51
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Vy NCH, Liyanage CD, Williams RML, Fang JM, Kerns PM, Schniepp HC, Adamson DH. Surface-Initiated Passing-through Zwitterionic Polymer Brushes for Salt-Selective and Antifouling Materials. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01891] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ngoc Chau H. Vy
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136, United States
| | - Chinthani D. Liyanage
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3036, United States
| | - Robert M. L. Williams
- Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut 06269-3136, United States
| | - Justin M. Fang
- Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269-3247, United States
| | - Peter M. Kerns
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3036, United States
| | - Hannes C. Schniepp
- Department of Applied Science, The College of William and Mary, Williamsburg, Virginia 23187-8795, United States
| | - Douglas H. Adamson
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136, United States
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3036, United States
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52
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Kwon T, Chun J. ON/OFF Switchable Nanocomposite Membranes for Separations. Polymers (Basel) 2020; 12:E2415. [PMID: 33092179 PMCID: PMC7589038 DOI: 10.3390/polym12102415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/14/2020] [Accepted: 10/19/2020] [Indexed: 01/21/2023] Open
Abstract
Although water, air, and other resources are abundant on earth, they have been subjected to strict environmental regulations. This is because of their limitation of availability for human consumption. In the separation industry, the membrane system was introduced to increase the amount of resources available to mankind. Experts used an easy-to-use polymeric material to design several membranes with porous structures for wastewater treatment, gas separation, and chemical removal; consequently, they succeeded in obtaining positive results. However, past polymeric membranes exhibited a chronic drawback such that it was difficult to simultaneously augment the permeate flux and improve its selectivity toward certain substances. Because of the trade-off relationship that existed between permeability and selectivity, the membrane efficiency was not very good; consequently, the cost-effectiveness was significantly hindered because there was no other alternative than to replace the membrane in order to maintain its initial characteristics steadily. This review begins with the introduction of a polymer nanocomposite (PNC) membrane that has been designed to solve the chronic problem of polymeric membranes; subsequently, the stimuli-responsive PNC membrane is elucidated, which has established itself as a popular topic among researchers in the separation industry for several decades. Furthermore, we have listed the different types and examples of stimuli-responsive PNC membranes, which can be switched by external stimuli, while discussing the future direction of the membrane separation industry.
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Affiliation(s)
- Taegyun Kwon
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea;
| | - Jinyoung Chun
- Energy & Environment Division, Korea Institute of Ceramic Engineering & Technology (KICET), Gyeongnam 52851, Korea
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53
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Xie Z, Gan T, Fang L, Zhou X. Recent progress in creating complex and multiplexed surface-grafted macromolecular architectures. SOFT MATTER 2020; 16:8736-8759. [PMID: 32969442 DOI: 10.1039/d0sm01043j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Surface-grafted macromolecules, including polymers, DNA, peptides, etc., are versatile modifications to tailor the interfacial functions in a wide range of fields. In this review, we aim to provide an overview of the most recent progress in engineering surface-grafted chains for the creation of complex and multiplexed surface architectures over micro- to macro-scopic areas. A brief introduction to surface grafting is given first. Then the fabrication of complex surface architectures is summarized with a focus on controlled chain conformations, grafting densities and three-dimensional structures. Furthermore, recent advances are highlighted for the generation of multiplexed arrays with designed chemical composition in both horizontal and vertical dimensions. The applications of such complicated macromolecular architectures are then briefly discussed. Finally, some perspective outlooks for future studies and challenges are suggested. We hope that this review will be helpful to those just entering this field and those in the field requiring quick access to useful reference information about the progress in the properties, processing, performance, and applications of functional surface-grafted architectures.
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Affiliation(s)
- Zhuang Xie
- School of Materials Science and Engineering, and Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Xingangxi Road No. 135, Guangzhou, Guangdong Province 510275, P. R. China.
| | - Tiansheng Gan
- College of Chemistry and Environmental Engineering, Shenzhen University, Nanhai Avenue 3688, Shenzhen, Guangdong Province 518055, P. R. China.
| | - Lvye Fang
- School of Materials Science and Engineering, and Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Xingangxi Road No. 135, Guangzhou, Guangdong Province 510275, P. R. China.
| | - Xuechang Zhou
- College of Chemistry and Environmental Engineering, Shenzhen University, Nanhai Avenue 3688, Shenzhen, Guangdong Province 518055, P. R. China.
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Rahim M, Mas Haris MRH, Saqib NU. An overview of polymeric nano-biocomposites as targeted and controlled-release devices. Biophys Rev 2020; 12:1223-1231. [PMID: 32901426 DOI: 10.1007/s12551-020-00750-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 08/28/2020] [Indexed: 02/06/2023] Open
Abstract
In recent years, controlled drug delivery has become an important area of research. Nano-biocomposites can fulfil the necessary requirements of a targeted drug delivery device. This review describes use of polymeric nano-biocomposites in controlled drug delivery devices. Selection of suitable biopolymer and methods of preparation are discussed.
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Affiliation(s)
- Muhammad Rahim
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Pulau Penang, Malaysia.
| | | | - Najm Us Saqib
- Department of Zoology, University of Buner, Buner, KP, Pakistan
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55
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Wu T, Leng X, Wang Y, Wei Z, Li Y. Linear- and star-brush poly(ethylene glycol)s: Synthesis and architecture-dependent crystallization behavior. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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56
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Chu Z, Zhang W, Li D, Zhang L, Zhu M, Ge Z. Synthesis and chromatographic evaluation of poly(pentabromostyrene)-silica composite: A versatile stationary phase for separating both polar and non-polar aromatic compounds. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104838] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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57
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Saito M, Yamada NL, Ito K, Yokoyama H. Interfacial Energy Measurement on the Reconstructive Polymer Surface: Dynamic Polymer Brush by Segregation of Amphiphilic Block Copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:6465-6472. [PMID: 32459495 DOI: 10.1021/acs.langmuir.0c00764] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Herein, the interfacial energy of a reconstructive polymer surface formed by segregation is analyzed by measuring the change in the size of elastomer thin films floating on water. When a system in which amphiphilic diblock copolymers are mixed with the hydrophobic elastomer is in contact with water, surface reconstruction is triggered by the segregation of copolymers with a gain in the hydration energy of the hydrophilic blocks. The hydrophilic brush layer spontaneously formed at the elastomer-water interface is named the dynamic polymer brush. Although it is anticipated that the interfacial energy will significantly decrease in the dynamic polymer brush system, a direct measurement of the interfacial energy of the reconstructive interface is a challenge. We propose a novel method to measure the interfacial energy of a reconstructive polymer surface by measuring the deformation of elastomer thin films floating on water and apply it to the dynamic polymer brush system. The interfacial energy of the dynamic polymer brush formed by the segregation of amphiphilic diblock copolymers with longer hydrophilic chains drastically decreased to zero due to the high hydration energy of hydrophilic chains. Based on the neutron reflectometry results, the graft density and thickness of the dynamic polymer brush system floating on water were found to be lower than those of the system fixed onto solid substrates. This indicates that the floating system can respond to an external environment with a high degree of freedom (graft density, brush thickness, and interface area).
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Affiliation(s)
- Masayuki Saito
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwano-ha, Kashiwa, Chiba 277-8561, Japan
| | - Norifumi L Yamada
- Neutron Science Laboratory, High Energy Accelerator Research Organization, Ibaraki 319-1106, Japan
| | - Kohzo Ito
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwano-ha, Kashiwa, Chiba 277-8561, Japan
| | - Hideaki Yokoyama
- Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwano-ha, Kashiwa, Chiba 277-8561, Japan
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59
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Arraez FJ, Van Steenberge PHM, D’hooge DR. Conformational Distributions near and on the Substrate during Surface-Initiated Living Polymerization: A Lattice-Based Kinetic Monte Carlo Approach. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00585] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Francisco J. Arraez
- Laboratory for Chemical Technology, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 125, Zwijnaarde, Ghent 9052, Belgium
| | - Paul H. M. Van Steenberge
- Laboratory for Chemical Technology, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 125, Zwijnaarde, Ghent 9052, Belgium
| | - Dagmar R. D’hooge
- Laboratory for Chemical Technology, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 125, Zwijnaarde, Ghent 9052, Belgium
- Centre for Textile Science and Engineering, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 70A, Zwijnaarde, Ghent 9052, Belgium
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60
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Precise construction of polymer brush on a nanosilica surface via the combination of anionic polymerization and Ugi-4CR. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122533] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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61
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Hou W, Liu Y, Zhao H. Surface Nanostructures Based on Assemblies of Polymer Brushes. Chempluschem 2020; 85:998-1007. [DOI: 10.1002/cplu.202000112] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/20/2020] [Indexed: 01/03/2023]
Affiliation(s)
- Wangmeng Hou
- Key Laboratory of Functional Polymer Materials Ministry of Education College of ChemistryNankai University Tianjin 300071 P. R. China
| | - Yingze Liu
- Key Laboratory of Functional Polymer Materials Ministry of Education College of ChemistryNankai University Tianjin 300071 P. R. China
| | - Hanying Zhao
- Key Laboratory of Functional Polymer Materials Ministry of Education College of ChemistryNankai University Tianjin 300071 P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300071 P. R. China
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Krywko-Cendrowska A, di Leone S, Bina M, Yorulmaz-Avsar S, Palivan CG, Meier W. Recent Advances in Hybrid Biomimetic Polymer-Based Films: from Assembly to Applications. Polymers (Basel) 2020; 12:E1003. [PMID: 32357541 PMCID: PMC7285097 DOI: 10.3390/polym12051003] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 04/15/2020] [Accepted: 04/16/2020] [Indexed: 12/21/2022] Open
Abstract
Biological membranes, in addition to being a cell boundary, can host a variety of proteins that are involved in different biological functions, including selective nutrient transport, signal transduction, inter- and intra-cellular communication, and cell-cell recognition. Due to their extreme complexity, there has been an increasing interest in developing model membrane systems of controlled properties based on combinations of polymers and different biomacromolecules, i.e., polymer-based hybrid films. In this review, we have highlighted recent advances in the development and applications of hybrid biomimetic planar systems based on different polymeric species. We have focused in particular on hybrid films based on (i) polyelectrolytes, (ii) polymer brushes, as well as (iii) tethers and cushions formed from synthetic polymers, and (iv) block copolymers and their combinations with biomacromolecules, such as lipids, proteins, enzymes, biopolymers, and chosen nanoparticles. In this respect, multiple approaches to the synthesis, characterization, and processing of such hybrid films have been presented. The review has further exemplified their bioengineering, biomedical, and environmental applications, in dependence on the composition and properties of the respective hybrids. We believed that this comprehensive review would be of interest to both the specialists in the field of biomimicry as well as persons entering the field.
