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Parveen S, Basu M, Chowdhury P, Dhara T, DasGupta S, Das S, Dasgupta S. Surface modification of polydimethylsiloxane by the cataractous eye protein isolate. Int J Biol Macromol 2024; 260:129470. [PMID: 38237817 DOI: 10.1016/j.ijbiomac.2024.129470] [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: 11/01/2023] [Revised: 01/05/2024] [Accepted: 01/11/2024] [Indexed: 01/27/2024]
Abstract
Polydimethylsiloxane (PDMS), even though widely used in microfluidic applications, its hydrophobic nature restricts its utility in some cases. To address this, PDMS may be used in conjunction with a hydrophilic material. Herein, the PDMS surface is modified by plasma treatment followed by cross-linking with the cataractous eye protein isolate (CEPI). CEPI-PDMS composites are prepared at three pH and the effects of CEPI on the chemical, physical, and electrical properties of PDMS are extensively investigated. The cross-linking between PDMS and the protein are confirmed by FTIR, and the contact angle measurements indicate the improved hydrophilic nature of the composite films as compared to PDMS. Atomic Force Microscopy results demonstrate that the surface roughness is enhanced by the incorporation of the protein and is a function of the pH. The effective elastic modulus of the composites is improved by the incorporation of protein into the PDMS matrix. Measurements of the dielectric properties of these composites indicate that they behave as capacitors at lower frequency range while demonstrating resistive characteristics at higher frequency. These composites provide preliminary ideas in developing flexible devices for potential applications in diverse areas such as energy storage materials, and thermo-elective wireless switching devices.
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Affiliation(s)
- Sultana Parveen
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Mainak Basu
- Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Prasun Chowdhury
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Trina Dhara
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Sunando DasGupta
- Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India; Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
| | - Soumen Das
- Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India; School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, India
| | - Swagata Dasgupta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India.
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2
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Hwang J, Jeon S, Kim B, Kim J, Jin C, Yeon A, Yi B, Yoon C, Park H, Pané S, Nelson BJ, Choi H. An Electromagnetically Controllable Microrobotic Interventional System for Targeted, Real-Time Cardiovascular Intervention. Adv Healthc Mater 2022; 11:e2102529. [PMID: 35137568 DOI: 10.1002/adhm.202102529] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 01/28/2022] [Indexed: 12/26/2022]
Abstract
Robotic magnetic manipulation systems offer a wide range of potential benefits in medical fields, such as precise and selective manipulation of magnetically responsive instruments in difficult-to-reach vessels and tissues. However, more preclinical/clinical studies are necessary before robotic magnetic interventional systems can be widely adopted. In this study, a clinically translatable, electromagnetically controllable microrobotic interventional system (ECMIS) that assists a physician in remotely manipulating and controlling microdiameter guidewires in real time, is reported. The ECMIS comprises a microrobotic guidewire capable of active magnetic steering under low-strength magnetic fields, a human-scale electromagnetic actuation (EMA) system, a biplane X-ray imaging system, and a remote guidewire/catheter advancer unit. The proposed ECMIS demonstrates targeted real-time cardiovascular interventions in vascular phantoms through precise and rapid control of the microrobotic guidewire under EMA. Further, the potential clinical effectiveness of the ECMIS for real-time cardiovascular interventions is investigated through preclinical studies in coronary, iliac, and renal arteries of swine models in vivo, where the magnetic steering of the microrobotic guidewire and control of other ECMIS modules are teleoperated by operators in a separate control booth with X-ray shielding. The proposed ECMIS can help medical physicians optimally manipulate interventional devices such as guidewires under minimal radiation exposure.
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Affiliation(s)
- Junsun Hwang
- Department of Robotics Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu 42988 Republic of Korea
- DGIST‐ETH Microrobotics Research Center Daegu 42988 Republic of Korea
| | - Sungwoong Jeon
- Department of Robotics Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu 42988 Republic of Korea
- DGIST‐ETH Microrobotics Research Center Daegu 42988 Republic of Korea
| | - Beomjoo Kim
- Department of Robotics Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu 42988 Republic of Korea
- DGIST‐ETH Microrobotics Research Center Daegu 42988 Republic of Korea
| | - Jin‐young Kim
- Department of Robotics Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu 42988 Republic of Korea
- DGIST‐ETH Microrobotics Research Center Daegu 42988 Republic of Korea
| | - Chaewon Jin
- Department of Robotics Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu 42988 Republic of Korea
- DGIST‐ETH Microrobotics Research Center Daegu 42988 Republic of Korea
| | - Ara Yeon
- Department of Robotics Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu 42988 Republic of Korea
- DGIST‐ETH Microrobotics Research Center Daegu 42988 Republic of Korea
| | - Byung‐Ju Yi
- Department of Electronic Systems Engineering Hanyang University ERICA Gyeonggi 15588 Republic of Korea
| | - Chang‐Hwan Yoon
- Cardiovascular Center Seoul National University Bundang Hospital Seoul National University College of Medicine Gyeonggi 13620 Republic of Korea
| | - Hun‐Jun Park
- Division of Cardiology Department of Internal Medicine Seoul St. Mary's Hospital The Catholic University of Korea Seoul 06591 Republic of Korea
| | - Salvador Pané
- DGIST‐ETH Microrobotics Research Center Daegu 42988 Republic of Korea
- Multi‐Scale Robotics Lab Institute of Robotics and Intelligent Systems ETH Zurich Tannenstrasse 3 Zurich CH‐8092 Switzerland
| | - Bradley J. Nelson
- DGIST‐ETH Microrobotics Research Center Daegu 42988 Republic of Korea
- Multi‐Scale Robotics Lab Institute of Robotics and Intelligent Systems ETH Zurich Tannenstrasse 3 Zurich CH‐8092 Switzerland
| | - Hongsoo Choi
- Department of Robotics Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu 42988 Republic of Korea
- DGIST‐ETH Microrobotics Research Center Daegu 42988 Republic of Korea
- Robotics Research Center DGIST Daegu 42988 Republic of Korea
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Zuo S, Lan X, Wang Y, Li S, Tang Z, Wang Y. Preparation and characterization of photopolymerized poly(l-lactide- co-ε-caprolactone- co-N-vinyl-2-pyrrolidone) network as anti-biofouling materials. RSC Adv 2022; 12:8708-8718. [PMID: 35424828 PMCID: PMC8984935 DOI: 10.1039/d1ra09114j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 03/01/2022] [Indexed: 11/28/2022] Open
Abstract
