1
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Shi X, Bian T, Liu L, Zhao H. Surface Coassembly of Binary Mixed Polymer Brushes and Linear Block Copolymer Chains. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14217-14226. [PMID: 36342322 DOI: 10.1021/acs.langmuir.2c02230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Binary mixed polymer brushes (BMPBs) are two different homopolymer chains that are covalently anchored to the solid surfaces at high grafting densities. One feature of the BMPBs is the unique ability to make surface phase separation under external stimuli. In this research, we demonstrate that different surface nanostructures can be fabricated by surface coassembly of BMPBs and free block copolymer (BCP) chains. Polystyrene/poly(2-(dimethylamino)ethyl methacrylate) (PS/PDMAEMA) BMPBs on silica particles (PS-PDMAEMA-SiO2) are synthesized by a two-step "grafting to" approach. PDMAEMA-b-PS block copolymer (BCP) chains and PS-PDMAEMA-SiO2 make surface self-assembly and a variety of surface nanostructures are formed in methanol. The grafting densities of PS and PDMAEMA brushes, solvent, and the BCP structures all exert significant influences on the surface morphology. With an increase in PDMAEMA grafting density, the surface structures change from perforated layers, to rods, and to spherical surface micelles (s-micelles). The PS grafting density also exerts an effect on the formation of the surface nanostructures. At low PS grafting density, sparsely distributed s-micelles are produced, and at high density, densely distributed s-micelles are observed. Based on transmission electron microscopy and scanning electron microscopy results, a surface phase diagram is constructed, which provides a guide to the surface morphology control.
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Affiliation(s)
- Xiaoyu Shi
- College of Chemistry and Key Laboratory of Functional Polymer Materials of the Ministry of Education, Nankai University, Tianjin 300071, China
| | - Tianshun Bian
- College of Chemistry and Key Laboratory of Functional Polymer Materials of the Ministry of Education, Nankai University, Tianjin 300071, China
| | - Li Liu
- College of Chemistry and Key Laboratory of Functional Polymer Materials of the Ministry of Education, Nankai University, Tianjin 300071, China
| | - Hanying Zhao
- College of Chemistry and Key Laboratory of Functional Polymer Materials of the Ministry of Education, Nankai University, Tianjin 300071, China
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2
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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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3
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Promsuwan K, Soleh A, Saisahas K, Saichanapan J, Kanatharana P, Thavarungkul P, Guo C, Li CM, Limbut W. Discrimination of dopamine by an electrode modified with negatively charged manganese dioxide nanoparticles decorated on a poly(3,4 ethylenedioxythiophene)/reduced graphene oxide composite. J Colloid Interface Sci 2021; 597:314-324. [PMID: 33872888 DOI: 10.1016/j.jcis.2021.03.162] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/26/2021] [Accepted: 03/27/2021] [Indexed: 11/25/2022]
Abstract
A unique nanocomposite was fabricated using negatively charged manganese dioxide nanoparticles, poly (3,4-ethylenedioxythiophene) and reduced graphene oxide (MnO2/PEDOT/rGO). The nanocomposite was deposited on a glassy carbon electrode (GCE) functionalized with amino groups. The modified GCE was used to electrochemically detect dopamine (DA). The surface morphology, charge effect and electrochemical behaviours of the modified GCE were characterized by scanning electron microscopy, energy dispersive X-ray analysis (EDX), cyclic voltammetry and electrochemical impedance spectroscopy, respectively. The MnO2/PEDOT/rGO/GCE exhibited excellent performance towards DA sensing with a linear range between 0.05 and 135 µM with a lowest detection limit of 30 nM (S/N = 3). Selectivity towards DA was high in the presence of high concentrations of the typical interferences ascorbic acid and uric acid. The stability and reproducibility of the electrode were good. The sensor accurately determined DA in human serum. The synergic effect of the multiple components of the fabricated nanocomposite were critical to the good DA sensing performance. rGO provided a conductive backbone, PEDOT directed the uniform growth of MnO2 and adsorbed DA via pi-pi and electrostatic interaction, while the negatively charged MnO2 provided adsorption and catalytic sites for protonated DA. This work produced a promising biosensor that sensitively and selectively detected DA.