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Affiliation(s)
| | | | | | | | - Cornelia G. Palivan
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, Switzerland; (A.K.-C.); (S.d.L.); (M.B.); (S.Y.-A.)
| | - Wolfgang Meier
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, Switzerland; (A.K.-C.); (S.d.L.); (M.B.); (S.Y.-A.)
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63
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Functionalization of carbon nanotubes by combination of controlled radical polymerization and "grafting to" method. Adv Colloid Interface Sci 2020; 278:102126. [PMID: 32114292 DOI: 10.1016/j.cis.2020.102126] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/13/2020] [Accepted: 02/21/2020] [Indexed: 12/25/2022]
Abstract
This paper reviews the recent advances in non-covalent and covalent tethering of small molecules and polymer chains onto carbon nanotube (CNT) and its derivatives. The functionalized CNT has recently attracted great attention because of an increasing number of its potential applications. In non-covalent functionalization of CNT, the sp2-hybridized network plays a crucial role. The non-covalent grafting of small molecules and polymers can mainly be carried out through hydrogen bonding and π-stacking interactions. In covalent functionalization of CNT, condensation, cycloaddition, and addition reactions play a key role. Polymer modification has been reported by using three main methods of "grafting from", "grafting through", and also "grafting to". The "grafting from" and "grafting through" rely on propagation of polymer chains in the presence of CNT modified with initiator and double bond moieties, respectively. In "grafting to" method, which is the main aim of this review, the pre-fabricated polymer chains are mainly grafted onto the surface using coupling reactions. The coupling reactions are used for grafting pre-fabricated polymer chains and also small molecules onto CNT. Recent studies on grafting polymer chains onto CNT via "grafting to" method have focused on the pre-fabricated polymer chains by conventional and controlled radical polymerization (CRP) methods. CRP includes reversible activation, atom transfer, degenerative (exchange) chain transfer, and reversible chain transfer mechanisms, and could result in polymer-grafted CNT with narrow polydispersity index of the grafted polymer chains. Based on the mentioned mechanisms, nitroxide-mediated polymerization, atom transfer radical polymerization, and reversible addition-fragmentation chain transfer are known as the three commonly used CRP methods. Such polymer-modified CNT has lots of applications in batteries, biomedical fields, sensors, filtration, solar cells, etc.
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64
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Maity N, Dawn A. Conducting Polymer Grafting: Recent and Key Developments. Polymers (Basel) 2020; 12:E709. [PMID: 32210062 PMCID: PMC7182814 DOI: 10.3390/polym12030709] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/17/2020] [Accepted: 03/20/2020] [Indexed: 12/13/2022] Open
Abstract
Since the discovery of conductive polyacetylene, conductive electroactive polymers are at the focal point of technology generation and biocommunication materials. The reasons why this research never stops growing, are twofold: first, the demands from the advanced technology towards more sophistication, precision, durability, processability and cost-effectiveness; and second, the shaping of conducting polymer research in accordance with the above demand. One of the major challenges in conducting polymer research is addressing the processability issue without sacrificing the electroactive properties. Therefore, new synthetic designs and use of post-modification techniques become crucial than ever. This quest is not only advancing the field but also giving birth of new hybrid materials integrating merits of multiple functional motifs. The present review article is an attempt to discuss the recent progress in conducting polymer grafting, which is not entirely new, but relatively lesser developed area for this class of polymers to fine-tune their physicochemical properties. Apart from conventional covalent grafting techniques, non-covalent approach, which is relatively new but has worth creation potential, will also be discussed. The aim is to bring together novel molecular designs and strategies to stimulate the existing conducting polymer synthesis methodologies in order to enrich its fascinating chemistry dedicated toward real-life applications.
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Affiliation(s)
- Nabasmita Maity
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel;
| | - Arnab Dawn
- James Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45267-514, USA
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65
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Flemming P, Müller M, Fery A, Münch AS, Uhlmann P. Mechanistic Investigation of the Counterion-Induced UCST Behavior of Poly(N,N-dimethylaminoethyl methacrylate) Polymer Brushes. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02666] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Patricia Flemming
- Leibniz-Institut für Polymerforschung Dresden e.V, Hohe Straße 6, 01069 Dresden, Germany
- Technische Universität Dresden, 01062 Dresden, Germany
| | - Martin Müller
- Leibniz-Institut für Polymerforschung Dresden e.V, Hohe Straße 6, 01069 Dresden, Germany
- Technische Universität Dresden, 01062 Dresden, Germany
| | - Andreas Fery
- Leibniz-Institut für Polymerforschung Dresden e.V, Hohe Straße 6, 01069 Dresden, Germany
- Technische Universität Dresden, 01062 Dresden, Germany
| | - Alexander S. Münch
- Leibniz-Institut für Polymerforschung Dresden e.V, Hohe Straße 6, 01069 Dresden, Germany
| | - Petra Uhlmann
- Leibniz-Institut für Polymerforschung Dresden e.V, Hohe Straße 6, 01069 Dresden, Germany
- University of Nebraska-Lincoln, 68588 Lincoln, Nebraska, United States
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66
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Sun W, Liu W, Wu Z, Chen H. Chemical Surface Modification of Polymeric Biomaterials for Biomedical Applications. Macromol Rapid Commun 2020; 41:e1900430. [DOI: 10.1002/marc.201900430] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 02/08/2020] [Accepted: 02/16/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Wei Sun
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
| | - Wenying Liu
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
| | - Zhaoqiang Wu
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
| | - Hong Chen
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
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67
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Witte J, Krause P, Kyrey T, Dahl AM, Lutzki J, Schmidt BVKJ, Ganeva M, Koutsioubas A, Holderer O, Wellert S. Grazing Incidence Neutron Spin Echo Study of Poly(N-isopropylacrylamide) Brushes. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b01247] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Judith Witte
- Technische Universität Berlin, Department of Chemistry, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Patrick Krause
- Technische Universität Berlin, Department of Chemistry, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Tetyana Kyrey
- Technische Universität Berlin, Department of Chemistry, Straße des 17. Juni 135, 10623 Berlin, Germany
- JCNS at Heinz Maier-Leibnitz Zentrum, 85747 Garching, Germany
| | - Anna Margarethe Dahl
- Technische Universität Berlin, Department of Chemistry, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Jana Lutzki
- Technische Universität Berlin, Department of Chemistry, Straße des 17. Juni 135, 10623 Berlin, Germany
| | | | - Marina Ganeva
- JCNS at Heinz Maier-Leibnitz Zentrum, 85747 Garching, Germany
| | | | - Olaf Holderer
- JCNS at Heinz Maier-Leibnitz Zentrum, 85747 Garching, Germany
| | - Stefan Wellert
- Technische Universität Berlin, Department of Chemistry, Straße des 17. Juni 135, 10623 Berlin, Germany
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Pattison TG, Spanu A, Friz AM, Fu Q, Miller RD, Qiao GG. Growing Patterned, Cross-linked Nanoscale Polymer Films from Organic and Inorganic Surfaces Using Ring-Opening Metathesis Polymerization. ACS APPLIED MATERIALS & INTERFACES 2020; 12:4041-4051. [PMID: 31741381 DOI: 10.1021/acsami.9b15852] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The ability to modify substrates with thin polymer films allows for the tailoring of surface properties, and through combination of patterning finds use in a large variety of applications such as electronics and lab-on-chip devices. Although many techniques can be used to afford polymer-modified surfaces such as surface-initiated polymerization or layer-by-layer methodologies, their stability in a wide range of environments as well as their ability to target specific chemistry are critical factors to enable their successful application. In this paper, we report a facile technique in creating nanoscale polymer thin films using solid-state continuous assembly of polymers via ring-opening metathesis polymerization (ssCAPROMP) directly from surfaces functionalized through silanization. Using a polymeric precursor that includes norbornene moieties, a highly dense cross-linked network of polymer can be grown in a bottom-up fashion to afford thin films from an olefin-terminated silanized planar surface. Such nanotechnology affords films retaining the desirable qualities of previously reported methods while, at the same time, being covalently bound to the substrate: they are virtually pinhole free and can be reinitiated multiple times. By combining this process with microcontact printing, patterned films can be created by either the patterned deposition of a catalyst or by controlling the surface silanization chemistry and placement of olefin-terminated and nonreactive silanes. Additionally, patterned ssCAPROMP films were grown from SU-8 by selectively functionalizing the surface through masking and lift-off processes after the silanization step, thereby spatially controlling the surface-initiation, and subsequent polymer film formation. These patterned films expand the capabilities of the CAPROMP process and offer advantages over other film formation techniques in processes where patterned substrates and modified but robust surface chemistries are utilized.
