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Rimmer S, Spencer P, Nocita D, Sweeney J, Harrison M, Swift T. Chain-Extendable Crosslinked Hydrogels Using Branching RAFT Modification. Gels 2023; 9:gels9030235. [PMID: 36975685 PMCID: PMC10048396 DOI: 10.3390/gels9030235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/09/2023] [Accepted: 03/13/2023] [Indexed: 03/19/2023] Open
Abstract
Functional crosslinked hydrogels were prepared from 2-hydroxyethyl methacrylate (HEMA) and acrylic acid (AA). The acid monomer was incorporated both via copolymerization and chain extension of a branching, reversible addition–fragmentation chain-transfer agent incorporated into the crosslinked polymer gel. The hydrogels were intolerant to high levels of acidic copolymerization as the acrylic acid weakened the ethylene glycol dimethacrylate (EGDMA) crosslinked network. Hydrogels made from HEMA, EGDMA and a branching RAFT agent provide the network with loose-chain end functionality that can be retained for subsequent chain extension. Traditional methods of surface functionalization have the downside of potentially creating a high volume of homopolymerization in the solution. Branching RAFT comonomers act as versatile anchor sites by which additional polymerization chain extension reactions can be carried out. Acrylic acid grafted onto HEMA–EGDMA hydrogels showed higher mechanical strength than the equivalent statistical copolymer networks and was shown to have functionality as an electrostatic binder of cationic flocculants.
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Affiliation(s)
- Stephen Rimmer
- Department of Chemistry, University of Sheffield, Sheffield S10 2JA, UK
- School of Chemistry and Biosciences, University of Bradford, Bradford BD7 1DP, UK
- Correspondence: (S.R.); (T.S.); Tel.: +44-0127-423-2323 (S.R. & T.S.)
| | - Paul Spencer
- Faculty of Engineering, University of Bradford, Bradford BD7 1DP, UK
| | - Davide Nocita
- Faculty of Engineering, University of Bradford, Bradford BD7 1DP, UK
| | - John Sweeney
- Faculty of Engineering, University of Bradford, Bradford BD7 1DP, UK
| | - Marcus Harrison
- Department of Chemistry, University of Sheffield, Sheffield S10 2JA, UK
| | - Thomas Swift
- Department of Chemistry, University of Sheffield, Sheffield S10 2JA, UK
- School of Chemistry and Biosciences, University of Bradford, Bradford BD7 1DP, UK
- Correspondence: (S.R.); (T.S.); Tel.: +44-0127-423-2323 (S.R. & T.S.)
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2
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Arkaban H, Barani M, Akbarizadeh MR, Pal Singh Chauhan N, Jadoun S, Dehghani Soltani M, Zarrintaj P. Polyacrylic Acid Nanoplatforms: Antimicrobial, Tissue Engineering, and Cancer Theranostic Applications. Polymers (Basel) 2022; 14:1259. [PMID: 35335590 PMCID: PMC8948866 DOI: 10.3390/polym14061259] [Citation(s) in RCA: 68] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 03/13/2022] [Accepted: 03/16/2022] [Indexed: 02/01/2023] Open
Abstract
Polyacrylic acid (PAA) is a non-toxic, biocompatible, and biodegradable polymer that gained lots of interest in recent years. PAA nano-derivatives can be obtained by chemical modification of carboxyl groups with superior chemical properties in comparison to unmodified PAA. For example, nano-particles produced from PAA derivatives can be used to deliver drugs due to their stability and biocompatibility. PAA and its nanoconjugates could also be regarded as stimuli-responsive platforms that make them ideal for drug delivery and antimicrobial applications. These properties make PAA a good candidate for conventional and novel drug carrier systems. Here, we started with synthesis approaches, structure characteristics, and other architectures of PAA nanoplatforms. Then, different conjugations of PAA/nanostructures and their potential in various fields of nanomedicine such as antimicrobial, anticancer, imaging, biosensor, and tissue engineering were discussed. Finally, biocompatibility and challenges of PAA nanoplatforms were highlighted. This review will provide fundamental knowledge and current information connected to the PAA nanoplatforms and their applications in biological fields for a broad audience of researchers, engineers, and newcomers. In this light, PAA nanoplatforms could have great potential for the research and development of new nano vaccines and nano drugs in the future.