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Affiliation(s)
- Kiattisak Promsuwan
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, HatYai, Songkhla 90112, Thailand; Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Asamee Soleh
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, HatYai, Songkhla 90112, Thailand; Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Kasrin Saisahas
- Forensic Science Programme, School of Health Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
| | - Jenjira Saichanapan
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Proespichaya Kanatharana
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, HatYai, Songkhla 90112, Thailand; Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Panote Thavarungkul
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, HatYai, Songkhla 90112, Thailand; Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Chunxian Guo
- Institute of Materials Science & Devices, Suzhou University of Science and Technology, Suzhou 215011, PR China.
| | - Chang Ming Li
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 637457, Singapore; Institute for Clean Energy & Advanced Materials, Faculty of Materials and Energy, Southwest University, Chongqing 400715, PR China; Institute of Materials Science & Devices, Suzhou University of Science and Technology, Suzhou 215011, PR China.
| | - Warakorn Limbut
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, HatYai, Songkhla 90112, Thailand; Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
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4
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Li D, Xu L, Wang J, Gautrot JE. Responsive Polymer Brush Design and Emerging Applications for Nanotheranostics. Adv Healthc Mater 2021; 10:e2000953. [PMID: 32893474 DOI: 10.1002/adhm.202000953] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/11/2020] [Indexed: 12/29/2022]
Abstract
Responsive polymer brushes are a category of polymer brushes that are capable of conformational and chemical changes in response to external stimuli. They offer unique opportunities for the control of bio-nano interactions due to the precise control of chemical and structural parameters such as the brush thickness, density, chemistry, and architecture. The design of responsive brushes at the surface of nanomaterials for theranostic applications has developed rapidly. These coatings can be generated from a very broad range of nanomaterials, without compromising their physical, photophysical, and imaging properties. Although the use of responsive brushes for nanotheranostic remains in its early stages, in this review, the aim is to present how the systems developed to date can be combined to control sensing, imaging, and controlled delivery of therapeutics. The recent developments for such design and associated methods for the synthesis of responsive brushes are discussed. The responsive behaviors of homo polymer brushes and brushes with more complex architectures are briefly reviewed, before the applications of responsive brushes as smart delivery systems are discussed. Finally, the recent work is summarized on the use of responsive polymer brushes as novel biosensors and diagnostic tools for the detection of analytes and biomarkers.
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Affiliation(s)
- Danyang Li
- School of Cancer and Pharmaceutical Sciences King's College London 150 Stamford Street London SE1 9NH UK
- Institute of Bioengineering Queen Mary University of London Mile End Road London E1 4NS UK
- School of Engineering and Materials Science Queen Mary University of London Mile End Road London E1 4NS UK
| | - Lizhou Xu
- Department of Materials Imperial College London London SW7 2AZ UK
| | - Jing Wang
- School of Life Sciences Northwestern Polytechnical University Xi'an 710072 China
| | - Julien E. Gautrot
- Institute of Bioengineering Queen Mary University of London Mile End Road London E1 4NS UK
- School of Engineering and Materials Science Queen Mary University of London Mile End Road London E1 4NS UK
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5
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Bollella P, Melman A, Katz E. Electrochemically Generated Interfacial pH Change: Application to Signal‐Triggered Molecule Release. ChemElectroChem 2020. [DOI: 10.1002/celc.202000615] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Paolo Bollella
- Department of Chemistry and Biomolecular ScienceClarkson University 8 Clarkson Ave. Potsdam NY 13699 USA
| | - Artem Melman
- Department of Chemistry and Biomolecular ScienceClarkson University 8 Clarkson Ave. Potsdam NY 13699 USA
| | - Evgeny Katz
- Department of Chemistry and Biomolecular ScienceClarkson University 8 Clarkson Ave. Potsdam NY 13699 USA
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6
