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Sant S, Kaur K, Klok HA. Swelling and Degrafting of Poly(3-sulfopropyl methacrylate) Brushes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39348193 DOI: 10.1021/acs.langmuir.4c02714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/01/2024]
Abstract
Upon exposure to a good solvent, polymer brushes prepared via surface-initiated polymerization can undergo degrafting via cleavage of bonds that anchor the polymer tethers to the underlying substrate. As polymer brushes are often used in a solvent swollen state, this has implications for the longevity of these polymer coatings. Improving the fundamental understanding of this process is thus also of practical importance. It is believed that degrafting is the consequence of tension amplification at the bonds that anchor the polymer grafts, which is driven by swelling of the polymer brush film. Taking advantage of the sensitivity of the swelling behavior of poly(3-sulfopropyl methacrylate) (PSPMA) brushes toward changes in ionic strength, this study has investigated the degrafting behavior of these brushes in aqueous media at different LiCl and NaCl concentrations. The aim of these experiments was to investigate whether the rate constant of the degrafting process was correlated with the swelling ratio of the PSPMA brushes. The experiments show that in aqueous LiCl solutions, the initial rate constant of the degrafting process is correlated with the swelling ratio of the PSPMA brush. This observation represents a first example of the correlation between these two parameters for hydrophilic polymer brushes in aqueous media and supports the idea that degrafting is a mechanochemical process driven by a swelling-induced tension at the polymer-substrate interface.
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Affiliation(s)
- Sabrina Sant
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères, École Polytechnique Fédérale de Lausanne (EPFL), Station 12, CH-1015 Lausanne, Switzerland
- National Center of Competence in Research Bio-inspired Materials, Chemin des Verdiers 4, CH-1700 Fribourg, Switzerland
| | - Kuljeet Kaur
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères, École Polytechnique Fédérale de Lausanne (EPFL), Station 12, CH-1015 Lausanne, Switzerland
- National Center of Competence in Research Bio-inspired Materials, Chemin des Verdiers 4, CH-1700 Fribourg, Switzerland
| | - Harm-Anton Klok
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères, École Polytechnique Fédérale de Lausanne (EPFL), Station 12, CH-1015 Lausanne, Switzerland
- National Center of Competence in Research Bio-inspired Materials, Chemin des Verdiers 4, CH-1700 Fribourg, Switzerland
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2
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Wang J, Zhao S, Yi J, Sun Y, Agrawal M, Oelze ML, Li K, Moore JS, Chen YS. Injectable Mechanophore Nanoparticles for Deep-Tissue Mechanochemical Dynamic Therapy. ACS NANO 2024. [PMID: 39250826 DOI: 10.1021/acsnano.4c04090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/11/2024]
Abstract
Photodynamic therapy (PDT) and sonodynamic therapy (SDT), using nonionizing light and ultrasound to generate reactive oxygen species, offer promising localized treatments for cancers. However, the effectiveness of PDT is hampered by inadequate tissue penetration, and SDT largely relies on pyrolysis and sonoluminescence, which may cause tissue injury and imprecise targeting. To address these issues, we have proposed a mechanochemical dynamic therapy (MDT) that uses free radicals generated from mechanophore-embedded polymers under mechanical stress to produce reactive oxygen species for cancer treatment. Yet, their application in vivo is constrained by the bulk form of the polymer and the need for high ultrasound intensities for activation. In this study, we developed injectable, nanoscale mechanophore particles with enhanced ultrasound sensitivity by leveraging a core-shell structure comprising silica nanoparticles (NPs) whose interfaces are linked to polymer brushes by an azo mechanophore moiety. Upon focused ultrasound (FUS) treatment, this injectable NP generates reactive oxygen species (ROS), demonstrating promising results in both an in vitro 4T1 cell model and an in vivo mouse model of orthotopic breast cancers. This research offers an alternative therapy technique, integrating force-responsive azo mechanophores and FUS under biocompatible conditions.
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Affiliation(s)
- Jian Wang
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Shensheng Zhao
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Nick Holonyak Micro and Nanotechnology Laboratory, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Electrical and Computer Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Junxi Yi
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Nick Holonyak Micro and Nanotechnology Laboratory, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Yunyan Sun
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Megha Agrawal
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Nick Holonyak Micro and Nanotechnology Laboratory, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Michael L Oelze
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Nick Holonyak Micro and Nanotechnology Laboratory, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Electrical and Computer Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Biomedical and Translational Sciences, Carle Illinois College of Medicine, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - King Li
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Biomedical and Translational Sciences, Carle Illinois College of Medicine, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Jeffrey S Moore
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Yun-Sheng Chen
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Nick Holonyak Micro and Nanotechnology Laboratory, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Electrical and Computer Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Biomedical and Translational Sciences, Carle Illinois College of Medicine, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Cancer Center at Illinois, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
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3
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Pavón C, Benetti EM, Lorandi F. Polymer Brushes on Nanoparticles for Controlling the Interaction with Protein-Rich Physiological Media. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:11843-11857. [PMID: 38787578 DOI: 10.1021/acs.langmuir.4c00956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
The interaction of nanoparticles (NPs) with biological environments triggers the formation of a protein corona (PC), which significantly influences their behavior in vivo. This review explores the evolving understanding of PC formation, focusing on the opportunity for decreasing or suppressing protein-NP interactions by macromolecular engineering of NP shells. The functionalization of NPs with a dense, hydrated polymer brush shell is a powerful strategy for imparting stealth properties in order to elude recognition by the immune system. While poly(ethylene glycol) (PEG) has been extensively used for this purpose, concerns regarding its stability and immunogenicity have prompted the exploration of alternative polymers. The stealth properties of brush shells can be enhanced by tailoring functionalities and structural parameters, including the molar mass, grafting density, and polymer topology. Determining correlations between these parameters and biopassivity has enabled us to obtain polymer-grafted NPs with high colloidal stability and prolonged circulation time in biological media.
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Affiliation(s)
- Carlos Pavón
- Laboratory for Macromolecular and Organic Chemistry (MOC), Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Edmondo M Benetti
- Laboratory for Macromolecular and Organic Chemistry (MOC), Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Francesca Lorandi
- Laboratory for Macromolecular and Organic Chemistry (MOC), Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy
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Song X, Man J, Qiu Y, Wang J, Liu J, Li R, Zhang Y, Li J, Li J, Chen Y. Design, preparation, and characterization of lubricating polymer brushes for biomedical applications. Acta Biomater 2024; 175:76-105. [PMID: 38128641 DOI: 10.1016/j.actbio.2023.12.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/21/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
The lubrication modification of biomedical devices significantly enhances the functionality of implanted interventional medical devices, thereby providing additional benefits for patients. Polymer brush coating provides a convenient and efficient method for surface modification while ensuring the preservation of the substrate's original properties. The current research has focused on a "trial and error" method to finding polymer brushes with superior lubricity qualities, which is time-consuming and expensive, as obtaining effective and long-lasting lubricity properties for polymer brushes is difficult. This review summarizes recent research advances in the biomedical field in the design, material selection, preparation, and characterization of lubricating and antifouling polymer brushes, which follow the polymer brush development process. This review begins by examining various approaches to polymer brush design, including molecular dynamics simulation and machine learning, from the fundamentals of polymer brush lubrication. Recent advancements in polymer brush design are then synthesized and potential avenues for future research are explored. Emphasis is placed on the burgeoning field of zwitterionic polymer brushes, and highlighting the broad prospects of supramolecular polymer brushes based on host-guest interactions in the field of self-repairing polymer brush applications. The review culminates by providing a summary of methodologies for characterizing the structural and functional attributes of polymer brushes. It is believed that a development approach for polymer brushes based on "design-material selection-preparation-characterization" can be created, easing the challenge of creating polymer brushes with high-performance lubricating qualities and enabling the on-demand creation of coatings. STATEMENT OF SIGNIFICANCE: Biomedical devices have severe lubrication modification needs, and surface lubrication modification by polymer brush coating is currently the most promising means. However, the design and preparation of polymer brushes often involves "iterative testing" to find polymer brushes with excellent lubrication properties, which is both time-consuming and expensive. This review proposes a polymer brush development process based on the "design-material selection-preparation-characterization" strategy and summarizes recent research advances and trends in the design, material selection, preparation, and characterization of polymer brushes. This review will help polymer brush researchers by alleviating the challenges of creating polymer brushes with high-performance lubricity and promises to enable the on-demand construction of polymer brush lubrication coatings.
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Affiliation(s)
- Xinzhong Song
- Key Laboratory of High Efficiency and Clean Mechanicalanufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, PR China; Key National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, PR China
| | - Jia Man
- Key Laboratory of High Efficiency and Clean Mechanicalanufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, PR China; Key National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, PR China.
| | - Yinghua Qiu
- Key Laboratory of High Efficiency and Clean Mechanicalanufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, PR China; Key National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, PR China
| | - Jiali Wang
- Qilu Hospital of Shandong University, Jinan 250012, PR China
| | - Jianing Liu
- Qilu Hospital of Shandong University, Jinan 250012, PR China
| | - Ruijian Li
- Qilu Hospital of Shandong University, Jinan 250012, PR China
| | - Yongqi Zhang
- Key Laboratory of High Efficiency and Clean Mechanicalanufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, PR China; Key National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, PR China
| | - Jianyong Li
- Key Laboratory of High Efficiency and Clean Mechanicalanufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, PR China; Key National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, PR China
| | - Jianfeng Li
- Key Laboratory of High Efficiency and Clean Mechanicalanufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, PR China; Key National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, PR China
| | - Yuguo Chen
- Qilu Hospital of Shandong University, Jinan 250012, PR China
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5
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Sato T, Dunderdale GJ, Hozumi A. Threshold of Surface Initiator Concentration for Polymer Brush Growth by Surface-Initiated Atom Transfer Radical Polymerization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:480-488. [PMID: 38127729 DOI: 10.1021/acs.langmuir.3c02756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
The surface modification of various materials by grafting functional molecules has attracted much attention from fundamental research to practical applications because of its ability to impart various physical and chemical properties to the surfaces. One promising approach is the use of polymer brushes synthesized by atom transfer radical polymerization (ATRP) from surface-tethered initiators (SIs). In this study, for the purpose of controlling the grafting amounts/densities of polymer brushes, we developed a facile method to precisely regulate SI concentrations of SI layers (SILs) by serial dilution based on a sol-gel method. By simply mixing organosilanes terminated with and without an initiator group ((p-chloromethyl) phenyltrimethoxysilane (CMPTMS) and phenyltrimethoxysilane (PTMS), respectively) with tetraethoxysilane (TEOS), SI concentrations of SILs could be arbitrarily tuned precisely by varying dilution factors of (CMPTMS + PTMS)/CMPTMS (DFs, 1-107). The resulting SILs prepared at different DFs were highly smooth and transparent. X-ray photoelectron spectroscopy (XPS) also confirmed that the SIs were homogeneously distributed at the topmost surface of the SILs and their concentrations were proven to be accurately and precisely controlled from high to extremely low, comparable to theoretical values. Subsequent SI-ATRP in air ("paint-on" SI-ATRP) of two different types of monomers (hydrophobic/nonionic (2,3,4,5,6-pentafluorostyrene) and hydrophilic/ionic (sodium 4-styrenesulfonate)) demonstrated that polymer brushes with different grafting amounts/densities were successfully grafted only from SILs with DFs of 1-104 (theoretical SI concentrations: 3.9 × 10-4 ∼ 3.5 units/nm2), while at DFs of 105 and above (theoretical SI concentrations: <3.9 × 10-5 units/nm2), no sign of polymer brush growth was confirmed by thickness, XPS, and water contact angle data. Therefore, we are the first to gather evidence that the approximate threshold of SI concentration required for "paint-on" SI-ATRP might be on the order of 10-4 ∼ 10-5 units/nm2.
