1
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Li X, Luo Y, Zhou S, Wang J, Lu F, Wang S, Deng Q. Fluorescence sensing of water in various organic solvents based on a novel cyclic polymer. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 319:124554. [PMID: 38833888 DOI: 10.1016/j.saa.2024.124554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 05/12/2024] [Accepted: 05/27/2024] [Indexed: 06/06/2024]
Abstract
A sensor capable of sensing of water in various organic solvents ranging from water-soluble to water-miscible solvents is still a challenging task. In this research, a cyclic polymer fluorescence chemosensor (CPFC) has been developed for sensing of water by turn-on model in 9 organic solvents and turn-off model in DMA, where the broadest concentration range and the lowest detection limit was obtained for water in DMA (10 %-90 %) and dioxane (0.011 %), respectively. The sensing mechanism is explored by theory calculation and experimental investigation. The amphiphilic nature endows the polymer probe with great potential for measuring various contaminants from aqueous and nonaqueous mediums. Furthermore, the present search highlights the potential applications of cyclic polymer as fluorescence probes in the field of sensing.
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Affiliation(s)
- Xiaoxia Li
- Tianjin Key Laboratory of Multiplexed Identification for Port Hazardous Chemicals, College of Science, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yuchen Luo
- Tianjin Key Laboratory of Multiplexed Identification for Port Hazardous Chemicals, College of Science, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Shufang Zhou
- Tianjin Key Laboratory of Multiplexed Identification for Port Hazardous Chemicals, College of Science, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Jiayi Wang
- Tianjin Key Laboratory of Multiplexed Identification for Port Hazardous Chemicals, College of Science, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Futai Lu
- Tianjin Key Laboratory of Multiplexed Identification for Port Hazardous Chemicals, College of Science, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Shuo Wang
- Tianjin Key Laboratory of Multiplexed Identification for Port Hazardous Chemicals, College of Science, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China; Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China.
| | - Qiliang Deng
- Tianjin Key Laboratory of Multiplexed Identification for Port Hazardous Chemicals, College of Science, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China.
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2
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Ma C, Wang H, Sun R, Liao X, Han H, Xie M. Polyacetylene-Based Asymmetric Bicyclic Polymer by Blocking-Cyclization Technique. Macromol Rapid Commun 2024; 45:e2300628. [PMID: 38227809 DOI: 10.1002/marc.202300628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/31/2023] [Indexed: 01/18/2024]
Abstract
A rare asymmetric bicyclic polymer containing different length of conjugated polyacetylene segments is synthesized by metathesis cyclopolymerization-mediated blocking-cyclization technique. The size of each single ring differs from each other, and the unique cyclic polymer topology is controlled by adjusting the feed ratio of monofunctional monomer to catalyst. The topological difference between linear and bicyclic polymers is confirmed by several techniques, and the visualized morphology of asymmetric bicyclic polymer is directly observed without tedious post-modification process. The photoelectric and thermal properties of polymers are investigated. This work expands the pathway for the derivation of cyclic polymers, and such unique topological structure enriches the diversity of cyclic polymer classes.
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Affiliation(s)
- Cuihong Ma
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
- Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Hao Wang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
| | - Ruyi Sun
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
| | - Xiaojuan Liao
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
| | - Huijing Han
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
| | - Meiran Xie
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
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3
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Xia X, Yuan X, Zhang G, Su Z. Antifouling Surfaces Based on Polyzwitterion Loop Brushes. ACS APPLIED MATERIALS & INTERFACES 2023; 15:47520-47530. [PMID: 37773963 DOI: 10.1021/acsami.3c10267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/01/2023]
Abstract
Antifouling surfaces have attracted increasing interest in recent years due to their potential application in various fields. In this work, we report a loop polyzwitterionic coating that exhibits excellent resistance to protein adsorption. Triblock and diblock copolymers of 2-[(2-hydroxyethyl)disulfanyl]ethyl methacrylate) (HSEMA) and 2-(dimethylamino)ethyl methacrylate) (DMAEMA) were synthesized by atom-transferred radical polymerization, followed by betainization of the DMAEMA block with 1,3-propane sultone and reduction of the disulfide bond in HSEMA to yield a triblock copolymer comprising a zwitterionic poly(sulfobetaine methacrylate) (PSBMA) midblock and poly(2-sulfanylethyl methacrylate) (PSEMA) terminal blocks as well as its diblock analogue that was of the same composition as the former and half the chain length. Both copolymers adsorbed to the gold substrate via the thiol groups in the terminal PSEMA block(s), creating loop and linear PSBMA brush coatings of comparable thickness, as revealed by X-ray photoelectron spectroscopy and ellipsometry. Adsorption of bovine serum albumin and fibrinogen as model proteins from solution to these surfaces was investigated by a quartz crystal microbalance with dissipation and confocal laser scanning microscopy (CLSM), and platelet and bacterial adhesions were assessed by scanning electron microscopy and CLSM. The results demonstrate that both linear and loop polyzwitterion brushes are excellent in resisting the adsorption of the foulants, and the loop brushes are superior to the linear analogues.