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Affiliation(s)
- Hassan Arkaban
- Department of Chemistry, University of Isfahan, Isfahan 8174673441, Iran;
| | - Mahmood Barani
- Medical Mycology and Bacteriology Research Center, Kerman University of Medical Sciences, Kerman 7616913555, Iran
| | - Majid Reza Akbarizadeh
- Department of Pediatric, Amir Al Momenin Hospital, Zabol University of Medical Sciences, Zabol 9861663335, Iran
| | - Narendra Pal Singh Chauhan
- Department of Chemistry, Faculty of Science, Bhupal Nobles’s University, Udaipur 313002, Rajasthan, India;
| | - Sapana Jadoun
- Department of Analytical and Inorganic Chemistry, Faculty of Sciences, University of Concepcion, Edmundo Larenas 129, Concepcion 4070371, Chile;
| | | | - Payam Zarrintaj
- School of Chemical Engineering, Oklahoma State University, 420 Engineering North, Stillwater, OK 74078, USA;
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3
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Anthi J, Kolivoška V, Holubová B, Vaisocherová-Lísalová H. Probing polymer brushes with electrochemical impedance spectroscopy: a mini review. Biomater Sci 2021; 9:7379-7391. [PMID: 34693954 DOI: 10.1039/d1bm01330k] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Polymer brushes are frequently used as surface-tethered antifouling layers in biosensors to improve sensor surface-analyte recognition in the presence of abundant non-target molecules in complex biological samples by suppressing nonspecific interactions. However, because brushes are complex systems highly responsive to changes in their surrounding environment, studying their properties remains a challenge. Electrochemical impedance spectroscopy (EIS) is an emerging method in this context. In this mini review, we aim to elucidate the potential of EIS for investigating the physicochemical properties and structural aspects of polymer brushes. The application of EIS in brush-based biosensors is also discussed. Most common principles employed in these biosensors are presented, as well as interpretation of EIS data obtained in such setups. Overall, we demonstrate that the EIS-polymer brush pairing has a considerable potential for providing new insights into brush functionalities and designing highly sensitive and specific biosensors.
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Affiliation(s)
- Judita Anthi
- Institute of Physics of the CAS, Na Slovance 2, 182 21 Prague, Czech Republic. .,Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 3, 16628 Prague, Czech Republic
| | - Viliam Kolivoška
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3, 182 23 Prague, Czech Republic.
| | - Barbora Holubová
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 3, 16628 Prague, Czech Republic
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4
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Wang L, Schubert US, Hoeppener S. Surface chemical reactions on self-assembled silane based monolayers. Chem Soc Rev 2021; 50:6507-6540. [PMID: 34100051 DOI: 10.1039/d0cs01220c] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
In this review, we aim to update our review "Chemical modification of self-assembled silane-based monolayers by surface reactions" which was published in 2010 and has developed into an important guiding tool for researchers working on the modification of solid substrate surface properties by chemical modification of silane-based self-assembled monolayers. Due to the rapid development of this field of research in the last decade, the utilization of chemical functionalities in self-assembled monolayers has been significantly improved and some new processes were introduced in chemical surface reactions for tailoring the properties of solid substrates. Thus, it is time to update the developments in the surface functionalization of silane-based molecules. Hence, after a short introduction on self-assembled monolayers, this review focuses on a series of chemical reactions, i.e., nucleophilic substitution, click chemistry, supramolecular modification, photochemical reaction, and other reactions, which have been applied for the modification of hydroxyl-terminated substrates, like silicon and glass, which have been reported during the last 10 years.
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Affiliation(s)
- Limin Wang
- Laboratory of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University, Humboldtstr. 10, 07743 Jena, Germany
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5
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Ma Q, Liu T, Xu R, Du Q, Gao P, Xia F. Revealing the Critical Role of Probe Grafting Density in Nanometric Confinement in Ionic Signal via an Experimental and Theoretical Study. Anal Chem 2021; 93:1984-1990. [DOI: 10.1021/acs.analchem.0c03090] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Qun Ma
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China
| | - Tianle Liu
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China
| | - Ranhao Xu
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China
| | - Qiujiao Du
- School of Mathematics and Physics, China University of Geosciences, Wuhan 430074, P. R. China
| | - Pengcheng Gao
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China
| | - Fan Xia
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China
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6
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Surface Modification of TFC-PA RO Membrane by Grafting Hydrophilic pH Switchable Poly(Acrylic Acid) Brushes. ADVANCES IN POLYMER TECHNOLOGY 2020. [DOI: 10.1155/2020/8281058] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The grafting of pH-responsive poly(acrylic acid) (PAA) brushes was carried out on the surface of a commercial TFC-PA membrane using surface-initiated atom transfer radical polymerization (SI-ATRP). Poly(t-butyl acrylate) was polymerized through the SI-ATRP method followed by its acid hydrolysis to form PAA hydrophilic polymer brushes. Surface morphology, permeation flux, salt rejection, and pore sizes were investigated. The contact angle for water was reduced from 50° for a pristine membrane to 27° for the modified membrane due to a modification with the hydrophilic functional group and its brush on membrane surfaces. The flux rate also increased noticeably at lower pH values relative to higher pH for the modified membranes, while the flux remains stable in the case of pristine TFC-PA membranes. There is slight transition in the water flux rate that was also observed when going from pH values of 3 to 5. This was attributed to the pH-responsive conformational changes for the grafted PAA brushes. At these pH values, ionization of the COOH group takes place below and above pKa to influence the effective pore dimension of the modified membranes. At a lower pH value, the PAA brushes seem to permit tight structure conformation resulting in larger pore sizes and hence more flux. On the other hand, at higher pH values, PAA brushes appeared to be in extended conformation to induce smaller pore sizes and result in less flux. Further, pH values were observed to not significantly affect the NaCl salt rejection with values observed in between 98.8% and 95% and close to that of the pristine TFC-PA membranes. These experimental results are significant and have immediate implication for advances in polymer technology to design and modify the “switchable membrane surfaces” with controllable charge distribution and surface wettability, as well as regulation of water flux and salt.