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Affiliation(s)
- Tomoya Sato
- National Institute of Advanced Industrial Science and Technology (AIST), 4-205, Sakurazaka, Moriyama, Nagoya 463-8560, Japan
| | - Gary J Dunderdale
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, U.K
| | - Atsushi Hozumi
- National Institute of Advanced Industrial Science and Technology (AIST), 4-205, Sakurazaka, Moriyama, Nagoya 463-8560, Japan
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6
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Akintola J, Chen Y, Digby ZA, Schlenoff JB. Antifouling Coatings from Glassy Polyelectrolyte Complex Films. ACS APPLIED MATERIALS & INTERFACES 2023; 15:50058-50068. [PMID: 37871187 DOI: 10.1021/acsami.3c11744] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Coatings that prevent or decrease fouling are sought for many applications, including those that inhibit the attachment of organisms in aquatic environments. To date, antifouling coatings have mostly followed design criteria assembled over decades: surfaces should be well/strongly hydrated, possess low net charge, and maintain a hydrophilic character when exposed to the location of use. Thus, polymers based on ethylene glycol or zwitterionic repeat units have been shown to be highly effective. Unfortunately, hydrated materials can be quite soft, limiting their use in some environments. In a major paradigm shift, this work describes glassy antifouling films made from certain complexes of positive and negative polyelectrolytes. The dense network of electrostatic interactions yields tough materials below the glass transition temperature, Tg, in normal use, while the highly ionic character of these polyelectrolyte complexes ensures strong hydration. The proximity of equal numbers of opposite charges within these complexes mimics zwitterionic structures. Films, assembled layer-by-layer from aqueous solutions, contained sulfonated poly(ether ether ketone), SPEEK, a rigid polyelectrolyte that binds strongly to a selection of quaternary ammonium polycations. Layer-by-layer buildup of SPEEK and polycations was linear, indicating strong complexes between polyelectrolytes. Calorimetry also showed that complex formation was exothermic. Surfaces coated with these films in the 100 nm thickness range completely resisted adhesion of the common flagellate green algae, Chlamydomonas reinhardtii, which were removed from surfaces at a minimum applied flow rate of 0.8 cm s-1. The total surface charge density of adsorbed cations, determined with a sensitive radioisotopic label, was very low, around 10% of a monolayer, which minimized adsorption driven by counterion release from the surface. The viscoelastic properties of the complexes, which were stable even in concentrated salt solutions, were explored using rheology of bulk samples. When fully hydrated, their Tg values were observed to be above 75 °C.
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Affiliation(s)
- John Akintola
- Department of Chemistry and Biochemistry , The Florida State University , Tallahassee, Florida 32308-4390 , United States
| | - Yuhui Chen
- Department of Chemistry and Biochemistry , The Florida State University , Tallahassee, Florida 32308-4390 , United States
| | - Zachary A Digby
- Department of Chemistry and Biochemistry , The Florida State University , Tallahassee, Florida 32308-4390 , United States
| | - Joseph B Schlenoff
- Department of Chemistry and Biochemistry , The Florida State University , Tallahassee, Florida 32308-4390 , United States
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7
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You B, Huang CF, Lu JY. Terahertz Humidity Sensing Based on Surface-Modified Polymer Mesh Membranes with Photografting PEGMA Brush. Polymers (Basel) 2023; 15:3302. [PMID: 37571196 PMCID: PMC10422572 DOI: 10.3390/polym15153302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/28/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
A simple and compact intensity-interrogated terahertz (THz) relative humidity (RH) sensing platform is successfully demonstrated in experiments on the basis of combining a porous polymer sensing membrane and a continuous THz electronic system. The RH-sensing membrane is fabricated by surface modification of a porous polymer substrate with hydrophilic and photosensitive copolymer brushes via a UV-induced graft-polymerization process. The intensity interrogation sensing scheme indicated that the power reduction of the 0.4 THz wave is dependent on the grafting density of the copolymer brushes and proportional to the RH percent levels in the humidity-controlled air-sealed chamber. This finding was verified by the water contact angle measurement. Based on the slope of the proportional relation, the best sensitivity of the hydrophilic surface-modified sensing membrane was demonstrated at 0.0423 mV/% RH at the copolymer brush density of 1.57 mg/mm3 grafted on the single side of the sensing membrane. The sensitivity corresponds to a detection limit of approximately 1% RH. The THz RH sensing membrane was proven to exhibit the advantages of low loss, low cost, flexibility, high sensitivity, high RH resolution, and a wide RH working range of 25-99%. Thus, it is a good candidate for novel applications of wearable electronics, water- or moisture-related industrial and bio-sensing.
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Affiliation(s)
- Borwen You
- Department of Physics, National Changhua University of Education, No. 1 Jinde Road, Changhua 500207, Taiwan;
| | - Chih-Feng Huang
- Department of Chemical Engineering, i-Center for Advanced Science and Technology (iCAST), National Chung Hsing University, 145 Xingda Road, South District, Taichung 40227, Taiwan
| | - Ja-Yu Lu
- Department of Photonics, National Cheng Kung University, No. 1 University Road, Tainan 70101, Taiwan
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Li X, Feng Z, Fang C, Wei Y, Ji D, Hu W. Non-fouling polymer brush grafted fluorine-doped tin oxide enabled optical and chemical enhancement for sensitive label-free antibody microarrays. LAB ON A CHIP 2023; 23:2477-2486. [PMID: 37097479 DOI: 10.1039/d3lc00042g] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Oblique-incidence reflectivity difference (OIRD) is a compelling technique for real-time, label-free and non-destructive detection of antibody microarray chips, but its sensitivity needs essential improvement for clinical diagnosis. In this study, we report an innovative high-performance OIRD microarray by using poly[oligo(ethylene glycol) methacrylate-co-glycidyl methacrylate] (POEGMA-co-GMA) brush grafted fluorine-doped tin oxide (FTO) as the chip substrate. The polymer brush enhances the interfacial binding reaction efficiency of targets from the complicated sample matrix due to its high antibody loading and excellent anti-fouling merits; the FTO-polymer brush layered structure, on the other hand, excites the interference enhancement effect of OIRD to achieve enhanced intrinsic optical sensitivity. Synergistically, the sensitivity of this chip is significantly improved compared to rival chips, achieving a limit of detection (LOD) as low as 25 ng mL-1 for the model target C-reactive protein (CRP) in 10% human serum. This work explores the tremendous influence of the chip interfacial structure on the OIRD sensitivity and proposes a rational interfacial engineering strategy to boost the performance of the label-free OIRD based microarray and other bio-devices.
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Affiliation(s)
- Xiaoyi Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China.
| | - Zhihao Feng
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China.
| | - Changxiang Fang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China.
| | - Yunpeng Wei
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China.
| | - Dandan Ji
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China.
| | - Weihua Hu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China.
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9
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Brotherton EE, Johnson EC, Smallridge MJ, Hammond DB, Leggett GJ, Armes SP. Hydrophilic Aldehyde-Functional Polymer Brushes: Synthesis, Characterization, and Potential Bioapplications. Macromolecules 2023; 56:2070-2080. [PMID: 36938510 PMCID: PMC10018759 DOI: 10.1021/acs.macromol.2c02471] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/06/2023] [Indexed: 02/24/2023]
Abstract
Surface-initiated activators regenerated by electron transfer atom transfer radical polymerization (ARGET ATRP) is used to polymerize a cis-diol-functional methacrylic monomer (herein denoted GEO5MA) from planar silicon wafers. Ellipsometry studies indicated dry brush thicknesses ranging from 40 to 120 nm. The hydrophilic PGEO5MA brush is then selectively oxidized using sodium periodate to produce an aldehyde-functional hydrophilic PAGEO5MA brush. This post-polymerization modification strategy provides access to significantly thicker brushes compared to those obtained by surface-initiated ARGET ATRP of the corresponding aldehyde-functional methacrylic monomer (AGEO5MA). The much slower brush growth achieved in the latter case is attributed to the relatively low aqueous solubility of the AGEO5MA monomer. X-ray photoelectron spectroscopy (XPS) analysis confirmed that precursor PGEO5MA brushes were essentially fully oxidized to the corresponding PAGEO5MA brushes within 30 min of exposure to a dilute aqueous solution of sodium periodate at 22 °C. PAGEO5MA brushes were then functionalized via Schiff base chemistry using an amino acid (histidine), followed by reductive amination with sodium cyanoborohydride. Subsequent XPS analysis indicated that the mean degree of histidine functionalization achieved under optimized conditions was approximately 81%. Moreover, an XPS depth profiling experiment confirmed that the histidine groups were uniformly distributed throughout the brush layer. Surface ζ potential measurements indicated a significant change in the electrophoretic behavior of the zwitterionic histidine-functionalized brush relative to that of the non-ionic PGEO5MA precursor brush. The former brush exhibited cationic character at low pH and anionic character at high pH, with an isoelectric point being observed at around pH 7. Finally, quartz crystal microbalance studies indicated minimal adsorption of a model globular protein (BSA) on a PGEO5MA brush-coated substrate, whereas strong protein adsorption via Schiff base chemistry occurred on a PAGEO5MA brush-coated substrate.