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Marschelke C, Puretskiy N, Raguzin I, Melnyk I, Ionov L, Synytska A. Effect of Architecture of Thermoresponsive Copolymer Brushes on Switching of Their Adsorption Properties. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Claudia Marschelke
- Leibniz Institute of Polymer Research Dresden e.V. Hohe Str. 6 01069 Dresden Germany
- Institute of Physical Chemistry of Polymeric Materials Dresden University of Technology 01062 Dresden Germany
| | - Nikolay Puretskiy
- Leibniz Institute of Polymer Research Dresden e.V. Hohe Str. 6 01069 Dresden Germany
| | - Ivan Raguzin
- Leibniz Institute of Polymer Research Dresden e.V. Hohe Str. 6 01069 Dresden Germany
| | - Inga Melnyk
- Leibniz Institute of Polymer Research Dresden e.V. Hohe Str. 6 01069 Dresden Germany
| | - Leonid Ionov
- Faculty of Engineering ScienceUniversity of Bayreuth, Universitätsstr. 30 95440 Bayreuth Germany
- Bavarian Polymer Institute, Universitätsstr. 30 95440 Bayreuth Germany
| | - Alla Synytska
- Leibniz Institute of Polymer Research Dresden e.V. Hohe Str. 6 01069 Dresden Germany
- Institute of Physical Chemistry of Polymeric Materials Dresden University of Technology 01062 Dresden Germany
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7
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Kaniewska K, Hyk W, Stojek Z, Karbarz M. Diffusional and migrational transport of ionic species affected by electrostatic interactions with an oppositely charged hydrogel layer attached to an electrode surface. Electrochem commun 2018. [DOI: 10.1016/j.elecom.2018.02.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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8
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Abbaspoor S, Agbolaghi S, Mahmoudi M, Jahanbani Y, Abbasi F, Sarvari R. Effect of miscibility on migration of third component in star-like co-continuous and disperse-within-disperse mixed brushes. POLYM INT 2017. [DOI: 10.1002/pi.5495] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Saleheh Abbaspoor
- Institute of Polymeric Materials and Faculty of Polymer Engineering; Sahand University of Technology; Tabriz Iran
| | - Samira Agbolaghi
- Chemical Engineering Department, Faculty of Engineering; Azarbaijan Shahid Madani University; Tabriz Iran
| | - Mojgan Mahmoudi
- Institute of Polymeric Materials and Faculty of Polymer Engineering; Sahand University of Technology; Tabriz Iran
| | - Yalda Jahanbani
- Institute of Polymeric Materials and Faculty of Polymer Engineering; Sahand University of Technology; Tabriz Iran
| | - Farhang Abbasi
- Institute of Polymeric Materials and Faculty of Polymer Engineering; Sahand University of Technology; Tabriz Iran
| | - Raana Sarvari
- Department of Chemistry; Payame Noor University; Tehran Iran
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9
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Enzyme‐Based Logic Gates and Networks with Output Signals Analyzed by Various Methods. Chemphyschem 2017; 18:1688-1713. [DOI: 10.1002/cphc.201601402] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Indexed: 01/16/2023]
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10
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Bui-Thi-Tuyet V, Trippé-Allard G, Ghilane J, Randriamahazaka H. Surface and Electrochemical Properties of Polymer Brush-Based Redox Poly(Ionic Liquid). ACS APPLIED MATERIALS & INTERFACES 2016; 8:28316-28324. [PMID: 27136186 DOI: 10.1021/acsami.6b02107] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Redox-active poly(ionic liquid) poly(3-(2-methacryloyloxy ethyl)-1-(N-(ferrocenylmethyl) imidazolium bis(trifluoromethylsulfonyl)imide deposited onto electrode surfaces has been prepared using surface-initiated atom transfer radical polymerization SI-ATRP. The process starts by electrochemical immobilization of initiator layer, and then methacrylate monomer carrying ferrocene and imidazolium units is polymerized in ionic liquid media via SI-ATRP process. The surfaces analyses of the polymer exhibit a well-defined polymer brushlike structure and confirm the presence of ferrocene and ionic moieties within the film. Furthermore, the electrochemical investigations of poly(redox-active ionic liquid) in different media demonstrate that the electron transfer is not restricted by the rate of counterion migration into/out of the polymer. The attractive electrochemical performance of these materials is further demonstrated by performing electrochemical measurement, of poly(ferrocene ionic liquid), in solvent-free electrolyte. The facile synthesis of such highly ordered electroactive materials based ionic liquid could be useful for the fabrication of nanostructured electrode suitable for performing electrochemistry in solvent free electrolyte. We also demonstrate possible applications of the poly(FcIL) as electrochemically reversible surface wettability system and as electrochemical sensor for the catalytic activity toward the oxidation of tyrosine.