The anti-biofouling properties have important applications in the medical field. In this study, cross-linked networks were prepared by photopolymerizing two synthetic macromonomers, including fumaric acid monoethyl ester (FAME) functionalized, three-armed poly(l-lactide) prepolymers (3-PLLA-F) and poly(ε-caprolactone) prepolymers (2-PCL-F), with N-vinyl-2-pyrrolidone (NVP) as the diluent. The prepared networks were characterized by their thermal properties, mechanical properties, cytotoxicity experiments and anti-biofouling properties. The Young's modulus and tensile strength of networks decreased by increasing PCL content. In contrast, the elongation of networks significantly increased. Moreover, no obvious cytotoxicity was observed, and the adhesion of L929 fibroblasts and platelets was resisted. Combined with Digital Light Processing technology (DLP) in the future, the designed polymer network could potentially be commercial in the field of biological anti-fouling materials. The poly(l-lactide-co-ε-caprolactone-co-N-vinyl-2-pyrrolidone) network formed by UV curing could resist the adhesion of L929 fibroblasts, platelets and bacteria. It could be used in the field of customized biomaterials with biological anti-fouling.![]()
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Affiliation(s)
- Shuyin Zuo
- School of Chemical Engineering, Sichuan University China.,National Engineering Research Center for Biomaterials, Sichuan University China +86-28-6423-2936
| | - Xiaorong Lan
- National Engineering Research Center for Biomaterials, Sichuan University China +86-28-6423-2936
| | - Yong Wang
- School of Chemical Engineering, Sichuan University China.,National Engineering Research Center for Biomaterials, Sichuan University China +86-28-6423-2936
| | - Sai Li
- School of Chemical Engineering, Sichuan University China
| | - Zhonglan Tang
- National Engineering Research Center for Biomaterials, Sichuan University China +86-28-6423-2936.,Institute of Regulatory Science for Medical Device, Sichuan University China
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials, Sichuan University China +86-28-6423-2936
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He Z, Yang X, Wang N, Mu L, Pan J, Lan X, Li H, Deng F. Anti-Biofouling Polymers with Special Surface Wettability for Biomedical Applications. Front Bioeng Biotechnol 2021; 9:807357. [PMID: 34950651 PMCID: PMC8688920 DOI: 10.3389/fbioe.2021.807357] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 11/22/2021] [Indexed: 12/02/2022] Open
Abstract
The use of anti-biofouling polymers has widespread potential for counteracting marine, medical, and industrial biofouling. The anti-biofouling action is usually related to the degree of surface wettability. This review is focusing on anti-biofouling polymers with special surface wettability, and it will provide a new perspective to promote the development of anti-biofouling polymers for biomedical applications. Firstly, current anti-biofouling strategies are discussed followed by a comprehensive review of anti-biofouling polymers with specific types of surface wettability, including superhydrophilicity, hydrophilicity, and hydrophobicity. We then summarize the applications of anti-biofouling polymers with specific surface wettability in typical biomedical fields both in vivo and in vitro, such as cardiology, ophthalmology, and nephrology. Finally, the challenges and directions of the development of anti-biofouling polymers with special surface wettability are discussed. It is helpful for future researchers to choose suitable anti-biofouling polymers with special surface wettability for specific biomedical applications.
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Affiliation(s)
- Zhoukun He
- Institute for Advanced Study, Research Center of Composites and Surface and Interface Engineering, Chengdu University, Chengdu, China
| | - Xiaochen Yang
- Institute for Advanced Study, Research Center of Composites and Surface and Interface Engineering, Chengdu University, Chengdu, China.,School of Mechanical Engineering, Chengdu University, Chengdu, China
| | - Na Wang
- Institute for Advanced Study, Research Center of Composites and Surface and Interface Engineering, Chengdu University, Chengdu, China.,School of Mechanical Engineering, Chengdu University, Chengdu, China
| | - Linpeng Mu
- Institute for Advanced Study, Research Center of Composites and Surface and Interface Engineering, Chengdu University, Chengdu, China.,School of Mechanical Engineering, Chengdu University, Chengdu, China
| | - Jinyuan Pan
- Institute for Advanced Study, Research Center of Composites and Surface and Interface Engineering, Chengdu University, Chengdu, China.,School of Mechanical Engineering, Chengdu University, Chengdu, China
| | - Xiaorong Lan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
| | - Hongmei Li
- School of Food and Biological Engineering, Chengdu University, Chengdu, China
| | - Fei Deng
- Department of Nephrology, Jinniu Hospital of Sichuan Provincial People's Hospital and Chengdu Jinniu District People's Hospital, Chengdu, China.,Department of Nephrology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
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5
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Nakano H, Kakinoki S, Iwasaki Y. Long-lasting hydrophilic surface generated on poly(dimethyl siloxane) with photoreactive zwitterionic polymers. Colloids Surf B Biointerfaces 2021; 205:111900. [PMID: 34102530 DOI: 10.1016/j.colsurfb.2021.111900] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 05/27/2021] [Accepted: 05/29/2021] [Indexed: 11/27/2022]
Abstract
Poly(dimethylsiloxane) (PDMS) is known as one of the most established polymers for making elastomers. Therefore, it is commonly used for the fabrication of biomedical devices. Many PDMS surface modification processes have been proposed recently to increase PDMS reliability in medical fields. However, the modified surface's long-term stability is still limited. Hydrophobic recovery of PDMS is widely recognized as a factor that reduces the efficacy of PDMS surface modification. The photoreactive zwitterionic polymer effectively suppresses the hydrophobic recovery of PDMS, according to the current analysis. The photoreactive zwitterionic monomer, 2-[2-(Methacryloyloxy)ethyldimethylanmmonium] ethyl benzophenoxy phosphate (MBPP) was polymerized by conventional radical polymerization and coated on O2-plasma-treated PDMS specimens. The specimens were immersed in an aqueous solution of 2-methacryloyloxyethyl phosphorylcholine (MPC) and exposed under ultraviolet (UV) radiation for 3 h. Instead, of poly(MBPP) (PMBPP), benzophenone (BP) was also used as a conventional photoinitiator. The time-dependent change in the wettability and elemental composition of the specimen surface was monitored for nine weeks after photo-grafting of poly[2-methacryloyloxyethyl phosphorylcholine (MPC)] (PMPC). The advancing and receding contact angles (θA/θR) of the pristine PDMS specimen were 112°/71° and significantly decreased immediately after the grafting of PMPC regardless of types of photoinitiator. However, the hydrophobicity of the surface gradually recovered, and θA was changed from 12° to 81° for nine weeks of storage under air atmosphere when BP was used as a photoinitiator for graft polymerization of MPC. However, surface hydrophilicity (θA ≅ 20°) of the surface grafted with PMPC with PMBPP as an initiator was effectively preserved for nine weeks. This surface also showed excellent lubricity and non-fouling properties regardless of the storage periods. Therefore, zwitterionic photoreactive polymer, PMBPP, is then used as a macrophotoinitiator for the surface modification of PDMS.
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Affiliation(s)
- Hiroki Nakano
- Graduate School of Science and Engineering, Kansai University, 3-3-35 Yamate-cho, Suita-shi, Osaka, 564-8680, Japan
| | - Sachiro Kakinoki
- Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita-shi, Osaka, 564-8680, Japan; Organization for Research and Development of Innovative Science and Technology, Kansai University, 3-3-35 Yamate-cho, Suita-shi, Osaka, 564-8680, Japan
| | - Yasuhiko Iwasaki
- Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita-shi, Osaka, 564-8680, Japan; Organization for Research and Development of Innovative Science and Technology, Kansai University, 3-3-35 Yamate-cho, Suita-shi, Osaka, 564-8680, Japan.