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Affiliation(s)
- Xiaoyu Xia
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Xiaodie Yuan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Guangyu Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Zhaohui Su
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China
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4
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Chen C, Weil T. Cyclic polymers: synthesis, characteristics, and emerging applications. NANOSCALE HORIZONS 2022; 7:1121-1135. [PMID: 35938292 DOI: 10.1039/d2nh00242f] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Cyclic polymers with a ring-like topology and no chain ends are a unique class of macromolecules. In the past several decades, significant advances have been made to prepare these fascinating polymers, which allow for the exploration of their topological effects and potential applications in various fields. In this Review, we first describe representative synthetic strategies for making cyclic polymers and their derivative topological polymers with more complex structures. Second, the unique physical properties and self-assembly behavior of cyclic polymers are discussed by comparing them with their linear analogues. Special attention is paid to highlight how polymeric rings can assemble into hierarchical macromolecular architectures. Subsequently, representative applications of cyclic polymers in different fields such as drug and gene delivery and surface functionalization are presented. Last, we envision the following key challenges and opportunities for cyclic polymers that may attract future attention: large-scale synthesis, efficient purification, programmable folding and assembly, and expansion of applications.
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Affiliation(s)
- Chaojian Chen
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, USA
| | - Tanja Weil
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
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5
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Multicyclic Topology-Enhanced Micelle Stability and pH-Sensitivity. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Nishida K, Anada T, Tanaka M. Roles of interfacial water states on advanced biomedical material design. Adv Drug Deliv Rev 2022; 186:114310. [PMID: 35487283 DOI: 10.1016/j.addr.2022.114310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/12/2022] [Accepted: 04/21/2022] [Indexed: 12/15/2022]
Abstract
When biomedical materials come into contact with body fluids, the first reaction that occurs on the material surface is hydration; proteins are then adsorbed and denatured on the hydrated material surface. The amount and degree of denaturation of adsorbed proteins affect subsequent cell behavior, including cell adhesion, migration, proliferation, and differentiation. Biomolecules are important for understanding the interactions and biological reactions of biomedical materials to elucidate the role of hydration in biomedical materials and their interaction partners. Analysis of the water states of hydrated materials is complicated and remains controversial; however, knowledge about interfacial water is useful for the design and development of advanced biomaterials. Herein, we summarize recent findings on the hydration of synthetic polymers, supramolecular materials, inorganic materials, proteins, and lipid membranes. Furthermore, we present recent advances in our understanding of the classification of interfacial water and advanced polymer biomaterials, based on the intermediate water concept.
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Affiliation(s)
- Kei Nishida
- Institute for Materials Chemistry and Engineering Kyushu university, 744 Motooka, Nishi-ku Fukuoka 819-0395, Japan; Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Japan(1)
| | - Takahisa Anada
- Institute for Materials Chemistry and Engineering Kyushu university, 744 Motooka, Nishi-ku Fukuoka 819-0395, Japan
| | - Masaru Tanaka
- Institute for Materials Chemistry and Engineering Kyushu university, 744 Motooka, Nishi-ku Fukuoka 819-0395, Japan.