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Affiliation(s)
- Emma E. Brotherton
- Dainton
Building, Department of Chemistry, The University
of Sheffield, Brook Hill, Sheffield, South
Yorkshire S3 7HF, U.K.
| | - Edwin C. Johnson
- Dainton
Building, Department of Chemistry, The University
of Sheffield, Brook Hill, Sheffield, South
Yorkshire S3 7HF, U.K.
| | | | - Deborah B. Hammond
- Dainton
Building, Department of Chemistry, The University
of Sheffield, Brook Hill, Sheffield, South
Yorkshire S3 7HF, U.K.
| | - Graham J. Leggett
- Dainton
Building, Department of Chemistry, The University
of Sheffield, Brook Hill, Sheffield, South
Yorkshire S3 7HF, U.K.
| | - Steven P. Armes
- Dainton
Building, Department of Chemistry, The University
of Sheffield, Brook Hill, Sheffield, South
Yorkshire S3 7HF, U.K.
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10
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Metze F, Sant S, Meng Z, Klok HA, Kaur K. Swelling-Activated, Soft Mechanochemistry in Polymer Materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:3546-3557. [PMID: 36848262 PMCID: PMC10018775 DOI: 10.1021/acs.langmuir.2c02801] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 01/26/2023] [Indexed: 06/12/2023]
Abstract
Swelling in polymer materials is a ubiquitous phenomenon. At a molecular level, swelling is dictated by solvent-polymer interactions, and has been thoroughly studied both theoretically and experimentally. Favorable solvent-polymer interactions result in the solvation of polymer chains. For polymers in confined geometries, such as those that are tethered to surfaces, or for polymer networks, solvation can lead to swelling-induced tensions. These tensions act on polymer chains and can lead to stretching, bending, or deformation of the material both at the micro- and macroscopic scale. This Invited Feature Article sheds light on such swelling-induced mechanochemical phenomena in polymer materials across dimensions, and discusses approaches to visualize and characterize these effects.
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11
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Schulte A, de Los Santos Pereira A, Pola R, Pop-Georgievski O, Jiang S, Romanenko I, Singh M, Sedláková Z, Schönherr H, Poręba R. On-Demand Cell Sheet Release with Low Density Peptide-Functionalized Non-LCST Polymer Brushes. Macromol Biosci 2023; 23:e2200472. [PMID: 36598869 DOI: 10.1002/mabi.202200472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/16/2022] [Indexed: 01/05/2023]
Abstract
Cell sheet harvesting offers a great potential for the development of new therapies for regenerative medicine. For cells to adhere onto surfaces, proliferate, and to be released on demand, thermoresponsive polymeric coatings are generally considered to be required. Herein, an alternative approach for the cell sheet harvesting and rapid release on demand is reported, circumventing the use of thermoresponsive materials. This approach is based on the end-group biofunctionalization of non-thermoresponsive and antifouling poly(2-hydroxyethyl methacrylate) (p(HEMA)) brushes with cell-adhesive peptide motifs. While the nonfunctionalized p(HEMA) surfaces are cell-repellant, ligation of cell-signaling ligand enables extensive attachment and proliferation of NIH 3T3 fibroblasts until the formation of a confluent cell layer. Remarkably, the formed cell sheets can be released from the surfaces by gentle rinsing with cell-culture medium. The release of the cells is found to be facilitated by low surface density of cell-adhesive peptides, as confirmed by X-ray photoelectron spectroscopy. Additionally, the developed system affords possibility for repeated cell seeding, proliferation, and release on previously used substrates without any additional pretreatment steps. This new approach represents an alternative to thermally triggered cell-sheet harvesting platforms, offering possibility of capture and proliferation of various rare cell lines via appropriate selection of the cell-adhesive ligand.
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Affiliation(s)
- Anna Schulte
- Physical Chemistry I and Research Center of Micro and Nanochemistry and Engineering (Cµ), Department of Chemistry and Biology University of Siegen, Adolf-Reichwein-Str. 2, 57076, Siegen, Germany
| | - Andres de Los Santos Pereira
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky sq. 2, Prague, 162 06, Czech Republic
| | - Robert Pola
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky sq. 2, Prague, 162 06, Czech Republic
| | - Ognen Pop-Georgievski
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky sq. 2, Prague, 162 06, Czech Republic
| | - Siyu Jiang
- Physical Chemistry I and Research Center of Micro and Nanochemistry and Engineering (Cµ), Department of Chemistry and Biology University of Siegen, Adolf-Reichwein-Str. 2, 57076, Siegen, Germany
| | - Iryna Romanenko
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky sq. 2, Prague, 162 06, Czech Republic
| | - Manisha Singh
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky sq. 2, Prague, 162 06, Czech Republic
| | - Zdeňka Sedláková
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky sq. 2, Prague, 162 06, Czech Republic
| | - Holger Schönherr
- Physical Chemistry I and Research Center of Micro and Nanochemistry and Engineering (Cµ), Department of Chemistry and Biology University of Siegen, Adolf-Reichwein-Str. 2, 57076, Siegen, Germany
| | - Rafał Poręba
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky sq. 2, Prague, 162 06, Czech Republic
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12
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Chambon L, Das M, Vasilaki E, Petekidis G, Vamvakaki M. Colloidal Rod-Like Particles with Temperature-Driven Tunable Interactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:13674-13685. [PMID: 36263911 DOI: 10.1021/acs.langmuir.2c01716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Temperature-sensitive rod-like colloidal particles were synthesized by grafting a temperature-responsive polymer, poly(2-(dimethylamino)ethyl methacrylate) (PDMA), on the surface of high aspect ratio silica rods by surface-initiated atom transfer radical polymerization. The stability of the grafted polymer on the surface of the particles in aqueous solutions was found to deteriorate with time, leading to a gradual decrease of the polymer content of the hybrid colloids, which was attributed to the mechanically activated hydrolysis of the labile bonds at the polymer-silica interface. The polymer degrafting was significantly suppressed by first growing a hydrophobic poly(methyl methacrylate) block onto the particle surface to act as a barrier layer for the penetration of water molecules at the polymer-particle interface, followed by chain-extension with the hydrophilic PDMA chains. Dynamic light scattering, microscopy, and rheological measurements revealed that the PDMA block conferred a temperature-responsive behavior to the rod-like particles, which formed aggregates at temperatures above the lower critical solution temperature (LCST) of the polymer. However, in contrast to their spherical counterparts, the polymer-grafted rod-like particles did not exhibit complete thermo-reversibility upon lowering the solution temperature below the LCST of PDMA, which was reflected by different values of the diffusion coefficient for the heating and cooling cycles, indicating an irreversible rod particle aggregation upon increasing the temperature.
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Affiliation(s)
- Lucille Chambon
- Department of Materials Science and Technology, University of Crete, 700 13Heraklion, Crete, Greece
- Institute of Electronic Structure and Laser, Foundation for Research and Technology─Hellas, 700 13Heraklion, Crete, Greece
| | - Mohan Das
- Department of Materials Science and Technology, University of Crete, 700 13Heraklion, Crete, Greece
- Institute of Electronic Structure and Laser, Foundation for Research and Technology─Hellas, 700 13Heraklion, Crete, Greece
| | - Evangelia Vasilaki
- Department of Materials Science and Technology, University of Crete, 700 13Heraklion, Crete, Greece
- Institute of Electronic Structure and Laser, Foundation for Research and Technology─Hellas, 700 13Heraklion, Crete, Greece
| | - George Petekidis
- Department of Materials Science and Technology, University of Crete, 700 13Heraklion, Crete, Greece
- Institute of Electronic Structure and Laser, Foundation for Research and Technology─Hellas, 700 13Heraklion, Crete, Greece
| | - Maria Vamvakaki
- Department of Materials Science and Technology, University of Crete, 700 13Heraklion, Crete, Greece
- Institute of Electronic Structure and Laser, Foundation for Research and Technology─Hellas, 700 13Heraklion, Crete, Greece
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13
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Wang F, Liu W, Lu R, Huang JH, Zuo B, Wang X. Entropy-Enhanced Mechanochemical Activation for Thermal Degrafting of Surface-Tethered Dry Polystyrene Brushes. ACS Macro Lett 2022; 11:1041-1048. [PMID: 35920565 DOI: 10.1021/acsmacrolett.2c00263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Dry polymer brushes have attracted great attention because of their potential utility in regulating interface properties. However, it is still unknown whether dry polymer brushes will exhibit degrafting behavior as a result of thermal annealing. Herein, a study of the conformational entropy effect on thermal degrafting of dry polystyrene (PS) brushes is presented. For PS brushes with an initial grafting density (σpini) of 0.61 nm-2, degrafting behavior was observed at 393 K, and the equilibrium σp was approximately 0.14 nm-2 at 413 K. However, for brushes with σpini ≤ 0.14 nm-2, thermal degrafting was not observed even if the temperature was increased to 453 K. Furthermore, we found that the degrafting rate was faster for PS brushes with higher σpini and higher molecular weights when σpini > 0.14 nm-2. Our findings confirmed that degrafting is a mechanochemical activation process driven by tension imposed on bonds that anchor the chains to the surface, and the process is amplified by conformational entropy.
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Affiliation(s)
- Fengliang Wang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Wenqing Liu
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Rongxing Lu
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jian-Hua Huang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Biao Zuo
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xinping Wang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
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14
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Park K, Kim S, Jo Y, Park J, Kim I, Hwang S, Lee Y, Kim SY, Seo J. Lubricant skin on diverse biomaterials with complex shapes via polydopamine-mediated surface functionalization for biomedical applications. Bioact Mater 2022; 25:555-568. [PMID: 37056251 PMCID: PMC10088055 DOI: 10.1016/j.bioactmat.2022.07.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 07/08/2022] [Accepted: 07/17/2022] [Indexed: 12/28/2022] Open
Abstract
Implantable biomedical devices require an anti-biofouling, mechanically robust, low friction surface for a prolonged lifespan and improved performance. However, there exist no methods that could provide uniform and effective coatings for medical devices with complex shapes and materials to prevent immune-related side effects and thrombosis when they encounter biological tissues. Here, we report a lubricant skin (L-skin), a coating method based on the application of thin layers of bio-adhesive and lubricant-swellable perfluoropolymer that impart anti-biofouling, frictionless, robust, and heat-mediated self-healing properties. We demonstrate biocompatible, mechanically robust, and sterilization-safe L-skin in applications of bioprinting, microfluidics, catheter, and long and narrow medical tubing. We envision that diverse applications of L-skin improve device longevity, as well as anti-biofouling attributes in biomedical devices with complex shapes and material compositions.
