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Sheng X, Li X, Jia Y, Chen P, Liu Y, Ru G, Xu M, Liu L, Zhu X, Jin X, Liu Y, Zhao H, Li H. Electrochemical Biosensor for Protein Concentration Monitoring Using Natural Wood Evaporation for Power Generation. Anal Chem 2024; 96:917-925. [PMID: 38171538 DOI: 10.1021/acs.analchem.3c05041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
A high-sensitivity, low-cost, self-powered biomass electrochemical biosensor based on the "evaporating potential" theory is developed for protein detection. The feasibility of experimental evaluation methods was verified with a probe protein of bovine serum albumin. The sensor was then used to detect lung cancer marker CYFRA21-1, and the potential of our sensor for clinical diagnosis was demonstrated by serum analysis. This work innovatively exploits the osmotic power generation capability of natural wood to construct a promising electrochemical biosensor that was driven by kinetics during testing. The detection methods used for this sensor, chronoamperometry and AC impedance, showed potential for quantitative analysis and specific detection, respectively. Furthermore, the sensor could facilitate new insights into the development of high-sensitivity, low-cost, and easy-to-use electrochemical biosensors.
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Affiliation(s)
- Xia Sheng
- College of Science, Henan Agricultural University, Nongye Road 63, Zhengzhou 450002, China
| | - Xu Li
- College of Science, Henan Agricultural University, Nongye Road 63, Zhengzhou 450002, China
- Longzihu New Energy Laboratory, Zhengzhou Institute of Emerging Industrial Technology, Henan University, Zhengzhou 450000, China
- Henan Key Laboratory of Energy Storage Materials and Processes, Zhengzhou Institute of Emerging Industrial Technology, Zhengzhou 450003, China
| | - Yanfang Jia
- Department of Clinical Laboratory, People's Hospital of Henan University of Chinese Medicine, No. 33, Huanghe Road, Zhengzhou 450053, Henan, China
| | - Pengxun Chen
- Department of Clinical Laboratory, People's Hospital of Henan University of Chinese Medicine, No. 33, Huanghe Road, Zhengzhou 450053, Henan, China
| | - Yawei Liu
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Guangxin Ru
- College of Forestry, Henan Agricultural University, Nongye Road 63, Zhengzhou 450002, China
| | - Mengyi Xu
- College of Science, Henan Agricultural University, Nongye Road 63, Zhengzhou 450002, China
| | - Lijie Liu
- College of Science, Henan Agricultural University, Nongye Road 63, Zhengzhou 450002, China
| | - Xiuhong Zhu
- College of Forestry, Henan Agricultural University, Nongye Road 63, Zhengzhou 450002, China
| | - Xianchun Jin
- College of Science, Henan Agricultural University, Nongye Road 63, Zhengzhou 450002, China
| | - Yanyan Liu
- College of Science, Henan Agricultural University, Nongye Road 63, Zhengzhou 450002, China
| | - Hailiang Zhao
- College of Science, Henan Agricultural University, Nongye Road 63, Zhengzhou 450002, China
- School of Environmental Engineering, Henan University of Technology, Lianhua Street 100, Zhengzhou 450001, China
| | - Hongjuan Li
- Department of Clinical Laboratory, People's Hospital of Henan University of Chinese Medicine, No. 33, Huanghe Road, Zhengzhou 450053, Henan, China
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Lau YY, Chen K, Liu S, Reith L, Seeger S. Silicone Nanofilament Coatings as Flexible Catalyst Supports for a Knoevenagel Condensation Reaction in Batch and Flow Systems. ACS OMEGA 2022; 7:39463-39470. [PMID: 36340143 PMCID: PMC9632255 DOI: 10.1021/acsomega.2c06157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
In this work, silicone nanofilament (SNF) coatings were prepared via a droplet-assisted growth and shaping (DAGS) approach, where the preparation of the coatings is allowed under ambient conditions. The application of SNF coatings as catalyst supports for amino moieties from (3-aminopropyl)triethoxysilane (APTES) was investigated. With the optimized coating conditions identified, the Brunauer-Emmett-Teller surface areas of a bare glass filter substrate and bare glass beads after the coating have increased by 5-fold and 16-fold, respectively. The SNF-coated filters were readily functionalized with amino groups via a liquid-phase deposition process, and their catalytic activities for a Knoevenagel reaction were evaluated using a batch reactor and a packed bed reactor. In both reactors, the as-prepared filters demonstrated superior catalytic performance over the functionalized filters without SNF coatings. Notably, the unique flexibility of the SNF coatings allowed the facile preparation of a packed bed reactor and a scalable catalytic system. It is expected that the packed bed system established in this study will support the development and the use of various SNF-supported organocatalysts and catalytic materials.