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6
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Taşdemir M, Şenaslan F, Çelik A. Investigation of corrosion and thermal behavior of PU–PDMS-coated AISI 316L. E-POLYMERS 2021. [DOI: 10.1515/epoly-2021-0035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Polydimethylsiloxane (PDMS) is widely used from biomedical to industrial applications due to its nontoxic, hydrophobic, and transparent characteristics. PDMS has good thermal and adhesion properties; however, its mechanical properties are comparatively weak. Therefore, PDMS is blended with various polymers to effectively improve its mechanical properties. In this study, polyurethane (PU)–polydimethylsiloxane (PDMS) blended coatings of different concentrations were applied on the AISI 316L stainless steel surface. Their effects on corrosion and tribocorrosion properties were investigated in Ringer’s solutions. The blended polymer coatings were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The thermal properties of samples were examined by TGA and DSC. The surface images and cross-sectional were investigated using scanning electron microscopy (SEM). Tribocorrosion tests were carried out at open circuit potential (OCP). It was determined that hydrophobicity and thermal stability of polymer coating increased, while corrosion resistance slightly decreased with the increasing PDMS concentration in the polymer blended. The friction coefficient of blends decreased as the PU concentration increased. As a result, it was determined that the polymer-coated samples containing up to 50% PDMS prevented corrosive wear under the OCP wear test in Ringer’s solutions.
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Affiliation(s)
- Muharrem Taşdemir
- Department of Mechanical Engineering, Faculty of Engineering and Natural Sciences, Gumushane University , 29100 , Gumushane , Turkey
| | - Fatih Şenaslan
- Department of Mechanical Engineering, Faculty of Engineering and Natural Sciences, Gumushane University , 29100 , Gumushane , Turkey
| | - Ayhan Çelik
- Department of Mechanical Engineering, Faculty of Engineering, Ataturk University , 25030 , Erzurum , Turkey
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Wang Y, Lan X, Zuo S, Zou Y, Li S, Tang Z, Wang Y. Photopolymerized poly( l-lactide- b-N-vinyl-2-pyrrolidone) network resists cell adhesion in situ. RSC Adv 2021; 11:20997-21005. [PMID: 35479389 PMCID: PMC9034047 DOI: 10.1039/d1ra00554e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 05/25/2021] [Indexed: 01/29/2023] Open
Abstract
A three-armed star-shaped poly(l-lactide) (PLLA) oligomer was synthesized using glycerol to ring-opening and polymerize l-lactide. The resultant oligomer introduced photoreactive groups at the terminal of PLLA chains by a coupling reaction with monoethyl fumarate (FAME). Photopolymerizable resin has been prepared by mixing PLLA 3-FAME, N-vinyl-2-pyrrolidone (NVP) as a reactive diluent and Irgacure 2959 as a photoinitiator. The PLLA 3-FAME/NVP cross-linked network could be formed by UV curing and was characterized through mechanical property tests, cytotoxicity experiments and cell adhesion experiments. In the dry state, Young's modulus and tensile strength of the network were significantly higher than those of pure PLLA formed by fused deposition modeling (FDM) printing, due to the formation of the cross-linked net. In the wet state, however, Young's modulus and tensile strength of the network were reduced by less than those of PLLA since the water-absorbed NVP content was easy to stretch. Moreover, the resultant network not only exhibited no obvious cytotoxicity but also resisted the adhesion of L929 fibroblasts. Combined with Digital Light Processing (DLP) technology, the poly(l-lactide-b-N-vinyl-2-pyrrolidone) network may be widely used in the field of anti-adhesion barrier materials and/or biological anti-fouling materials with customization requirements. The poly(l-lactide-b-N-vinyl-2-pyrrolidone) network could be formed by UV curing, and resist the adhesion of L929 fibroblasts. It could be used in the field of biological anti-fouling material with customization requirements.![]()
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Affiliation(s)
- Yong Wang
- School of Chemical Engineering
- Sichuan University
- China
- National Engineering Research Center for Biomaterials
- Sichuan University
| | - Xiaorong Lan
- National Engineering Research Center for Biomaterials
- Sichuan University
- China
| | - Shuyin Zuo
- School of Chemical Engineering
- Sichuan University
- China
- National Engineering Research Center for Biomaterials
- Sichuan University
| | - Yafeng Zou
- National Engineering Research Center for Biomaterials
- Sichuan University
- China
| | - Sai Li
- School of Chemical Engineering
- Sichuan University
- China
| | - Zhonglan Tang
- National Engineering Research Center for Biomaterials
- Sichuan University
- China
- Institute of Regulatory Science for Medical Device
- Sichuan University
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials
- Sichuan University
- China
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8
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Faustino CMC, Lemos SMC, Monge N, Ribeiro IAC. A scope at antifouling strategies to prevent catheter-associated infections. Adv Colloid Interface Sci 2020; 284:102230. [PMID: 32961420 DOI: 10.1016/j.cis.2020.102230] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 07/31/2020] [Accepted: 07/31/2020] [Indexed: 01/15/2023]
Abstract
The use of invasive medical devices is becoming more common nowadays, with catheters representing one of the most used medical devices. However, there is a risk of infection associated with the use of these devices, since they are made of materials that are prone to bacterial adhesion with biofilm formation, often requiring catheter removal as the only therapeutic option. Catheter-related urinary tract infections (CAUTIs) and central line-associated bloodstream infections (CLABSIs) are among the most common causes of healthcare-associated infections (HAIs) worldwide while endotracheal intubation is responsible for ventilator-associated pneumonia (VAP). Therefore, to avoid the use of biocides due to the potential risk of bacterial resistance development, antifouling strategies aiming at the prevention of bacterial adherence and colonization of catheter surfaces represent important alternative measures. This review is focused on the main strategies that are able to modify the physical or chemical properties of biomaterials, leading to the creation of antiadhesive surfaces. The most promising approaches include coating the surfaces with hydrophilic polymers, such as poly(ethylene glycol) (PEG), poly(acrylamide) and poly(acrylates), betaine-based zwitterionic polymers and amphiphilic polymers or the use of bulk-modified poly(urethanes). Natural polysaccharides and its modifications with heparin, have also been used to improve hemocompatibility. Recently developed bioinspired techniques yielding very promising results in the prevention of bacterial adhesion and colonization of surfaces include slippery liquid-infused porous surfaces (SLIPS) based on the superhydrophilic rim of the pitcher plant and the Sharklet topography inspired by the shark skin, which are potential candidates as surface-modifying approaches for biomedical devices. Concerning the potential application of most of these strategies in catheters, more in vivo studies and clinical trials are needed to assure their efficacy and safety for possible future use.
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Affiliation(s)
- Célia M C Faustino
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Sara M C Lemos
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Nuno Monge
- Centro Interdisciplinar de Estudos Educacionais (CIED), Escola Superior de Educação de Lisboa, Instituto Politécnico de Lisboa, Campus de Benfica do IPL, 1549-003 Lisboa, Portugal
| | - Isabel A C Ribeiro
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisboa, Portugal.