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Affiliation(s)
- Kijun Park
- School of Electronic and Electronic Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Seunghoi Kim
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technologies, Seoul, 02792, Republic of Korea
| | - Yejin Jo
- School of Electronic and Electronic Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jae Park
- School of Electronic and Electronic Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Inwoo Kim
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technologies, Seoul, 02792, Republic of Korea
| | - Sooyoung Hwang
- School of Electronic and Electronic Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Yeontaek Lee
- School of Electronic and Electronic Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - So Yeon Kim
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technologies, Seoul, 02792, Republic of Korea
| | - Jungmok Seo
- School of Electronic and Electronic Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Corresponding author.
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15
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Aktas Eken G, Ober CK. Strong Polyelectrolyte Brushes via Alternating Copolymers of Styrene and Maleimides: Synthesis, Properties, and Stability. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00647] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Gozde Aktas Eken
- Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Christopher K. Ober
- Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States
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16
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Ritsema van Eck G, Chiappisi L, de Beer S. Fundamentals and Applications of Polymer Brushes in Air. ACS APPLIED POLYMER MATERIALS 2022; 4:3062-3087. [PMID: 35601464 PMCID: PMC9112284 DOI: 10.1021/acsapm.1c01615] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 01/03/2022] [Indexed: 05/22/2023]
Abstract
For several decades, high-density, end-tethered polymers, forming so-called polymer brushes, have inspired scientists to understand their properties and to translate them to applications. While earlier research focused on polymer brushes in liquids, it was recently recognized that these brushes can find application in air as well. In this review, we report on recent progress in unraveling fundamental concepts of brushes in air, such as their vapor-swelling and solvent partitioning. Moreover, we provide an overview of the plethora of applications in air (e.g., in sensing, separations or smart adhesives) where brushes can be key components. To conclude, we provide an outlook by identifying open questions and issues that, when solved, will pave the way for the large scale application of brushes in air.
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Affiliation(s)
- Guido
C. Ritsema van Eck
- Sustainable
Polymer Chemistry Group, Department of Molecules & Materials,
MESA+ Institute for Nanotechnology, University
of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Leonardo Chiappisi
- Institut
Max von Laue - Paul Langevin, 71 avenue des Martyrs, 38042 Grenoble, France
| | - Sissi de Beer
- Sustainable
Polymer Chemistry Group, Department of Molecules & Materials,
MESA+ Institute for Nanotechnology, University
of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
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17
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Witzdam L, Meurer YL, Garay-Sarmiento M, Vorobii M, Söder D, Quandt J, Haraszti T, Rodriguez-Emmenegger C. Brush-Like Interface on Surface-Attached Hydrogels Repels Proteins and Bacteria. Macromol Biosci 2022; 22:e2200025. [PMID: 35170202 DOI: 10.1002/mabi.202200025] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/07/2022] [Indexed: 11/10/2022]
Abstract
Interfacing artificial materials with biological tissues remains a challenge. The direct contact of their surface with the biological milieu results in multiscale interactions, in which biomacromolecules adsorb and act as transducers mediating the interactions with cells and tissues. So far, only antifouling polymer brushes have been able to conceal the surface of synthetic materials. However, their complex synthesis has precluded their translation to applications. Here, we show that ultra-thin surface-attached hydrogel coatings of N-(2-hydroxypropyl) methacrylamide (HPMA) and carboxybetaine methacrylamide (CBMAA) provided the same level of protection as brushes. In spite of being readily applicable, these coatings prevented the fouling from whole blood plasma and provided a barrier to the adhesion of Gram positive and negative bacteria. The analysis of the components of the surface free energy and nanoindentation experiments revealed that the excellent antifouling properties stem from the strong surface hydrophilicity and the presence of a brush-like structure at the water interface. Moreover, these coatings could be functionalized to achieve antimicrobial activity while remaining stealth and non-cytotoxic to eukaryotic cells. Such level of performance was previously only achieved with brushes. Thus, we anticipate that this readily applicable strategy is a promising route to enhance the biocompatibility of real biomedical devices. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Lena Witzdam
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, Aachen, 52074, Germany.,Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, Aachen, 52074, Germany
| | - Yannick L Meurer
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, Aachen, 52074, Germany.,Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, Aachen, 52074, Germany.,Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 103, Freiburg im Breisgau, 79110, Germany
| | - Manuela Garay-Sarmiento
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, Aachen, 52074, Germany.,Chair of Biotechnology, RWTH Aachen University, Worringerweg 3, Aachen, 52074, Germany
| | - Mariia Vorobii
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, Aachen, 52074, Germany.,Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, Aachen, 52074, Germany
| | - Dominik Söder
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, Aachen, 52074, Germany.,Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, Aachen, 52074, Germany
| | - Jonas Quandt
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, Aachen, 52074, Germany.,Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, Aachen, 52074, Germany
| | - Tamás Haraszti
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, Aachen, 52074, Germany
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18
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Ding Z, Chen C, Yu Y, de Beer S. Synthetic strategies to enhance the long-term stability of polymer brush coatings. J Mater Chem B 2022; 10:2430-2443. [DOI: 10.1039/d1tb02605d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High-density, end-anchored macromolecules that form so-called polymer brushes are popular components of bio-inspired surface coatings. In a bio-memetic approach, they have been utilized to reduce friction, repel contamination and control...
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19
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Qiu H, Feng K, Gapeeva A, Meurisch K, Kaps S, Li X, Yu L, Mishra YK, Adelung R, Baum M. Functional Polymer Materials for Modern Marine Biofouling Control. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101516] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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20
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Romio M, Grob B, Trachsel L, Mattarei A, Morgese G, Ramakrishna SN, Niccolai F, Guazzelli E, Paradisi C, Martinelli E, Spencer ND, Benetti EM. Dispersity within Brushes Plays a Major Role in Determining Their Interfacial Properties: The Case of Oligoxazoline-Based Graft Polymers. J Am Chem Soc 2021; 143:19067-19077. [PMID: 34738797 PMCID: PMC8769490 DOI: 10.1021/jacs.1c08383] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Indexed: 12/14/2022]
Abstract
Many synthetic polymers used to form polymer-brush films feature a main backbone with functional, oligomeric side chains. While the structure of such graft polymers mimics biomacromolecules to an extent, it lacks the monodispersity and structural purity present in nature. Here we demonstrate that side-chain heterogeneity within graft polymers significantly influences hydration and the occurrence of hydrophobic interactions in the subsequently formed brushes and consequently impacts fundamental interfacial properties. This is demonstrated for the case of poly(methacrylate)s (PMAs) presenting oligomeric side chains of different length (n) and dispersity. A precise tuning of brush structure was achieved by first synthesizing oligo(2-ethyl-2-oxazoline) methacrylates (OEOXMAs) by cationic ring-opening polymerization (CROP), subsequently purifying them into discrete macromonomers with distinct values of n by column chromatography, and finally obtaining poly[oligo(2-ethyl-2-oxazoline) methacrylate]s (POEOXMAs) by reversible addition-fragmentation chain-transfer (RAFT) polymerization. Assembly of POEOXMA on Au surfaces yielded graft polymer brushes with different side-chain dispersities and lengths, whose properties were thoroughly investigated by a combination of variable angle spectroscopic ellipsometry (VASE), quartz crystal microbalance with dissipation (QCMD), and atomic force microscopy (AFM) methods. Side-chain dispersity, or dispersity within brushes, leads to assemblies that are more hydrated, less adhesive, and more lubricious and biopassive compared to analogous films obtained from graft polymers characterized by a homogeneous structure.
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Affiliation(s)
- Matteo Romio
- Biointerfaces
Lab, Swiss Federal Laboratories for Materials
Science and Technology (Empa), Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
- Laboratory
for Surface Science and Technology, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
| | - Benjamin Grob
- Laboratory
for Surface Science and Technology, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
| | - Lucca Trachsel
- George
& Josephine Butler Polymer Research Laboratory, Department of
Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Andrea Mattarei
- Department
of Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo 5, 35131 Padova, Italy
| | - Giulia Morgese
- Institute
of Materials and Process Engineering (IMPE), School of Engineering
(SoE), Zürich University of Applied
Sciences (ZHAW), Technikumstrasse 9, 8401 Winterthur, Switzerland
| | - Shivaprakash N. Ramakrishna
- Soft Materials
and Interfaces, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg
5, 8093 Zürich, Switzerland
| | - Francesca Niccolai
- Department
of Chemistry and Industrial Chemistry, University
of Pisa, Via Moruzzi 13, 56124 Pisa, Italy
| | - Elisa Guazzelli
- Department
of Chemistry and Industrial Chemistry, University
of Pisa, Via Moruzzi 13, 56124 Pisa, Italy
| | - Cristina Paradisi
- Department
of Chemical Sciences, University of Padova, Via Marzolo 1, 35122 Padova, Italy
| | - Elisa Martinelli
- Department
of Chemistry and Industrial Chemistry, University
of Pisa, Via Moruzzi 13, 56124 Pisa, Italy
| | - Nicholas D. Spencer
- Laboratory
for Surface Science and Technology, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
| | - Edmondo M. Benetti
- Biointerfaces
Lab, Swiss Federal Laboratories for Materials
Science and Technology (Empa), Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
- Laboratory
for Surface Science and Technology, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
- Department
of Chemical Sciences, University of Padova, Via Marzolo 1, 35122 Padova, Italy
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21
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Molecular bottlebrush with pH-responsive cleavable bonds as a unimolecular vehicle for anticancer drug delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 130:112439. [PMID: 34702524 DOI: 10.1016/j.msec.2021.112439] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/11/2021] [Accepted: 09/14/2021] [Indexed: 11/24/2022]
Abstract
Drug delivery systems with targeted and smart properties have emerged as an efficient strategy to overcome the challenges of cancer chemotherapy such as toxic side effects and the development of multidrug resistance. In this study, a biocompatible bottlebrush polymer poly((3-(2-bromo-2-methylpropionate)propyldimethylsilyloxy)ethyl methacrylate)-graft-poly(2-methacryloyloxyethyl phosphorylcholine) P(BIBS-EMA)-g-PMPC with pH-responsive silanol cleavable bond was designed and developed for delivery of doxorubicin. A549 cell line of human lung carcinoma was tested. The synthesized bottlebrush polymer was analyzed and characterized via Fourier transform infrared spectroscopy, FTIR, nuclear magnetic resonance spectroscopy, 1H NMR, gel permeation chromatography, GPC, dynamic laser light scattering, DLS, and static laser light scattering, SLS, techniques. The cleavage process was also precisely studied to confirm the pH-responsiveness of such bottlebrush polymers. In vitro loading and release studies of doxorubicin as a model drug were examined and the results showed a pH-dependent release manner with a twice higher release rate under cancerous tissue conditions compared to standard physiological conditions. MTT cytotoxicity assay was also performed to prove the biocompatibility of the designed polymeric platform on healthy human cells. Due to the presence of bio-inspired poly(2-methacryloyloxyethyl phosphorylcholine) side chains in the prepared bottlebrush polymer, the formed polymer-drug complex could also exhibit effective internalization into tumor cells. These facts further support the potential use of this carrier in drug delivery applications and for further in vivo studies.