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7
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Rusen E, Raluca Şomoghi, Busuioc C, Diacon A. Hydrophilic modification of polyvinyl chloride with polyacrylic acid using ATRP. RSC Adv 2020; 10:35692-35700. [PMID: 35517097 PMCID: PMC9057009 DOI: 10.1039/d0ra05936f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 09/09/2020] [Indexed: 12/27/2022] Open
Abstract
The aim of this paper was the synthesis of amphiphilic copolymers by employing an atom transfer radical polymerization (ATRP), control polymerization “grafting from” method, initiated both on the surface of an iodinated polyvinyl chloride (PVC–I) membrane and in solution. The iodination of PVC was performed through a Conant-Finkelstein reaction that afforded a 30% molar transformation. Using the contact angle measurements, we highlighted the higher degree of grafting polyacrylic acid (PAA) in the case of solution polymerization, the polar fraction increasing significantly. The micromembrane obtained by surface grafting has pores with a homogenous distribution, which contain –COOH functional groups and with a pore size that decreased about 10 times compared to the initial membrane. The TGA analysis highlighted the thermal resistance changes that the polymers registered. Amphiphilic copolymers were synthesized through a “grafting from” technique using an atom transfer radical polymerization (ATRP) initiated from the surface of an iodinated polyvinyl chloride (PVC-I) membrane and in solution.![]()
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Affiliation(s)
- Edina Rusen
- University POLITEHNICA of Bucharest
- Faculty of Applied Chemistry and Materials Science
- Bucharest
- Romania
| | - Raluca Şomoghi
- National Research and Development Institute for Chemistry and Petrochemistry – ICECHIM
- Bucharest
- Romania
| | - Cristina Busuioc
- University POLITEHNICA of Bucharest
- Faculty of Applied Chemistry and Materials Science
- Bucharest
- Romania
| | - Aurel Diacon
- University POLITEHNICA of Bucharest
- Faculty of Applied Chemistry and Materials Science
- Bucharest
- Romania
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8
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Badoux M, Billing M, Klok HA. Polymer brush interfaces for protein biosensing prepared by surface-initiated controlled radical polymerization. Polym Chem 2019. [DOI: 10.1039/c9py00163h] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article discusses protein-binding polymer brushes and the various strategies that can be used to immobilize proteins on these films.
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Affiliation(s)
- Michael Badoux
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimique
- Laboratoire des Polymères
- École Polytechnique Fédérale de Lausanne (EPFL)
- Bâtiment MXD
- CH-1015 Lausanne
| | - Mark Billing
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimique
- Laboratoire des Polymères
- École Polytechnique Fédérale de Lausanne (EPFL)
- Bâtiment MXD
- CH-1015 Lausanne
| | - Harm-Anton Klok
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimique
- Laboratoire des Polymères
- École Polytechnique Fédérale de Lausanne (EPFL)
- Bâtiment MXD
- CH-1015 Lausanne
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9
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Du Y, Li C, Jin J, Li C, Jiang W. Surface modification of polyisobutylene via grafting amino acid-based poly (acryloyl-6-aminocaproic acid) as multifunctional material. Colloids Surf B Biointerfaces 2018; 161:73-82. [PMID: 29054046 DOI: 10.1016/j.colsurfb.2017.10.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 09/07/2017] [Accepted: 10/11/2017] [Indexed: 12/14/2022]
Abstract
Amino acid-based P(acryloyl-6-aminocaproic acid) (PAACA) brushes were fabricated on polyisobutylene (PIB) surface combined with plasma pre-treatment and UV-induced grafting polymerization to construct an antifouling and functional material. The hydrophilicity and hemocompatibility of PIB were largely improved by surface modification of AACA, which were confirmed by water contact angle and platelet adhesion, respectively. PAACA brushes were precisely located onto the surface of PIB to create a patterned PIB-g-PAACA structure, and then the carboxyl groups on PAACA was activated to immobilize functional protein-Concanavalin A (Con A). The obtained Con A-coupled microdomains could further capture erythrocytes. This method developed a platform on commercial PIB surface via amino acid-based polymer brushes which had a promising application in drug delivery and disease diagnosis.
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Affiliation(s)
- Yanqiu Du
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Chunming Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China
| | - Jing Jin
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China.
| | - Chao Li
- Department of Infection, The Affiliated Hospital of QingDao University, QingDao, 266003, PR China
| | - Wei Jiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China.