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Affiliation(s)
- Van Bui-Thi-Tuyet
- Nano-Electro-Chemistry Group, ITODYS, UMR 7086 CNRS, Université Paris Diderot, Sorbonne Paris Cité , 15 rue Jean-Antoine de Baïf, 75205 Paris, France
| | - Gaëlle Trippé-Allard
- Nano-Electro-Chemistry Group, ITODYS, UMR 7086 CNRS, Université Paris Diderot, Sorbonne Paris Cité , 15 rue Jean-Antoine de Baïf, 75205 Paris, France
| | - Jalal Ghilane
- Nano-Electro-Chemistry Group, ITODYS, UMR 7086 CNRS, Université Paris Diderot, Sorbonne Paris Cité , 15 rue Jean-Antoine de Baïf, 75205 Paris, France
| | - Hyacinthe Randriamahazaka
- Nano-Electro-Chemistry Group, ITODYS, UMR 7086 CNRS, Université Paris Diderot, Sorbonne Paris Cité , 15 rue Jean-Antoine de Baïf, 75205 Paris, France
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11
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Masi M, Gamella M, Guz N, Katz E. Electrochemically Triggered DNA Release from a Mixed-brush Polymer-modified Electrode. ELECTROANAL 2016. [DOI: 10.1002/elan.201600275] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Madeline Masi
- Department of Chemistry and Biomolecular Science; Clarkson University; Potsdam NY 13699-5810 USA
| | - Maria Gamella
- Department of Chemistry and Biomolecular Science; Clarkson University; Potsdam NY 13699-5810 USA
| | - Nataliia Guz
- Department of Chemistry and Biomolecular Science; Clarkson University; Potsdam NY 13699-5810 USA
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science; Clarkson University; Potsdam NY 13699-5810 USA
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12
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13
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Sempionatto JR, Gamella M, Guz N, Pingarrón JM, Pedrosa VA, Minko S, Katz E. Electrochemically Stimulated DNA Release from a Polymer-Brush Modified Electrode. ELECTROANAL 2015. [DOI: 10.1002/elan.201500252] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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14
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Tong Y, Wang Y, Gao B, Su L, Zhang X. pH-Switchable electroactive composite films of carboxylated multi-walled carbon nanotubes and Prussian blue. RSC Adv 2015. [DOI: 10.1039/c5ra21751b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Here the combination of carboxylated multi-walled carbon nanotubes (CMWCNTs) and Prussian blue (PB) for fabricating pH-responsive electroactive composite thin films is reported.
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Affiliation(s)
- Ying Tong
- Research Center for Bioengineering and Sensing Technology
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Yuanyuan Wang
- Research Center for Bioengineering and Sensing Technology
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Bowen Gao
- Research Center for Bioengineering and Sensing Technology
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Lei Su
- Research Center for Bioengineering and Sensing Technology
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
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15
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Combined QCM-D/GE as a tool to characterize stimuli-responsive swelling of and protein adsorption on polymer brushes grafted onto 3D-nanostructures. Anal Bioanal Chem 2014; 406:7233-42. [DOI: 10.1007/s00216-014-8154-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 09/02/2014] [Indexed: 10/24/2022]
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16
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Gamella M, Guz N, Mailloux S, Pingarrón JM, Katz E. Activation of a biocatalytic electrode by removing glucose oxidase from the surface--application to signal triggered drug release. ACS APPLIED MATERIALS & INTERFACES 2014; 6:13349-13354. [PMID: 25084606 DOI: 10.1021/am504561d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A biocatalytic electrode activated by pH signals was prepared with a multilayered nanostructured interface including PQQ-dependent glucose dehydrogenase (PQQ-GDH) directly associated with the conducting support and glucose oxidase (GOx) located on the external interface. GOx was immobilized through a pH-signal-cleavable linker composed of an iminobiotin/avidin complex. In the presence of GOx, glucose was intercepted at the external interface and biocatalytically oxidized without current generation, thus keeping the electrode in its nonactive state. When the pH value was lowered from pH 7.5 to 4.5 the iminobiotin/avidin complex was cleaved and GOx was removed from the interface allowing glucose penetration to the electrode surface where it was oxidized by PQQ-GDH yielding a bioelectrocatalytic current, thus switching the electrode to its active state. This process was used to trigger a drug-mimicking release process from another connected electrode. Furthermore, the pH-switchable electrode can be activated by biochemical signals logically processed by biocatalytic systems mimicking various Boolean gates. Therefore, the developed switchable electrode can interface biomolecular computing/sensing systems with drug-release processes.