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9
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Shear Induced TiO2 Nano Structure Using Brush-Coating for Liquid Crystal Alignment. CRYSTALS 2020. [DOI: 10.3390/cryst10100860] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We have developed a very useful and cost-effective liquid crystal (LC) alignment layer of brush-coated TiO2 that is solution-processable for twisted nematic (TN) LC cells. TiO2 was prepared via the sol-gel method. The TiO2 solution was brush-coated on the substrate, followed by an annealing process. During the brush-coating process, a retracting force is generated on the deposited TiO solutions along the coating direction. The annealing process hardens the TiO2 and generates shearing stress arising from the retracting force along the brush-coating direction. The shearing stress created highly oriented nano/microstructure and uniformly aligned LCs with a stable pretilt angle of 0.6°. TN mode LC cells based on brush-coated TiO2 exhibited a performance of 12.5 ms of response and a threshold voltage of 1.8 V. Our brush-coated TiO2 incorporates two steps of the film deposition and alignment process into one step.
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10
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You JB, Lee B, Choi Y, Lee CS, Peter M, Im SG, Lee SS. Nanoadhesive layer to prevent protein absorption in a poly(dimethylsiloxane) microfluidic device. Biotechniques 2020; 69:404-409. [PMID: 32372656 DOI: 10.2144/btn-2020-0025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Poly(dimethylsiloxane) (PDMS) is widely used as a microfluidics platform material; however, it absorbs various molecules, perturbing specific chemical concentrations in microfluidic channels. We present a simple solution to prevent adsorption into a PDMS microfluidic device. We used a vapor-phase-deposited nanoadhesive layer to seal PDMS microfluidic channels. Absorption of fluorescent molecules into PDMS was efficiently prevented in the nanolayer-treated PDMS device. Importantly, when cultured in a nanolayer-treated PDMS device, yeast cells exhibited the expected concentration-dependent response to a mating pheromone, including mating-specific morphological and gene expression changes, while yeast cultured in an untreated PDMS device did not properly respond to the pheromone. Our method greatly expands microfluidic applications that require precise control of molecule concentrations.
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Affiliation(s)
- Jae Bem You
- Department of Chemical & Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Byungjin Lee
- Department of Chemical Engineering & Applied Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Yunho Choi
- Department of Chemical & Biomolecular Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Chang-Soo Lee
- Department of Chemical Engineering & Applied Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Matthias Peter
- Institute for Biochemistry, ETH Zürich, Zürich, CH 8093, Switzerland
| | - Sung Gap Im
- Department of Chemical & Biomolecular Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Sung Sik Lee
- Institute for Biochemistry, ETH Zürich, Zürich, CH 8093, Switzerland.,Scientific Center for Optical & Electron Microscopy (ScopeM), ETH Zürich, Zürich, CH 8093, Switzerland
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11
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Sun W, Liu W, Wu Z, Chen H. Chemical Surface Modification of Polymeric Biomaterials for Biomedical Applications. Macromol Rapid Commun 2020; 41:e1900430. [DOI: 10.1002/marc.201900430] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 02/08/2020] [Accepted: 02/16/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Wei Sun
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
| | - Wenying Liu
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
| | - Zhaoqiang Wu
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
| | - Hong Chen
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
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12
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Le TN, Lee CK. Surface Functionalization of Poly(N-Vinylpyrrolidone) onto Poly(Dimethylsiloxane) for Anti-Biofilm Application. Appl Biochem Biotechnol 2020; 191:29-44. [DOI: 10.1007/s12010-020-03238-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 01/08/2020] [Indexed: 11/24/2022]
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13
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Wang K, Lei Y, Xia D, Xu P, Zhu T, Jiang Z, Ma Y. Neutrophil membranes coated, antibiotic agent loaded nanoparticles targeting to the lung inflammation. Colloids Surf B Biointerfaces 2019; 188:110755. [PMID: 31887646 DOI: 10.1016/j.colsurfb.2019.110755] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 11/28/2019] [Accepted: 12/22/2019] [Indexed: 01/24/2023]
Abstract
Natural cellular membranes, with the outstanding qualities of biocompatibility and specificity, have gained growing attentions in the system of drug delivery. Nanoparticles coated with cellular membranes are starting to be applied as drug-loaded-vehicles to target tumors. Here, neutrophil membranes were selected to apply in the treatment of inflammation because neutrophils can participate in various inflammatory responses and accumulate at inflammatory sites to eliminate pathogens. Through extracting neutrophil membranes from natural neutrophils without affecting their biological properties, nanoparticles loaded with sparfloxacin (SPX) were coated with these membranes and disguised as neutrophils. Compared with traditional nano-medicines, the neutrophil membrane-coated nanoparticles (NM-NP-SPX) possessed precise targeting ability just like the neutrophils could accumulate at inflammatory sites when inflammation burst. In addition, NM-NP-SPX could prolong the circulation time and had the property of controlled-release. Through in vivo experiments, we found that the concentration of three representative inflammatory cytokines in blood, bacteria and inflammatory cells in lungs of the mice with pneumonia reduced significantly in the initial 24 h after the injection of NM-NP-SPX, which meant that NM-NP-SPX could greatly reduce the risk of death for the patients with inflammation. Moreover, the infected lungs could recover rapidly without any side effects to other organs due to the low cytotoxicity of NM-NP-SPX against normal cells. Therefore, our developed drug delivery system has enormous advantages in treating inflammations. Not only that, this kind of bionic method may have greater value and application prospects in curing the inflammations arisen from cancers.
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Affiliation(s)
- Kaiyu Wang
- National Laboratory of Solid State Microstructures and Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China; Key Laboratory of Micro-nano Electric Sensing Technology and Bionic Devices, College of Electronic and Information Engineering, Yili Normal University, Yining, China
| | - Yiteng Lei
- Key Laboratory of Micro-nano Electric Sensing Technology and Bionic Devices, College of Electronic and Information Engineering, Yili Normal University, Yining, China
| | - Donglin Xia
- College of Engineering and Applied Sciences, Nanjing University, Nanjing, China
| | - Peipei Xu
- Department of Hematology, Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Tao Zhu
- National Laboratory of Solid State Microstructures and Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China.
| | - Zhongying Jiang
- Key Laboratory of Micro-nano Electric Sensing Technology and Bionic Devices, College of Electronic and Information Engineering, Yili Normal University, Yining, China.
| | - Yuqiang Ma
- National Laboratory of Solid State Microstructures and Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China.