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22
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Russo MJ, Han M, Desroches PE, Manasa CS, Dennaoui J, Quigley AF, Kapsa RMI, Moulton SE, Guijt RM, Greene GW, Silva SM. Antifouling Strategies for Electrochemical Biosensing: Mechanisms and Performance toward Point of Care Based Diagnostic Applications. ACS Sens 2021; 6:1482-1507. [PMID: 33765383 DOI: 10.1021/acssensors.1c00390] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Although there exist numerous established laboratory-based technologies for sample diagnostics and analyte detection, many medical and forensic science applications require point of care based platforms for rapid on-the-spot sample analysis. Electrochemical biosensors provide a promising avenue for such applications due to the portability and functional simplicity of the technology. However, the ability to develop such platforms with the high sensitivity and selectivity required for analysis of low analyte concentrations in complex biological samples remains a paramount issue in the field of biosensing. Nonspecific adsorption, or fouling, at the electrode interface via the innumerable biomolecules present in these sample types (i.e., serum, urine, blood/plasma, and saliva) can drastically obstruct electrochemical performance, increasing background "noise" and diminishing both the electrochemical signal magnitude and specificity of the biosensor. Consequently, this review aims to discuss strategies and concepts used throughout the literature to prevent electrode surface fouling in biosensors and to communicate the nature of the antifouling mechanisms by which they operate. Evaluation of each antifouling strategy is focused primarily on the fabrication method, experimental technique, sample composition, and electrochemical performance of each technology highlighting the overall feasibility of the platform for point of care based diagnostic/detection applications.
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Affiliation(s)
- Matthew J. Russo
- Institute for Frontier Materials and ARC Centre of Excellence for Electromaterials Science, Deakin University, Melbourne, Victoria 3216, Australia
- The Aikenhead Centre for Medical Discovery, St Vincent’s Hospital Melbourne, Melbourne, Victoria 3065, Australia
| | - Mingyu Han
- Institute for Frontier Materials and ARC Centre of Excellence for Electromaterials Science, Deakin University, Melbourne, Victoria 3216, Australia
| | - Pauline E. Desroches
- Institute for Frontier Materials and ARC Centre of Excellence for Electromaterials Science, Deakin University, Melbourne, Victoria 3216, Australia
- The Aikenhead Centre for Medical Discovery, St Vincent’s Hospital Melbourne, Melbourne, Victoria 3065, Australia
| | - Clayton S. Manasa
- ARC Centre of Excellence for Electromaterials Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
- The Aikenhead Centre for Medical Discovery, St Vincent’s Hospital Melbourne, Melbourne, Victoria 3065, Australia
| | - Jessair Dennaoui
- School of Electrical and Biomedical Engineering, RMIT University, Melbourne, Victoria 3000, Australia
- The Aikenhead Centre for Medical Discovery, St Vincent’s Hospital Melbourne, Melbourne, Victoria 3065, Australia
| | - Anita F. Quigley
- School of Electrical and Biomedical Engineering, RMIT University, Melbourne, Victoria 3000, Australia
- The Aikenhead Centre for Medical Discovery, St Vincent’s Hospital Melbourne, Melbourne, Victoria 3065, Australia
| | - Robert M. I. Kapsa
- School of Electrical and Biomedical Engineering, RMIT University, Melbourne, Victoria 3000, Australia
- The Aikenhead Centre for Medical Discovery, St Vincent’s Hospital Melbourne, Melbourne, Victoria 3065, Australia
| | - Simon E. Moulton
- ARC Centre of Excellence for Electromaterials Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
- Iverson Health Innovation Research Institute, Swinburne University of Technology, Victoria 3122, Australia
- Centre for Regional and Rural Futures, Deakin University, Geelong, Victoria 3220, Australia
| | - Rosanne M. Guijt
- Centre for Regional and Rural Futures, Deakin University, Geelong, Victoria 3220, Australia
| | - George W. Greene
- Institute for Frontier Materials and ARC Centre of Excellence for Electromaterials Science, Deakin University, Melbourne, Victoria 3216, Australia
| | - Saimon Moraes Silva
- ARC Centre of Excellence for Electromaterials Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
- The Aikenhead Centre for Medical Discovery, St Vincent’s Hospital Melbourne, Melbourne, Victoria 3065, Australia
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23
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Yu Y, Brió Pérez M, Cao C, de Beer S. Switching (bio-) adhesion and friction in liquid by stimulus responsive polymer coatings. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110298] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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Krutty JD, Koesser K, Schwartz S, Yun J, Murphy WL, Gopalan P. Xeno-Free Bioreactor Culture of Human Mesenchymal Stromal Cells on Chemically Defined Microcarriers. ACS Biomater Sci Eng 2021; 7:617-625. [PMID: 33448784 DOI: 10.1021/acsbiomaterials.0c00663] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Human mesenchymal stromal cells (hMSC), also called mesenchymal stem cells, are adult cells that have demonstrated their potential in therapeutic applications, highlighted by their ability to differentiate down different lineages, modulate the immune system, and produce biologics. There is a pressing need for scalable culture systems for hMSC due to the large number of cells needed for clinical applications. Most current methods for expanding hMSC fail to provide a reproducible cell product in clinically required cell numbers without the use of serum-containing media or harsh enzymes. In this work, we apply a tailorable, thin, synthetic polymer coating-poly(poly(ethylene glycol) methyl ether methacrylate-ran-vinyl dimethyl azlactone-ran-glycidyl methacrylate) (P(PEGMEMA-r-VDM-r-GMA), PVG)-to the surface of commercially available polystyrene (PS) microcarriers to create chemically defined three-dimensional (3D) surfaces for large-scale cell expansion. These chemically defined microcarriers provide a reproducible surface that does not rely on the adsorption of xenogeneic serum proteins to mediate cell adhesion, enabling their use in xeno-free culture systems. Specifically, this work demonstrates the improved adhesion of hMSC to coated microcarriers over PS microcarriers in xeno-free media and describes their use in a readily scalable, bioreactor-based culture system. Additionally, these surfaces resist the adsorption of media-borne and cell-produced proteins, which result in integrin-mediated cell adhesion throughout the culture period. This feature allows the cells to be efficiently passaged from the microcarrier using a chemical chelating agent (ethylenediaminetetraacetic acid (EDTA)) in the absence of cleavage enzymes, an improvement over other microcarrier products in the field. Bioreactor culture of hMSC on these microcarriers enabled the production of hMSC over 4 days from a scalable, xeno-free environment.
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Affiliation(s)
- John D Krutty
- Department of Materials Science and Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States
| | - Kevin Koesser
- Department of Biomedical Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States
| | - Stephen Schwartz
- Department of Biomedical Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States
| | - Junsu Yun
- Department of Materials Science and Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States
| | - William L Murphy
- Department of Materials Science and Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States.,Department of Biomedical Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States.,Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States
| | - Padma Gopalan
- Department of Materials Science and Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States.,Department of Biomedical Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States.,Department of Chemistry, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States
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25
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Mousavi M, Ghaleh H, Jalili K, Abbasi F. Multi-layer PDMS films having antifouling property for biomedical applications. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 32:678-693. [PMID: 33250001 DOI: 10.1080/09205063.2020.1856300] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Poly(dimethylsiloxane) (PDMS) elastomer is now a well-known material for packaging implantable biomedical micro-devices owing to unique bulk properties such as biocompatibility, low toxicity, excellent rheological properties, good flexibility, and mechanical stability. Despite the desirable bulk characteristics, PDMS is generally regarded as a high-flux material for oxygen and water vapor to penetrate compared with other polymeric barrier materials, which is related to the defect-induced penetration through the packaging coating prepared by the traditional deposition techniques. Besides, its hydrophobic nature causes serious fouling problems and limits the practical application of PDMS-based devices. In this work, the performance of silicone thin films as a packaging layer was improved by the fabrication of the roller-casted multiple thin layers to minimize a defect-induced failure. To confer hydrophilicity and cell fouling resistance, high-density and well-defined poly(oligo(ethylene glycol) methacrylate) (POEGMA) brushes were tethered via the surface-initiated atom transfer radical polymerization (SI-ATRP) technique on the roller-casted multiple thin PDMS layers. The characteristics of fabricated substrates were determined by static water contact angle measurement, X-ray photoelectron spectroscopy, and attenuated total reflection-Fourier transform infrared spectroscopy. In vitro cell behavior of POEGMA-grafted PDMS substrates was evaluated to examine cell-fouling resistance.