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He Z, Yang X, Mu L, Wang N, Lan X. A versatile "3M" methodology to obtain superhydrophobic PDMS-based materials for antifouling applications. Front Bioeng Biotechnol 2022; 10:998852. [PMID: 36105602 PMCID: PMC9464926 DOI: 10.3389/fbioe.2022.998852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 08/11/2022] [Indexed: 11/13/2022] Open
Abstract
Fouling, including inorganic, organic, bio-, and composite fouling seriously affects our daily life. To reduce these effects, antifouling strategies including fouling resistance, release, and degrading, have been proposed. Superhydrophobicity, the most widely used characteristic for antifouling that relies on surface wettability, can provide surfaces with antifouling abilities owing to its fouling resistance and/or release effects. PDMS shows valuable and wide applications in many fields, and due to the inherent hydrophobicity, superhydrophobicity can be achieved simply by roughening the surface of pure PDMS or its composites. In this review, we propose a versatile "3M" methodology (materials, methods, and morphologies) to guide the fabrication of superhydrophobic PDMS-based materials for antifouling applications. Regarding materials, pure PDMS, PDMS with nanoparticles, and PDMS with other materials were introduced. The available methods are discussed based on the different materials. Materials based on PDMS with nanoparticles (zero-, one-, two-, and three-dimensional nanoparticles) are discussed systematically as typical examples with different morphologies. Carefully selected materials, methods, and morphologies were reviewed in this paper, which is expected to be a helpful reference for future research on superhydrophobic PDMS-based materials for antifouling 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
| | - 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
| | - 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
| | - Xiaorong Lan
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, China
- Institute of Stomatology, Southwest Medical University, Luzhou, China
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4
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Varol HS, Seeger S. Fluorescent Staining of Silicone Micro- and Nanopatterns for Their Optical Imaging. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:231-243. [PMID: 34932361 DOI: 10.1021/acs.langmuir.1c02436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Performance of engineered surfaces can be enhanced by making them hydrophobic or superhydrophobic via coating them with low-surface-energy micro- and nanopatterns. However, the wetting phenomena of particularly irregular shape and spacing (super)hydrophobic patterns such as polysiloxane coatings are not yet fully understood from a microscopic perspective. Here, we show a new method to collect 3D confocal images from irregular polysiloxane micro- and nanorods from a single rod resolution to discuss their wetting response over long liquid/solid interaction times and quantify the length and diameter of these rods. To collect such 3D confocal images, fluorescent dye containing water droplets were left on our superhydrophobic and hydrophobic polysiloxane coated surfaces. Then their liquid/solid interfaces were imaged at different staining scenarios: (i) using different fluorescent dyes, (ii) when the droplets were in contact with surfaces, or (iii) after the droplets were taken away from the surface at the end of staining. Using such staining strategies, we could resolve the micro- and nanorods from root to top and determine their length and diameter, which were then found to be in good agreement with those obtained from their electron microscopy images. 3D confocal images in this paper, for the first time, present the long-time existence of more than one wetting state under the same droplet in contact with surfaces, as well as external and internal three-phase contact lines shifting and pinning. In the end, these findings were used to explain the time-dependent wetting kinetics of our surfaces. We believe that the proposed imaging strategy here will, in the future, be used to study many other irregular patterned (super)antiwetting surfaces to describe their wetting theory, which is today impossible due to the complicated surface geometry of these irregular patterns.
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Affiliation(s)
- H Samet Varol
- Department of Chemistry, Universität Zürich, Zürich, CH 8057, Switzerland
- Ernst-Berl Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt, Alarich-Weiss-Str. 12, Darmstadt, D-64287, Germany
| | - Stefan Seeger
- Department of Chemistry, Universität Zürich, Zürich, CH 8057, Switzerland
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5
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Yang Y, Xu LP, Zhang X, Wang S. Bioinspired wettable-nonwettable micropatterns for emerging applications. J Mater Chem B 2021; 8:8101-8115. [PMID: 32785360 DOI: 10.1039/d0tb01382j] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Superhydrophilic and superhydrophobic surfaces are prevalent in nature and have received tremendous attention due to their importance in both fundamental research and practical applications. With the high interdisciplinary research and great development of microfabrication techniques, artificial wettable-nonwettable micropatterns inspired by the water-collection behavior of desert beetles have been successfully fabricated. A combination of the two extreme states of superhydrophilicity and superhydrophobicity on the same surface precisely, wettable-nonwettable micropatterns possess unique functionalities, such as controllable superwetting, anisotropic wetting, oriented adhesion, and other properties. In this review, we briefly describe the methods for fabricating wettable-nonwettable patterns, including self-assembly, electrodeposition, inkjet printing, and photolithography. We also highlight some of the emerging applications such as water collection, controllable bioadhesion, cell arrays, microreactors, printing techniques, and biosensors combined with various detection methods. Finally, the current challenges and prospects of this renascent and rapidly developing field are proposed and discussed.