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Affiliation(s)
- Maria Gamella
- Department of Chemistry and Biomolecular Science, Clarkson University , Potsdam, New York 13699-5810, United States
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17
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Crulhas BP, Sempionatto JR, Cabral MF, Minko S, Pedrosa VA. Stimuli-Responsive Biointerface Based on Polymer Brushes for Glucose Detection. ELECTROANAL 2014. [DOI: 10.1002/elan.201400030] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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18
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Pizio O, Sokołowski S. Restricted primitive model for electrolyte solutions in slit-like pores with grafted chains: Microscopic structure, thermodynamics of adsorption, and electric properties from a density functional approach. J Chem Phys 2013; 138:204715. [DOI: 10.1063/1.4807777] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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19
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Electrode interfaces switchable by physical and chemical signals for biosensing, biofuel, and biocomputing applications. Anal Bioanal Chem 2012; 405:3659-72. [DOI: 10.1007/s00216-012-6525-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 10/23/2012] [Accepted: 10/24/2012] [Indexed: 01/26/2023]
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20
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Watson SMD, Hedley JH, Galindo MA, Al-Said SAF, Wright NG, Connolly BA, Horrocks BR, Houlton A. Synthesis, Characterisation and Electrical Properties of Supramolecular DNA-Templated Polymer Nanowires of 2,5-(Bis-2-thienyl)-pyrrole. Chemistry 2012; 18:12008-19. [DOI: 10.1002/chem.201201495] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Indexed: 01/16/2023]
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21
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Brunsen A, Díaz C, Pietrasanta LI, Yameen B, Ceolín M, Soler-Illia GJAA, Azzaroni O. Proton and calcium-gated ionic mesochannels: phosphate-bearing polymer brushes hosted in mesoporous thin films as biomimetic interfacial architectures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:3583-3592. [PMID: 22309103 DOI: 10.1021/la204854r] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Rational construction of interfaces based on multicomponent responsive systems in which molecular transport is mediated by structures of nanoscale dimensions has become a very fertile research area in biomimetic supramolecular chemistry. Herein, we describe the creation of hybrid mesostructured interfaces with reversible gate-like transport properties that can be controlled by chemical inputs, such as protons or calcium ions. This was accomplished by taking advantage of the surface-initiated polymerization of 2-(methacryloyloxy)ethyl phosphate (MEP) monomer units into and onto mesoporous silica thin films. In this way, phosphate-bearing polymer brushes were used as "gatekeepers" located not only on the outer surface of mesoporous thin films but also in the inner environment of the porous scaffold. Pore-confined PMEP brushes respond to the external triggering chemical signals not only by altering their physicochemical properties but also by switching the transport properties of the mesoporous film. The ion-gate response/operation was based on the protonation and/or chelation of phosphate monomer units in which the polymer brush works as an off-on switch in response to the presence of protons or Ca(2+) ions. The hybrid meso-architectured interface and their functional features were studied by a combination of experimental techniques including ellipso-porosimetry, cyclic voltammetry, X-ray reflectivity, grazing incidence small-angle X-ray scattering, X-ray photoelectron spectroscopy, and in situ atomic force microscopy. In this context, we believe that the integration of stimuli-responsive polymer brushes into nanoscopic supramolecular architectures would provide new routes toward multifunctional biomimetic nanosystems displaying transport properties similar to those encountered in biological ligand-gated ion channels.