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Affiliation(s)
- Thomas G Pattison
- Polymer Science Group, Department of Chemical Engineering , The University of Melbourne , Parkville , Victoria 3010 , Australia
- International Business Machines-Almaden Research Center , 650 Harry Road , San Jose , California 95110 , United States
| | - Andrea Spanu
- Department of Electrical and Electronic Engineering , University of Cagliari , via Marengo , 09123 Cagliari , Italy
| | - Alexander M Friz
- International Business Machines-Almaden Research Center , 650 Harry Road , San Jose , California 95110 , United States
| | - Qiang Fu
- Polymer Science Group, Department of Chemical Engineering , The University of Melbourne , Parkville , Victoria 3010 , Australia
- The Centre for Technology in Water and Wastewater (CTWW), School of Civil and Environmental Engineering , University of Technology Sydney , Ultimo , NSW 2007 Australia
| | - Robert D Miller
- International Business Machines-Almaden Research Center , 650 Harry Road , San Jose , California 95110 , United States
| | - Greg G Qiao
- Polymer Science Group, Department of Chemical Engineering , The University of Melbourne , Parkville , Victoria 3010 , Australia
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69
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Brittain WJ, Brandsetter T, Prucker O, Rühe J. The Surface Science of Microarray Generation-A Critical Inventory. ACS APPLIED MATERIALS & INTERFACES 2019; 11:39397-39409. [PMID: 31322854 DOI: 10.1021/acsami.9b06838] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Microarrays are powerful tools in biomedical research and have become indispensable for high-throughput multiplex analysis, especially for DNA and protein analysis. The basis for all microarray processing and fabrication is surface modification of a chip substrate and many different strategies to couple probe molecules to such substrates have been developed. We present here a critical assessment of typical biochip generation processes from a surface science point of view. While great progress has been made from a molecular biology point of view on the development of qualitative assays and impressive results have been obtained on the detection of rather low concentrations of DNA or proteins, quantitative chip-based assays are still comparably rare. We argue that lack of stable and reliable deposition chemistries has led in many cases to suboptimal quantitative reproducibility, impeded further progress in microarray development and prevented a more significant penetration of microarray technology into the diagnostic market. We suggest that surface-attached hydrogel networks might be a promising strategy to achieve highly sensitive and quantitatively reproducible microarrays.
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Affiliation(s)
- William J Brittain
- Department of Chemistry & Biochemistry , Texas State University , 601 University Drive , San Marcos , Texas 78666 , United States
- Department of Microsystems Engineering , University of Freiburg , Georges-Köhler-Allee 103 , Freiburg 79110 , Germany
| | - Thomas Brandsetter
- Department of Microsystems Engineering , University of Freiburg , Georges-Köhler-Allee 103 , Freiburg 79110 , Germany
| | - Oswald Prucker
- Department of Microsystems Engineering , University of Freiburg , Georges-Köhler-Allee 103 , Freiburg 79110 , Germany
| | - Jürgen Rühe
- Department of Microsystems Engineering , University of Freiburg , Georges-Köhler-Allee 103 , Freiburg 79110 , Germany
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Yan W, Ramakrishna SN, Romio M, Benetti EM. Bioinert and Lubricious Surfaces by Macromolecular Design. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13521-13535. [PMID: 31532689 DOI: 10.1021/acs.langmuir.9b02316] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The modification of a variety of biomaterials and medical devices often encompasses the generation of biopassive and lubricious layers on their exposed surfaces. This is valid when the synthetic supports are required to integrate within physiological media without altering their interfacial composition and when the minimization of shear stress prevents or reduces damage to the surrounding environment. In many of these cases, hydrophilic polymer brushes assembled from surface-interacting polymer adsorbates or directly grown by surface-initiated polymerizations (SIP) are chosen. Although growing efforts by polymer chemists have been focusing on varying the composition of polymer brushes in order to attain increasingly bioinert and lubricious surfaces, the precise modulation of polymer architecture has simultaneously enabled us to substantially broaden the tuning potential for the above-mentioned properties. This feature article concentrates on reviewing this latter strategy, comparatively analyzing how polymer brush parameters such as molecular weight and grafting density, the application of block copolymers, the introduction of branching and cross-links, or the variation of polymer topology beyond the simple, linear chains determine highly technologically relevant properties, such as biopassivity and lubrication.
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Affiliation(s)
- Wenqing Yan
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials , Swiss Federal Institute of Technology (ETH Zürich) , Vladimir-Prelog-Weg 1-5/10 , CH-8093 Zurich , Switzerland
| | - Shivaprakash N Ramakrishna
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials , Swiss Federal Institute of Technology (ETH Zürich) , Vladimir-Prelog-Weg 1-5/10 , CH-8093 Zurich , Switzerland
| | - Matteo Romio
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials , Swiss Federal Institute of Technology (ETH Zürich) , Vladimir-Prelog-Weg 1-5/10 , CH-8093 Zurich , Switzerland
- Biointerfaces, Swiss Federal Laboratories for Materials Science and Technology (Empa) , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
| | - Edmondo M Benetti
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials , Swiss Federal Institute of Technology (ETH Zürich) , Vladimir-Prelog-Weg 1-5/10 , CH-8093 Zurich , Switzerland
- Biointerfaces, Swiss Federal Laboratories for Materials Science and Technology (Empa) , Lerchenfeldstrasse 5 , CH-9014 St. Gallen , Switzerland
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71
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Cirelli M, Hao J, Bor TC, Duvigneau J, Benson N, Akkerman R, Hempenius MA, Vancso GJ. Printing "Smart" Inks of Redox-Responsive Organometallic Polymers on Microelectrode Arrays for Molecular Sensing. ACS APPLIED MATERIALS & INTERFACES 2019; 11:37060-37068. [PMID: 31525020 PMCID: PMC6790938 DOI: 10.1021/acsami.9b11927] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 09/16/2019] [Indexed: 06/10/2023]
Abstract
Printing arrays of responsive spots for multiplexed sensing with electrochemical readout requires new molecules and precise, high-throughput deposition of active compounds on microelectrodes with spatial control. We have designed and developed new redox-responsive polymers, featuring a poly(ferrocenylsilane) (PFS) backbone and side groups with disulfide units, which allow an efficient and stable bonding to Au substrates, using sulfur-gold coupling chemistry in a "grafting-to" approach. The polymer molecules can be employed for area selective molecular sensing following their deposition by high-precision inkjet printing. The new PFS derivatives, which serve as "molecular inks", were characterized by 1H NMR, 13C NMR, and FTIR spectroscopies and by gel permeation chromatography. The viscosity and surface tension of the inks were assessed by rheology and pendant drop contact angle measurements, respectively. Commercial microelectrode arrays were modified with the new PFS ink by using inkjet printing in the "drop-on-demand" mode. FTIR spectroscopy, AFM, and EDX-SEM confirmed a successful, spatially localized PFS modification of the individual electrodes within the sensing cells of the microelectrode arrays. The potential application of these devices to act as an electrochemical sensor array was demonstrated with a model analyte, ascorbic acid, by using cyclic voltammetry and amperometric measurements.
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Affiliation(s)
- Marco Cirelli
- Materials
Science and Technology of Polymers, MESA+ Institute for
Nanotechnology, and Production Technology, Faculty of Engineering Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Jinmeng Hao
- Materials
Science and Technology of Polymers, MESA+ Institute for
Nanotechnology, and Production Technology, Faculty of Engineering Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Teunis C. Bor
- Materials
Science and Technology of Polymers, MESA+ Institute for
Nanotechnology, and Production Technology, Faculty of Engineering Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Joost Duvigneau
- Materials
Science and Technology of Polymers, MESA+ Institute for
Nanotechnology, and Production Technology, Faculty of Engineering Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Niels Benson
- Institute
of Technology for Nanostructures, Faculty of Engineering, University of Duisburg-Essen (UDE), Bismarckstr. 81, D-47057 Duisburg, Germany
| | - Remko Akkerman
- Materials
Science and Technology of Polymers, MESA+ Institute for
Nanotechnology, and Production Technology, Faculty of Engineering Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Mark A. Hempenius
- Materials
Science and Technology of Polymers, MESA+ Institute for
Nanotechnology, and Production Technology, Faculty of Engineering Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - G. Julius Vancso
- Materials
Science and Technology of Polymers, MESA+ Institute for
Nanotechnology, and Production Technology, Faculty of Engineering Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
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72
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Irzhak VI, Dzhardimalieva GI, Uflyand IE. Structure and properties of epoxy polymer nanocomposites reinforced with carbon nanotubes. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1896-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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73
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El-Maksoud AAA, Anankanbil S, Zhou Y, El-Ghany IHA, El-Beltagi HS, Banerjee C, Petersen SV, Guo Z. Grafting phenolics onto milk protein via conjugated polymerization for delivery of multiple functionalities: Synthesis and characterization. Food Chem 2019; 301:125298. [PMID: 31387044 DOI: 10.1016/j.foodchem.2019.125298] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 07/26/2019] [Accepted: 07/29/2019] [Indexed: 12/23/2022]
Abstract
A synthetic scenario for functionalization of β-lactoglobulin (βLg) with polymeric units containing caffeic acid (βLg-polyCA) was developed; and all intermediates and final products were structurally confirmed using nuclear magnetic resonance spectroscopy, matrix assisted laser desorption ionization time-of-flight mass spectrometry, and physico-chemically characterized using differential scanning calorimetry and circular dichroism. The antioxidant properties and emulsion stability of βLg, βLg-CA conjugate and βLg-polyCA based systems containing high percentage of fish oil (50%) were evaluated; and βLg-polyCA presented the highest antioxidant and free radical-scavenging activity based on DPPH, ABTS and HS scavenging assays (92.4, 87.92 and 67.35% respectively). Thiobarbituric acid (TBARS) test demonstrated that compared to native βLg, βLg-polyCA afford up 4-5 fold of inhibition of oxidative rancidity and displayed drastic secondary structure changes. Compared to native βLg based emulsions, βLg-polyCA had larger oil droplet sizes, stronger negative zeta potentials (-69.9 mv), narrower size distributions (PDI: 0.22) and less creaming index.
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Affiliation(s)
- Ahmed A Abd El-Maksoud
- Department of Dairy Science, Faculty of Agriculture, Cairo University, Giza 12613, Egypt; Department of Engineering, Aarhus University, Gustav Wieds vej 10, Aarhus 8000, Denmark.
| | - Sampson Anankanbil
- Department of Engineering, Aarhus University, Gustav Wieds vej 10, Aarhus 8000, Denmark.
| | - Ye Zhou
- Department of Engineering, Aarhus University, Gustav Wieds vej 10, Aarhus 8000, Denmark.
| | - Ismail H Abd El-Ghany
- Department of Dairy Science, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - Hossam S El-Beltagi
- Agricultural Biotechnology Department, College of Agriculture and Food Sciences, King Faisal University, Alhassa 31982, Saudi Arabia; Biochemistry Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt.
| | - Chiranjib Banerjee
- Department of Chemistry, Aarhus University, Gustav Wieds vej 14, Aarhus 8000, Denmark.
| | - Steen V Petersen
- Department of Biomedicine, Aarhus University, Wilhelm Meyers Allé 4, Aarhus 8000, Denmark.
| | - Zheng Guo
- Department of Engineering, Aarhus University, Gustav Wieds vej 10, Aarhus 8000, Denmark.