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14
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Wu C, Zhou Y, Wang H, Hu J, Wang X. Formation of antifouling functional coating from deposition of a zwitterionic-co-nonionic polymer via “grafting to” approach. JOURNAL OF SAUDI CHEMICAL SOCIETY 2019. [DOI: 10.1016/j.jscs.2019.05.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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15
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Zhao W, Yang J, Guo H, Xu T, Li Q, Wen C, Sui X, Lin C, Zhang J, Zhang L. Slime-resistant marine anti-biofouling coating with PVP-based copolymer in PDMS matrix. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.06.042] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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16
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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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17
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Wang P, Dong Y, Zhang S, Liu W, Wu Z, Chen H. Protein-resistant properties of poly(N-vinylpyrrolidone)-modified gold surfaces: The advantage of bottle-brushes over linear brushes. Colloids Surf B Biointerfaces 2019; 177:448-453. [DOI: 10.1016/j.colsurfb.2019.02.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 01/30/2019] [Accepted: 02/15/2019] [Indexed: 01/12/2023]
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18
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Le TN, Au-Duong AN, Lee CK. Facile coating on microporous polypropylene membrane for antifouling microfiltration using comb-shaped poly(N-vinylpyrrolidone) with multivalent catechol. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.12.072] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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19
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Au-Duong AN, Lee CK. Facile protein-resistant and anti-biofilm surface coating based on catechol-conjugated poly(N-vinylpyrrolidone). Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4328-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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20
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Li Y, Xu Y, Fleischer CC, Huang J, Lin R, Yang L, Mao H. Impact of Anti-Biofouling Surface Coatings on the Properties of Nanomaterials and Their Biomedical Applications. J Mater Chem B 2018; 6:9-24. [PMID: 29479429 PMCID: PMC5821433 DOI: 10.1039/c7tb01695f] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Understanding and subsequently controlling non-specific interactions between engineered nanomaterials and biological environment have become increasingly important for further developing and advancing nanotechnology for biomedical applications. Such non-specific interactions, also known as the biofouling effect, mainly associate with the adsorption of biomolecules (such as proteins, DNAs, RNAs, and peptides) onto the surface of nanomaterials and the adhesion or uptake of nanomaterials by various cells. By altering the surface properties of nanomaterials the biofouling effect can lead to in situ changes of physicochemical properties, pharmacokinetics, functions, and toxicity of nanomaterials. This review provides discussions on the current understanding of the biofouling effect, the factors that affect the non-specific interactions associated with biofouling, and the impact of the biofouling effect on the performances and functions of nanomaterials. An overview of the development and applications of various anti-biofouling coating materials to preserve and improve the properties and functions of engineered nanomaterials for intended biomedical applications is also provided.
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Affiliation(s)
- Yuancheng Li
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Yaolin Xu
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Candace C Fleischer
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Jing Huang
- Vascular Biology Program, Boston Children's Hospital, Boston, MA 02115, USA
| | - Run Lin
- Department of Radiology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, People's Republic of China
| | - Lily Yang
- Department of Surgery, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Hui Mao
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA 30322, USA
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21
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Sim JY, Haney MP, Park SI, McCall JG, Jeong JW. Microfluidic neural probes: in vivo tools for advancing neuroscience. LAB ON A CHIP 2017; 17:1406-1435. [PMID: 28349140 DOI: 10.1039/c7lc00103g] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Microfluidic neural probes hold immense potential as in vivo tools for dissecting neural circuit function in complex nervous systems. Miniaturization, integration, and automation of drug delivery tools open up new opportunities for minimally invasive implants. These developments provide unprecedented spatiotemporal resolution in fluid delivery as well as multifunctional interrogation of neural activity using combined electrical and optical modalities. Capitalizing on these unique features, microfluidic technology will greatly advance in vivo pharmacology, electrophysiology, optogenetics, and optopharmacology. In this review, we discuss recent advances in microfluidic neural probe systems. In particular, we will highlight the materials and manufacturing processes of microfluidic probes, device configurations, peripheral devices for fluid handling and packaging, and wireless technologies that can be integrated for the control of these microfluidic probe systems. This article summarizes various microfluidic implants and discusses grand challenges and future directions for further developments.
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Affiliation(s)
- Joo Yong Sim
- Electronics and Telecommunications Research Institute, Bio-Medical IT Convergence Research Department, Daejeon, 34129, Republic of Korea
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22
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Gokaltun A, Yarmush ML, Asatekin A, Usta OB. Recent advances in nonbiofouling PDMS surface modification strategies applicable to microfluidic technology. TECHNOLOGY 2017; 5:1-12. [PMID: 28695160 PMCID: PMC5501164 DOI: 10.1142/s2339547817300013] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
In the last decade microfabrication processes including rapid prototyping techniques have advanced rapidly and achieved a fairly mature stage. These advances have encouraged and enabled the use of microfluidic devices by a wider range of users with applications in biological separations and cell and organoid cultures. Accordingly, a significant current challenge in the field is controlling biomolecular interactions at interfaces and the development of novel biomaterials to satisfy the unique needs of the biomedical applications. Poly(dimethylsiloxane) (PDMS) is one of the most widely used materials in the fabrication of microfluidic devices. The popularity of this material is the result of its low cost, simple fabrication allowing rapid prototyping, high optical transparency, and gas permeability. However, a major drawback of PDMS is its hydrophobicity and fast hydrophobic recovery after surface hydrophilization. This results in significant nonspecific adsorption of proteins as well as small hydrophobic molecules such as therapeutic drugs limiting the utility of PDMS in biomedical microfluidic circuitry. Accordingly, here, we focus on recent advances in surface molecular treatments to prevent fouling of PDMS surfaces towards improving its utility and expanding its use cases in biomedical applications.
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Affiliation(s)
- Aslihan Gokaltun
- Center for Engineering in Medicine at Massachusetts General Hospital, Harvard Medical School, and Shriners Hospital for Children, 51 Blossom St., Boston, MA 02114, USA
- Department of Chemical and Biological Engineering, Tufts University, 4 Colby Street, Medford, MA 02474, USA
- Department of Chemical Engineering, Hacettepe University, 06532, Beytepe, Ankara, Turkey
| | - Martin L Yarmush
- Center for Engineering in Medicine at Massachusetts General Hospital, Harvard Medical School, and Shriners Hospital for Children, 51 Blossom St., Boston, MA 02114, USA
- Department of Biomedical Engineering, Rutgers University, 599 Taylor Rd., Piscataway, NJ 08854, USA
| | - Ayse Asatekin
- Department of Chemical and Biological Engineering, Tufts University, 4 Colby Street, Medford, MA 02474, USA
| | - O Berk Usta
- Center for Engineering in Medicine at Massachusetts General Hospital, Harvard Medical School, and Shriners Hospital for Children, 51 Blossom St., Boston, MA 02114, USA
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23
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Zoppe JO, Ataman NC, Mocny P, Wang J, Moraes J, Klok HA. Surface-Initiated Controlled Radical Polymerization: State-of-the-Art, Opportunities, and Challenges in Surface and Interface Engineering with Polymer Brushes. Chem Rev 2017; 117:1105-1318. [PMID: 28135076 DOI: 10.1021/acs.chemrev.6b00314] [Citation(s) in RCA: 578] [Impact Index Per Article: 82.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The generation of polymer brushes by surface-initiated controlled radical polymerization (SI-CRP) techniques has become a powerful approach to tailor the chemical and physical properties of interfaces and has given rise to great advances in surface and interface engineering. Polymer brushes are defined as thin polymer films in which the individual polymer chains are tethered by one chain end to a solid interface. Significant advances have been made over the past years in the field of polymer brushes. This includes novel developments in SI-CRP, as well as the emergence of novel applications such as catalysis, electronics, nanomaterial synthesis and biosensing. Additionally, polymer brushes prepared via SI-CRP have been utilized to modify the surface of novel substrates such as natural fibers, polymer nanofibers, mesoporous materials, graphene, viruses and protein nanoparticles. The last years have also seen exciting advances in the chemical and physical characterization of polymer brushes, as well as an ever increasing set of computational and simulation tools that allow understanding and predictions of these surface-grafted polymer architectures. The aim of this contribution is to provide a comprehensive review that critically assesses recent advances in the field and highlights the opportunities and challenges for future work.