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Affiliation(s)
- M Mousavi
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran.,Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
| | - H Ghaleh
- Department of Polymer Science and Engineering, University of Bonab, Bonab, Iran
| | - K Jalili
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran.,Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
| | - F Abbasi
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran.,Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
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26
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Laus M, Chiarcos R, Gianotti V, Antonioli D, Sparnacci K, Munaò G, Milano G, De Nicola A, Perego M. Evidence of Mechanochemical Control in “Grafting to” Reactions of Hydroxy-Terminated Statistical Copolymers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c02142] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Michele Laus
- Dipartimento di Scienze e Innovazione Tecnologica (DISIT), Universitá del Piemonte Orientale “A. Avogadro”, Viale T. Michel 11, Alessandria 15121, Italy
| | - Riccardo Chiarcos
- Dipartimento di Scienze e Innovazione Tecnologica (DISIT), Universitá del Piemonte Orientale “A. Avogadro”, Viale T. Michel 11, Alessandria 15121, Italy
| | - Valentina Gianotti
- Dipartimento di Scienze e Innovazione Tecnologica (DISIT), Universitá del Piemonte Orientale “A. Avogadro”, Viale T. Michel 11, Alessandria 15121, Italy
| | - Diego Antonioli
- Dipartimento di Scienze e Innovazione Tecnologica (DISIT), Universitá del Piemonte Orientale “A. Avogadro”, Viale T. Michel 11, Alessandria 15121, Italy
| | - Katia Sparnacci
- Dipartimento di Scienze e Innovazione Tecnologica (DISIT), Universitá del Piemonte Orientale “A. Avogadro”, Viale T. Michel 11, Alessandria 15121, Italy
| | - Gianmarco Munaò
- Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università degli Studi di Messina, Viale F. Stagno d’Alcontres 31, Messina 98166, Italy
| | - Giuseppe Milano
- Department of Organic Materials Science, Yamagata University, 4-3-16 Jonan Yonezawa, Yamagata-ken 992-8510, Japan
| | - Antonio De Nicola
- Department of Organic Materials Science, Yamagata University, 4-3-16 Jonan Yonezawa, Yamagata-ken 992-8510, Japan
| | - Michele Perego
- CNR-IMM, Unit of Agrate Brianza, Agrate Brianza 20864, Italy
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27
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Lou D, Hou Z, Yang H, Liu Y, Wang T. Antifouling Membranes Prepared from Polyethersulfone Grafted with Poly(ethylene glycol) Methacrylate by Radiation-Induced Copolymerization in Homogeneous Solution. ACS OMEGA 2020; 5:27094-27102. [PMID: 33134669 PMCID: PMC7594002 DOI: 10.1021/acsomega.0c02439] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 07/31/2020] [Indexed: 06/11/2023]
Abstract
To synthesize evenly grafted copolymers, gamma radiation of homogeneous solutions was employed to graft poly(ethylene glycol) methacrylate (PEGMA) onto polyethersulfone (PES). The grafting was verified by Fourier transform infrared spectroscopy, and the degrees of grafting (DGs) were determined by elementary analysis. The PES-g-polyPEGMA copolymers with different DGs were obtained by changing the monomer concentration. Membranes were cast from pristine PES, PES/PEG blends, and PES-g-polyPEGMA with different DGs, respectively, via nonsolvent-induced phase separation. Results from water contact angle measurements and scanning electron microscopy analysis indicated that increasing DGs led to PES-g-polyPEGMA membranes with increasing hydrophilicity and porousness. Filtration experimental results showed that increasing DGs without adding pore-forming agents caused PES-g-polyPEGMA membranes with higher permeability. Compared with PES/PEG membranes with analogous permeation characteristics, in which PEG is added as a pore-forming agent, PES-g-polyPEGMA membranes exhibited superior antifouling properties.
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Affiliation(s)
- Dan Lou
- Department
of Polymer Materials, College of Materials Science and Engineering, Shanghai University (SHU), Shanghai 200444, China
- Shanghai
Institute of Applied Physics, Chinese Academy
of Sciences, Shanghai 201800, China
| | - Zhengchi Hou
- Shanghai
Institute of Applied Physics, Chinese Academy
of Sciences, Shanghai 201800, China
- Shanghai
Advanced Research Institute, Chinese Academy
of Sciences, 239 Zhangheng
Road, Pudong New District, Shanghai 201204, China
| | - Haijun Yang
- Shanghai
Institute of Applied Physics, Chinese Academy
of Sciences, Shanghai 201800, China
- Shanghai
Advanced Research Institute, Chinese Academy
of Sciences, 239 Zhangheng
Road, Pudong New District, Shanghai 201204, China
| | - Yinfeng Liu
- Department
of Polymer Materials, College of Materials Science and Engineering, Shanghai University (SHU), Shanghai 200444, China
| | - Ting Wang
- Shanghai
Institute of Applied Physics, Chinese Academy
of Sciences, Shanghai 201800, China
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28
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Czeslik C, Wittemann A. Adsorption mechanism, secondary structure and local distribution of proteins at polyelectrolyte brushes. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-019-04590-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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29
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Seidi F, Zhao W, Xiao H, Jin Y, Saeb MR, Zhao C. Radical polymerization as a versatile tool for surface grafting of thin hydrogel films. Polym Chem 2020. [DOI: 10.1039/d0py00787k] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The surface of solid substrates is the main part that interacts with the environment.
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Affiliation(s)
- Farzad Seidi
- Provincial Key Lab of Pulp & Paper Sci and Tech
- and Joint International Research Lab of Lignocellulosic Functional Materials
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Weifeng Zhao
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Huining Xiao
- Department of Chemical Engineering
- University of New Brunswick
- Fredericton
- E3B 5A3 Canada
| | - Yongcan Jin
- Provincial Key Lab of Pulp & Paper Sci and Tech
- and Joint International Research Lab of Lignocellulosic Functional Materials
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Mohammad Reza Saeb
- Department of Resin and Additives
- Institute for Color Science and Technology
- Tehran
- Iran
| | - Changsheng Zhao
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
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30
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Lorusso E, Ali W, Leniart M, Gebert B, Oberthür M, Gutmann JS. Tuning the Density of Zwitterionic Polymer Brushes on PET Fabrics by Aminolysis: Effect on Antifouling Performances. Polymers (Basel) 2019; 12:E6. [PMID: 31861436 PMCID: PMC7023513 DOI: 10.3390/polym12010006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 12/06/2019] [Accepted: 12/13/2019] [Indexed: 01/05/2023] Open
Abstract
Here, we synthesize zwitterionic polymer brushes on polyester fabrics by atom transfer radical polymerization (ATRP) after a prefunctionalization step involving an aminolysis reaction with ethylenediamine. Aminolysis is an easy method to achieve homogeneous distributions of functional groups on polyester fibers (PET) fabrics. Varying the polymerization time and the prefunctionalization conditions of the reaction, it is possible to tune the amount of water retained over the surface and study its effect on protein adhesion. This study revealed that the polymerization time plays a major role in preventing protein adhesion on the PET surface.
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Affiliation(s)
- Emanuela Lorusso
- Deutsches Textilforschungszentrum Nord-West ÖP GmbH, 47798 Krefeld, Germany;
- Department of Physical Chemistry and Center of Nanointegration (CENIDE), University Duisburg-Essen, 45141 Essen, Germany;
| | - Wael Ali
- Department of Physical Chemistry and Center of Nanointegration (CENIDE), University Duisburg-Essen, 45141 Essen, Germany;
- Deutsches Textilforschungszentrum Nord-West gGmbH, 47798 Krefeld, Germany; (M.L.); (B.G.)
| | - Michael Leniart
- Deutsches Textilforschungszentrum Nord-West gGmbH, 47798 Krefeld, Germany; (M.L.); (B.G.)
| | - Beate Gebert
- Deutsches Textilforschungszentrum Nord-West gGmbH, 47798 Krefeld, Germany; (M.L.); (B.G.)
| | - Markus Oberthür
- Department of Design, Hochschule für Angewandte Wissenschaften (HAW) Hamburg, 22087 Hamburg, Germany;
| | - Jochen S. Gutmann
- Deutsches Textilforschungszentrum Nord-West ÖP GmbH, 47798 Krefeld, Germany;
- Department of Physical Chemistry and Center of Nanointegration (CENIDE), University Duisburg-Essen, 45141 Essen, Germany;
- Deutsches Textilforschungszentrum Nord-West gGmbH, 47798 Krefeld, Germany; (M.L.); (B.G.)
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31
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Yu Y, Cirelli M, Li P, Ding Z, Yin Y, Yuan Y, de Beer S, Vancso GJ, Zhang S. Enhanced Stability of Poly(3-sulfopropyl methacrylate potassium) Brushes Coated on Artificial Implants in Combatting Bacterial Infections. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03980] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yunlong Yu
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Marco Cirelli
- Materials Science and Technology of Polymers and MESA+ Research Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Pengfei Li
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Zhichao Ding
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Yue Yin
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Yucheng Yuan
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Sissi de Beer
- Materials Science and Technology of Polymers and MESA+ Research Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - G. Julius Vancso
- Materials Science and Technology of Polymers and MESA+ Research Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Shiyong Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
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32
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Ko Y, Genzer J. Spontaneous Degrafting of Weak and Strong Polycationic Brushes in Aqueous Buffer Solutions. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01362] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Yeongun Ko
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Jan Genzer
- Department of Chemical and 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, Sapporo 060-0808, Japan
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33
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Griffo A, Liu Y, Mahlberg R, Alakomi HL, Johansson LS, Milani R. Design and Testing of a Bending-Resistant Transparent Nanocoating for Optoacoustic Cochlear Implants. ChemistryOpen 2019; 8:1100-1108. [PMID: 31406657 PMCID: PMC6682933 DOI: 10.1002/open.201900172] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Indexed: 12/25/2022] Open
Abstract
A nanosized coating was designed to reduce fouling on the surface of a new type of cochlear implant relying on optoacoustic stimulation. This kind of device imposes novel design principles for antifouling coatings, such as optical transparency and resistance to significant constant bending. To reach this goal we deposited on poly(dimethylsiloxane) a PEO-based layer with negligible thickness compared to the curvature radius of the cochlea. Its antifouling performance was monitored upon storage by quartz crystal microbalance, and its resistance upon bending was tested by fluorescence microscopy under geometrical constraints similar to those of implantation. The coating displayed excellent antifouling features and good stability, and proved suitable for further testing in real-environment conditions.