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74
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Michalek L, Mundsinger K, Barner L, Barner-Kowollik C. Quantifying Solvent Effects on Polymer Surface Grafting. ACS Macro Lett 2019; 8:800-805. [PMID: 35619509 DOI: 10.1021/acsmacrolett.9b00336] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
When grafting polymers onto surfaces, the reaction conditions critically influence the resulting interface properties, including the grafting density and molar mass distribution (MMD) on the surface. Herein, we show theoretically and experimentally that the application of poor solvents is beneficial for the "grafting-to" approach. We demonstrate the effect by grafting poly(methyl methacrylate) chains on silica nanoparticles in different solvents and compare the MMD of the polymer in solution before and after grafting via size exclusion chromatography (SEC). The shorter polymer chains are preferentially grafted onto the surface, leading to a distortion effect between the MMD in solution and on surfaces. The molecular weight distortion effect is significantly higher for ethyl acetate (good solvent quality, difference in Mw surface to solution 14%) than for N,N-dimethylacetamide (poor solvent quality, 6%). The difference in MMD on the surface to the solution significantly affects both the surface properties (e.g. the grafting densities) and their determination.
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Affiliation(s)
- Lukas Michalek
- School of Chemistry, Physics and Mechanical Engineering, Institute for Future Environments, Queensland University of Technology (QUT), 2 George Street, QLD 4000, Brisbane, Australia
| | - Kai Mundsinger
- School of Chemistry, Physics and Mechanical Engineering, Institute for Future Environments, Queensland University of Technology (QUT), 2 George Street, QLD 4000, Brisbane, Australia
| | - Leonie Barner
- School of Chemistry, Physics and Mechanical Engineering, Institute for Future Environments, Queensland University of Technology (QUT), 2 George Street, QLD 4000, Brisbane, Australia
- Institut für Biologische Grenzflächen (IBG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Christopher Barner-Kowollik
- School of Chemistry, Physics and Mechanical Engineering, Institute for Future Environments, Queensland University of Technology (QUT), 2 George Street, QLD 4000, Brisbane, Australia
- Macromolecular Architectures, Institut für Technische Chemie und Polymerchemie (ITCP), Karlsruhe Institute of Technology (KIT), Engesserstrasse 18, 76128 Karlsruhe, Germany
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75
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Voerman D, Schluck M, Weiden J, Joosten B, Eggermont LJ, van den Eijnde T, Ignacio B, Cambi A, Figdor CG, Kouwer PHJ, Verdoes M, Hammink R, Rowan AE. Synthetic Semiflexible and Bioactive Brushes. Biomacromolecules 2019; 20:2587-2597. [PMID: 31150222 PMCID: PMC6620732 DOI: 10.1021/acs.biomac.9b00385] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 05/29/2019] [Indexed: 11/29/2022]
Abstract
Polymer brushes are extensively used for the preparation of bioactive surfaces. They form a platform to attach functional (bio)molecules and control the physicochemical properties of the surface. These brushes are nearly exclusively prepared from flexible polymers, even though much stiffer brushes from semiflexible polymers are frequently found in nature, which exert bioactive functions that are out of reach for flexible brushes. Synthetic semiflexible polymers, however, are very rare. Here, we use polyisocyanopeptides (PICs) to prepare high-density semiflexible brushes on different substrate geometries. For bioconjugation, we developed routes with two orthogonal click reactions, based on the strain-promoted azide-alkyne cycloaddition reaction and the (photoactivated) tetrazole-ene cycloaddition reaction. We found that for high brush densities, multiple bonds between the polymer and the substrate are necessary, which was achieved in a block copolymer strategy. Whether the desired biomolecules are conjugated to the PIC polymer before or after brush formation depends on the dimensions and required densities of the biomolecules and the curvature of the substrate. In either case, we provide mild, aqueous, and highly modular reaction strategies, which make PICs a versatile addition to the toolbox for generating semiflexible bioactive polymer brush surfaces.
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Affiliation(s)
- Dion Voerman
- Department
of Tumor Immunology, Department of Cell Biology, and Microscopic Imaging Center, Radboud Institute for Molecular Life Sciences, Radboud
University Medical Center, Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
| | - Marjolein Schluck
- Department
of Tumor Immunology, Department of Cell Biology, and Microscopic Imaging Center, Radboud Institute for Molecular Life Sciences, Radboud
University Medical Center, Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
| | - Jorieke Weiden
- Department
of Tumor Immunology, Department of Cell Biology, and Microscopic Imaging Center, Radboud Institute for Molecular Life Sciences, Radboud
University Medical Center, Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
| | - Ben Joosten
- Department
of Tumor Immunology, Department of Cell Biology, and Microscopic Imaging Center, Radboud Institute for Molecular Life Sciences, Radboud
University Medical Center, Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
| | - Loek J. Eggermont
- Department
of Tumor Immunology, Department of Cell Biology, and Microscopic Imaging Center, Radboud Institute for Molecular Life Sciences, Radboud
University Medical Center, Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
| | - Tuur van den Eijnde
- Department
of Molecular Materials, Institute for Molecules
and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Bob Ignacio
- Department
of Molecular Materials, Institute for Molecules
and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Alessandra Cambi
- Department
of Tumor Immunology, Department of Cell Biology, and Microscopic Imaging Center, Radboud Institute for Molecular Life Sciences, Radboud
University Medical Center, Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
| | - Carl G. Figdor
- Department
of Tumor Immunology, Department of Cell Biology, and Microscopic Imaging Center, Radboud Institute for Molecular Life Sciences, Radboud
University Medical Center, Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
| | - Paul H. J. Kouwer
- Department
of Molecular Materials, Institute for Molecules
and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Martijn Verdoes
- Department
of Tumor Immunology, Department of Cell Biology, and Microscopic Imaging Center, Radboud Institute for Molecular Life Sciences, Radboud
University Medical Center, Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
| | - Roel Hammink
- Department
of Tumor Immunology, Department of Cell Biology, and Microscopic Imaging Center, Radboud Institute for Molecular Life Sciences, Radboud
University Medical Center, Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
| | - Alan E. Rowan
- Department
of Molecular Materials, Institute for Molecules
and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
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76
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Gong K, Pan C, He K, Zhu H, Chen L, Hou M, Wang Y. Influence of poly(acrylic acid) grafting density on switchable protein adsorption/desorption of poly(2‐methyl‐2‐oxazoline)/poly(acrylic acid) mixed brushes. J Appl Polym Sci 2019. [DOI: 10.1002/app.48135] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Kai Gong
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and EngineeringUniversity of Science and Technology of China Hefei 230026 People's Republic of China
| | - Chao Pan
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and EngineeringUniversity of Science and Technology of China Hefei 230026 People's Republic of China
| | - Kang He
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and EngineeringUniversity of Science and Technology of China Hefei 230026 People's Republic of China
| | - Haikun Zhu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and EngineeringUniversity of Science and Technology of China Hefei 230026 People's Republic of China
| | - Lijuan Chen
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and EngineeringUniversity of Science and Technology of China Hefei 230026 People's Republic of China
- Colllege of Materials and Chemical EngineeringWest Anhui University Luan 237012 People's Republic of China
| | - Mingxin Hou
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and EngineeringUniversity of Science and Technology of China Hefei 230026 People's Republic of China
| | - Yanmei Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and EngineeringUniversity of Science and Technology of China Hefei 230026 People's Republic of China
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77
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Reimhult E, Schroffenegger M, Lassenberger A. Design Principles for Thermoresponsive Core-Shell Nanoparticles: Controlling Thermal Transitions by Brush Morphology. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:7092-7104. [PMID: 31035760 PMCID: PMC6551573 DOI: 10.1021/acs.langmuir.9b00665] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/17/2019] [Indexed: 05/15/2023]
Abstract
In this feature article, we summarize our recent work on understanding and controlling the thermal behavior of nanoparticles grafted with thermoresponsive polymer shells. Precision synthesis of monodisperse superparamagnetic iron oxide nanocrystals was combined with irreversible dense grafting of nitrodopamide-anchored thermoresponsive polymer chains. We provide an overview of how the dense and stable grafting of biomedically relevant polymers, including poly(ethylene glycol), poly( N-isopropylacrylamide), polysarcosin, and polyoxazolines, can be achieved. This platform has made it possible for us to demonstrate that the polymer brush geometry, as defined by the nanoparticle core and relative polymer brush size, determines the thermal transitions of the polymer brush. We furthermore summarize our work on how the polymer shell transitions and nanoparticle aggregation can be tuned. With the independent variation of the core and the shell, we can optimize and precisely control the thermally controlled solubility of our system. Finally, our feature article gives examples relevant to current and future applications. We show how the thermal response of the shell influences the nanoparticle performance in biological fluids and interactions with proteins and cells, also under purely magnetic actuation of the nanoparticles through the superparamagnetic iron oxide core.