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Affiliation(s)
- Yuemeng Yang
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China.
| | - Li-Ping Xu
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China.
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China. and School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, Guangdong, China
| | - Shutao Wang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, CAS Center for Excellence in Nanoscience, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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Park KS, Kang SN, Kim DH, Kim HB, Im KS, Park W, Hong YJ, Han DK, Joung YK. Late endothelial progenitor cell-capture stents with CD146 antibody and nanostructure reduce in-stent restenosis and thrombosis. Acta Biomater 2020; 111:91-101. [PMID: 32434081 DOI: 10.1016/j.actbio.2020.05.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 05/08/2020] [Accepted: 05/08/2020] [Indexed: 12/13/2022]
Abstract
The restoration of damaged endothelium is promising to reduce side effects, including restenosis and thrombosis, in the stent treatment for vascular diseases. Current technologies based on drug delivery for these complications still do not satisfy patients due to invariant recurrence rate. Recently, even if one approach was applied to clinical trial to develop the firstly commercialized stent employing circulating endothelial progenitor cells (EPCs) in blood vessels, it resulted in failure in clinical trial. Based on instruction of the failed case, we designed an advanced EPC-capture stent covered with anti-CD146 antibody (Ab) immobilized silicone nanofilament (SiNf) for the highly efficient and specific capture of not early but late stage of EPCs. In vitro cell capture test demonstrates enhanced capture efficiency and adhesion morphology of late EPCs on the modified substrate. The modified substrates could capture 8 times more late EPCs and even 3 times more mesenchymal stem cells (MSCs) as compared to unmodified one. A porcine model with high similarity to human reproduced in vivo results ideally translated from in vitro cell capture results. As restenosis indicators, lumen area, neointimal rate and stenosis area for modified stents were reduced at the range of 30-60% as compared to those for bare metal stent (BMS). Fibrin score indicating thrombosis was lowered less than half as comparing to that on BMS. These inspiring results are attributed to ~2-fold increased endothelial coverage, determined by immuno-histological staining. Taken together, the CD146 Ab-armed nanofilamentous stent could show great performance in the reduction of thrombosis and restenosis through re-endothelialization due to highly efficient specific cell capture. STATEMENT OF SIGNIFICANCE: Stents have been developed from simple metal stents to functionalized stents for past decades. However, they have still risks to relapse the occlusion in stented arteries. In this paper, we describe the fabrication and optimization of cell capturing stents to maximize the effective re-endothelialization through the serial coating of silicone nanofilaments and anti-CD146 antibody. The nanofilaments increase the amount of coated antibodies and provide the anchoring points of circulating angiogenic cells for strong focal adhesion. We demonstrate high immobilizing ability of circulating angiogenic cells (endotheliali progenitor cells and mesenchymal stem cells) in vitro under similar shear stress to coronary arteries (15 dyne/cm2). Also, we show accelerating re-endothelialization and the efficient prevention of restenosis in porcine coronary arteries in vivo.
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Affiliation(s)
- Kwang-Sook Park
- Center for Biomaterials, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Sung Nam Kang
- Center for Biomaterials, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Dae Hwan Kim
- Center for Biomaterials, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Han-Byual Kim
- The Heart Center of Chonnam National University Hospital, Gwangju 61469, Republic of Korea
| | - Kyung Seob Im
- Futuristic Animal Resource & Research Center, Korea Research Institute of Bioscience and Biotechnology, Cheongju 28116, Republic of Korea
| | - Wooram Park
- Department of Biomedical Science, College of Life Sciences, CHA University, Gyeonggi 13488, Republic of Korea
| | - Young Joon Hong
- The Heart Center of Chonnam National University Hospital, Gwangju 61469, Republic of Korea
| | - Dong Keun Han
- Department of Biomedical Science, College of Life Sciences, CHA University, Gyeonggi 13488, Republic of Korea.
| | - Yoon Ki Joung
- Center for Biomaterials, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon 34113, Republic of Korea.