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10
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Wu Y, Nizam MN, Ding X, Xu FJ. Rational Design of Peptide-Functionalized Poly(Methacrylic Acid) Brushes for On-Chip Detection of Protease Biomarkers. ACS Biomater Sci Eng 2017; 4:2018-2025. [DOI: 10.1021/acsbiomaterials.7b00584] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yeping Wu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology) Ministry of Education, Beijing 100029, China
- Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Muhammad Naeem Nizam
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology) Ministry of Education, Beijing 100029, China
- Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiaokang Ding
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology) Ministry of Education, Beijing 100029, China
- Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Fu-Jian Xu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology) Ministry of Education, Beijing 100029, China
- Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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11
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Martin FA, Marconi D, Neamtu S, Radu T, Florescu M, Turcu R, Lar C, Hădade ND, Grosu I, Turcu I. “Click” access to multilayer functionalized Au surface: A terpyridine patterning example. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:1343-1350. [DOI: 10.1016/j.msec.2017.03.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 01/30/2017] [Accepted: 03/03/2017] [Indexed: 11/24/2022]
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12
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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: 598] [Impact Index Per Article: 85.4] [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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13
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Wu Y, Wang A, Ding X, Xu FJ. Versatile Functionalization of Poly(methacrylic acid) Brushes with Series of Proteolytically Cleavable Peptides for Highly Sensitive Protease Assay. ACS APPLIED MATERIALS & INTERFACES 2017; 9:127-135. [PMID: 27959488 DOI: 10.1021/acsami.6b12033] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The development of new materials for fast and sensitive protease assay is in demand for timely diagnosis of diseases, such as cardiovascular disease, cancers, and Alzheimer disease. Herein, poly(methacrylic acid) (PMAA) brushes were synthesized from the surfaces of silica nanoparticles via surface-initiated atom transfer radical polymerization (ATRP), and functionalized with series of proteolytically cleavable peptides for highly sensitive protease assay. Upon the proteolytic cleavage of the peptides, a short peptide fragment with fluorescent tag (GGK-FITC) is released to the solution, which can be easily detected with a benchtop fluorescence microscope. The grafting densities of PMAA brushes and peptides can be readily tuned by controlling the monomer concentrations of sodium methacrylate in the ATRP reaction. Because of the three-dimensional architecture of PMAA brushes, the loading amount of peptides can reach 21.4% of the total weight of functionalized silica particles (22.4 peptides/nm2), which is much higher than direct immobilization on silica nanoparticles without polymer brushes. Because of the high loading density of peptides, the limit of detection (LOD) of trypsin can reach 1.4 pM in buffer solution or 2.6 nM in nondiluted serum. By rational design of peptide substrates, the peptide-functionalized PMAA brushes can be readily expanded to detect other proteases, such as matrix metalloproteinase-2 (MMP-2), a virtual biomarker for many cancers, with an LOD of 1.1 pM. The proteolytically cleavable peptide-functionalized PMAA brushes offer a starting point for fast and sensitive protease assay.
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Affiliation(s)
- Yeping Wu
- State Key Laboratory of Chemical Resource Engineering, §Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, and ⊥Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology , Beijing 100029, China
| | - Anzhi Wang
- State Key Laboratory of Chemical Resource Engineering, §Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, and ⊥Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology , Beijing 100029, China
| | - Xiaokang Ding
- State Key Laboratory of Chemical Resource Engineering, §Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, and ⊥Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology , Beijing 100029, China
| | - Fu-Jian Xu
- State Key Laboratory of Chemical Resource Engineering, §Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, and ⊥Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology , Beijing 100029, China
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14
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Lilge I, Schönherr H. Block Copolymer Brushes for Completely Decoupled Control of Determinants of Cell-Surface Interactions. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607078] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Inga Lilge
- Physical Chemistry I and Research Center of Micro and Nanochemistry and Engineering (Cμ); University of Siegen; Adolf-Reichwein Strasse 2 57076 Siegen Germany
| | - Holger Schönherr
- Physical Chemistry I and Research Center of Micro and Nanochemistry and Engineering (Cμ); University of Siegen; Adolf-Reichwein Strasse 2 57076 Siegen Germany
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15
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Lilge I, Schönherr H. Block Copolymer Brushes for Completely Decoupled Control of Determinants of Cell-Surface Interactions. Angew Chem Int Ed Engl 2016; 55:13114-13117. [DOI: 10.1002/anie.201607078] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 08/18/2016] [Indexed: 02/02/2023]
Affiliation(s)
- Inga Lilge
- Physical Chemistry I and Research Center of Micro and Nanochemistry and Engineering (Cμ); University of Siegen; Adolf-Reichwein Strasse 2 57076 Siegen Germany
| | - Holger Schönherr
- Physical Chemistry I and Research Center of Micro and Nanochemistry and Engineering (Cμ); University of Siegen; Adolf-Reichwein Strasse 2 57076 Siegen Germany
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16
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Akkilic N, Molenaar R, Claessens MMAE, Blum C, de Vos WM. Monitoring the Switching of Single BSA-ATTO 488 Molecules Covalently End-Attached to a pH-Responsive PAA Brush. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:8803-8811. [PMID: 27525503 DOI: 10.1021/acs.langmuir.6b01064] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We describe a novel combination of a responsive polymer brush and a fluorescently labeled biomolecule, where the position of the biomolecule can be switched from inside to outside the brush and vice versa by a change in pH. For this, we grafted ultrathin, amino-terminated poly(acrylic acid) brushes to glass and silicon substrates. Individual bovine serum albumin (BSA) molecules labeled with fluorophore ATTO 488 were covalently end-attached to the polymers in this brush using a bis-N-succinimidyl-(pentaethylene glycol) linker. We investigated the dry layer properties of the brush-protein ensemble, and it is swelling behavior using spectroscopic ellipsometry. Total internal reflection fluorescence (TIRF) microscopy enabled us to study the distance-dependent switching of the fluorescently labeled protein molecules. The fluorescence emission from the labeled proteins ceased (out-state) when the polymer chains stretched away from the interface under basic pH conditions, and fluorescence recurred (in-state) when the chains collapsed under acidic conditions. Moreover, TIRF allowed us to study the fluorescence switching behavior of fluorescently labeled BSA molecules down to the single-molecule level, and we demonstrate that this switching is fast but that the exact intensity during the in-state is the result of a more random process. Control experiments verify that the switching behavior is directly correlated to the responsive behavior of the polymer brush. We propose this system as a platform for switchable sensor applications but also as a method to study the swelling and collapse of individual polymer chains in a responsive polymer brush.