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Affiliation(s)
- Erik Reimhult
- Institute
for Biologically Inspired Materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Muthgasse 11, 1190 Vienna, Austria
| | - Martina Schroffenegger
- Institute
for Biologically Inspired Materials, Department of Nanobiotechnology, University of Natural Resources and Life Sciences, Muthgasse 11, 1190 Vienna, Austria
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78
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Hatakeyama M, Ryuno D, Yokota S, Ichinose H, Kitaoka T. One-step synthesis of cellooligomer-conjugated gold nanoparticles in a water-in-oil emulsion system and their application in biological sensing. Colloids Surf B Biointerfaces 2019; 178:74-79. [PMID: 30840926 DOI: 10.1016/j.colsurfb.2019.02.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 02/01/2019] [Accepted: 02/26/2019] [Indexed: 11/18/2022]
Abstract
Monodisperse gold nanoparticles (GNPs) were synthesized in a water-in-oil emulsion system (reverse micelles) composed of 80% N-methylmorpholine N-oxide (NMMO)/20% H2O and dodecane, stabilized with an anionic surfactant: bis(2-ethylhexyl)sulfosuccinate sodium salt. Cellooligomers with a degree of polymerization of 6 or 15 (βGlc6 or βGlc15, respectively), which were labeled at each reducing end group with thiosemicarbazide (TSC) and dissolved in the aqueous NMMO phase, were successfully conjugated to the surfaces of GNPs in situ during spontaneous NMMO-mediated gold reduction. As-synthesized βGlc6-GNPs and βGlc15-GNPs had average diameters of 11.3 ± 2.1 and 10.5 ± 0.7 nm, respectively, while their surface sugar densities were 0.21 and 0.51 chains nm-2, respectively. Concanavalin A (ConA), a lectin that recognizes non-reducing end groups of glucose residues, aggregated with βGlc15-GNPs with higher sensitivity than it did with βGlc6-GNPs, possibly as a result of the sugar density on the GNP surfaces. The aggregates were rapidly re-suspended by adding methyl-β-d-glucopyranoside as a binding inhibitor. Other lectins and proteins showed no interaction with βGlc-GNPs. Therefore, clustering of glucose non-reducing ends on the GNP surfaces via strong intermolecular association of cellooligomers, possibly led to high affinity for ConA. This facile synthesis route to structural carbohydrate-decorated GNPs has potential applications in carbohydrate-nanometal conjugate nano-biosensor development.
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Affiliation(s)
- Mayumi Hatakeyama
- Department of Agro-Environmental Sciences, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Daisuke Ryuno
- Department of Agro-Environmental Sciences, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Shingo Yokota
- Department of Agro-Environmental Sciences, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Hirofumi Ichinose
- Department of Agro-Environmental Sciences, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Takuya Kitaoka
- Department of Agro-Environmental Sciences, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
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79
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Fahimirad S, Ajalloueian F. Naturally-derived electrospun wound dressings for target delivery of bio-active agents. Int J Pharm 2019; 566:307-328. [PMID: 31125714 DOI: 10.1016/j.ijpharm.2019.05.053] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 05/18/2019] [Accepted: 05/20/2019] [Indexed: 12/30/2022]
Abstract
Electrospun nanofibers are known as the advanced means for wound dressing. They have represented remarkable potency to encapsulate and deliver biomolecules promoting the wound healing process. Compared to synthetic polymers, naturally derived polymers (NDP) are more qualified candidates for fabrication of biomedical electrospun scaffolds. Not only nanofibers of NDP illustrate higher biocompatibility and biodegradability rates, but also they mimic the native extracellular matrix more closely, which leads to the wound closure acceleration by enhancing tissue regeneration. Aside, incorporation of bioactive molecules and therapeutic agents into the nanofibers can generate innovative bioactive wound dressings with significantly improved healing potentials. This paper starts with a brief discussion on the steps and factors influencing the wound healing process. Then, the recent applications of electrospun nanofibers as wound dressing with healing accelerating properties are reviewed. Further, the various healing agents and alternative strategies for modification and functionalization of bioactive naturally-derived electrospun nanofibers are discussed.
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Affiliation(s)
- Shohreh Fahimirad
- Agriculture and Natural Resources Biotechnology Department, University of Tehran, Karaj 31587-11167, Iran.
| | - Fatemeh Ajalloueian
- Department of Health Technology, Technical University of Denmark, Ørsteds Plads 345C, Kgs. Lyngby 2800, Denmark
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80
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Lamping S, Buten C, Ravoo BJ. Functionalization and Patterning of Self-Assembled Monolayers and Polymer Brushes Using Microcontact Chemistry. Acc Chem Res 2019; 52:1336-1346. [PMID: 30969751 DOI: 10.1021/acs.accounts.9b00041] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Because the surface connects a material to its environment, the functionalization, modification, and patterning of surfaces is key to a wide range of materials applied in microelectronics, displays, sensing, microarrays, photovoltaics, catalysis, and other fields. Self-assembled monolayers (SAMs), which can be deposited on a wide range of inorganic materials, are only a few nanometers thick, yet they can radically change the properties of the resulting interface. Alternatively, thin polymer films composed of polymer brushes grown from the surface provide a more robust molecular modification of inorganic materials. For many applications, patterned SAMs or polymer brushes are desired. Over the past decade, our group has shown that both SAMs as well as polymer brushes can be patterned very efficiently using microcontact printing. In microcontact printing, a molecular "ink" is deposited on a suitable substrate using a microstructured elastomer stamp, which delivers the ink exclusively in the area of contact between stamp and substrate. In contrast to most types of lithography, microcontact printing does not require expensive equipment. Our work has shown that "microcontact chemistry" is a powerful additive surface patterning method, in which molecular inks react with a precursor SAM during printing so that surfaces can be modified with various orthogonal functional groups or molecular recognition sites in microscale patterns. Functional groups include reactive groups for click chemistry or photochemistry and initiators for radical polymerization. Molecular recognition sites include host-guest chemistry as well as biochemical ligands such as carbohydrates and biotin. In this Account, we present an overview of our research in this area including selected examples of work by other groups. In the first part, we review our work on the patterning of SAMs using microcontact chemistry, with a focus on click chemistry and photochemistry. We will show how cycloadditions, thiol-ene reactions, and tetrazole chemistry can be used to obtain versatile surface patterns. In the second part, we demonstrate that microcontact chemistry can be used to pattern polymer brushes. Among others, initiators for surface-induced nitroxide-mediated polymerization and atom transfer polymerization were printed and used to grow patterned polymer brushes with molecular recognition groups suitable for responsive surface adhesion. In the third part, we describe how SAMs and polymer brushes can be printed on microparticles instead of flat substrates so that Janus particles with functional patches can be obtained. Finally, we present a brief outlook on further developments expected in this field.
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Affiliation(s)
- Sebastian Lamping
- Center for Soft Nanoscience and Organic Chemistry Institute, Westfälische Wilhelms-Universität Münster, Busso-Peus-Strasse 10, 48149 Münster, Germany
| | - Christoph Buten
- Center for Soft Nanoscience and Organic Chemistry Institute, Westfälische Wilhelms-Universität Münster, Busso-Peus-Strasse 10, 48149 Münster, Germany
| | - Bart Jan Ravoo
- Center for Soft Nanoscience and Organic Chemistry Institute, Westfälische Wilhelms-Universität Münster, Busso-Peus-Strasse 10, 48149 Münster, Germany
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81
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Maryam Saleh Mohammadnia, Hemmati S, Ghasemi N, Bahari M. Preparation of Carboxylated Graphene Oxide/Polydimethacrylate Nanocomposites via Atom Transfer Radical Polymerization and the Mechanical Properties of Nanocomposites. POLYMER SCIENCE SERIES B 2019. [DOI: 10.1134/s1560090419030126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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82
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Yeshchenko OA, Malynych SZ, Polomarev SO, Galabura Y, Chumanov G, Luzinov I. Towards sensor applications of a polymer/Ag nanoparticle nanocomposite film. RSC Adv 2019; 9:8498-8506. [PMID: 35518650 PMCID: PMC9061699 DOI: 10.1039/c9ra00498j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Accepted: 03/07/2019] [Indexed: 12/29/2022] Open
Abstract
We have demonstrated the capability of a nanocomposite film made of a 2D array of Ag nanoparticles embedded into a poly(glycidyl methacrylate), PGMA, matrix to monitor the presence of organic vapors in the atmosphere. Specifically, changes in the extinction spectra of the submicron nanocomposite film are used to sense the vapors. The transformations of the spectra are fully reversible and reproducible upon multiple exposures. We associate this reversibility and reproducibility with the construction of the nanocomposite film where the cross-linked PGMA network is able to spatially restore its structure upon deswelling. The structure of the extinction spectrum of the film is governed by a collective surface plasmon mode excited in the Ag NPs array. It was found that spectral bands associated with normal and tangential components of the plasmon mode change their width and position when the nanocomposite is exposed to organic vapors. This is due to increasing the spacing between neighboring NPs and a decrease of the refractive index of the polymer caused by swelling of the PGMA matrix. Therefore, the level of spectral transformation is directly related to the level of polymer–solvent thermodynamic affinity where the higher affinity corresponds to the higher level of the swelling. Therefore, we expect that the nanocomposite films (when designed for a particular solvent) can be effectively used as a sensing element in a low-cost volatile organic compounds (VOC) sensor device operating in visual light. We demonstrated the capability of a nanocomposite film made of Ag nanoparticles embedded into a polymer matrix to detect presence of organic vapors.![]()
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Affiliation(s)
- O A Yeshchenko
- Department of Physics, Taras Shevchenko National University of Kyiv 64/13 Volodymyrs'ka Str. 01601 Kyiv Ukraine
| | - S Z Malynych
- Department of Photonics, National University "Lviv Polytechnic" 12 S. Bandery St 79013 Lviv Ukraine .,Department of Electromechanics and Electronics, Hetman Petro Sahaidachnyi National Army Academy 32 Heroes of Maidan 79012 Lviv Ukraine.,Department of Materials Science and Engineering, Clemson University Clemson South Carolina 29634 USA
| | - S O Polomarev
- Department of Physics, Taras Shevchenko National University of Kyiv 64/13 Volodymyrs'ka Str. 01601 Kyiv Ukraine
| | - Yu Galabura
- Department of Materials Science and Engineering, Clemson University Clemson South Carolina 29634 USA
| | - G Chumanov
- Department of Chemistry, Clemson University Clemson South Carolina 29634 USA
| | - I Luzinov
- Department of Materials Science and Engineering, Clemson University Clemson South Carolina 29634 USA
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83
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Synthesis of Poly(methyl methacrylate) Grafted Multiwalled Carbon Nanotubes via a Combination of RAFT and Alkyne-Azide Click Reaction. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9030603] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
An efficient synthesis route was developed for the preparation of multiwalled carbon nanotube (MWCNT) nanohybrids using azide-terminated poly(methyl methacrylate) (PMMA) via a combination of reversible addition fragmentation chain transfer (RAFT) and the click reaction. A novel azido-functionalized chain transfer agent (DMP-N3) was prepared and subsequently employed to mediate the RAFT polymerizations of methyl methacrylate (MMA). The RAFT polymerizations exhibited first-order kinetics and a linear molecular weight dependence with the conversion. The kinetic results show that the grafting percentage of PMMA on the MWCNTs surface grows along with the increase of the reaction time. Even at 50 °C, the grafting rate of azide-terminated PMMA is comparatively fast in the course of the click reaction, with the alkyne groups adhered to MWCNTs in less than 24 h. The successful functionalization of PMMA onto MWCNT was proved by FTIR, while TGA was employed to calculate the grafting degree of PMMA chains (the highest GP = 21.9%). Compared with the pristine MWCNTs, a thicker diameter of the MWCNTs-g-PMMA was observed by TEM, which confirmed the grafted PMMA chain to the surface of nanotubes. Therefore, the MWCNTs-g-PMMA could be dispersed and stably suspended in water.
