1
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Tang Z, Chulanova E, Küllmer M, Winter A, Picker J, Neumann C, Schreyer K, Herrmann-Westendorf F, Arnlind A, Dietzek B, Schubert US, Turchanin A. Photoactive ultrathin molecular nanosheets with reversible lanthanide binding terpyridine centers. NANOSCALE 2021; 13:20583-20591. [PMID: 34874038 DOI: 10.1039/d1nr05430a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In recent years, functional molecular nanosheets have attracted much attention in the fields of sensors and energy storage. Here, we present an approach for the synthesis of photoactive metal-organic nanosheets with ultimate molecular thickness. To this end, we apply low-energy electron irradiation induced cross-linking of 4'-(2,2':6',2''-terpyridine-4'-yl)-1,1'-biphenyl-4-thiol self-assembled monolayers on gold to convert them into functional ∼1 nm thick carbon nanomembranes possessing the ability to reversibly complex lanthanide ions (Ln-CNMs). The obtained Ln-CNMs can be prepared on a large-scale (>10 cm2) and inherit the photoactivity of the pristine terpyridine lanthanide complex (Ln(III)-tpy). Moreover, they possess mechanical stability as free-standing sheets over micrometer sized openings. The presented methodology paves a simple and robust way for the preparation of ultrathin nanosheets with tailored photoactive properties for application in photocatalytic and energy conversion devices.
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Affiliation(s)
- Zian Tang
- Institute of Physical Chemistry (IPC), Friedrich Schiller University Jena, Lessingstr. 10, 07743 Jena, Germany.
| | - Elena Chulanova
- Institute of Physical Chemistry (IPC), Friedrich Schiller University Jena, Lessingstr. 10, 07743 Jena, Germany.
- Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Maria Küllmer
- Institute of Physical Chemistry (IPC), Friedrich Schiller University Jena, Lessingstr. 10, 07743 Jena, Germany.
| | - Andreas Winter
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena), Philosophenweg 7a, 07743 Jena, Germany
| | - Julian Picker
- Institute of Physical Chemistry (IPC), Friedrich Schiller University Jena, Lessingstr. 10, 07743 Jena, Germany.
| | - Christof Neumann
- Institute of Physical Chemistry (IPC), Friedrich Schiller University Jena, Lessingstr. 10, 07743 Jena, Germany.
| | - Kristin Schreyer
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena), Philosophenweg 7a, 07743 Jena, Germany
| | - Felix Herrmann-Westendorf
- Institute of Physical Chemistry (IPC), Friedrich Schiller University Jena, Lessingstr. 10, 07743 Jena, Germany.
- Leibniz Institute of Photonic Technology, Research Department Functional Interfaces, Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Andreas Arnlind
- Institute of Physical Chemistry (IPC), Friedrich Schiller University Jena, Lessingstr. 10, 07743 Jena, Germany.
| | - Benjamin Dietzek
- Institute of Physical Chemistry (IPC), Friedrich Schiller University Jena, Lessingstr. 10, 07743 Jena, Germany.
- Center for Energy and Environmental Chemistry Jena (CEEC Jena), Philosophenweg 7a, 07743 Jena, Germany
- Leibniz Institute of Photonic Technology, Research Department Functional Interfaces, Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Ulrich S Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena), Philosophenweg 7a, 07743 Jena, Germany
| | - Andrey Turchanin
- Institute of Physical Chemistry (IPC), Friedrich Schiller University Jena, Lessingstr. 10, 07743 Jena, Germany.
- Center for Energy and Environmental Chemistry Jena (CEEC Jena), Philosophenweg 7a, 07743 Jena, Germany
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2
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Yang F, Qiu M, Miao Z, Zhang T, Zhang S, Wu Z. N, P-Codoped Carbon Film Derived from Phosphazenes and Its Printing Integration with a Polymer Carpet Via "Molecular Welding" for Flexible Electronics. ACS APPLIED MATERIALS & INTERFACES 2021; 13:29894-29905. [PMID: 34128633 DOI: 10.1021/acsami.1c04010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Although high-performance graphene-based micro/nano flexible electronic devices have shown promising applications in numerous fields, there are still many problems in converting graphene into practical applications. Heteroatom-doped graphene materials are of huge importance because heteroatom doping can significantly change the electronic structure and introduce the active site, which benefits the integration with a promising substrate and achieves nondestructive transfer of carbon materials. Herein, we analyze in detail the pyrolysis gas composition of heteroatom-enriched phosphazenes with different structures and prepare a series of high-quality in situ N, P-codoped carbon-based films from phosphazene solid sources on a low-cost glass substrate by a convenient one-step method. The N, P-codoped carbon film shows reflectivity, good conductivity, and transparency. In addition, with the help of in situ "molecular welding", we achieve nondestructive transfer of a conductive carbon-based film from a glass substrate to promising layer-polyimide (PI) and prepare a flexible free-standing carbon/PI hybrid film with an excellent binding interface. The flexible conductive hybrid film shows excellent durability under an extremely low temperature environment and superior bending stability after 800 bending cycles. The results suggest that a phosphazene precursor is an amazing choice for constructing high-quality heteroatom-doped conductive carbon films. Besides, this work provides a promising way for nondestructive transfer of the conductive carbon-based films and large-scale preparation of large-area patterned conductive thin films.