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Affiliation(s)
- Namik Akkilic
- Membrane Science and Technology, and ‡Nanobiophysics, Mesa+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Robert Molenaar
- Membrane Science and Technology, and ‡Nanobiophysics, Mesa+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Mireille M A E Claessens
- Membrane Science and Technology, and ‡Nanobiophysics, Mesa+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Christian Blum
- Membrane Science and Technology, and ‡Nanobiophysics, Mesa+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Wiebe M de Vos
- Membrane Science and Technology, and ‡Nanobiophysics, Mesa+ Institute for Nanotechnology, University of Twente , P.O. Box 217, 7500 AE Enschede, The Netherlands
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17
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Nietzold C, Dietrich P, Lippitz A, Panne U, Unger W. Cyclodextrin - ferrocene host - guest complexes on silicon oxide surfaces. SURF INTERFACE ANAL 2016. [DOI: 10.1002/sia.5958] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- C. Nietzold
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87; Berlin 12205 Germany
| | - P. M. Dietrich
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87; Berlin 12205 Germany
| | - A. Lippitz
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87; Berlin 12205 Germany
| | - U. Panne
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87; Berlin 12205 Germany
| | - W. E. S. Unger
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87; Berlin 12205 Germany
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18
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Wiarachai O, Vilaivan T, Iwasaki Y, Hoven VP. Clickable and Antifouling Platform of Poly[(propargyl methacrylate)-ran-(2-methacryloyloxyethyl phosphorylcholine)] for Biosensing Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:1184-1194. [PMID: 26695478 DOI: 10.1021/acs.langmuir.5b02727] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A functional copolymer platform, namely, poly[(propargyl methacrylate)-ran-(2-methacryloyloxyethyl phosphorylcholine)] (PPgMAMPC), was synthesized by reversible addition-fragmentation chain-transfer polymerization. In principle, the alkyne moiety of propargyl methacrylate (PgMA) should serve as an active site for binding azide-containing molecules via a click reaction, i.e., Cu-catalyzed azide/alkyne cycloaddition (CuAAC), and 2-methacryloyloxyethyl phosphorylcholine (MPC), the hydrophilic monomeric unit, should enable the copolymer to suppress nonspecific adsorption. The copolymers were characterized using Fourier transform infrared (FTIR) and (1)H NMR spectroscopies. Thiol-terminated, PPgMAMPC-SH, obtained by aminolysis of PPgMAMPC, was immobilized on a gold-coated substrate using a "grafting to" approach via self-assembly. Azide-containing species, namely, biotin and peptide nucleic acid (PNA), were then immobilized on the alkyne-containing copolymeric platform via CuAAC. The potential use of surface-attached PPgMAMPC in biosensing applications was shown by detection of specific target molecules, i.e., streptavidin (SA) and DNA, by the developed sensing platform using a surface plasmon resonance technique. The copolymer composition strongly influenced the performance of the developed sensing platform in terms of signal-to-noise ratio in the case of the biotin-SA system and hybridization efficiency and mismatch discrimination for the PNA-DNA system.
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Affiliation(s)
| | | | - Yasuhiko Iwasaki
- Faculty of Chemistry, Materials and Bioengineering, Kansai University , 3-3-35 Yamate-cho, Suita-shi, Osaka 564-8680, Japan
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19
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Lilge I, Schönherr H. Control of Cell Attachment and Spreading on Poly(acrylamide) Brushes with Varied Grafting Density. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:838-847. [PMID: 26771447 DOI: 10.1021/acs.langmuir.5b04168] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
To achieve spatial control of fibroblast cell attachment and spreading on a biocompatible polymer coating, the effect of poly(acrylamide) (PAAm) brushes with varied grafting density was investigated. The synthesis of the brushes was performed by surface-initiated atom transfer radical polymerization (SI-ATRP). Gold substrates were modified with binary self-assembled monolayers (SAMs) of an initiator and 16-mercaptohexadecanoic acid (MHDA) as an "inert" thiol to initiate the ATRP of AAm. By using different mixtures for the binary SAMs, a series of polymer brushes with varied grafting densities were prepared. The fractional coverage of surface bound initiator was determined by grazing incidence Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), time-of-flight secondary ion mass spectrometry (ToF-SIMS), and contact angle measurements. A linear relationship between the Br/S ratio determined by XPS and ToF-SIMS versus the fraction of initiator on the surface determined by water contact angle measurements was observed. The varied initiation concentration on the gold substrates yielded PAAm brushes with different thicknesses, indicating a transition from mushroom to brush regimes with increasing grafting density. Thereby we achieved exquisite control of the degree of cell adhesion. Cell attachment experiments with NIH 3T3 fibroblast cells revealed cell spreading on PAAm brushes with low grafting densities (initiator fractional coverage <0.2) as well as a complete passivation by polymer brushes with higher grafting densities.