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Saddiqi NUH, Seeger S. Droplet assisted growth and shaping of alumina and mixed alumina-silicone 1-dimensional nanostructures. J Colloid Interface Sci 2020; 560:77-84. [PMID: 31648085 DOI: 10.1016/j.jcis.2019.09.122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/26/2019] [Accepted: 09/29/2019] [Indexed: 10/25/2022]
Abstract
Since the discovery of silicone nanofilaments a decade ago, room temperature droplet assisted growth and shaping using silanes has been used to synthesize various silicone-based nanostructures. In the present work, we report an extension of this synthesis technique to synthesize nanostructures of new materials. We have successfully synthesized one-dimensional assemblies of beads or necklaces based on alumina (Al) and mixed alumina-silicone (AlSi) nanostructures exhibiting a similar structure as silicone nanofilaments. The characterization of the synthesized nanostructures was performed using different tools, including scanning and transmission electron microscopy, energy dispersive x-ray spectroscopy, and infrared and NMR spectroscopy. Selected area electron diffraction revealed that the nanostructures are amorphous in nature, and the growth behavior and thermal stability of nanostructures are also discussed.
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Affiliation(s)
- Naeem-Ul-Hasan Saddiqi
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, 8057 Zurich, Switzerland
| | - Stefan Seeger
- Department of Chemistry, University of Zurich, Winterthurerstr. 190, 8057 Zurich, Switzerland.
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8
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Zhang X, Liu S, Salim A, Seeger S. Hierarchical Structured Multifunctional Self-Cleaning Material with Durable Superhydrophobicity and Photocatalytic Functionalities. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1901822. [PMID: 31184439 DOI: 10.1002/smll.201901822] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/13/2019] [Indexed: 06/09/2023]
Abstract
Self-cleaning materials, which are inspired and derived from natural phenomena, have gained significant scientific and commercial interest in the past decades as they are energy- and labor-saving and environmentally friendly. Several technologies are developed to obtain self-cleaning materials. The combination of superhydrophobic and photocatalytic properties enables the efficient removal of solid particles and organic contaminations, which could reduce or damage the superhydrophobicity. However, the fragility of the nanoscale roughness of the superhydrophobic surface limits its practical application. Here, a hierarchical structure approach combining micro- and nanoscale architectures is created to protect the nanoscale surface roughness from mechanical damage. Glass beads of 75 µm are partially embedded into a low-density polyethylene film. This composite surface is coated with silicone nanofilaments (SNFs) via the droplet-assisted growth and shaping approach, providing the nanoscale surface roughness as well as the support for the photocatalyst with enlarged surface area. TiO2 nanoparticles, which serve as the photocatalyst, are synthesized in situ on SNFs through a hydrothermal reaction. The self-cleaning effect is proved using wettability measurements for various liquids, degradation of organic contamination under UV light, and antibacterial tests. The enhanced mechanical durability of the hierarchical structure of the composite material is verified with an abrasion test.
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Affiliation(s)
- Xiaotian Zhang
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Shanqiu Liu
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Alma Salim
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Stefan Seeger
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
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Meier M, Suppiger A, Eberl L, Seeger S. Functional Silver-Silicone-Nanofilament-Composite Material for Water Disinfection. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1601072. [PMID: 27622297 DOI: 10.1002/smll.201601072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 08/10/2016] [Indexed: 06/06/2023]
Abstract
The roughness of superhydrophobic silicone nanofilaments (SNFs) is exploited to enlarge the contact area of conventional filter material. As an efficient wetting of the filter material is crucial for water treatment, the wettability of SNFs is readily modified from superhydrophobic to hydrophilic during the functionalization process. SNFs are coated on glass beads and subsequently modified with biocidal silver nanoparticles (AgNPs). The enlarged surface area of SNFs allows a 30 times higher loading of AgNPs in comparison to glass beads without SNF coating. Thus, in column experiments, the AgNP-SNF-nanocomposite-modified glass beads exert superior antibacterial activity towards suspensions of E. coli K12 compared to AgNP functionalized glass beads without SNFs. Additionally, reusing the AgNP-SNF-nanocomposite-coated glass beads with fresh bacteria contaminated medium increases their efficacy and reduces the colony forming units by ≈6 log units. Thereby, the silver loss during percolation is below 0.1 μg mL-1 . These results highlight, first, the potential of AgNP-SNF-nanocomposite-modified glass beads as an effective filter substrate for water disinfection, and second, the efficiency of SNF coating in increasing the contact area of conventional filter material.
