed in our laboratories.
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Affiliation(s)
- Mihail Barboiu
- Institut Européen des Membranes, CNRS UMR 5635, Place Eugène Bataillon, CC 047, 34095, Montpellier, France
| | - Adrian-Mihail Stadler
- Institut de Science et d'Ingénierie Supramoléculaires (UMR 7006), Université de Strasbourg, 8 Allée Gaspard Monge, 67000, Strasbourg, France.,Institut für Nanotechnologie (INT), Karlsruhe Institut für Technologie (KIT), 76344, Eggenstein-Leopoldshafen, Germany
| | - Jean-Marie Lehn
- Institut de Science et d'Ingénierie Supramoléculaires (UMR 7006), Université de Strasbourg, 8 Allée Gaspard Monge, 67000, Strasbourg, France.
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40
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Rodríguez R, Ignés-Mullol J, Sagués F, Quiñoá E, Riguera R, Freire F. Helical sense selective domains and enantiomeric superhelices generated by Langmuir-Schaefer deposition of an axially racemic chiral helical polymer. NANOSCALE 2016; 8:3362-3367. [PMID: 26791332 DOI: 10.1039/c5nr07990j] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The chiral polymer poly-(R)-1 behaves in solution, despite its chiral pendants, as a dynamic axially racemic (i.e., 1 : 1) mixture of left- and right-handed helices, but its deposition on graphite by a Langmuir-Schaefer (LS) technique leads to a helical sense-selective packing that forms separate enantiomeric domains of left- and right-handed helical chains observed by high resolution atomic force microscopy (AFM). The polymer structure within these domains is very uniform, seldom altered by the presence of reversals, grouped always in contiguous pairs maintaining a single helical sense along the polymer chain. The LS deposition technique has been shown to be crucial to obtain good quality monolayers from poly-(R)-1 and other poly(phenylacetylene)s (PPAs: poly-2, poly-3 and poly-4) with short pendants, where spin coating, drop casting and Langmuir-Blodgett (LB) failed, and suggests that this technique could be the method of choice for the preparation of 2D monolayers for high resolution AFM studies of PPAs with short pendants. Key helical parameters (i.e., sense, pitch, packing angle) are easily measured in this way.
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Affiliation(s)
- R Rodríguez
- Department of Organic Chemistry and Center for Research in Biological Chemistry and Molecular Materials, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
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41
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Zhao B, Deng J, Deng J. Emulsification-Induced Homohelicity in Racemic Helical Polymer for Preparing Optically Active Helical Polymer Nanoparticles. Macromol Rapid Commun 2016; 37:568-74. [DOI: 10.1002/marc.201500645] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 12/16/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Biao Zhao
- State Key Laboratory of Chemical Resource Engineering; Beijing University of Chemical Technology; Beijing 100029 China
- College of Materials Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Jinrui Deng
- State Key Laboratory of Chemical Resource Engineering; Beijing University of Chemical Technology; Beijing 100029 China
- College of Materials Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Jianping Deng
- State Key Laboratory of Chemical Resource Engineering; Beijing University of Chemical Technology; Beijing 100029 China
- College of Materials Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 China
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42
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Zhao B, Deng J. Emulsion Polymerization of Acetylenics for Constructing Optically Active Helical Polymer Nanoparticles. POLYM REV 2016. [DOI: 10.1080/15583724.2015.1136642] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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43
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Arias S, Bergueiro J, Freire F, Quiñoá E, Riguera R. Chiral Nanostructures from Helical Copolymer-Metal Complexes: Tunable Cation-π Interactions and Sergeants and Soldiers Effect. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:238-244. [PMID: 26578292 DOI: 10.1002/smll.201502276] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 10/13/2015] [Indexed: 06/05/2023]
Abstract
Poly(phenylacetylene) (PPA) copolymers containing (R)- or (S)-MPA as minor chiral pendant can be forced to selectively adopt the right- o left-handed helix, in the presence of small amounts of Na(+) or Ag(+) ("Sergeants and Soldiers Effect") by addition of a donor cosolvent. The helical sense depends exclusively on the chiral monomer/donor cosolvent ratio, and this allows a perfect on/off tuning of the helicity of the copolymer. When the amount of the donor cosolvent is low, the metal ion complex is stabilized by a cation-π interaction, which is selectively cleaved when the amount of cosolvent is higher. Macroscopically chiral nanospheres and nanotubes composed by helical copolymers with P or M helical sense are also described. Our results demonstrate that it is possible to obtain the two enantiomeric helical structures (P and M helicities) and the corresponding nanospheres and nanotubes from a single helical copolymer, by controlled activation/deactivation of the Sergeant and Soldiers Effect with a donor cosolvent.
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Affiliation(s)
- Sandra Arias
- Centre for Research in Biological Chemistry and Molecular Materials (CIQUS), University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Julián Bergueiro
- Centre for Research in Biological Chemistry and Molecular Materials (CIQUS), University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Félix Freire
- Centre for Research in Biological Chemistry and Molecular Materials (CIQUS), University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Emilio Quiñoá
- Centre for Research in Biological Chemistry and Molecular Materials (CIQUS), University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Ricardo Riguera
- Centre for Research in Biological Chemistry and Molecular Materials (CIQUS), University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
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44
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Zhao B, Deng J, Yang W. Emulsion copolymerization of substituted acetylenes for constructing optically active helical polymer nanoparticles. Synergistic effects and helicity inversion. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Biao Zhao
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology; Beijing 100029 China
- College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 China
| | - Jianping Deng
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology; Beijing 100029 China
- College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 China
| | - Wantai Yang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology; Beijing 100029 China
- College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 China
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45
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Zhao B, Deng J. Micelle-provided microenvironment facilitating the formation of single-handed helical polymer-based nanoparticles. RSC Adv 2016. [DOI: 10.1039/c6ra10610b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Micelles provide microenvironment effects for asymmetric polymerization: an unprecedented methodology for controlling the preferential helicity of synthetic helical polymers.