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Affiliation(s)
- Annette Brunsen
- Gerencia Química, Comisión Nacional de Energía Atómica, Argentina
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22
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Zhao X, Liu Y, Lu J, Zhou J, Li J. Temperature-responsive polymer/carbon nanotube hybrids: smart conductive nanocomposite films for modulating the bioelectrocatalysis of NADH. Chemistry 2012; 18:3687-94. [PMID: 22334474 DOI: 10.1002/chem.201103259] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2011] [Indexed: 11/08/2022]
Abstract
A temperature-sensitive polymer/carbon nanotube interface with switchable bioelectrocatalytic capability was fabricated by self-assembly of poly(N-isopropylacrylamide)-grafted multiwalled carbon nanotubes (MWNT-g-PNIPAm) onto the PNIPAm-modified substrate. Electron microscopy and electrochemical measurements revealed that these fairly thick (>6 μm) and highly porous nanocomposite films exhibited high conductivity and electrocatalytic activity. The morphological transitions in both the tethered PNIPAm chains on a substrate and those polymers wrapping around the MWNT surface resulted in the opening, closing, or tuning of its permeability, and simultaneously an electron-transfer process took place through the channels formed in the nanostructure in response to temperature change. By combining the good electron-transfer and electrochemical catalysis capabilities, the large surface area, and good biocompatibility of MWNTs with the responsive features of PNIPAm, reversible temperature-controlled bioelectrocatalysis of 1,4-dihydro-β-nicotinamide adenine dinucleotide with improved sensitivity has been demonstrated by cyclic voltammetry and electrochemical impedance spectroscopy measurements. The mechanism behind this approach was studied by Raman spectroscopy, in situ attenuated total reflection FTIR spectroscopy, and contact angle measurements. The results also suggested that the synergetic or cooperative interactions of PNIPAm with MWNTs gave rise not only to an increase in surface wettability, but also to the enhancement of the interfacial thermoresponsive behavior. This bioelectrocatalytic "smart" system has potential applications in the design of biosensors and biofuel cells with externally controlled activity. Furthermore, this concept might be proposed for biomimetics, interfacial engineering, bioelectronic devices, and so forth.
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Affiliation(s)
- Xin Zhao
- Department of Chemistry, Beijing Key Laboratory for Analytical Methods and Instrumentation, Tsinghua University, Beijing 100084, PR China
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23
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Ionov L, Minko S. Mixed polymer brushes with locking switching. ACS APPLIED MATERIALS & INTERFACES 2012; 4:483-9. [PMID: 22220904 DOI: 10.1021/am201736t] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Mixed polymer brushes, made of two different kinds of polymers randomly grafted to the same solid substrate, were introduced as switchable interfaces for a number of promising applications. The switching properties of the mixed polymer brushes are substantially dependent on grafting density, molecular weight, compatibility of two distinct grafted polymers, and their interaction with the solvent. This work reports the mixed polymer brushes with the property of locking switching. The wetting properties of such a mixed brush can be switched between the wetting properties of individual constituting polymers by appropriate selection of solvent. However, the mixed polymer brushes wetting behavior can be locked in the hydrophobic state. This kinetically frozen methastable state, however, can be unlocked via treatment by proper "unlocking" solvent. This locking and unlocking of the hydrophobic state of the mixed brush with specific solvents could find useful applications for the development of functional materials.
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Affiliation(s)
- Leonid Ionov
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, USA.
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24
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Bocharova V, Katz E. Switchable electrode interfaces controlled by physical, chemical and biological signals. CHEM REC 2011; 12:114-30. [DOI: 10.1002/tcr.201100025] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Indexed: 11/10/2022]
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25
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Cui J, Azzaroni O, del Campo A. Polymer Brushes with Phototriggered and Phototunable Swelling and pH Response. Macromol Rapid Commun 2011; 32:1699-703. [DOI: 10.1002/marc.201100435] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 07/19/2011] [Indexed: 11/11/2022]
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26
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Cheng L, Cao D. Designing a thermo-switchable channel for nanofluidic controllable transportation. ACS NANO 2011; 5:1102-1108. [PMID: 21214172 DOI: 10.1021/nn102754g] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Owing to the important roles of chemical gates in biological systems, the biomimetic design of artificial switchable nanodevices has been attracting tremendous interest. Here, we design a cylindrical thermo-sensitive channel, in which nanofliudic transport properties can be controlled by manipulating environmental temperature. The switchable channel is formed by a polystyrene-b-poly(acrylic acid)-b-polystyrene (PS-PAA-PS)-like triblock copolymer brush whose conformation and phase behavior are dependent on temperature. With the increase of temperature, the designed channel exhibits "close→open→close" behavior, which can serve as a kind of excellent switchable nanodevice for nanofluidic controllable transportation.
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Affiliation(s)
- Lisheng Cheng
- Division of Molecular and Materials Simulation, Key Lab for Nanomaterials, Ministry of Education, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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Tagliazucchi M, Williams FJ, Calvo EJ. Metal-ion responsive redox polyelectrolyte multilayers. Chem Commun (Camb) 2010; 46:9004-6. [DOI: 10.1039/c0cc02738c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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