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Affiliation(s)
- Inga Lilge
- Physical Chemistry I, Department of Chemistry and Biology & Research Center of Micro and Nanochemistry and Engineering (Cμ), University of Siegen , Adolf-Reichwein-Strasse 2, 57076 Siegen, Germany
| | - Holger Schönherr
- Physical Chemistry I, Department of Chemistry and Biology & Research Center of Micro and Nanochemistry and Engineering (Cμ), University of Siegen , Adolf-Reichwein-Strasse 2, 57076 Siegen, Germany
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20
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Grazon C, Rieger J, Beaunier P, Méallet-Renault R, Clavier G. Fluorescent core–shell nanoparticles and nanocapsules using comb-like macromolecular RAFT agents: synthesis and functionalization thereof. Polym Chem 2016. [DOI: 10.1039/c6py00646a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ultra-bright fluorescent nanoparticles with comb-like shells based on PEG and acrylic acid were obtained in water using an additive-free miniemulsion polymerization process.
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Affiliation(s)
- Chloé Grazon
- PPSM
- ENS Cachan
- CNRS
- Université Paris-Saclay
- 94235 Cachan
| | - Jutta Rieger
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Institut Parisien de Chimie Moléculaire
- Team: Chimie des Polymères
| | - Patricia Beaunier
- Sorbonne Universités
- UPMC Université Paris 06
- UMR 7197-CNRS
- Laboratoire de Réactivité de Surface (LRS)
- F-75252 Paris Cedex 05
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21
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Akkilic N, Leermakers FAM, de Vos WM. Responsive polymer brushes for controlled nanoparticle exposure. NANOSCALE 2015; 7:17871-17878. [PMID: 26462550 DOI: 10.1039/c5nr05150a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We propose the design of a novel mixed polymer brush system that could act as a selective sensor with a distinct on-off switch. In the proposed system, a (single) nanoparticle (such as an antibody) is end-attached to a responsive chain, which is surrounded by a brush of nonresponsive chains. The collapse of the responsive chain leads to a protected state, where the nanoparticle is hidden in the polymer brush, while swelling of the responsive chain brings the nanoparticle outside of the brush into an exposed and active state. We investigate this system by numerical self-consistent field theory and predict a first-order like transition between the active state and the protective state at a critical decrease in solvent quality for the responsive chain. We show that by careful design of the brush parameters such as grafting density and chain length, for a given particle size, it is possible to fine-tune the desired switching mechanism.
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Affiliation(s)
- Namik Akkilic
- Membrane Science and Technology, Mesa+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.
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22
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Sangsuwan A, Narupai B, Sae-ung P, Rodtamai S, Rodthongkum N, Hoven VP. Patterned Poly(acrylic acid) Brushes Containing Gold Nanoparticles for Peptide Detection by Surface-Assisted Laser Desorption/Ionization Mass Spectrometry. Anal Chem 2015; 87:10738-46. [DOI: 10.1021/acs.analchem.5b00734] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Arunee Sangsuwan
- Program in Petrochemistry and Polymer Science, Faculty of Science, ‡Organic Synthesis
Research Unit, Department of Chemistry, Faculty of Science, §Program in Macromolecular
Science, Faculty of Science, and ∥Metallurgy and Materials Science Research
Institute, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Benjaporn Narupai
- Program in Petrochemistry and Polymer Science, Faculty of Science, ‡Organic Synthesis
Research Unit, Department of Chemistry, Faculty of Science, §Program in Macromolecular
Science, Faculty of Science, and ∥Metallurgy and Materials Science Research
Institute, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Pornpen Sae-ung
- Program in Petrochemistry and Polymer Science, Faculty of Science, ‡Organic Synthesis
Research Unit, Department of Chemistry, Faculty of Science, §Program in Macromolecular
Science, Faculty of Science, and ∥Metallurgy and Materials Science Research
Institute, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Sasithon Rodtamai
- Program in Petrochemistry and Polymer Science, Faculty of Science, ‡Organic Synthesis
Research Unit, Department of Chemistry, Faculty of Science, §Program in Macromolecular
Science, Faculty of Science, and ∥Metallurgy and Materials Science Research
Institute, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Nadnudda Rodthongkum
- Program in Petrochemistry and Polymer Science, Faculty of Science, ‡Organic Synthesis
Research Unit, Department of Chemistry, Faculty of Science, §Program in Macromolecular
Science, Faculty of Science, and ∥Metallurgy and Materials Science Research
Institute, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Voravee P. Hoven
- Program in Petrochemistry and Polymer Science, Faculty of Science, ‡Organic Synthesis
Research Unit, Department of Chemistry, Faculty of Science, §Program in Macromolecular
Science, Faculty of Science, and ∥Metallurgy and Materials Science Research
Institute, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
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23
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Zhang X, Daaboul GG, Spuhler PS, Freedman DS, Yurt A, Ahn S, Avci O, Ünlü MS. Nanoscale characterization of DNA conformation using dual-color fluorescence axial localization and label-free biosensing. Analyst 2015; 139:6440-9. [PMID: 25340741 DOI: 10.1039/c4an01425a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Quantitative determination of the density and conformation of DNA molecules tethered to the surface can help optimize and understand DNA nanosensors and nanodevices, which use conformational or motional changes of surface-immobilized DNA for detection or actuation. We present an interferometric sensing platform that combines (i) dual-color fluorescence spectroscopy for precise axial co-localization of two fluorophores attached at different nucleotides of surface-immobilized DNA molecules and (ii) independent label-free quantification of biomolecule surface density at the same site. Using this platform, we examined the conformation of DNA molecules immobilized on a three-dimensional polymeric surface and demonstrated simultaneous detection of DNA conformational change and binding in real-time. These results demonstrate that independent quantification of both surface density and molecular nanoscale conformation constitutes a versatile approach for nanoscale solid-biochemical interface investigations and molecular binding assays.