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Affiliation(s)
- Justin O Zoppe
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Nariye Cavusoglu Ataman
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Piotr Mocny
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Jian Wang
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - John Moraes
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Harm-Anton Klok
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
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24
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Perhydroxycucurbit[6]uril-induced self-assembly of a double-hydrophilic block copolymer in aqueous solution. J INCL PHENOM MACRO 2016. [DOI: 10.1007/s10847-016-0676-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Zhang L, Zhao X, Liu D, Wang H, He C. Polyvinylpyrrolidone-polydimethylsiloxane amphiphilic co-networks: Synthesis, characterization, and perm-selective behavior. J Appl Polym Sci 2016. [DOI: 10.1002/app.42985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Li Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; College of Materials Science and Engineering, Donghua University; 2999 North Renmin Road, Songjiang District Shanghai 201620 People's Republic of China
| | - Xinzhen Zhao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; College of Materials Science and Engineering, Donghua University; 2999 North Renmin Road, Songjiang District Shanghai 201620 People's Republic of China
| | - Dapeng Liu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; College of Materials Science and Engineering, Donghua University; 2999 North Renmin Road, Songjiang District Shanghai 201620 People's Republic of China
| | - Haiye Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; College of Materials Science and Engineering, Donghua University; 2999 North Renmin Road, Songjiang District Shanghai 201620 People's Republic of China
| | - Chunju He
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; College of Materials Science and Engineering, Donghua University; 2999 North Renmin Road, Songjiang District Shanghai 201620 People's Republic of China
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26
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Chen B, Frank-Finney RJ, Gupta M. Fabricating Polymer Canopies onto Structured Surfaces Using Liquid Scaffolds. ACS APPLIED MATERIALS & INTERFACES 2015; 7:23056-23061. [PMID: 26378688 DOI: 10.1021/acsami.5b06543] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this work, we study the use of initiated chemical vapor deposition in conjunction with liquid scaffolds to deposit polymer canopies onto structured surfaces. Liquid is applied to micropillar and microstructure surfaces to act as a scaffolding template such that the deposited polymer films take the shape of the liquid surface. Two methods for directing the location of the scaffolding liquid were examined. In the first method, high surface tension liquids rest in a Cassie-Baxter state over the structured surfaces, allowing for control over the canopy location and size by varying the position and volume of the liquid. In the second method, the structured surfaces are inverted onto a thin layer of low surface tension liquid, allowing the coverage and height of the canopy to be controlled by varying the area and thickness of the liquid layer. Although the canopies demonstrated in this study were fabricated using initiated chemical vapor deposition, the generality of our scaffolding method can easily be translated to other vapor deposition processes.
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Affiliation(s)
- Benny Chen
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California , Los Angeles, California 90089, United States
| | - Robert J Frank-Finney
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California , Los Angeles, California 90089, United States
| | - Malancha Gupta
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California , Los Angeles, California 90089, United States
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27
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Anti-fouling Coatings of Poly(dimethylsiloxane) Devices for Biological and Biomedical Applications. J Med Biol Eng 2015; 35:143-155. [PMID: 25960703 PMCID: PMC4414934 DOI: 10.1007/s40846-015-0029-4] [Citation(s) in RCA: 211] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 01/13/2014] [Indexed: 01/07/2023]
Abstract
Fouling initiated by nonspecific protein adsorption is a great challenge in biomedical applications, including biosensors, bioanalytical devices, and implants. Poly(dimethylsiloxane) (PDMS), a popular material with many attractive properties for device fabrication in the biomedical field, suffers serious fouling problems from protein adsorption due to its hydrophobic nature, which limits the practical use of PDMS-based devices. Effort has been made to develop biocompatible materials for anti-fouling coatings of PDMS. In this review, typical nonfouling materials for PDMS coatings are introduced and the associated basic anti-fouling mechanisms, including the steric repulsion mechanism and the hydration layer mechanism, are described. Understanding the relationships between the characteristics of coating materials and the accompanying anti-fouling mechanisms is critical for preparing PDMS coatings with desirable anti-fouling properties.
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28
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Mizerska U, Fortuniak W, Pospiech P, Sobczak A, Chojnowski J, Slomkowski S. Hydrophilic-hydrophobic properties of SiOH-loaded and modified polysiloxane microspheres and their interaction with γ
-globulin. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3494] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Urszula Mizerska
- Center of Molecular and Macromolecular Studies; Polish Academy of Sciences; Lodz Poland
| | - Witold Fortuniak
- Center of Molecular and Macromolecular Studies; Polish Academy of Sciences; Lodz Poland
| | - Piotr Pospiech
- Center of Molecular and Macromolecular Studies; Polish Academy of Sciences; Lodz Poland
| | - Aleksandra Sobczak
- Center of Molecular and Macromolecular Studies; Polish Academy of Sciences; Lodz Poland
| | - Julian Chojnowski
- Center of Molecular and Macromolecular Studies; Polish Academy of Sciences; Lodz Poland
| | - Stanislaw Slomkowski
- Center of Molecular and Macromolecular Studies; Polish Academy of Sciences; Lodz Poland
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29
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Dirany M, Dies L, Restagno F, Léger L, Poulard C, Miquelard-Garnier G. Chemical modification of PDMS surface without impacting the viscoelasticity: Model systems for a better understanding of elastomer/elastomer adhesion and friction. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.12.036] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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30
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Shahnawaz Khan M, Abdelhamid HN, Wu HF. Near infrared (NIR) laser mediated surface activation of graphene oxide nanoflakes for efficient antibacterial, antifungal and wound healing treatment. Colloids Surf B Biointerfaces 2015; 127:281-91. [PMID: 25687099 DOI: 10.1016/j.colsurfb.2014.12.049] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Revised: 12/22/2014] [Accepted: 12/27/2014] [Indexed: 12/23/2022]
Abstract
Photothermal treatment of graphene oxide (GO) for antibacterial, antifungal and controlling the wound infection treatment using near infrared laser (NIR, Nd-YAG (λ=1064 nm) were reported. Various pathogenic bacteria (Pseudomonas aeruginosa, Staphylococcus aureus) and fungi (Saccharomyces cerevisiae and Candida utilis) were investigated. The cytotoxicity was measured using the proteomic analysis by matrix assisted laser desorption/ionization mass spectrometry (MALDI-MS), optical density (OD600), standard microdilution procedures, transmission electron microscopy (TEM) and epifluorescence microscopy. The laser mediated the surface activation of GO offer high efficiency for antifungal and antibacterial. Wide broad cells with various instruments approved that graphene oxide is promising material for nanomedicine in the near future.
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Affiliation(s)
- M Shahnawaz Khan
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Hani Nasser Abdelhamid
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, 70, Lien-Hai Road, Kaohsiung 80424, Taiwan; Department of Chemistry, Assuit University, Assuit 71515, Egypt
| | - Hui-Fen Wu
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, 70, Lien-Hai Road, Kaohsiung 80424, Taiwan; School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 806, Taiwan; Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan; Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, 70, Lien-Hai Road, Kaohsiung 80424, Taiwan; Institute of Medical Science and Technology, National Sun Yat-Sen University, 80424, Taiwan.