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7
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Wang H, Zhang Z, Chen J, Lian C, Han X, Liu H. Conformation-dominated surface antifouling and aqueous lubrication. Colloids Surf B Biointerfaces 2022; 214:112452. [PMID: 35325866 DOI: 10.1016/j.colsurfb.2022.112452] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/03/2022] [Accepted: 03/07/2022] [Indexed: 12/28/2022]
Abstract
Antifouling and aqueous lubrication are important properties for biomaterials, especially for those with implantation purposes. In order to better understand the polymer conformation dependence of the surface antifouling and lubrication properties, poly(ethylene glycol) (PEG) polymers with mono-functional and difunctional catechol anchors were designed and anchored on surface to adopt tail and loop conformations. Diblock and triblock copolymers with poly(dopamine methacrylamide) (PDMA) block as anchors and PEG block as the main body were synthesized and anchored on silicon surfaces by a "grafting to" strategy. The chemical composition, film thickness, and surface roughness of both coatings were controlled to be similar to give a direct comparison of looped brushes and tailed analogues. Then, the antifouling and surface friction behaviors were detected to verify the topological conformation effect of PEG polymer brushes. Results showed that PEG triblock copolymer modified surface exhibited an obviously better antifouling property and a lower friction coefficient of ∼0.011 than that of PEG diblock copolymer modified surface. Additionally, calculation and simulation results demonstrated that triblock copolymer had higher adsorption energy and anchored on surface with looped conformation. It is indicated that the strongly anchored PEG loops are effective for excellent antifouling and lubricating properties due to its strong hydration and steric hindrance. The conformation-dominated enhanced antifouling and reduced interfacial friction is an effective method for the development of excellent antifouling surfaces.
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Affiliation(s)
- Hanhan Wang
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Zekai Zhang
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Jiao Chen
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Cheng Lian
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Xia Han
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
| | - Honglai Liu
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
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8
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Wang X, Shan M, Zhang S, Chen X, Liu W, Chen J, Liu X. Stimuli-Responsive Antibacterial Materials: Molecular Structures, Design Principles, and Biomedical Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2104843. [PMID: 35224893 PMCID: PMC9069201 DOI: 10.1002/advs.202104843] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 01/30/2022] [Indexed: 05/03/2023]
Abstract
Infections are regarded as the most severe complication associated with human health, which are urgent to be solved. Stimuli-responsive materials are appealing therapeutic platforms for antibacterial treatments, which provide great potential for accurate theranostics. In this review, the advantages, the response mechanisms, and the key design principles of stimuli-responsive antibacterial materials are highlighted. The biomedical applications, the current challenges, and future directions of stimuli-responsive antibacterial materials are also discussed. First, the categories of stimuli-responsive antibacterial materials are comprehensively itemized based on different sources of stimuli, including external physical environmental stimuli (e.g., temperature, light, electricity, salt, etc.) and bacterial metabolites stimuli (e.g., acid, enzyme, redox, etc.). Second, structural characteristics, design principles, and biomedical applications of the responsive materials are discussed, and the underlying interrelationships are revealed. The molecular structures and design principles are closely related to the sources of stimuli. Finally, the challenging issues of stimuli-responsive materials are proposed. This review will provide scientific guidance to promote the clinical applications of stimuli-responsive antibacterial materials.