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84
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Kopeć M, Tas S, Cirelli M, van der Pol R, de Vries I, Vancso GJ, de Beer S. Fluorescent Patterns by Selective Grafting of a Telechelic Polymer. ACS APPLIED POLYMER MATERIALS 2019; 1:136-140. [PMID: 30923796 PMCID: PMC6433164 DOI: 10.1021/acsapm.8b00180] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 01/18/2019] [Indexed: 05/30/2023]
Abstract
The preparation of patterned ultrathin films (sub-10 nm) composed of end-anchored fluorescently labeled poly(methyl methacrylate) (PMMA) is presented. Telechelic PMMA was synthesized utilizing activator regenerated by electron transfer atom transfer radical polymerization and consecutively end-functionalized with alkynylated fluorescein by Cu-catalyzed azide-alkyne cycloaddition (CuAAC) "click" chemistry. The polymers were grafted via the α-carboxyl groups to silica or glass substrates pretreated with (3-aminopropyl)triethoxysilane (APTES). Patterned surfaces were prepared by inkjet printing of APTES onto glass substrates and selectively grafted with fluorescently end-labeled PMMA to obtain emissive arrays on the surface.
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Affiliation(s)
- Maciej Kopeć
- Materials Science and Technology of
Polymers, MESA+ Institute for Nanotechnology,
University of Twente, 7500 AE Enschede, The Netherlands
| | - Sinem Tas
- Materials Science and Technology of
Polymers, MESA+ Institute for Nanotechnology,
University of Twente, 7500 AE Enschede, The Netherlands
| | - Marco Cirelli
- Materials Science and Technology of
Polymers, MESA+ Institute for Nanotechnology,
University of Twente, 7500 AE Enschede, The Netherlands
| | - Rianne van der Pol
- Materials Science and Technology of
Polymers, MESA+ Institute for Nanotechnology,
University of Twente, 7500 AE Enschede, The Netherlands
| | - Ilse de Vries
- Materials Science and Technology of
Polymers, MESA+ Institute for Nanotechnology,
University of Twente, 7500 AE Enschede, The Netherlands
| | | | - Sissi de Beer
- Materials Science and Technology of
Polymers, MESA+ Institute for Nanotechnology,
University of Twente, 7500 AE Enschede, The Netherlands
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85
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Mantz A, Rosenthal A, Farris E, Kozisek T, Bittrich E, Nazari S, Schubert E, Schubert M, Stamm M, Uhlmann P, Pannier AK. Free Polyethylenimine Enhances Substrate-Mediated Gene Delivery on Titanium Substrates Modified With RGD-Functionalized Poly(acrylic acid) Brushes. Front Chem 2019; 7:51. [PMID: 30792979 PMCID: PMC6374293 DOI: 10.3389/fchem.2019.00051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 01/18/2019] [Indexed: 01/08/2023] Open
Abstract
Substrate mediated gene delivery (SMD) is a method of immobilizing DNA complexes to a substrate via covalent attachment or nonspecific adsorption, which allows for increased transgene expression with less DNA compared to traditional bolus delivery. It may also increase cells receptivity to transfection via cell-material interactions. Substrate modifications with poly(acrylic) acid (PAA) brushes may improve SMD by enhancing substrate interactions with DNA complexes via tailored surface chemistry and increasing cellular adhesion via moieties covalently bound to the brushes. Previously, we described a simple method to graft PAA brushes to Ti and further demonstrated conjugation of cell adhesion peptides (i.e., RGD) to the PAA brushes to improve biocompatibility. The objective of this work was to investigate the ability of Ti substrates modified with PAA-RGD brushes (PAA-RGD) to immobilize complexes composed of branched polyethyleneimine and DNA plasmids (bPEI-DNA) and support SMD in NIH/3T3 fibroblasts. Transfection in NIH/3T3 cells cultured on bPEI-DNA complexes immobilized onto PAA-RGD substrates was measured and compared to transfection in cells cultured on control surfaces with immobilized complexes including Flat Ti, PAA brushes modified with a control peptide (RGE), and unmodified PAA. Transfection was two-fold higher in cells cultured on PAA-RGD compared to those cultured on all control substrates. While DNA immobilization measured with radiolabeled DNA indicated that all substrates (PAA-RGD, unmodified PAA, Flat Ti) contained nearly equivalent amounts of loaded DNA, ellipsometric measurements showed that more total mass (i.e., DNA and bPEI, both complexed and free) was immobilized to PAA and PAA-RGD compared to Flat Ti. The increase in adsorbed mass may be attributed to free bPEI, which has been shown to improve transfection. Further transfection investigations showed that removing free bPEI from the immobilized complexes decreased SMD transfection and negated any differences in transfection success between cells cultured on PAA-RGD and on control substrates, suggesting that free bPEI may be beneficial for SMD in cells cultured on bPEI-DNA complexes immobilized on PAA-RGD grafted to Ti. This work demonstrates that substrate modification with PAA-RGD is a feasible method to enhance SMD outcomes on Ti and may be used for future applications such as tissue engineering, gene therapy, and diagnostics.
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Affiliation(s)
- Amy Mantz
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, United States
- Center for Nanohybrid Functional Materials, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Alice Rosenthal
- Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
- Institute of Polymeric Materials, Technische Universität Dresden, Dresden, Germany
| | - Eric Farris
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Tyler Kozisek
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Eva Bittrich
- Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
| | - Saghar Nazari
- Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
| | - Eva Schubert
- Center for Nanohybrid Functional Materials, University of Nebraska-Lincoln, Lincoln, NE, United States
- Department of Electrical and Computer Engineering, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Mathias Schubert
- Center for Nanohybrid Functional Materials, University of Nebraska-Lincoln, Lincoln, NE, United States
- Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
- Department of Electrical and Computer Engineering, University of Nebraska-Lincoln, Lincoln, NE, United States
- Department of Physics, Chemistry, and Biology, Linkoping University, Linkoping, Sweden
- Terahertz Materials Analysis Center (THeMAC), Linkoping University, Linkoping, Sweden
| | - Manfred Stamm
- Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
- Institute of Polymeric Materials, Technische Universität Dresden, Dresden, Germany
| | - Petra Uhlmann
- Leibniz-Institut für Polymerforschung Dresden e.V., Dresden, Germany
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Angela K. Pannier
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, United States
- Center for Nanohybrid Functional Materials, University of Nebraska-Lincoln, Lincoln, NE, United States
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86
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Giussi JM, Cortez ML, Marmisollé WA, Azzaroni O. Practical use of polymer brushes in sustainable energy applications: interfacial nanoarchitectonics for high-efficiency devices. Chem Soc Rev 2019; 48:814-849. [PMID: 30543263 DOI: 10.1039/c8cs00705e] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The discovery and development of novel approaches, materials and manufacturing processes in the field of energy are compelling increasing recognition as a major challenge for contemporary societies. The performance and lifetime of energy devices are critically dependent on nanoscale interfacial phenomena. From the viewpoint of materials design, the improvement of current technologies inevitably relies on gaining control over the complex interface between dissimilar materials. In this sense, interfacial nanoarchitectonics with polymer brushes has seen growing interest due to its potential to overcome many of the limitations of energy storage and conversion devices. Polymer brushes offer a broad variety of resources to manipulate interfacial properties and gain molecular control over the synergistic combination of materials. Many recent examples show that the rational integration of polymer brushes in hybrid nanoarchitectures greatly improves the performance of energy devices in terms of power density, lifetime and stability. Seen in this light, polymer brushes provide a new perspective from which to consider the development of hybrid materials and devices with improved functionalities. The aim of this review is therefore to focus on what polymer brush-based solutions can offer and to show how the practical use of surface-grafted polymer layers can improve the performance and efficiency of fuel cells, lithium-ion batteries, organic radical batteries, supercapacitors, photoelectrochemical cells and photovoltaic devices.
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Affiliation(s)
- Juan M Giussi
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET, Diagonal 113 y 64 (1900), La Plata, Argentina.