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31
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Zhang Q, Liu H, Zhan X, Chen F, Yan J, Tang H. Microstructure and antibacterial performance of functionalized polyurethane based on polysiloxane tethered cationic biocides. RSC Adv 2015. [DOI: 10.1039/c5ra12945a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The designed polyurethane containing polysiloxanes tethered quaternary ammonium salt groups exhibited special surface migrations, low surface free energy and excellent antibacterial activity towardsEscherichia coli.
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Affiliation(s)
- Qinghua Zhang
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Hailong Liu
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Xiaoli Zhan
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Fengqiu Chen
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Jie Yan
- Zhejiang Feijing New Materials Technology Co., Ltd
- Zhoushan
- China
| | - Hao Tang
- Zhejiang Feijing New Materials Technology Co., Ltd
- Zhoushan
- China
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32
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Lowe S, O'Brien-Simpson NM, Connal LA. Antibiofouling polymer interfaces: poly(ethylene glycol) and other promising candidates. Polym Chem 2015. [DOI: 10.1039/c4py01356e] [Citation(s) in RCA: 330] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review highlights antibiofouling polymer interfaces with emphasis on the latest developments using poly(ethylene glycol) and the design new polymeric structures.
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Affiliation(s)
- Sean Lowe
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Victoria
- Australia 3010
| | | | - Luke A. Connal
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Victoria
- Australia 3010
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33
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Xiong X, Wu Z, Pan J, Xue L, Xu Y, Chen H. A facile approach to modify poly(dimethylsiloxane) surfaces via visible light-induced grafting polymerization. J Mater Chem B 2015; 3:629-634. [DOI: 10.1039/c4tb01600a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We have demonstrated a simple and effective approach for the functional surface modification of poly(dimethylsiloxane) (PDMS) via visible light-induced grafting polymerization at room temperature.
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Affiliation(s)
- Xinhong Xiong
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Zhaoqiang Wu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Jingjing Pan
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Lulu Xue
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Yajun Xu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Hong Chen
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
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34
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Jiang Y, Cai M, Tian Y, Shi H, Liang Y, Zhang H. In situ formed silver nanoparticles on glass fibers grafted with polyacrylamide and their antibacterial activity. POLYMER SCIENCE SERIES B 2014. [DOI: 10.1134/s1560090414040022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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35
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Jiang Y, Liang Y, Zhang H, Zhang W, Tu S. Preparation and biocompatibility of grafted functional β-cyclodextrin copolymers from the surface of PET films. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 41:1-7. [DOI: 10.1016/j.msec.2014.04.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 03/20/2014] [Accepted: 04/06/2014] [Indexed: 11/16/2022]
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36
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Liu X, Yuan L, Li D, Tang Z, Wang Y, Chen G, Chen H, Brash JL. Blood compatible materials: state of the art. J Mater Chem B 2014; 2:5718-5738. [PMID: 32262016 DOI: 10.1039/c4tb00881b] [Citation(s) in RCA: 204] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Devices that function in contact with blood are ubiquitous in clinical medicine and biotechnology. These devices include vascular grafts, coronary stents, heart valves, catheters, hemodialysers, heart-lung bypass systems and many others. Blood contact generally leads to thrombosis (among other adverse outcomes), and no material has yet been developed which remains thrombus-free indefinitely and in all situations: extracorporeally, in the venous circulation and in the arterial circulation. In this article knowledge on blood-material interactions and "thromboresistant" materials is reviewed. Current approaches to the development of thromboresistant materials are discussed including surface passivation; incorporation and/or release of anticoagulants, antiplatelet agents and thrombolytic agents; and mimicry of the vascular endothelium.
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Affiliation(s)
- Xiaoli Liu
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
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37
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Automated chemiluminescence immunoassay for a nonionic surfactant using a recycled spinning-pausing controlled washing procedure on a compact disc-type microfluidic platform. Talanta 2014; 133:100-6. [PMID: 25435234 DOI: 10.1016/j.talanta.2014.06.075] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 05/20/2014] [Accepted: 06/13/2014] [Indexed: 11/23/2022]
Abstract
A fully automated and integrated chemiluminescence immunoassay, carried out on a compact disc (CD)-type microfluidic platform, for the detection of alkylphenol polyethoxylates (APnEOs) is described. The pattern of the CD-type microchip was designed so as to permit the sequential solution delivery of the sample solution, the washing solution and the luminol solution, which are required in the chemiluminescence immunoassay process, along with a designed rotation program for spinning the CD-type microchip. The procedure for flowing the washing solution, the volume of which was limited on the CD-type microchip, was optimized by using a recycled spinning-pausing rotation program to overcome the non-specific adsorption of the horseradish peroxidase labeled APnEOs at the detection area. The detection limit of the immunoassay is about 10 ppb.
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38
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Du J, Liu X, Liu W, Wu Z, Chen H. One-step preparation of vinyl-functionalized material surfaces: a versatile platform for surface modification. Sci China Chem 2014. [DOI: 10.1007/s11426-014-5067-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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39
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Robert-Nicoud G, Donno R, Cadman CJ, Alexander MR, Tirelli N. Surface modification of silicone via colloidal deposition of amphiphilic block copolymers. Polym Chem 2014. [DOI: 10.1039/c4py00941j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Jiang J, Zhu L, Zhu L, Zhang H, Zhu B, Xu Y. Antifouling and antimicrobial polymer membranes based on bioinspired polydopamine and strong hydrogen-bonded poly(N-vinyl pyrrolidone). ACS APPLIED MATERIALS & INTERFACES 2013; 5:12895-12904. [PMID: 24313803 DOI: 10.1021/am403405c] [Citation(s) in RCA: 229] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A facile and versatile approach for the preparation of antifouling and antimicrobial polymer membranes has been developed on the basis of bioinspired polydopamine (PDA) in this work. It is well-known that a tightly adherent PDA layer can be generated over a wide range of material surfaces through a simple dip-coating process in dopamine aqueous solution. The resulting PDA coating is prone to be further surface-tailored and functionalized via secondary treatments because of its robust reactivity. Herein, a typical hydrophobic polypropylene (PP) porous membrane was first coated with a PDA layer and then further modified by poly(N-vinyl pyrrolidone) (PVP) via multiple hydrogen-bonding interactions between PVP and PDA. Data of water contact angle measurements showed that hydrophilicity and wettability of the membranes were significantly improved after introducing PDA and PVP layers. Both permeation fluxes and antifouling properties of the modified membranes were enhanced as evaluated in oil/water emulsion filtration, protein filtration, and adsorption tests. Furthermore, the modified membranes showed remarkable antimicrobial activity after iodine complexation with the PVP layer. The PVP layer immobilized on the membrane had satisfying long-term stability and durability because of the strong noncovalent forces between PVP and PDA coating. The strategy of material surface modification reported here is substrate-independent, and applicable to a broad range of materials and geometries, which allows effective development of materials with novel functional coatings based on the mussel-inspired surface chemistry.