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Affiliation(s)
- Xianghong Wang
- School of Materials Science and EngineeringThe Key Laboratory of Material Processing and Mold of Ministry of EducationHenan Key Laboratory of Advanced Nylon Materials and ApplicationZhengzhou UniversityZhengzhou450001China
| | - Mengyao Shan
- School of Materials Science and EngineeringThe Key Laboratory of Material Processing and Mold of Ministry of EducationHenan Key Laboratory of Advanced Nylon Materials and ApplicationZhengzhou UniversityZhengzhou450001China
| | - Shike Zhang
- School of Materials Science and EngineeringThe Key Laboratory of Material Processing and Mold of Ministry of EducationHenan Key Laboratory of Advanced Nylon Materials and ApplicationZhengzhou UniversityZhengzhou450001China
| | - Xin Chen
- College of Food Science and EngineeringNational Engineering Research Center for Wheat & Corn Further ProcessingHenan University of TechnologyZhengzhou450001China
| | - Wentao Liu
- School of Materials Science and EngineeringThe Key Laboratory of Material Processing and Mold of Ministry of EducationHenan Key Laboratory of Advanced Nylon Materials and ApplicationZhengzhou UniversityZhengzhou450001China
| | - Jinzhou Chen
- School of Materials Science and EngineeringThe Key Laboratory of Material Processing and Mold of Ministry of EducationHenan Key Laboratory of Advanced Nylon Materials and ApplicationZhengzhou UniversityZhengzhou450001China
| | - Xuying Liu
- School of Materials Science and EngineeringThe Key Laboratory of Material Processing and Mold of Ministry of EducationHenan Key Laboratory of Advanced Nylon Materials and ApplicationZhengzhou UniversityZhengzhou450001China
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9
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Copp SM, Hamblin RL, Swingle K, Rai D, Urban VS, Ivanov SA, Montaño GA. Complex pH-Dependent Interactions between Weak Polyelectrolyte Block Copolymer Micelles and Molecular Fluorophores. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:2038-2045. [PMID: 35119286 DOI: 10.1021/acs.langmuir.1c02889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Amphiphilic block copolymers with weak polyelectrolyte blocks can assemble stimulus-responsive nanostructures and interfaces. Applications of these materials in drug delivery, biomimetics, and sensing largely rely on the well-understood swelling of polyelectrolyte chains upon deprotonation, often induced by changes in pH or ionic strength. This deprotonation can also tune interfacial interactions between the polyelectrolyte blocks and surrounding solution, an effect which is less studied than morphological swelling of polyelectrolytes but can be just as critical for intended function. Here, we investigate whether the pH-driven morphological response of polyelectrolyte-bearing nanostructures also affects the interactions of these nanostructures with molecules in solution, using micelles of a short-chain polybutadiene-block-poly(acrylic acid) (pBd-pAA) as a model system. We introduce a Förster resonance energy transfer (FRET) approach to probe interactions between micelles and fluorescent molecular solutes as a function of solution pH. As expected, the pAA corona of these pBd-pAA micelles increases in thickness monotonically as a function of pH. However, FRET efficiency, which provides a metric of the spatial proximity of fluorescently labeled micelles and freely diffusing fluorophores, exhibits complex nonmonotonic behavior as a function of pH, indicating that the average separation of micelles and acceptor fluorophores is not strictly correlated with micelle swelling. Dialysis experiments quantify the affinity of fluorophores for micelles as a function of pH, confirming that changes in FRET are driven almost entirely by the pH-dependent affinity of the pAA block for the investigated molecular fluorophores, not simply by a shape change of the pAA corona. This study provides key insights into the interfacial interactions between weak-polyelectrolyte-bearing nanostructures and molecular solutes, of importance for the development of their stimulus-responsive applications.
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Affiliation(s)
- Stacy M Copp
- Department of Materials Science and Engineering, University of California, Irvine, Irvine, California 92697-2585, United States
- Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, United States
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, Irvine, California 92697-2580, United States
| | - Ryan L Hamblin
- Center for Integrated Nanotechnologies, Los Alamos National Laboratories, Los Alamos, New Mexico 87545, United States
| | - Kirstie Swingle
- Center for Integrated Nanotechnologies, Los Alamos National Laboratories, Los Alamos, New Mexico 87545, United States
| | - Durgesh Rai
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Volker S Urban
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Sergei A Ivanov
- Center for Integrated Nanotechnologies, Los Alamos National Laboratories, Los Alamos, New Mexico 87545, United States
| | - Gabriel A Montaño
- Department of Applied Physics and Materials Science, Northern Arizona University, Flagstaff, Arizona 86011, United States
- Center for Materials Interfaces in Research and Applications, Northern Arizona University, Flagstaff, Arizona 86011, United States
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10
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Nagao M, Hoshino Y, Miura Y. Synthesis of well-defined cyclic glycopolymers and the relationship between their physical properties and their interaction with lectins. Polym Chem 2022. [DOI: 10.1039/d2py00941b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The suppressed molecular mobility of the cyclic glycopolymers was found to weaken their interactions with target proteins, demonstrating the influence of polymer topology on molecular recognition.