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Affiliation(s)
- Xirui Zhang
- Department of Biomedical Engineering, Boston University, 44 Cummington Mall, Boston, MA 02215, USA.
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24
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Shakiba A, Jamison AC, Lee TR. Poly(L-lysine) Interfaces via Dual Click Reactions on Surface-Bound Custom-Designed Dithiol Adsorbates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:6154-63. [PMID: 25961498 DOI: 10.1021/acs.langmuir.5b00877] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Surfaces modified with poly(L-lysine) can be used to immobilize selected biomolecules electrostatically. This report describes the preparation of a set of self-assembled monolayers (SAMs) from three different azide-terminated adsorbates as platforms for performing controlled surface attachments and as a means of determining the parameters that afford stable poly(L-lysine)-modified SAM surfaces having controlled packing densities. A maleimide-terminated alkyne linker was "clicked" to the azide-terminated surfaces via a copper-catalyzed cycloaddition reaction to produce the attachment sites for the polypeptides. A thiol-Michael addition was then used to immobilize cysteine-terminated poly(L-lysine) moieties on the gold surface, avoiding adsorbate self-reactions with this two-step procedure. Each step in this process was analyzed by ellipsometry, X-ray photoelectron spectroscopy, polarization modulation infrared reflection-absorption spectroscopy, and contact angle goniometry to determine which adsorbate structure most effectively produced the targeted polypeptide interface. Additionally, a series of mixed SAMs using an azidoalkanethiol in combination with a normal alkanethiol having an equivalent alkyl chain were prepared to provide data to determine how dilution of the azide reactive site on the SAM surface influences the initial click reaction. Overall, the collected data demonstrate the advantages of an appropriately designed bidentate absorbate and its potential to form effective platforms for biomolecule surface attachment via click reactions.
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Affiliation(s)
- Amin Shakiba
- Departments of Chemistry and Chemical Engineering and the Texas Center for Superconductivity, University of Houston, Houston, Texas 77204-5003, United States
| | - Andrew C Jamison
- Departments of Chemistry and Chemical Engineering and the Texas Center for Superconductivity, University of Houston, Houston, Texas 77204-5003, United States
| | - T Randall Lee
- Departments of Chemistry and Chemical Engineering and the Texas Center for Superconductivity, University of Houston, Houston, Texas 77204-5003, United States
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25
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Mulla MY, Seshadri P, Torsi L, Manoli K, Mallardi A, Ditaranto N, Santacroce MV, Di Franco C, Scamarcio G, Magliulo M. UV crosslinked poly(acrylic acid): a simple method to bio-functionalize electrolyte-gated OFET biosensors. J Mater Chem B 2015; 3:5049-5057. [DOI: 10.1039/c5tb00243e] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A sensitive EGOFET biosensor fabricated by anchoring bioprobes through a UV crosslinked poly(acrylic acid) coating deposited on an organic semiconductor.
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Affiliation(s)
- M. Y. Mulla
- Dipartimento di Chimica
- Università degli Studi di Bari “A. Moro”
- 4-70126 Bari
- Italy
| | - P. Seshadri
- Dipartimento di Chimica
- Università degli Studi di Bari “A. Moro”
- 4-70126 Bari
- Italy
| | - L. Torsi
- Dipartimento di Chimica
- Università degli Studi di Bari “A. Moro”
- 4-70126 Bari
- Italy
| | - K. Manoli
- Dipartimento di Chimica
- Università degli Studi di Bari “A. Moro”
- 4-70126 Bari
- Italy
| | - A. Mallardi
- CNR-IPCF
- Istituto per i Processi Chimico-Fisici
- 4-70126 Bari
- Italy
| | - N. Ditaranto
- Dipartimento di Chimica
- Università degli Studi di Bari “A. Moro”
- 4-70126 Bari
- Italy
| | - M. V. Santacroce
- CNR-IFN and Dipartimento Interateneo di Fisica
- Università degli Studi di Bari “A. Moro”
- 4 70126
- Italy
| | - C. Di Franco
- CNR-IFN and Dipartimento Interateneo di Fisica
- Università degli Studi di Bari “A. Moro”
- 4 70126
- Italy
| | - G. Scamarcio
- CNR-IFN and Dipartimento Interateneo di Fisica
- Università degli Studi di Bari “A. Moro”
- 4 70126
- Italy
| | - M. Magliulo
- Dipartimento di Chimica
- Università degli Studi di Bari “A. Moro”
- 4-70126 Bari
- Italy
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26
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Xie Z, Chen C, Zhou X, Gao T, Liu D, Miao Q, Zheng Z. Massively parallel patterning of complex 2D and 3D functional polymer brushes by polymer pen lithography. ACS APPLIED MATERIALS & INTERFACES 2014; 6:11955-11964. [PMID: 24417672 DOI: 10.1021/am405555e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report the first demonstration of centimeter-area serial patterning of complex 2D and 3D functional polymer brushes by high-throughput polymer pen lithography. Arbitrary 2D and 3D structures of poly(glycidyl methacrylate) (PGMA) brushes are fabricated over areas as large as 2 cm × 1 cm, with a remarkable throughput being 3 orders of magnitudes higher than the state-of-the-arts. Patterned PGMA brushes are further employed as resist for fabricating Au micro/nanostructures and hard molds for the subsequent replica molding of soft stamps. On the other hand, these 2D and 3D PGMA brushes are also utilized as robust and versatile platforms for the immobilization of bioactive molecules to form 2D and 3D patterned DNA oligonucleotide and protein chips. Therefore, this low-cost, yet high-throughput "bench-top" serial fabrication method can be readily applied to a wide range of fields including micro/nanofabrication, optics and electronics, smart surfaces, and biorelated studies.