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Affiliation(s)
- Alessandra Griffo
- VTT Technical Research Centre of Finland Ltd. P.O. Box 1000 FI-02044VTT Espoo Finland.,Department of Bioproducts and Biosystems Aalto University P.O. Box 16100 FI-00076Aalto Espoo Finland
| | - Yingying Liu
- VTT Technical Research Centre of Finland Ltd. P.O. Box 1000 FI-02044VTT Espoo Finland
| | - Riitta Mahlberg
- VTT Technical Research Centre of Finland Ltd. P.O. Box 1000 FI-02044VTT Espoo Finland
| | - Hanna-L Alakomi
- VTT Technical Research Centre of Finland Ltd. P.O. Box 1000 FI-02044VTT Espoo Finland
| | - Leena-S Johansson
- Department of Bioproducts and Biosystems Aalto University P.O. Box 16100 FI-00076Aalto Espoo Finland
| | - Roberto Milani
- VTT Technical Research Centre of Finland Ltd. P.O. Box 1000 FI-02044VTT Espoo Finland
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34
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Sun M, Qiu H, Su C, Shi X, Wang Z, Ye Y, Zhu Y. Solvent-Free Graft-From Polymerization of Polyvinylpyrrolidone Imparting Ultralow Bacterial Fouling and Improved Biocompatibility. ACS APPLIED BIO MATERIALS 2019; 2:3983-3991. [DOI: 10.1021/acsabm.9b00529] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Min Sun
- Ningbo Key Laboratory of Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
| | - Haofeng Qiu
- The Medical School of Ningbo University, Ningbo University, Ningbo 315211, P. R. China
| | - Cuicui Su
- Ningbo Key Laboratory of Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
| | - Xiao Shi
- Ningbo Key Laboratory of Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
| | - Zhijie Wang
- Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, P. R. China
| | - Yumin Ye
- Ningbo Key Laboratory of Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
- State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yabin Zhu
- The Medical School of Ningbo University, Ningbo University, Ningbo 315211, P. R. China
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35
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Wang J, Klok H. Swelling‐Induced Chain Stretching Enhances Hydrolytic Degrafting of Hydrophobic Polymer Brushes in Organic Media. Angew Chem Int Ed Engl 2019; 58:9989-9993. [DOI: 10.1002/anie.201904436] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/15/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Jian Wang
- École Polytechnique Fédérale de Lausanne (EPFL)Institut des Matériaux and Institut des Sciences et Ingénierie ChimiquesLaboratoire des Polymères Bâtiment MXD, Station 12 1015 Lausanne Switzerland
| | - Harm‐Anton Klok
- École Polytechnique Fédérale de Lausanne (EPFL)Institut des Matériaux and Institut des Sciences et Ingénierie ChimiquesLaboratoire des Polymères Bâtiment MXD, Station 12 1015 Lausanne Switzerland
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36
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Wang J, Klok H. Swelling‐Induced Chain Stretching Enhances Hydrolytic Degrafting of Hydrophobic Polymer Brushes in Organic Media. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jian Wang
- École Polytechnique Fédérale de Lausanne (EPFL)Institut des Matériaux and Institut des Sciences et Ingénierie ChimiquesLaboratoire des Polymères Bâtiment MXD, Station 12 1015 Lausanne Switzerland
| | - Harm‐Anton Klok
- École Polytechnique Fédérale de Lausanne (EPFL)Institut des Matériaux and Institut des Sciences et Ingénierie ChimiquesLaboratoire des Polymères Bâtiment MXD, Station 12 1015 Lausanne Switzerland
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37
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Messmer D, Bertran O, Kissner R, Alemán C, Schlüter AD. Main-chain scission of individual macromolecules induced by solvent swelling. Chem Sci 2019; 10:6125-6139. [PMID: 31360419 PMCID: PMC6585601 DOI: 10.1039/c9sc01639b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 05/08/2019] [Indexed: 11/21/2022] Open
Abstract
We present a comprehensive investigation of main-chain scission processes affecting peripherally charged and neutral members of a class of dendronized polymers (DPs) studied in our laboratory. In these thick, sterically highly congested macromolecules, scission occurs by exposure to solvents, in some cases at room temperature, in others requiring modest heating. Our investigations rely on gel permeation chromatography and atomic force microscopy and are supported by molecular dynamics simulations as well as by electron paramagnetic resonance spectroscopy. Strikingly, DP main-chain scission depends strongly on two factors: first the solvent, which must be highly polar to induce scission of the DPs, and second the dendritic generation g. In DPs of generations 1 ≤ g ≤ 8, scission occurs readily only for g = 5, no matter whether the polymer is charged or neutral. Much more forcing conditions are required to induce degradation in DPs of g ≠ 5. We propose solvent swelling as the cause for the main-chain scission in these individual polymer molecules, explaining in particular the strong dependence on g: g < 5 DPs resemble classical polymers and are accessible to the strongly interacting, polar solvents, whereas g > 5 DPs are essentially closed off to solvent due to their more closely colloidal character. g = 5 DPs mark the transition between these two regimes, bearing strongly sterically congested side chains which are still solvent accessible to some degree. Our results suggest that, even in the absence of structural elements which favour scission such as cross-links, solvent swelling may be a generally applicable mechanochemical trigger. This may be relevant not only for DPs, but also for other types of sterically strongly congested macromolecules.
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Affiliation(s)
- Daniel Messmer
- Polymer Chemistry , Department of Materials , ETH Zürich , Vladimir-Prelog-Weg 5 , 8093 Zürich , Switzerland . ;
| | - Oscar Bertran
- Department of Physics , EETAC , Universitat Politècnica de Catalunya , c/ Esteve Terrades, 7 , 08860 , Castelldefels , Spain
| | - Reinhard Kissner
- Laboratory of Inorganic Chemistry , Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 3 , 8093 Zürich , Switzerland
| | - Carlos Alemán
- Departament d'Enginyeria Química (EEBE) , Barcelona Research Center for Multiscale Science and Engineering , Universitat Politècnica de Catalunya , C/ Eduard Maristany, 10-14, Ed. I2 , 08019 , Barcelona , Spain
| | - A Dieter Schlüter
- Polymer Chemistry , Department of Materials , ETH Zürich , Vladimir-Prelog-Weg 5 , 8093 Zürich , Switzerland . ;
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38
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Leonardi AK, Ober CK. Polymer-Based Marine Antifouling and Fouling Release Surfaces: Strategies for Synthesis and Modification. Annu Rev Chem Biomol Eng 2019; 10:241-264. [DOI: 10.1146/annurev-chembioeng-060718-030401] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In marine industries, the accumulation of organic matter and marine organisms on ship hulls and instruments limits performance, requiring frequent maintenance and increasing fuel costs. Current coatings technology to combat this biofouling relies heavily on the use of toxic, biocide-containing paints. These pose a serious threat to marine ecosystems, affecting both target and nontarget organisms. Innovation in the design of polymers offers an excellent platform for the development of alternatives, but the creation of a broad-spectrum, nontoxic material still poses quite a hurdle for researchers. Surface chemistry, physical properties, durability, and attachment scheme have been shown to play a vital role in the construction of a successful coating. This review explores why these characteristics are important and how recent research accounts for them in the design and synthesis of new environmentally benign antifouling and fouling release materials.
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Affiliation(s)
- Amanda K. Leonardi
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA
| | - Christopher K. Ober
- Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, USA
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39
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Benetti EM, Spencer ND. Using Polymers to Impart Lubricity and Biopassivity to Surfaces: Are These Properties Linked? Helv Chim Acta 2019. [DOI: 10.1002/hlca.201900071] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Edmondo M. Benetti
- Laboratory for Surface Science and Technology, Department of MaterialsETH Zurich Vladimir-Prelog-Weg 5 CH-8093 Zurich Switzerland
| | - Nicholas D. Spencer
- Laboratory for Surface Science and Technology, Department of MaterialsETH Zurich Vladimir-Prelog-Weg 5 CH-8093 Zurich Switzerland
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40
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Zou XN, Han X, Zhang Q, Yin JJ, Chu LQ. Preparation and antibacterial activity of silver-loaded poly(oligo(ethylene glycol) methacrylate) brush. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2019; 30:756-768. [PMID: 30940009 DOI: 10.1080/09205063.2019.1603066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 03/25/2019] [Accepted: 04/01/2019] [Indexed: 06/09/2023]
Abstract
Herein, we report on a robust approach to fabricate antibacterial nanocomposite coating simply by immersing poly(oligo(ethylene glycol) methacrylate) (POEGMA) brush into a silver perchlorate solution without using any external reducing agents. The POEGMA brush of 48.3 nm in thickness is prepared via surface-initiated atom transfer radical polymerization method. Field-emission scanning electron microscope and Raman measurements indicate that silver nanoparticles of 14 ∼ 25 nm in diameter are successfully embedded into the POEGMA brush. Antibacterial activities of the resultant silver-loaded POEGMA brushes against both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus are measured by zone of inhibition and colony-counting methods, respectively. The results show that the silver-loaded POEGMA coatings exhibit enhanced antibacterial efficiency compared to bare POEGMA brush. In order to elucidate their antibacterial mechanism, silver release behaviors of these silver-loaded POEGMA brushes are monitored via inductively coupled plasma mass spectrometry.
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Affiliation(s)
- Xue-Na Zou
- a College of Chemical Engineering and Materials Science , Tianjin University of Science & Technology , TEDA , China
| | - Xiao Han
- a College of Chemical Engineering and Materials Science , Tianjin University of Science & Technology , TEDA , China
| | - Qian Zhang
- a College of Chemical Engineering and Materials Science , Tianjin University of Science & Technology , TEDA , China
| | - Jun-Jiao Yin
- a College of Chemical Engineering and Materials Science , Tianjin University of Science & Technology , TEDA , China
| | - Li-Qiang Chu
- a College of Chemical Engineering and Materials Science , Tianjin University of Science & Technology , TEDA , China
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41
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Shao Q. A computational avenue towards understanding and design of zwitterionic anti-biofouling materials. MOLECULAR SIMULATION 2019. [DOI: 10.1080/08927022.2019.1599118] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Qing Shao
- Chemical and Materials Engineering, University of Kentucky, Lexington KY, USA
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42
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Liu Y, Zhang Y, Ren B, Sun Y, He Y, Cheng F, Xu J, Zheng J. Molecular Dynamics Simulation of the Effect of Carbon Space Lengths on the Antifouling Properties of Hydroxyalkyl Acrylamides. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:3576-3584. [PMID: 30721070 DOI: 10.1021/acs.langmuir.8b04229] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Surface hydration has been proposed as the key antifouling mechanism of antifouling materials. However, molecular-level details of the structure, dynamics, and interactions of interfacial water around antifouling polymers still remain elusive. In this work, using all-atom molecular dynamics (MD) simulations, we studied four different acrylamides (AMs) for their interfacial water behaviors and their interactions with a protein, with special attention to the effect of carbon spacer lengths (CSLs) on the hydration properties of AMs. Collective MD simulation data revealed that although all four AMs displayed strong hydration, N-hydroxymethyl acrylamide (HMAA) and N-(2-hydroxyethyl)acrylamide (HEAA) with shorter CSLs displayed a longer residence time, slower self-diffusion, and lower coordination number of interfacial water molecules than N-(3-hydroxypropyl)acrylamide (HPAA) and N-(5-hydroxypentyl)-acrylamide (HPenAA) with longer CSLs. The shorter CSLs allow water molecules to form bridging hydrogen bonds with different hydrophilic groups in the same AM chain, thus enhancing the hydration capacity of AMs. Consequently, different from HPenAA, which had a weak but detectable interaction with the protein, HMAA, HEAA, and HPAA had almost zero interactions with the protein. This computational work provides a better fundamental understanding of the surface hydration and protein interaction of different AMs with subtle structural changes from structural, dynamic, and energy aspects at the atomic level, which hopefully will guide the design of new and effective nonfouling materials.