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Affiliation(s)
- Masanori Nagao
- Department of Chemical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yu Hoshino
- Department of Applied Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yoshiko Miura
- Department of Chemical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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11
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Mato Y, Sudo M, Marubayashi H, Ree BJ, Tajima K, Yamamoto T, Jinnai H, Isono T, Satoh T. Densely Arrayed Cage-Shaped Polymer Topologies Synthesized via Cyclopolymerization of Star-Shaped Macromonomers. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01230] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yoshinobu Mato
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Maho Sudo
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Hironori Marubayashi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Brian J. Ree
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Kenji Tajima
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Takuya Yamamoto
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Hiroshi Jinnai
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Takuya Isono
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Toshifumi Satoh
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
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12
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Yu Y, Brió Pérez M, Cao C, de Beer S. Switching (bio-) adhesion and friction in liquid by stimulus responsive polymer coatings. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110298] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Trachsel L, Ramakrishna SN, Romio M, Spencer ND, Benetti EM. Topology and Molecular Architecture of Polyelectrolytes Determine Their pH-Responsiveness When Assembled on Surfaces. ACS Macro Lett 2021; 10:90-97. [PMID: 35548981 DOI: 10.1021/acsmacrolett.0c00750] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Polymer composition and topology of surface-grafted polyacids determine the amplitude of their pH-induced swelling transition. The intrinsic steric constraints characterizing cyclic poly(2-carboxypropyl-2-oxazoline) (c-PCPOXA) and poly(2-carboxyethyl-2-oxazoline) (c-PCEOXA) forming brushes on Au surfaces induce an enhancement in repulsive interactions between charged polymer segments upon deprotonation, leading to an amplified expansion and a significant increment in swelling with respect to their linear analogues of similar molar mass. On the other hand, it is the composition of polyacid grafts that governs their hydration in both undissociated and ionized forms, determining the degree of swelling during their pH-induced transition.
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Affiliation(s)
- Lucca Trachsel
- Tissue Engineering + Biofabrication Laboratory, Department of Health Sciences and Technology, ETH Zürich, 8093 Zürich, Switzerland
| | - Shivaprakash N. Ramakrishna
- Laboratory for Soft Materials and Interfaces, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
| | - Matteo Romio
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
- Biointerfaces, Swiss Federal Laboratories for Materials Science and Technology (EMPA), Lerchenfeldstrasse 5, CH-9014, St. Gallen, Switzerland
| | - Nicholas D. Spencer
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
| | - Edmondo M. Benetti
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
- Biointerfaces, Swiss Federal Laboratories for Materials Science and Technology (EMPA), Lerchenfeldstrasse 5, CH-9014, St. Gallen, Switzerland
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14
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Trachsel L, Romio M, Zenobi-Wong M, Benetti EM. Hydrogels Generated from Cyclic Poly(2-Oxazoline)s Display Unique Swelling and Mechanical Properties. Macromol Rapid Commun 2020; 42:e2000658. [PMID: 33326133 DOI: 10.1002/marc.202000658] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/20/2020] [Indexed: 12/14/2022]
Abstract
Cyclic macromolecules do not feature chain ends and are characterized by a higher effective intramolecular repulsion between polymer segments, leading to a higher excluded-volume effect and greater hydration with respect to their linear counterparts. As a result of these unique properties, hydrogels composed of cross-linked cyclic polymers feature enhanced mechanical strength while simultaneously incorporating more solvent with respect to networks formed from their linear analogues with identical molar mass and chemical composition. The translation of topology effects by cyclic polymers into the properties of polymer networks provides hydrogels that ideally do not include defects, such as dangling chain ends, and display unprecedented physicochemical characteristics.
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Affiliation(s)
- Lucca Trachsel
- Tissue Engineering + Biofabrication Laboratory, Department of Health Sciences and Technology, ETH Zürich, Zürich, 8093, Switzerland
| | - Matteo Romio
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, Zürich, 8093, Switzerland.,Biointerfaces, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St., Gallen, Switzerland
| | - Marcy Zenobi-Wong
- Tissue Engineering + Biofabrication Laboratory, Department of Health Sciences and Technology, ETH Zürich, Zürich, 8093, Switzerland
| | - Edmondo M Benetti
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, Zürich, 8093, Switzerland.,Biointerfaces, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St., Gallen, Switzerland
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