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Affiliation(s)
- Fan Yang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Munan Qiu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Zhenwei Miao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Teng Zhang
- School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Shuangkun Zhang
- College of Materials Science & Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Zhanpeng Wu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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3
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Li M, Pester CW. Mixed Polymer Brushes for "Smart" Surfaces. Polymers (Basel) 2020; 12:E1553. [PMID: 32668820 PMCID: PMC7408536 DOI: 10.3390/polym12071553] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/09/2020] [Accepted: 07/10/2020] [Indexed: 12/26/2022] Open
Abstract
Mixed polymer brushes (MPBs) are composed of two or more disparate polymers covalently tethered to a substrate. The resulting phase segregated morphologies have been extensively studied as responsive "smart" materials, as they can be reversible tuned and switched by external stimuli. Both computational and experimental work has attempted to establish an understanding of the resulting nanostructures that vary as a function of many factors. This contribution highlights state-of-the-art MPBs studies, covering synthetic approaches, phase behavior, responsiveness to external stimuli as well as novel applications of MPBs. Current limitations are recognized and possible directions for future studies are identified.
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Affiliation(s)
- Mingxiao Li
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA 16802, USA;
| | - Christian W. Pester
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA 16802, USA;
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA
- Department of Chemistry, The Pennsylvania State University, University Park, PA 16802, USA
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4
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Sheng W, Li W, Tan D, Zhang P, Zhang E, Sheremet E, Schmidt BV, Feng X, Rodriguez RD, Jordan R, Amin I. Polymer Brushes on Graphitic Carbon Nitride for Patterning and as a SERS Active Sensing Layer via Incorporated Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2020; 12:9797-9805. [PMID: 31999093 PMCID: PMC7050013 DOI: 10.1021/acsami.9b21984] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 01/30/2020] [Indexed: 05/27/2023]
Abstract
Graphitic carbon nitride (gCN) has a broad range of promising applications, from energy harvesting and storage to sensing. However, most of the applications are still restricted due to gCN poor dispersibility and limited functional groups. Herein, a direct photografting of gCN using various polymer brushes with tailorable functionalities via UV photopolymerization at ambient conditions is demonstrated. The systematic study of polymer brush-functionalized gCN reveals that the polymerization did not alter the inherent structure of gCN. Compared to the pristine gCN, the gCN-polymer composites show good dispersibility in various solvents such as water, ethanol, and tetrahydrofuran (THF). Patterned polymer brushes on gCN can be realized by employing photomask and microcontact printing technology. The polymer brushes with incorporated silver nanoparticles (AgNPs) on gCN can act as a multifunctional recyclable active sensing layer for surface-enhanced Raman spectroscopy (SERS) detection and photocatalysis. This multifunctionality is shown in consecutive cycles of SERS and photocatalytic degradation processes that can be applied to in situ monitor pollutants, such as dyes or pharmaceutical waste, with high chemical sensitivity as well as to water remediation. This dual functionality provides a significant advantage to our AgNPs/polymer-gCN with regard to state-of-the-art systems reported so far that only allow SERS pollutant detection but not their decomposition. These results may provide a new methodology for the covalent functionalization of gCN and may enable new applications in the field of catalysis, biosensors, and, most interestingly, environmental remediation.
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Affiliation(s)
- Wenbo Sheng
- Chair of Macromolecular
Chemistry, Faculty of Chemistry and Food Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069 Dresden, Germany
- Leibniz Institute of Polymer Research Dresden e.V., Hohe Str. 6, 01069 Dresden, Germany
| | - Wei Li
- Chair of Macromolecular
Chemistry, Faculty of Chemistry and Food Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069 Dresden, Germany
| | - Deming Tan
- Department of Inorganic
Chemistry, Technische Universität
Dresden, 01069 Dresden, Germany
| | - Panpan Zhang
- Chair of Molecular
Functional Materials, Faculty of Chemistry and Food Chemistry, School
of Science, Technische Universität
Dresden, Mommsenstr.
4, 01069 Dresden, Germany
| | - En Zhang
- Department of Inorganic
Chemistry, Technische Universität
Dresden, 01069 Dresden, Germany
| | - Evgeniya Sheremet
- Research School of Physics, Tomsk Polytechnic University, 30 Lenin Ave, 634050 Tomsk, Russia
| | | | - Xinliang Feng
- Chair of Molecular
Functional Materials, Faculty of Chemistry and Food Chemistry, School
of Science, Technische Universität
Dresden, Mommsenstr.