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Affiliation(s)
- Margrith Meier
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland
| | - Angela Suppiger
- Department of Plant and Microbial Biology, University of Zurich, Zollikerstrasse 107, CH-8008, Zurich, Switzerland
| | - Leo Eberl
- Department of Plant and Microbial Biology, University of Zurich, Zollikerstrasse 107, CH-8008, Zurich, Switzerland
| | - Stefan Seeger
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland
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Vashist SK, Lam E, Hrapovic S, Male KB, Luong JHT. Immobilization of Antibodies and Enzymes on 3-Aminopropyltriethoxysilane-Functionalized Bioanalytical Platforms for Biosensors and Diagnostics. Chem Rev 2014; 114:11083-130. [DOI: 10.1021/cr5000943] [Citation(s) in RCA: 212] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Sandeep Kumar Vashist
- HSG-IMIT - Institut für Mikro- und Informationstechnik, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
- Laboratory for MEMS Applications, Department of Microsystems Engineering - IMTEK, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
| | - Edmond Lam
- National Research Council Canada, Montreal, Quebec H4P 2R2, Canada
| | | | - Keith B. Male
- National Research Council Canada, Montreal, Quebec H4P 2R2, Canada
| | - John H. T. Luong
- Innovative Chromatography Group, Irish Separation Science Cluster (ISSC), Department of Chemistry and Analytical, Biological Chemistry Research Facility (ABCRF), University College Cork, Cork, Ireland
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Artus GRJ, Bigler L, Seeger S. Superficial dopants allow growth of silicone nanofilaments on hydroxyl-free substrates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:10308-10316. [PMID: 25111760 DOI: 10.1021/la501991e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report new types of silicone nanostructures by a gas-phase reaction of trichloromethylsilane: 1-D silicone nanofilaments with a raveled end and silicone nanoteeth. Filaments with a raveled end are obtained on poly(vinyl chloride), which is superficially doped with the detergent Span 20. Silicone nanoteeth grow on sodium chloride using dibutyl phthalate as superficial dopant. Without dopants, no structures are observed. The dopants are identified by mass spectroscopy and the silicone nanostructures are analyzed by infrared spectroscopy and energy-dispersive analysis of X-rays. The growth of silicone nanostructures on a hydrophobic substrate (poly(vinyl chloride)/Span 20) and a substrate free of hydroxyl groups (sodium chloride/dibutyl phthalate) questions the currently discussed mechanisms for the growth of 1-D silicone nanofilaments, which is discussed. We suggest superficial doping as an alternative pretreatment method to oxidizing activation and prove this principle by the successful coating of copper, which is superficially doped with Span 20.
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Affiliation(s)
- Georg R J Artus
- Department of Chemistry, University of Zurich , Winterthurerstrasse 190, 8057 Zurich, Switzerland
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12
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One-dimensional silicone nanofilaments. Adv Colloid Interface Sci 2014; 209:144-62. [PMID: 24742356 DOI: 10.1016/j.cis.2014.03.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 12/20/2013] [Accepted: 03/16/2014] [Indexed: 11/23/2022]
Abstract
A decade ago one-dimensional silicone nanofilaments (1D-SNF) such as fibres and wires were described for the first time. Since then, the exploration of 1D-SNF has led to remarkable advancements with respect to material science and surface science: one-, two- and three-dimensional nanostructures of silicone were unknown before. The discovery of silicone nanostructures marks a turning point in the research on the silicone material at the nanoscale. Coatings made of 1D-SNF are among the most superhydrophobic surfaces known today. They are free of fluorine, can be applied to a large range of technologically important materials and their properties can be modified chemically. This opens the way to many interesting applications such as water harvesting, superoleophobicity, separation of oil and water, patterned wettability and storage and manipulation of data on a surface. Because of their high surface area, coatings consisting of 1D-SNF are used for protein adsorption experiments and as carrier systems for catalytically active nanoparticles. This paper reviews the current knowledge relating to the broad development of 1D-SNF technologies. Common preparation and coating techniques are presented along with a comparison and discussion of the published coating parameters to provide an insight on how these affect the topography of the 1D-SNF or coating. The proposed mechanisms of growth are presented, and their potentials and shortcomings are discussed. We introduce all explored applications and finally identify future prospects and potentials of 1D-SNF with respect to applications in material science and surface science.