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Affiliation(s)
- Yonglan Liu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices College of Life Science and Chemistry , Hunan University of Technology , Zhuzhou 412007 , China
- Department of Chemical & Biomolecular Engineering , The University of Akron , Akron , Ohio 44325 , United States
| | - Yanxian Zhang
- Department of Chemical & Biomolecular Engineering , The University of Akron , Akron , Ohio 44325 , United States
| | - Baiping Ren
- Department of Chemical & Biomolecular Engineering , The University of Akron , Akron , Ohio 44325 , United States
| | - Yan Sun
- Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology , Tianjin University , Tianjin 300354 , China
| | - Yi He
- College of Chemical and Biological Engineering , Zhejiang University , Hangzhou , Zhejiang 310027 , China
| | - Fang Cheng
- State Key Laboratory of Fine Chemicals , Dalian University of Technology , Dalian 116024 , China
| | - Jianxiong Xu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices College of Life Science and Chemistry , Hunan University of Technology , Zhuzhou 412007 , China
| | - Jie Zheng
- Department of Chemical & Biomolecular Engineering , The University of Akron , Akron , Ohio 44325 , United States
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43
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Pidhatika B, Nalam PC. Investigation of design parameters in generating antifouling and lubricating surfaces using hydrophilic polymer brushes. J Appl Polym Sci 2019. [DOI: 10.1002/app.47659] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bidhari Pidhatika
- Laboratory for Surface Science and Technology, Department of MaterialsETH Zürich Vladimir‐Prelog‐Weg 1‐5/10, 8093, Zurich Switzerland
| | - Prathima C. Nalam
- Laboratory for Surface Science and Technology, Department of MaterialsETH Zürich Vladimir‐Prelog‐Weg 1‐5/10, 8093, Zurich Switzerland
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44
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Jalili K, Abbasi F, Behboodpour L. In situ probing of switchable nanomechanical properties of responsive high-density polymer brushes on poly(dimethylsiloxane): An AFM nanoindentation approach. J Mech Behav Biomed Mater 2019; 93:118-129. [PMID: 30785077 DOI: 10.1016/j.jmbbm.2019.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 01/27/2019] [Accepted: 02/03/2019] [Indexed: 12/01/2022]
Abstract
Nanomechanical characteristics of end grafted polymer brushes were studied by AFM based, colloidal probe nanoindentation measurements. A high-density polymer brush of poly(2-hydroxyethyl methacrylate) (PHEMA) was precisely prepared on the surface of a flexible poly(dimethylsiloxane) (PDMS) substrate oxidized in ultraviolet/ozone (UVO). Exposure times less than 10min resulted in laterally homogeneous oxidized surfaces, characterized by a SiOx thickness ∼35nm and an increased modulus up to 9MPa, as shown by AFM nanoindentation measurements. We have demonstrated that a high surface density of up to ∼0.63chains/nm2 of the well-defined PHEMA brushes can be grown from the surface of oxidized PDMS by surface-initiated atom transfer radical polymerization (SI-ATRP) from trimethoxysilane derivatives mixed-SAM. The reversible nanomechanical changes of PHEMA layer between extended (hydrated state) and collapsed (dehydrated state) chain upon immersing in selective and non-selective solvents were investigated by in situ AFM nanoindentation analysis in liquid environments. The elastic modulus derived from force-indentation curves obtained for swollen PHEMA grafted chains in water was estimated to be equal 2.7±0.2MPa, which is almost two orders of magnitude smaller than the modulus of dry PHEMA brush. Additionally, under cyclohexane immersion, the modulus of the PHEMA layer decreased by one order of magnitude, indicating a more compact chain packing at the PDMS surface.
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Affiliation(s)
- K Jalili
- Institute of Polymeric Materials, Sahand University of Technology, P.O.Box 51335-1996, Tabriz, Iran; Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran; Max Planck Institute for Polymer Research, 10 Ackermannweg, 55128 Mainz, Germany.
| | - F Abbasi
- Institute of Polymeric Materials, Sahand University of Technology, P.O.Box 51335-1996, Tabriz, Iran; Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
| | - L Behboodpour
- Institute of Polymeric Materials, Sahand University of Technology, P.O.Box 51335-1996, Tabriz, Iran; Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
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45
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Duque-Sanchez L, Brack N, Postma A, Meagher L, Pigram PJ. Engineering the Biointerface of Electrospun 3D Scaffolds with Functionalized Polymer Brushes for Enhanced Cell Binding. Biomacromolecules 2018; 20:813-825. [DOI: 10.1021/acs.biomac.8b01427] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Lina Duque-Sanchez
- Centre for Materials and Surface Science and Department of Chemistry and Physics, La Trobe University, Melbourne, Victoria 3086, Australia
- CSIRO Manufacturing, Bayview Avenue, Clayton, Vic 3168, Australia
| | - Narelle Brack
- Centre for Materials and Surface Science and Department of Chemistry and Physics, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Almar Postma
- CSIRO Manufacturing, Bayview Avenue, Clayton, Vic 3168, Australia
| | - Laurence Meagher
- Monash Institute of Medical Engineering and Department of Materials Science and Engineering, Monash University, Clayton, Vic 3800, Australia
| | - Paul J. Pigram
- Centre for Materials and Surface Science and Department of Chemistry and Physics, La Trobe University, Melbourne, Victoria 3086, Australia
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46
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Morgese G, Gombert Y, Ramakrishna SN, Benetti EM. Mixing Poly(ethylene glycol) and Poly(2-alkyl-2-oxazoline)s Enhances Hydration and Viscoelasticity of Polymer Brushes and Determines Their Nanotribological and Antifouling Properties. ACS APPLIED MATERIALS & INTERFACES 2018; 10:41839-41848. [PMID: 30395432 DOI: 10.1021/acsami.8b17193] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Poly(2-alkyl-2-oxazoline)s (PAOXAs) have progressively emerged as suitable alternatives for replacing poly(ethylene glycol) (PEG) in a variety of biomaterial-related applications, especially in the designing of polymer brush-based biointerfaces because of their stealth properties and chemical robustness. When equimolar mixtures of PEG and PAOXAs are assembled on surfaces to yield mixed polymer brushes, the interfacial physicochemical properties of the obtained films are significantly altered, in some cases, surpassing the biopassive and lubricious characteristics displayed by single-component PAOXA and PEG counterparts. With a combination of variable angle spectroscopic ellipsometry, quartz crystal microbalance with dissipation, and atomic force microscopy-based methods, we demonstrate that mixing of PEG brushes with equimolar amounts of PAOXA grafts determines an increment in film's hydration and viscoelasticity. In the case of mixtures of PEG and poly(2-methyl-2-oxazoline) or poly(2-ethyl-2-oxazoline), brushes displaying full inertness toward serum proteins and improved lubricity with respect to the corresponding single-component layers can be generated, while providing a multifunctional surface that substantially enlarges the applicability of the designed coatings.
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Affiliation(s)
- Giulia Morgese
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials , ETH Zürich CH 8093 , Zürich , Switzerland
| | - Yvonne Gombert
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials , ETH Zürich CH 8093 , Zürich , Switzerland
| | - Shivaprakash N Ramakrishna
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials , ETH Zürich CH 8093 , Zürich , Switzerland
| | - Edmondo M Benetti
- Polymer Surfaces Group, Laboratory for Surface Science and Technology, Department of Materials , ETH Zürich CH 8093 , Zürich , Switzerland
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47
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Patil R, Miles J, Ko Y, Datta P, Rao BM, Kiserow D, Genzer J. Kinetic Study of Degrafting Poly(methyl methacrylate) Brushes from Flat Substrates by Tetrabutylammonium Fluoride. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01832] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Rohan Patil
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Jason Miles
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Yeongun Ko
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Preeta Datta
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Balaji M. Rao
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
| | - Douglas Kiserow
- US Army Research
Office, Research Triangle Park, North Carolina 27709-2211, United States
| | - Jan Genzer
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, United States
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48
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Xu X, Billing M, Ruths M, Klok HA, Yu J. Structure and Functionality of Polyelectrolyte Brushes: A Surface Force Perspective. Chem Asian J 2018; 13:3411-3436. [PMID: 30080310 DOI: 10.1002/asia.201800920] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Indexed: 11/11/2022]
Abstract
The unique functionality of polyelectrolyte brushes depends on several types of specific interactions, including solvent structure effects, hydrophobic forces, electrostatic interactions, and specific ion interactions. Subtle variations in the solution environment can lead to conformational and surface structural changes of the polyelectrolyte brushes, which are mainly discussed from a surface-interaction perspective in this Focus Review. A brief overview is given of recent theoretical and experimental progress in the structure of polyelectrolyte brushes in various environments. Two important techniques for surface-force measurements are described, the surface forces apparatus (SFA) and atomic force microscopy (AFM), and some recent results on polyelectrolyte brushes are shown. Lastly, this Focus Review highlights the use of these surface-grafted polyelectrolyte brushes in the creation of functional surfaces for various applications, including nonfouling surfaces, boundary lubricants, and stimuli-responsive surfaces.
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Affiliation(s)
- Xin Xu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore.,Department of Chemistry, University of Massachusetts Lowell, Lowell, MA, 01854, USA
| | - Mark Billing
- Institut des Matériaux et Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères, École Polytechnique Fédérale de Lausanne (EPFL), Bâtiment MXD, Station 12, CH-1015, Lausanne, Switzerland
| | - Marina Ruths
- Department of Chemistry, University of Massachusetts Lowell, Lowell, MA, 01854, USA
| | - Harm-Anton Klok
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore.,Institut des Matériaux et Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères, École Polytechnique Fédérale de Lausanne (EPFL), Bâtiment MXD, Station 12, CH-1015, Lausanne, Switzerland
| | - Jing Yu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
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49
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Ghaleh H, Jalili K, Maher BM, Rahbarghazi R, Mehrjoo M, Bonakdar S, Abbasi F. Biomimetic antifouling PDMS surface developed via well-defined polymer brushes for cardiovascular applications. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.08.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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50
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Fantin M, Ramakrishna SN, Yan J, Yan W, Divandari M, Spencer ND, Matyjaszewski K, Benetti EM. The Role of Cu0 in Surface-Initiated Atom Transfer Radical Polymerization: Tuning Catalyst Dissolution for Tailoring Polymer Interfaces. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01306] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Marco Fantin
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - 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
| | - Jiajun Yan
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - 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
| | - Mohammad Divandari
- 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
| | - Nicholas D. Spencer
- 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
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - 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
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