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Affiliation(s)
- Zhuang Xie
- The Hong Kong Polytechnic University Shenzhen Research Institute , Shenzhen, China
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27
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Shen Q, Liu L, Zhang W. Fabrication of a photocontrolled surface with switchable wettability based on host-guest inclusion complexation and protein resistance. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:9361-9369. [PMID: 25053175 DOI: 10.1021/la500792v] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A novel surface-modification strategy has been developed for the construction of a photocontrolled silicon wafer surface with switchable wettability based on host-guest inclusion complexation. The silicon wafer was first modified by guest molecule azobenzene (Azo) via a silanization reaction. Subsequently, a series of polymers with different polarities were attached to host molecule β-cyclodextrin (β-CD) to prepare β-CD-containing hemitelechelic polymers via click chemistry. Finally, a photocontrolled silicon wafer surface modified with polymers was fabricated by inclusion complexation between β-CD and Azo, and the surface properties of the substrate are dependent on the polymers we used. The elemental composition, surface morphology, and hydrophilic/hydrophobic property of the modified surfaces were characterized by X-ray photoelectron spectroscopy (XPS), atomic force microscope, and contact angle measurements, respectively. The antifouling property of the PEG-functionalized surface was evaluated by a protein adsorption assay using bovine serum albumin, which was also characterized by XPS. The results demonstrate that the surface modified with PEG possesses good protein-resistant properties.
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Affiliation(s)
- Qiongxia Shen
- Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China
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28
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Borozenko O, Ou C, Skene WG, Giasson S. Polystyrene-block-poly(acrylic acid) brushes grafted from silica surfaces: pH- and salt-dependent switching studies. Polym Chem 2014. [DOI: 10.1039/c3py01339a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Malmström J, Nieuwoudt MK, Strover LT, Hackett A, Laita O, Brimble MA, Williams DE, Travas-Sejdic J. Grafting from Poly(3,4-ethylenedioxythiophene): A Simple Route to Versatile Electrically Addressable Surfaces. Macromolecules 2013. [DOI: 10.1021/ma400803j] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jenny Malmström
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington,
New Zealand
| | - Michel K Nieuwoudt
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Lisa T Strover
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington,
New Zealand
| | - Alissa Hackett
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Olivia Laita
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - David E Williams
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington,
New Zealand
| | - Jadranka Travas-Sejdic
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington,
New Zealand
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30
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Topham PD, Glidle A, Toolan DTW, Weir MP, Skoda MWA, Barker R, Howse JR. The relationship between charge density and polyelectrolyte brush profile using simultaneous neutron reflectivity and in situ attenuated total internal reflection FTIR. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:6068-6076. [PMID: 23607484 DOI: 10.1021/la4005592] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report on a novel experimental study of a pH-responsive polyelectrolyte brush at the silicon/D2O interface. A poly[2-(diethylamino)ethyl methacrylate] brush was grown on a large silicon crystal which acted as both a substrate for a neutron reflectivity solid/liquid experiment but also as an FTIR-ATR spectroscopy crystal. This arrangement has allowed for both neutron reflectivities and FTIR spectroscopic information to be measured in parallel. The chosen polybase brush shows strong IR bands which can be assigned to the N-D(+) stretch, D2O, and a carbonyl group. From such FTIR data, we are able to closely monitor the degree of protonation along the polymer chain as well as revealing information concerning the D2O concentration at the interface. The neutron reflectivity data allows us to determine the physical brush profile normal to the solid/liquid interface along with the corresponding degree of hydration. This combined approach makes it possible to quantify the charge on a polymer brush alongside the morphology adopted by the polymer chains.
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Affiliation(s)
- Paul D Topham
- Chemical Engineering and Applied Chemistry, Aston University, Birmingham, United Kingdom
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31
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Yameen B, Farrukh A. Polymer Brushes: Promises and Challenges. Chem Asian J 2013; 8:1736-53. [DOI: 10.1002/asia.201300149] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Indexed: 11/11/2022]
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32
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Lee T, Lin Lee H, Hsun Tsai M, Cheng SL, Lee SW, Hu JC, Chen LT. A biomimetic tongue by photoluminescent metal–organic frameworks. Biosens Bioelectron 2013; 43:56-62. [DOI: 10.1016/j.bios.2012.11.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 11/12/2012] [Accepted: 11/15/2012] [Indexed: 10/27/2022]
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