4, 01069 Dresden, Germany
| | - Raul D. Rodriguez
- Research School of Chemistry and Applied
Biomedical Sciences, Tomsk Polytechnic University, 30 Lenin Ave, 634050 Tomsk, Russia
| | - Rainer Jordan
- Chair of Macromolecular
Chemistry, Faculty of Chemistry and Food Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069 Dresden, Germany
| | - Ihsan Amin
- Chair of Macromolecular
Chemistry, Faculty of Chemistry and Food Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069 Dresden, Germany
- Van’t Hoff Institute of Molecular Science, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
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5
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Mocny P, Klok HA. Complex polymer topologies and polymer—nanoparticle hybrid films prepared via surface-initiated controlled radical polymerization. Prog Polym Sci 2020. [DOI: 10.1016/j.progpolymsci.2019.101185] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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6
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Haryadi BM, Hafner D, Amin I, Schubel R, Jordan R, Winter G, Engert J. Nonspherical Nanoparticle Shape Stability Is Affected by Complex Manufacturing Aspects: Its Implications for Drug Delivery and Targeting. Adv Healthc Mater 2019; 8:e1900352. [PMID: 31410996 DOI: 10.1002/adhm.201900352] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 07/05/2019] [Indexed: 02/04/2023]
Abstract
The shape of nanoparticles is known recently as an important design parameter influencing considerably the fate of nanoparticles with and in biological systems. Several manufacturing techniques to generate nonspherical nanoparticles as well as studies on in vitro and in vivo effects thereof have been described. However, nonspherical nanoparticle shape stability in physiological-related conditions and the impact of formulation parameters on nonspherical nanoparticle resistance still need to be investigated. To address these issues, different nanoparticle fabrication methods using biodegradable polymers are explored to produce nonspherical nanoparticles via the prevailing film-stretching method. In addition, systematic comparisons to other nanoparticle systems prepared by different manufacturing techniques and less biodegradable materials (but still commonly utilized for drug delivery and targeting) are conducted. The study evinces that the strong interplay from multiple nanoparticle properties (i.e., internal structure, Young's modulus, surface roughness, liquefaction temperature [glass transition (Tg ) or melting (Tm )], porosity, and surface hydrophobicity) is present. It is not possible to predict the nonsphericity longevity by merely one or two factor(s). The most influential features in preserving the nonsphericity of nanoparticles are existence of internal structure and low surface hydrophobicity (i.e., surface-free energy (SFE) > ≈55 mN m-1 , material-water interfacial tension <6 mN m-1 ), especially if the nanoparticles are soft (<1 GPa), rough (Rrms > 10 nm), porous (>1 m2 g-1 ), and in possession of low bulk liquefaction temperature (<100 °C). Interestingly, low surface hydrophobicity of nanoparticles can be obtained indirectly by the significant presence of residual stabilizers. Therefore, it is strongly suggested that nonsphericity of particle systems is highly dependent on surface chemistry but cannot be appraised separately from other factors. These results and reviews allot valuable guidelines for the design and manufacturing of nonspherical nanoparticles having adequate shape stability, thereby appropriate with their usage purposes. Furthermore, they can assist in understanding and explaining the possible mechanisms of nonspherical nanoparticles effectivity loss and distinctive material behavior at the nanoscale.
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Affiliation(s)
- Bernard Manuel Haryadi
- Pharmaceutical Technology and BiopharmaceuticsDepartment of PharmacyLudwig‐Maximilians‐Universität München Butenandtstraße 5 81377 Munich Germany
| | - Daniel Hafner
- Department of ChemistryDresden University of Technology Mommsenstraße 4 01069 Dresden Germany
| | - Ihsan Amin
- Department of ChemistryDresden University of Technology Mommsenstraße 4 01069 Dresden Germany
| | - Rene Schubel
- Department of ChemistryDresden University of Technology Mommsenstraße 4 01069 Dresden Germany
| | - Rainer Jordan
- Department of ChemistryDresden University of Technology Mommsenstraße 4 01069 Dresden Germany
| | - Gerhard Winter
- Pharmaceutical Technology and BiopharmaceuticsDepartment of PharmacyLudwig‐Maximilians‐Universität München Butenandtstraße 5 81377 Munich Germany
| | - Julia Engert
- Pharmaceutical Technology and BiopharmaceuticsDepartment of PharmacyLudwig‐Maximilians‐Universität München Butenandtstraße 5 81377 Munich Germany
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7
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Sheng W, Amin I, Neumann C, Dong R, Zhang T, Wegener E, Chen WL, Förster P, Tran HQ, Löffler M, Winter A, Rodriguez RD, Zschech E, Ober CK, Feng X, Turchanin A, Jordan R. Polymer Brushes on Hexagonal Boron Nitride. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1805228. [PMID: 30932320 DOI: 10.1002/smll.201805228] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 03/02/2019] [Indexed: 05/12/2023]
Abstract
Direct covalent functionalization of large-area single-layer hexagonal boron nitride (hBN) with various polymer brushes under mild conditions is presented. The photopolymerization of vinyl monomers results in the formation of thick and homogeneous (micropatterned, gradient) polymer brushes covalently bound to hBN. The brush layer mechanically and chemically stabilizes the material and allows facile handling as well as long-term use in water splitting hydrogen evolution reactions.