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87
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Pandiyarajan CK, Genzer J. Thermally Activated One-Pot, Simultaneous Radical and Condensation Reactions Generate Surface-Anchored Network Layers from Common Polymers. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02194] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- C. K. Pandiyarajan
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Jan Genzer
- Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Hokkaido 060-0808, Japan
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88
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Benkovičová M, Hološ A, NádaŽdy P, Halahovets Y, Kotlár M, Kollár J, Šiffalovič P, Jergel M, Majková E, Mosnáček J, Ivančo J. Tailoring the interparticle distance in Langmuir nanoparticle films. Phys Chem Chem Phys 2019; 21:9553-9563. [PMID: 31020973 DOI: 10.1039/c9cp02064k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The ability to control the interparticle distance in self-assembled arrays of nanoparticles plays an important role in a large number of applications, which require tunable electronic and photonic properties. Importantly, practical applications in real devices rely on arrays satisfying more stringent requirements of lateral homogeneity controlled over a large scale. Herein, the interparticle distance in ordered nanoparticle assemblies was controlled by varying the nanoparticle effective size via the molecular chemical nature and chain length of the ligand. Iron oxide nanoparticles (IONPs) were functionalized by three types of ligands, namely (i) a mixture of oleic acid/oleylamine (OA/OAm), (ii) poly(n-butyl acrylate) (PBA) and (iii) polystyrene (PS), while two different molar masses of PBA and PS were used. The polymeric ligands with narrow dispersity and bearing phosphonic chain-end groups were prepared by atom transfer radical polymerization. Functionalization of the IONPs with polymeric ligands was achieved using a ligand exchange method. Both the hydrodynamic diameter and size distribution of the nanoparticles in colloidal solution were determined by dynamic light scattering (DLS). The mean interparticle distances in Langmuir-Schaefer monolayers prepared on solid substrates were assessed by means of the pair correlation function calculated from the atomic force microscopy (AFM) images. Furthermore, the lateral ordering, homogeneity, and interparticle distances averaged over a mesoscopic scale of the ordered monolayers were studied by the grazing-incidence small-angle X-ray scattering (GISAXS) technique. We demonstrate that the (nanoparticle) centre-to-centre distance in the ordered assemblies constituted by the IONPs with the core diameter of about 6 nm can be varied from 7.6 to about 12 nm with the resulting interparticle gap change by a factor of about 4.
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Affiliation(s)
- Monika Benkovičová
- Institute of Physics, Dúbravská cesta 9, SK-845 11 Bratislava, Slovak Academy of Science, Slovakia.
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89
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Divandari M, Trachsel L, Yan W, Rosenboom JG, Spencer ND, Zenobi-Wong M, Morgese G, Ramakrishna SN, Benetti EM. Surface Density Variation within Cyclic Polymer Brushes Reveals Topology Effects on Their Nanotribological and Biopassive Properties. ACS Macro Lett 2018; 7:1455-1460. [PMID: 35651229 DOI: 10.1021/acsmacrolett.8b00847] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
While topology effects by cyclic polymers in solution and melts are well-known, their translation into the interfacial properties of polymer "brushes" provides new opportunities to impart enhanced surface lubricity and biopassivity to inorganic surfaces, above and beyond that expected for linear analogues of identical composition. The impact of polymer topology on the nanotribological and protein-resistance properties of polymer brushes is revealed by studying linear and cyclic poly(2-ethyl-2-oxazoline) (PEOXA) grafts presenting a broad range of surface densities and while shearing them alternatively against an identical brush or a bare inorganic surface. The intramolecular constraints introduced by the cyclization provide a valuable increment in both steric stabilization and load-bearing capacity for cyclic brushes. Moreover, the intrinsic absence of chain ends within cyclic adsorbates hinders interpenetration between opposing brushes, as they are slid over each other, leading to a reduction in the friction coefficient (μ) at higher pressures, a phenomenon not observed for linear grafts. The application of cyclic polymers for the modification of inorganic surfaces generates films that outperform both the nanotribological and biopassive properties of linear brushes, significantly expanding the design possibilities for synthetic biointerfaces.
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Affiliation(s)
- Mohammad Divandari
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Zürich, Switzerland
| | - Lucca Trachsel
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Zürich, Switzerland
- Tissue Engineering and Biofabrication, Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Wenqing Yan
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Zürich, Switzerland
| | - Jan-Georg Rosenboom
- Institute of Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich, Switzerland
| | - Nicholas D. Spencer
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Zürich, Switzerland
| | - Marcy Zenobi-Wong
- Tissue Engineering and Biofabrication, Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland
| | - Giulia Morgese
- Institute for Complex Molecular Systems, Technical University of Eindhoven (TU/e), Eindhoven, The Netherlands
| | - Shivaprakash N. Ramakrishna
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Zürich, Switzerland
| | - Edmondo M. Benetti
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Zürich, Switzerland
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90
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Xu R, Ma S, Wu Y, Zhou F, Liu W. Promoting Lubricity and Antifouling Properties by Supramolecular-Recognition-Based Surface Grafting. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13116-13122. [PMID: 30173516 DOI: 10.1021/acs.langmuir.8b02375] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In the supramolecular host-guest system, the host molecule selectively identifies the guest and forms the inclusion complex with the guest molecule. In this study, the physicochemical properties of solid surfaces were regulated by the interfacial supramolecular recognition. The host-guest interaction between β-cyclodextrin and guest molecules, including adamantaneacetic acid, sodium dodecyl sulfonate, and a copolymer of 2-methacryloyloxy-2-methyladamantane and 3-sulfopropyl methacrylate potassium salt, was introduced onto the silicon substrate to construct supramolecular composite surfaces. After the assembly of hydrophilic guest molecules on the host surface, the wettability, aqueous lubrication, and anti-algae cell adhesion properties of the supramolecular composite surfaces were improved. This strategy of host-guest interfacial supramolecular recognition provides a new route to prepare aqueous lubrication and antifouling materials.
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Affiliation(s)
- Rongnian Xu
- State Key Laboratory of Solid Lubrication , Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou , Gansu 730000 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100083 , P. R. China
| | - Shuanhong Ma
- State Key Laboratory of Solid Lubrication , Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou , Gansu 730000 , P. R. China
| | - Yang Wu
- State Key Laboratory of Solid Lubrication , Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou , Gansu 730000 , P. R. China
| | - Feng Zhou
- State Key Laboratory of Solid Lubrication , Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou , Gansu 730000 , P. R. China
| | - Weimin Liu
- State Key Laboratory of Solid Lubrication , Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou , Gansu 730000 , P. R. China
- College of Materials Science and Technology , Northwestern Polytechnical University , 127 Youyixi Road , 710072 Xi an , China
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91
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Dong F, Li Y, Yuan X, Wang P, Yang J, Miao L. Highly transparent thermoresponsive surfaces based on tea-stain-inspired chemistry. J Appl Polym Sci 2018. [DOI: 10.1002/app.46694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Fuxin Dong
- School of Materials Science and Energy Engineering; Foshan University, Jiangwan 1st Road; Foshan Guangdong 528000 People's Republic of China
| | - Yue Li
- School of Materials Science and Energy Engineering; Foshan University, Jiangwan 1st Road; Foshan Guangdong 528000 People's Republic of China
| | - Xiaohua Yuan
- School of Materials Science and Energy Engineering; Foshan University, Jiangwan 1st Road; Foshan Guangdong 528000 People's Republic of China
| | - Ping Wang
- School of Materials Science and Energy Engineering; Foshan University, Jiangwan 1st Road; Foshan Guangdong 528000 People's Republic of China
| | - Junjie Yang
- School of Materials Science and Energy Engineering; Foshan University, Jiangwan 1st Road; Foshan Guangdong 528000 People's Republic of China
| | - Lei Miao
- School of Materials Science and Energy Engineering; Foshan University, Jiangwan 1st Road; Foshan Guangdong 528000 People's Republic of China
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92
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Lu X, Zhang K. PEGylation of therapeutic oligonucletides: From linear to highly branched PEG architectures. NANO RESEARCH 2018; 11:5519-5534. [PMID: 30740197 PMCID: PMC6366847 DOI: 10.1007/s12274-018-2131-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 06/08/2018] [Accepted: 06/18/2018] [Indexed: 05/12/2023]
Abstract
PEGylation, the attachment of poly(ethylene glycol) (PEG), has been adopted to improve the pharmacokinetic properties of oligonucleotide therapeutics for nearly 30 years. Prior efforts mainly focused on the investigation of linear or slightly branched PEG having different molecular weights, terminal functional groups, and possible oligonucleotide sites for functionalization. Recent studies on highly branched PEG (including brush, star, and micellar structures) indicate superior properties in several areas including cellular uptake, gene regulation efficacy, reduction of side effects, and biodistribution. This review focuses on comparing the effects of PEG architecture on the physiochemical and biological properties of the PEGylated oligonucleotide.
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Affiliation(s)
- Xueguang Lu
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, USA
| | - Ke Zhang
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, USA
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93
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Lu X, Khanna A, Luzinov I, Nagatomi J, Harman M. Surface modification of polypropylene surgical meshes for improving adhesion with poloxamine hydrogel adhesive. J Biomed Mater Res B Appl Biomater 2018; 107:1047-1055. [PMID: 30267644 DOI: 10.1002/jbm.b.34197] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 05/29/2018] [Accepted: 06/27/2018] [Indexed: 01/18/2023]
Abstract
Tissue adhesive has notable clinical benefits in hernia repair fixation. A novel poloxamine tissue adhesive was previously shown to successfully bond collagen tissue with adequate adhesive strength. In application related to attachment of polypropylene (PP) mesh, the adhesive strength between the mesh and poloxamine hydrogel adhesive is limited by the hydrophobicity of PP monofilaments and lack of covalent bond formation. The purpose of this study was to compare two different surface modifications [bovine serum albumin (BSA) adsorption and poly-glycidyl methacrylate/human serum albumin (PGMA/HSA) grafting] of PP mesh for improving the adhesive strength between poloxamine hydrogel adhesive and PP mesh. The PGMA/HSA surface modification significantly improved the adhesive strength for meshes attached with poloxamine hydrogel tissue adhesive compared with unmodified meshes and meshes modified by BSA adsorption. An area of 1 cm2 adhesive provided for a maximum adhesive strength of 65-70 kPa for meshes modified by PGMA/HSA, 4-13 kPa for meshes modified by BSA, and 22-45 kPa for unmodified meshes. Optical microscopy and infrared spectroscopy (FTIR) confirmed the improved adhesive strength was achieved through mechanical interlock of the hydrogel tissue adhesive into the PP mesh pores and chemical bonding of the albumin after successful PGMA/HSA grafting onto the PP monofilaments. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 1047-1055, 2019.