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Yuan JJ, Kimitsuka N, Jin RH. Bioinspired synthesis of a soft-nanofilament-based coating consisting of polysilsesquioxanes/polyamine and its divergent surface control. ACS APPLIED MATERIALS & INTERFACES 2013; 5:3126-3133. [PMID: 23534941 DOI: 10.1021/am400025z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The synthesis of polysilsesquioxanes coating with controllable one-dimensional nanostructure on substrates remains a major long-term challenge by conventional solution-phase method. The hydrolytic polycondensation of organosilanes in solution normally produces a mixture of incomplete cages, ladderlike, and network structures, resulting in the poor control of the formation of specific nanostructure. This paper describes a simple aqueous process to synthesize nanofilament-based coatings of polysilsesquioxanes possessing various organo-functional groups (for example, thiol, methyl, phenyl, vinyl, and epoxy). We utilized a self-assembled nanostructured polyamine layer as a biomimetically catalytic scaffold/template to direct the formation of one-dimensional nanofilament of polysilsesquioxanes by temporally and spatially controlled hydrolytic polycondensation of organosilane. The surface nanostructure and morphology of polysilsesquioxane coating could be modulated by changing hydrolysis and condensation reaction conditions, and the orientation of nanofilaments of polysilsesquioxanes on substrates could be controlled by simply adjusting the self-assembly conditions of polyamine layer. The nanostructure and polyamine@polysilsesquioxane hybrid composition of nanofilament-based coatings were examined by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The template role of nanostructured polyamine layer for the formation of polysilsesquioxane nanofilament was confirmed by combining thin film X-ray diffraction (XRD) and XPS measurements. Moreover, these nanotextured coatings with various organo-functional groups could be changed into superhydrophobic surfaces after surface modification with fluorocarbon molecule.
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Affiliation(s)
- Jian-Jun Yuan
- Synthetic Chemistry Laboratory, Kawamura Institute of Chemical Research, 631 Sakado, Sakura, Chiba 285-0078, Japan
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Steiert A, Reimers K, Burke W, Zapf A, Vogt P. Covalent vectored binding of functional proteins by bifunctional crosslinking at silicone interfaces. J Biomed Mater Res A 2012; 100:1248-55. [DOI: 10.1002/jbm.a.34008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 10/06/2011] [Accepted: 10/27/2011] [Indexed: 11/09/2022]
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15
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Artus GRJ, Seeger S. Scale-Up of a Reaction Chamber for Superhydrophobic Coatings Based on Silicone Nanofilaments. Ind Eng Chem Res 2012. [DOI: 10.1021/ie202129z] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Georg R. J. Artus
- Institute of Physical Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Stefan Seeger
- Institute of Physical Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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16
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Yuan JJ, Jin RH. Approaches to nanostructure control and functionalizations of polymer@silica hybrid nanograss generated by biomimetic silica mineralization on a self-assembled polyamine layer. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2011; 2:760-773. [PMID: 22259759 PMCID: PMC3257501 DOI: 10.3762/bjnano.2.84] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2011] [Accepted: 11/10/2011] [Indexed: 05/31/2023]
Abstract
We report the rational control of the nanostructure and surface morphology of a polyamine@silica nanoribbon-based hybrid nanograss film, which was generated by performing a biomimetic silica mineralization reaction on a nanostructured linear polyethyleneimine (LPEI) layer preorganized on the inner wall of a glass tube. We found that the film thickness, size and density of the nanoribbons and the aggregation/orientation of the nanoribbons in the film were facile to tune by simple adjustment of the biomimetic silicification conditions and LPEI self-assembly on the substrate. Our LPEI-mediated nanograss process allows the facile and programmable generation of a wide range of nanostructures and surface morphologies without the need for complex molecular design or tedious techniques. This ribbon-based nanograss has characteristics of a LPEI@silica hybrid structure, suggesting that LPEI, as a polymeric secondary amine, is available for subsequent chemical reaction. This feature was exploited to functionalize the nanograss film with three representative species, namely porphyrin, Au nanoparticles and titania. Of particular note, the novel silica@titania composite nanograss surface demonstrated the ability to convert its wetting behavior between the extreme states (superhydrophobic-superhydrophilic) by surface hydrophobic treatment and UV irradiation. The anatase titania component in the nanograss film acts as a highly efficient photocatalyst for the decomposition of the low-surface-energy organic components attached to the nanosurface. The ease with which the nanostructure can be controlled and facilely functionalized makes our nanograss potentially important for device-based application in microfluidic, microreactor and biomedical fields.