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Affiliation(s)
- Biao Zhao
- 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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46
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Jin YJ, Kim H, Miyata M, Yin G, Kaneko T, Teraguchi M, Aoki T, Kwak G. Influence of a hydrodynamic environment on chain rigidity, liquid crystallinity, absorptivity, and photoluminescence of hydrogen-bonding-assisted helical poly(phenylacetylene). RSC Adv 2016. [DOI: 10.1039/c6ra01940d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The chain rigidity, liquid crystallinity, absorptivity, and photoluminescence of a helical poly(phenylacetylene) derivative varied significantly depending on the solvent, owing to the conformational changes based on intramolecular hydrogen bonds.
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Affiliation(s)
- Young-Jae Jin
- School of Applied Chemical Engineering
- Major in Polymer Science and Engineering
- Kyungpook National University
- Daegu 702-701
- Korea
| | - Hyojin Kim
- School of Applied Chemical Engineering
- Major in Polymer Science and Engineering
- Kyungpook National University
- Daegu 702-701
- Korea
| | - Mari Miyata
- Department of Chemistry and Chemical Engineering
- Graduate School of Science and Technology
- Center for Transdisciplinary Research
- Niigata University
- Niigata 950-2181
| | - Guanwu Yin
- Department of Chemistry and Chemical Engineering
- Graduate School of Science and Technology
- Center for Transdisciplinary Research
- Niigata University
- Niigata 950-2181
| | - Takashi Kaneko
- Department of Chemistry and Chemical Engineering
- Graduate School of Science and Technology
- Center for Transdisciplinary Research
- Niigata University
- Niigata 950-2181
| | - Masahiro Teraguchi
- Department of Chemistry and Chemical Engineering
- Graduate School of Science and Technology
- Center for Transdisciplinary Research
- Niigata University
- Niigata 950-2181
| | - Toshiki Aoki
- Department of Chemistry and Chemical Engineering
- Graduate School of Science and Technology
- Center for Transdisciplinary Research
- Niigata University
- Niigata 950-2181
| | - Giseop Kwak
- School of Applied Chemical Engineering
- Major in Polymer Science and Engineering
- Kyungpook National University
- Daegu 702-701
- Korea
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47
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Chen H, Zhou J, Deng J. Helical polymer/Fe3O4 NPs constructing optically active, magnetic core/shell microspheres: preparation by emulsion polymerization and recycling application in enantioselective crystallization. Polym Chem 2016. [DOI: 10.1039/c5py01549a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Novel core/shell microspheres showed both optical activity and magneticity, and efficiently induced enantioselective crystallization on threonine with ee of 90%.
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Affiliation(s)
- Huaiyu Chen
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
- College of Materials Science and Engineering
| | - Jinyong Zhou
- 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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48
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Liang J, Wu Y, Deng X, Deng J. Optically Active Porous Materials Constructed by Chirally Helical Substituted Polyacetylene through a High Internal Phase Emulsion Approach and the Application in Enantioselective Crystallization. ACS Macro Lett 2015; 4:1179-1183. [PMID: 35614802 DOI: 10.1021/acsmacrolett.5b00613] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This article reports the first optically active macroporous materials constructed by helical substituted polyacetylene and prepared by a high internal phase emulsion (HIPE) technique. The macroporous (∼3 μm) materials were fabricated simply through polymerization of the continuous phase in HIPEs. The porous structures of the resulting materials can be adjusted by varying the fraction of the dispersed phase. The obtained materials were characterized by regular pore morphology, high porosity, and low density. Circular dichroism and UV-vis absorption spectra demonstrated that the substituted polyacetylene forming the materials adopted chirally helical conformations, which endowed the materials with considerable optical activity. The optically active porous materials were used as chiral inducers and efficiently induced enantioselective crystallization of threonine and alanine racemates. l-Threonine and l-alanine were preferably induced to form crystals from the respective racemic solutions. The prepared materials open a new type of functional chiral materials with potential applications in asymmetric catalysis, chiral resolution, etc.
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Affiliation(s)
- Junya Liang
- State Key Laboratory of Chemical
Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yi Wu
- State Key Laboratory of Chemical
Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xuesheng Deng
- State Key Laboratory of Chemical
Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jianping Deng
- State Key Laboratory of Chemical
Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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49
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Lin J, Zhang H, Liang J, Deng J. Helical Polymer Particles Derived from Aromatic Acetylenics and Prepared by Suspension Polymerization. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500229] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Jiangfeng Lin
- State Key Laboratory of Chemical Resource Engineering College of Materials Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 P.R. China
| | - Haiyang Zhang
- State Key Laboratory of Chemical Resource Engineering College of Materials Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 P.R. China
| | - Junya Liang
- State Key Laboratory of Chemical Resource Engineering College of Materials Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 P.R. China
| | - Jianping Deng
- State Key Laboratory of Chemical Resource Engineering College of Materials Science and Engineering; Beijing University of Chemical Technology; Beijing 100029 P.R. China
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50
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Huang H, Yuan Y, Deng J. Helix-Sense-Selective Precipitation Polymerization of Achiral Monomer for Preparing Optically Active Helical Polymer Particles. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00811] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Huajun Huang
- State Key Laboratory of Chemical Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yunbin Yuan
- State Key Laboratory of Chemical Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jianping Deng
- State Key Laboratory of Chemical Resource Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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