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Affiliation(s)
- Xinyue Lu
- Bioengineering Department, Clemson University, Clemson, South Carolina
| | - Astha Khanna
- Bioengineering Department, Clemson University, Clemson, South Carolina
| | - Igor Luzinov
- Materials Science and Engineering Department, Clemson University, Clemson, South Carolina
| | - Jiro Nagatomi
- Bioengineering Department, Clemson University, Clemson, South Carolina
| | - Melinda Harman
- Bioengineering Department, Clemson University, Clemson, South Carolina
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94
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Yu L, Martin IJ, Kasi RM, Wei M. Enhanced Intrafibrillar Mineralization of Collagen Fibrils Induced by Brushlike Polymers. ACS APPLIED MATERIALS & INTERFACES 2018; 10:28440-28449. [PMID: 30081624 DOI: 10.1021/acsami.8b10234] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Biomimetic mineralization of collagen fibrils is an essential process because the mineralized collagen fibers constitute the basic building block of natural bone. To overcome the limited availability and high cost of the noncollagenous proteins (NCPs) that regulate the mineralization process of collagen, commercially available analogues were developed to replicate sequestration and templating functions of NCPs. The use of branched polymers in intrafibrillar mineralization applications has never been explored. In this work, two novel carboxyl-rich brushlike polymers, a carboxylated polyethylene glycol terpolymer (PEG-COOH) and a polyethylene glycol/poly(acrylic acid) copolymer (PEG-PAA), were synthesized and modified to mimic the sequestration function of NCPs to induce intrafibrillar mineralization of collagen fibrils. It was found that these synthetic brushlike polymers are able to induce intrafibrillar mineralization by stabilizing the amorphous calcium phosphate (ACP) nanoprecursors and subsequently facilitating the infiltration of ACP into the gap zone of collagen microfibrils. Moreover, the weight ratios of mineral to collagen in the mineralized collagen fibrils in the presence of these brushlike polymers were 2.17 ± 0.07 for PEG-COOH and 2.23 ± 0.03 for PEG-PAA, while it is only 1.81 ± 0.21 for linear PAA. Plausible mineralization mechanisms using brushlike polymers are proposed that offer significant insight into the understanding of collagen mineralization induced by synthetic NCP analogues.
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95
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Moses (Varin) KJ, Kim S, Bilal M, Cohen Y. Tethered hydrophilic polymers layers on a polyamide surface. J Appl Polym Sci 2018. [DOI: 10.1002/app.46843] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kari J. Moses (Varin)
- Department of Chemical and Biomolecular Engineering University of California 5531 Boelter Hall, Los Angeles California 90095‐1592
| | - Soomin Kim
- Department of Chemical and Biomolecular Engineering University of California 5531 Boelter Hall, Los Angeles California 90095‐1592
| | - Muhammad Bilal
- Department of Chemical and Biomolecular Engineering University of California 5531 Boelter Hall, Los Angeles California 90095‐1592
| | - Yoram Cohen
- Department of Chemical and Biomolecular Engineering University of California 5531 Boelter Hall, Los Angeles California 90095‐1592
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96
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Tanoue H, Inoue K, Yamada NL, Ito K, Miyao S, Ishizone T, Yokoyama H. A thermoresponsive dynamic polymer brush fabricated by the segregation of amphiphilic diblock copolymers. SOFT MATTER 2018; 14:5930-5935. [PMID: 29966025 DOI: 10.1039/c8sm00891d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A highly dense polymer brush was previously fabricated by the spontaneous segregation of amphiphilic diblock copolymers in an elastomer matrix into water and a hydrophobic polymer interface and named a 'dynamic polymer brush'. We fabricated a lower critical solution temperature (LCST)-type thermoresponsive dynamic polymer brush by mixing polyisoprene-b-poly[tri(ethylene glycol)methyl ether methacrylate] (PI-b-PME3MA) into a polystyrene-b-polyisoprene-b-polystyrene (SIS) elastomer. The LCST of PME3MA in water is 52 °C. The structure of the polymer brush was determined at several different temperatures using neutron reflectivity. With increasing temperature, the brush thickness of the LCST-type thermoresponsive dynamic polymer brush decreases, similar to the conventional fixed brush with the LCST-type thermoresponse. However, the graft density of the dynamic polymer brush surprisingly increases with increasing temperature. The change of the brush density of the conventional fixed polymer brush is not allowed. However, we observed for the first time that dynamic polymer brushes uniquely respond to increasing temperature with increasing brush densities.
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Affiliation(s)
- Hirokazu Tanoue
- Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8561, Japan.
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97
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Rosenthal A, Mantz A, Nguyen A, Bittrich E, Schubert E, Schubert M, Stamm M, Pannier AK, Uhlmann P. Biofunctionalization of Titanium Substrates Using Nanoscale Polymer Brushes with Cell Adhesion Peptides. J Phys Chem B 2018; 122:6543-6550. [PMID: 29878775 DOI: 10.1021/acs.jpcb.8b02407] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The grafting of polymer brushes to substrates is a promising method to modify surface properties such as wettability and the affinity toward proteins and cells for applications in microelectronics, biomedical devices, and sensors. Poly(acrylic) acid (PAA) brushes are of high interest because of their stimuli-responsive behavior and the presence of carboxy (COOH) groups, which allow for immobilization of bioactive molecules. The "grafting-to" approach results in homogeneous and well-defined polymer brushes, but, although grafting-to has been demonstrated with PAA brushes on silicon (Si) substrates, it has not been performed on biocompatible materials such as titanium (Ti). Here, we have described a facile method to modify biocompatible Ti substrates with PAA brushes to amplify their substrate functionality. The grafting-to PAA "pseudo" brushes were successfully grafted to Ti substrates and retained their pH-dependent swelling behavior. An RGD peptide was covalently bound to COOH groups of the PAA brushes (PAA-RGD) as a model bioactive group. While NIH/3T3 cell adhesion was significantly decreased on PAA-functionalized Ti substrates, PAA-RGD on Ti had cell adhesion comparable to that of flat Ti at 24 and 48 h, with significantly more cells adhered to PAA-RGD compared to PAA on Ti at 48 h.
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Affiliation(s)
- Alice Rosenthal
- Leibniz Institute of Polymer Research Dresden , 01069 Dresden , Germany.,Physical Chemistry of Polymeric Materials , Technische Universität Dresden , 01062 Dresden , Germany
| | | | | | - Eva Bittrich
- Leibniz Institute of Polymer Research Dresden , 01069 Dresden , Germany
| | | | | | - Manfred Stamm
- Leibniz Institute of Polymer Research Dresden , 01069 Dresden , Germany.,Physical Chemistry of Polymeric Materials , Technische Universität Dresden , 01062 Dresden , Germany
| | | | - Petra Uhlmann
- Leibniz Institute of Polymer Research Dresden , 01069 Dresden , Germany
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98
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Liu L, Zhao X, Zeng L, Zhu T. Determination of Sulfamerazine in River Water Using Thermoresponsive Modified Silica for Solid-Phase Extraction with High-Performance Liquid Chromatography Detection. ANAL LETT 2018. [DOI: 10.1080/00032719.2018.1447951] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Lingling Liu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, China
| | - Xiaowei Zhao
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, China
| | - Lintao Zeng
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, China
| | - Tao Zhu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, China
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99
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Borodinov N, Gil D, Savchak M, Gross CE, Yadavalli NS, Ma R, Tsukruk VV, Minko S, Vertegel A, Luzinov I. En Route to Practicality of the Polymer Grafting Technology: One-Step Interfacial Modification with Amphiphilic Molecular Brushes. ACS APPLIED MATERIALS & INTERFACES 2018; 10:13941-13952. [PMID: 29608051 DOI: 10.1021/acsami.7b19815] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Surface modification with polymer grafting is a versatile tool for tuning the surface properties of a wide variety of materials. From a practical point of view, such a process should be readily scalable and transferable between different substrates and consist of as least number of steps as possible. To this end, a cross-linkable amphiphilic copolymer system that is able to bind covalently to surfaces and form permanently attached networks via a one-step procedure is reported here. This system consists of brushlike copolymers (molecular brushes) made of glycidyl methacrylate, poly(oligo(ethylene glycol) methyl ether methacrylate), and lauryl methacrylate, which provide the final product with tunable reactivity and balance between hydrophilicity and hydrophobicity. The detailed study of the copolymer synthesis and properties has been carried out to establish the most efficient pathway to design and tailor this amphiphilic molecular brush system for specific applications. As an example of the applications, we showed the ability to control the deposition of graphene oxide (GO) sheets on both hydrophilic and hydrophobic surfaces using GO modified with the molecular brushes. Also, the capability to tune the osteoblast cell adhesion with the copolymer-based coatings was demonstrated.
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Affiliation(s)
| | | | | | - Christopher E Gross
- Department of Orthopaedics , Medical University of South Carolina , Charleston , South Carolina 29425 , United States
| | - Nataraja Sekhar Yadavalli
- Nanostructured Materials Laboratory , University of Georgia , Athens , Georgia 30602 , United States
| | - Ruilong Ma
- School of Materials Science and Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Vladimir V Tsukruk
- School of Materials Science and Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Sergiy Minko
- Nanostructured Materials Laboratory , University of Georgia , Athens , Georgia 30602 , United States
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100
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Ortiz R, Olsen S, Thormann E. Salt-Induced Control of the Grafting Density in Poly(ethylene glycol) Brush Layers by a Grafting-to Approach. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:4455-4464. [PMID: 29583002 DOI: 10.1021/acs.langmuir.8b00030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In this work, a method to obtain control of the grafting density during the formation of polymer brush layers by the grafting-to method of thiolated poly(ethylene glycol) onto gold is presented. The grafting density of the polymer chains was adjusted by adding Na2SO4 in concentrations between 0.2 and 0.9 M to the aqueous polymer solution during the grafting process. The obtained grafting densities ranged from 0.26 to 1.60 chains nm-2, as determined by surface plasmon resonance. The kinetics of the grafting process were studied in situ by a quartz crystal microbalance with dissipation, and a mushroom to brush conformational transition was observed when the polymer was grafted in the presence of Na2SO4. The transition from mushroom to brush was only observed for long periods of grafting, highlighting the importance of time to obtain high grafting densities. Finally, the prepared brush layer with the highest grafting density showed high resistance to the adsorption of bovine serum albumin, while layers with a lower grafting density showed only limited resistance.
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Affiliation(s)
- Roberto Ortiz
- Department of Chemistry , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
| | | | - Esben Thormann
- Department of Chemistry , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
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