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Affiliation(s)
- Jian-Jun Yuan
- Synthetic Chemistry Lab., Kawamura Institute of Chemical Research, 631 Sakado, Sakura, 285-0078 Japan
| | - Ren-Hua Jin
- Synthetic Chemistry Lab., Kawamura Institute of Chemical Research, 631 Sakado, Sakura, 285-0078 Japan
- CREST-JST, 631 Sakado, Sakura, Chiba 285-0078, Japan
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17
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Yuan JJ, Jin RH. Direct generation of silica nanowire-based thin film on various substrates with tunable surface nanostructure and extreme repellency toward complex liquids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:9588-9596. [PMID: 21692517 DOI: 10.1021/la201645b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report our new achievement on the direct generation of linear polyethylenimine@silica hybrid and silica thin films on various substrates, which is composed of 10 nm nanowire silica structure with tunable micro/nano hierarchical surface morphology. We found that a process for the rapid and controlled self-assembly of crystalline template layer of linear polyethylenimine on substrate surface is critical for the formation of ultrathin silica nanowire structure and micro/nano hierarchical morphology, since the template linear polyethylenimine layer directly promotes the hydrolytic condensation of alkoxysilanes. Templated silica mineralization on the self-assembled linear polyethylenimine layer was confirmed by the studies of X-ray photoelectron spectroscopy (XPS) and thin film X-ray diffraction (XRD). The surface of silica nanostructure and hierarchy could be well controlled by simply adjusting the conditions for LPEI assembly, such as the polymer concentrations and substrate surface property. After a simple fluorocarbon modification, the hierarchical silica nanowire thin film demonstrated robust and reliable super-repelling property toward a series of aqueous liquids (such as commercial inkjet (IJ) ink, soy source, milk). Comparative studies clearly confirmed the critical importance of surface hierarchy for enhancing super-repelling property. Moreover, we found that the forcibly formed dirty sports (both wet and dry) from the complexly composed liquids on the super-antiwetting surface could be easily and completely cleaned by simple water drop flow. We expect these tailored nanosurfaces would have the potentials for practical technological applications, such as liquid transferring, self-cleaning, microfluid, and biomedical-related devices.
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Affiliation(s)
- Jian-Jun Yuan
- Synthetic Chemistry Lab., Kawamura Institute of Chemical Research, 631 Sakado, Sakura 285-0078, Japan
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18
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Zhang J, Seeger S. Superoleophobe Silicon-Beschichtungen mit ultrakleinen Abrollwinkeln. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101008] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Zhang J, Seeger S. Superoleophobic Coatings with Ultralow Sliding Angles Based on Silicone Nanofilaments. Angew Chem Int Ed Engl 2011; 50:6652-6. [PMID: 21648031 DOI: 10.1002/anie.201101008] [Citation(s) in RCA: 206] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Junping Zhang
- Physikalisch-Chemisches Institut, Universität Zürich Irchel, Winterthurerstrasse 190, 8057 Zürich, Switzerland
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20
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Ke Q, Zhang S, Tang T, Wang S, Jing H. Intrinsic dew-enhancing ability of SiO2/PODS materials. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2010.12.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Yuan JJ, Jin RH. Polyamine@silica hybrid nanograss: biomimetic fabrication, structure characterization and surface functionalization. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm11157d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Rabe M, Verdes D, Seeger S. Understanding Cooperative Protein Adsorption Events at the Microscopic Scale: A Comparison between Experimental Data and Monte Carlo Simulations. J Phys Chem B 2010; 114:5862-9. [DOI: 10.1021/jp909601m] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michael Rabe
- Institute of Physical Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Dorinel Verdes
- Institute of Physical Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Stefan Seeger
- Institute of Physical Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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23
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Ren HX, Chen X, Huang XJ, Im M, Kim DH, Lee JH, Yoon JB, Gu N, Liu JH, Choi YK. A conventional route to scalable morphology-controlled regular structures and their superhydrophobic/hydrophilic properties for biochips application. LAB ON A CHIP 2009; 9:2140-2144. [PMID: 19606289 DOI: 10.1039/b905804d] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We use a conventional and straightforward route to fabricate scalable morphology-controlled regular structures. This route is based on the etching of PDMS microlens array in CF4 and CF4/O2 plasma. PDMS microlens array can be changed to regularly isolated microdot structures array in CF4 plasma. Microbowl shaped structures array can be reached in CF4/O2 plasma. Moreover, a set of structures after CF4 plasma treatment display superhydrophobicity, while a set of structures after CF4/O2 plasma treatment present hydrophilicity. DNA molecules can be readily enriched on the hydrophilic surface. We believe that the regular structure array surfaces provide a useful inspiration towards biomolecular detection and transportation in biochips.