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Affiliation(s)
- Jinhong Jiang
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University , Hangzhou 310027, P. R. China
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41
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Hou J, Shi Q, Stagnaro P, Ye W, Jin J, Conzatti L, Yin J. Aqueous-based immobilization of initiator and surface-initiated ATRP to construct hemocompatible surface of poly (styrene-b-(ethylene-co-butylene)-b-styrene) elastomer. Colloids Surf B Biointerfaces 2013; 111:333-41. [DOI: 10.1016/j.colsurfb.2013.06.029] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Revised: 06/09/2013] [Accepted: 06/13/2013] [Indexed: 12/23/2022]
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42
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Ferreira P, Carvalho Á, Correia TR, Antunes BP, Correia IJ, Alves P. Functionalization of polydimethylsiloxane membranes to be used in the production of voice prostheses. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2013; 14:055006. [PMID: 27877613 PMCID: PMC5090376 DOI: 10.1088/1468-6996/14/5/055006] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Accepted: 08/26/2013] [Indexed: 05/08/2023]
Abstract
The voice is produced by the vibration of vocal cords which are located in the larynx. Therefore, one of the major consequences for patients subjected to laryngectomy is losing their voice. In these cases, a synthetic one-way valve set (voice prosthesis) can be implanted in order to allow restoration of speech. Most voice prostheses are produced with silicone-based materials such as polydimethylsiloxane (PDMS). This material has excellent properties, such as optical transparency, chemical and biological inertness, non-toxicity, permeability to gases and excellent mechanical resistance that are fundamental for its application in the biomedical field. However, PDMS is very hydrophobic and this property causes protein adsorption which is followed by microbial adhesion and biofilm formation. To overcome these problems, surface modification of materials has been proposed in this study. A commercial silicone elastomer, SylgardTM 184 was used to prepare membranes whose surface was modified by grafting 2-hydroxyethylmethacrylate and methacrylic acid by low-pressure plasma treatment. The hydrophilicity, hydrophobic recovery and surface energy of the produced materials were determined. Furthermore, the cytotoxicity and antibacterial activity of the materials were also assessed. The results obtained revealed that the PDMS surface modification performed did not affect the material's biocompatibility, but decreased their hydrophobic character and bacterial adhesion and growth on its surface.
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Affiliation(s)
- Paula Ferreira
- CIEPQPF, Departamento de Engenharia Química, Universidade de Coimbra, Polo II, Pinhal de Marrocos, 3030-790 Coimbra, Portugal
| | - Álvaro Carvalho
- CIEPQPF, Departamento de Engenharia Química, Universidade de Coimbra, Polo II, Pinhal de Marrocos, 3030-790 Coimbra, Portugal
| | - Tiago Ruivo Correia
- CICS-UBI, Centro de Investigação em Ciências da Saúde, Faculdade de Ciências da Saúde, Universidade da Beira Interior, 6200-506 Covilhã, Portugal
| | - Bernardo Paiva Antunes
- CICS-UBI, Centro de Investigação em Ciências da Saúde, Faculdade de Ciências da Saúde, Universidade da Beira Interior, 6200-506 Covilhã, Portugal
| | - Ilídio Joaquim Correia
- CICS-UBI, Centro de Investigação em Ciências da Saúde, Faculdade de Ciências da Saúde, Universidade da Beira Interior, 6200-506 Covilhã, Portugal
| | - Patrícia Alves
- CIEPQPF, Departamento de Engenharia Química, Universidade de Coimbra, Polo II, Pinhal de Marrocos, 3030-790 Coimbra, Portugal
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43
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Bounds CO, Upadhyay J, Totaro N, Thakuri S, Garber L, Vincent M, Huang Z, Hupert M, Pojman JA. Fabrication and characterization of stable hydrophilic microfluidic devices prepared via the in situ tertiary-amine catalyzed Michael addition of multifunctional thiols to multifunctional acrylates. ACS APPLIED MATERIALS & INTERFACES 2013; 5:1643-1655. [PMID: 23406255 DOI: 10.1021/am302544h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In situ tertiary amine-catalyzed thiol-acrylate chemistry was employed to produce hydrophilic microfluidic devices via a soft lithography process. The process involved the Michael addition of a secondary amine to a multifunctional acrylate producing a nonvolatile in situ tertiary amine catalyst/comonomer molecule. The Michael addition of a multifunctional thiol to a multifunctional acrylate was facilitated by the catalytic activity of the in situ catalyst/comonomer. These cost-efficient thiol-acrylate devices were prepared at room temperature, rapidly, and with little equipment. The thiol-acrylate thermoset materials were more natively hydrophilic than the normally employed poly(dimethylsiloxane) (PDMS) thermoset material, and the surface energies were stable compared to PDMS. Because the final chip was self-adhered via a simple chemical process utilizing the same chemistry, and it was naturally hydrophilic, there was no need for expensive instrumentation or complicated methods to "activate" the surface. There was also no need for postprocessing removal of the catalyst as it was incorporated into the polymer network. These bottom-up devices were fabricated to completion proving their validity as microfluidic devices, and the materials were manipulated and characterized via various analyses illustrating the potential diversity and tunability of the devices.
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Affiliation(s)
- Christopher O Bounds
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70303, USA
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44
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Seeni Meera KM, Murali Sankar R, Jaisankar SN, Mandal AB. Physicochemical Studies on Polyurethane/Siloxane Cross-Linked Films for Hydrophobic Surfaces by the Sol–Gel Process. J Phys Chem B 2013; 117:2682-94. [DOI: 10.1021/jp3097346] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kamal Mohamed Seeni Meera
- Polymer Division, Council of Scientific and Industrial Research (CSIR) − Central Leather Research Institute (CLRI), Adyar, Chennai 600020,
Tamil Nadu, India
| | - Rajavelu Murali Sankar
- Polymer Division, Council of Scientific and Industrial Research (CSIR) − Central Leather Research Institute (CLRI), Adyar, Chennai 600020,
Tamil Nadu, India
| | - Sellamuthu N. Jaisankar
- Polymer Division, Council of Scientific and Industrial Research (CSIR) − Central Leather Research Institute (CLRI), Adyar, Chennai 600020,
Tamil Nadu, India
| | - Asit Baran Mandal
- Polymer Division, Council of Scientific and Industrial Research (CSIR) − Central Leather Research Institute (CLRI), Adyar, Chennai 600020,
Tamil Nadu, India
- Chemical
Laboratory, Council of Scientific and Industrial Research (CSIR) − Central Leather Research Institute (CLRI), Adyar, Chennai 600020,
Tamil Nadu, India
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45
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Liu X, Tong W, Wu Z, Jiang W. Poly(N-vinylpyrrolidone)-grafted poly(dimethylsiloxane) surfaces with tunable microtopography and anti-biofouling properties. RSC Adv 2013. [DOI: 10.1039/c3ra23069d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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46
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Huang Q, Cheng A, Antensteiner M, Lin C, Vogler EA. Mammalian cell-adhesion kinetics measured by suspension depletion. Biomaterials 2013; 34:434-41. [DOI: 10.1016/j.biomaterials.2012.09.073] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Accepted: 09/28/2012] [Indexed: 11/27/2022]
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47
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Hankett JM, Liu Y, Zhang X, Zhang C, Chen Z. Molecular level studies of polymer behaviors at the water interface using sum frequency generation vibrational spectroscopy. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/polb.23221] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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