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Affiliation(s)
- Hong-Xuan Ren
- School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210098, PR China
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24
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Leibner ES, Barnthip N, Chen W, Baumrucker CR, Badding JV, Pishko M, Vogler EA. Superhydrophobic effect on the adsorption of human serum albumin. Acta Biomater 2009; 5:1389-98. [PMID: 19135420 DOI: 10.1016/j.actbio.2008.11.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2008] [Revised: 11/06/2008] [Accepted: 11/11/2008] [Indexed: 11/17/2022]
Abstract
Analytical protocol greatly influences the measurement of human serum albumin (HSA) adsorption to commercial expanded polytetrafluororethylene (ePTFE) exhibiting superhydrophobic wetting properties. Degassing of buffer solutions and evacuation of ePTFE adsorbent to remove trapped air immediately prior to contact with protein solutions are shown to be essential. Results obtained with ePTFE as a prototypical superhydrophobic test material suggest that vacuum degassing should be applied in the measurement of protein adsorption to any surface exhibiting superhydrophobicity. Solution depletion quantified using radiometry ((125)I-labeled HSA) or electrophoresis yield different measures of adsorption, with nearly 4-fold higher surface concentrations of unlabeled HSA measured by the electrophoresis method. This outcome is attributed to the influence of the radiolabel on HSA hydrophilicity which decreases radiolabeled-HSA affinity for a hydrophobic adsorbent in comparison to unlabeled HSA. These results indicate that radiometry underestimates the actual amount of protein adsorbed to a particular material. Removal of radiolabeled HSA adsorbed to ePTFE by 3x serial buffer rinses also shows that the remaining "bound fraction" was about 35% lower than the amount measured by radiometric depletion. This observation implies that measurement of protein bound after surface rinsing significantly underestimates the actual amount of protein concentrated by adsorption into the surface region of a protein-contacting material.
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Affiliation(s)
- Evan S Leibner
- Department of Chemistry, The Pennsylvania State University, University Park, PA 16802, USA
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25
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Riehemann K, Schneider S, Luger T, Godin B, Ferrari M, Fuchs H. Nanomedizin - Herausforderung und Perspektiven. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200802585] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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26
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Riehemann K, Schneider SW, Luger TA, Godin B, Ferrari M, Fuchs H. Nanomedicine--challenge and perspectives. Angew Chem Int Ed Engl 2009; 48:872-97. [PMID: 19142939 PMCID: PMC4175737 DOI: 10.1002/anie.200802585] [Citation(s) in RCA: 831] [Impact Index Per Article: 55.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The application of nanotechnology concepts to medicine joins two large cross-disciplinary fields with an unprecedented societal and economical potential arising from the natural combination of specific achievements in the respective fields. The common basis evolves from the molecular-scale properties relevant to the two fields. Local probes and molecular imaging techniques allow surface and interface properties to be characterized on a nanometer scale at predefined locations, while chemical approaches offer the opportunity to elaborate and address surfaces, for example, for targeted drug delivery, enhanced biocompatibility, and neuroprosthetic purposes. However, concerns arise in this cross-disciplinary area about toxicological aspects and ethical implications. This Review gives an overview of selected recent developments and applications of nanomedicine.
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Affiliation(s)
- Kristina Riehemann
- Dr. K. Riehemann, Prof. Dr. H. Fuchs, Center for Nanotechnology (CeNTech) and Physical Institute; WWU Münster, Wilhelm Klemm-Str. 10, 48149 Münster, Germany, Fax:+49 (251) 83 33602, , Homepage: http://www.uni-muenster.de/Physik.PI/Fuchs/
| | | | | | | | | | - Harald Fuchs
- Dr. K. Riehemann, Prof. Dr. H. Fuchs, Center for Nanotechnology (CeNTech) and Physical Institute; WWU Münster, Wilhelm Klemm-Str. 10, 48149 Münster, Germany, Fax:+49 (251) 83 33602, , Homepage: http://www.uni-muenster.de/Physik.PI/Fuchs/
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27
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Iwasaki Y, Omichi Y, Iwata R. Site-specific dense immobilization of antibody fragments on polymer brushes supported by silicone nanofilaments. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:8427-8430. [PMID: 18627182 DOI: 10.1021/la801327a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
For site-specific dense immobilization of antibodies on a solid support, we prepared phosphorylcholine copolymer brushes on silicone nanofilaments. The nanofilaments were prepared on a silicon wafer by treatment with trichloromethylsilane (MeSiCl 3). To generate Si-OH groups on the nanofilaments, O 2 plasma was irradiated on the surface. Initiators for atom transfer radical polymerization (ATRP) were then coupled on the filaments. Phosphorylcholine copolymer brushes were prepared by a "grafting from" process, and pyridyl disulfide groups were introduced into the polymer chains. F(ab') fragments were then specifically immobilized onto these surfaces via a thiol-disulfide interchange reaction. The amount of antibodies immobilized on the nanofilament-supported copolymer brushes was approximately 65 times greater than that on smooth wafer-supported copolymer brushes.
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Affiliation(s)
- Yasuhiko Iwasaki
- Departments of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita-shi, Osaka, Japan.
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28
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Messina GML, Satriano C, Marletta G. Confined protein adsorption into nanopore arrays fabricated by colloidal-assisted polymer patterning. Chem Commun (Camb) 2008:5031-3. [DOI: 10.1039/b809664c] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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