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Affiliation(s)
- Wenbo Sheng
- Chair of Macromolecular Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany
| | - Ihsan Amin
- Chair of Macromolecular Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany
- Junior Research Group Biosensing Surfaces, Leibniz Insitute for Plasma Science and Technology (INP), Felix-Hausdorff-Str. 2, 17489, Greifswald, Germany
- Department of Materials Science and Engineering, Cornell University, 310 Bard Hall, Ithaca, NY, 14853, USA
| | - Christof Neumann
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Center for Energy and Environmental Chemistry Jena (CEEC Jena), Lessingstr. 10, 07743, Jena, Germany
| | - Renhao Dong
- Chair of Molecular Functional Materials, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany
| | - Tao Zhang
- Chair of Macromolecular Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany
- Chair of Molecular Functional Materials, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany
| | - Erik Wegener
- Chair of Macromolecular Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany
| | - Wei-Liang Chen
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, 120 Olin Hall, Ithaca, NY, 14853, USA
| | - Paul Förster
- Chair of Macromolecular Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany
| | - Hai Quang Tran
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, 120 Olin Hall, Ithaca, NY, 14853, USA
| | - Markus Löffler
- Dresden Center for Nanoanalysis, Center for Advancing Electronics Dresden (CfAED), Technische Universität Dresden, Helmholtzstr. 18, 01187, Dresden, Germany
| | - Andreas Winter
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Center for Energy and Environmental Chemistry Jena (CEEC Jena), Lessingstr. 10, 07743, Jena, Germany
| | - Raul D Rodriguez
- Research School of Chemistry & Applied Biomedical Sciences, Tomsk Polytechnic University, 30 Lenin Ave, 634050, Tomsk, Russia
| | - Ehrenfried Zschech
- Dresden Center for Nanoanalysis, Center for Advancing Electronics Dresden (CfAED), Technische Universität Dresden, Helmholtzstr. 18, 01187, Dresden, Germany
- Department Head Microelectronic Materials and Nanoanalysis, Fraunhofer Institute for Ceramic Technologies and Systems, Maria Reiche Str. 2, 01099, Dresden, Germany
| | - Christopher K Ober
- Department of Materials Science and Engineering, Cornell University, 310 Bard Hall, Ithaca, NY, 14853, USA
| | - Xinliang Feng
- Chair of Molecular Functional Materials, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany
| | - Andrey Turchanin
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Center for Energy and Environmental Chemistry Jena (CEEC Jena), Lessingstr. 10, 07743, Jena, Germany
| | - Rainer Jordan
- Chair of Macromolecular Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany
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8
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Kang H, An S, Lee WJ, Kang GR, Kim S, Hur SM, Paeng K, Kim M. Stable polymer brushes with effectively varied grafting density synthesized from highly crosslinked random copolymer thin films. RSC Adv 2018; 8:24166-24174. [PMID: 35539156 PMCID: PMC9081858 DOI: 10.1039/c8ra04480e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 06/22/2018] [Indexed: 12/19/2022] Open
Abstract
Crosslinkable epoxy copolymers enable achieving highly stable P(S-b-MMA) brushes with controlled grafting density for close examination of phase separation behaviors.
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Affiliation(s)
- Hyungoo Kang
- Department of Chemistry and Chemical Engineering
- Inha University
- Incheon 22212
- Republic of Korea
| | - Sol An
- Department of Chemistry and Chemical Engineering
- Inha University
- Incheon 22212
- Republic of Korea
| | - Woo Jung Lee
- Department of Chemistry
- Sungkyunkwan University
- Suwon 16419
- Republic of Korea
| | - Ga Ryang Kang
- School of Polymer Science and Engineering
- Chonnam National University
- Gwangju 61186
- Republic of Korea
| | - Sangwon Kim
- Department of Polymer Science and Engineering
- Inha University
- Incheon 22212
- Republic of Korea
| | - Su-Mi Hur
- School of Polymer Science and Engineering
- Chonnam National University
- Gwangju 61186
- Republic of Korea
| | - Keewook Paeng
- Department of Chemistry
- Sungkyunkwan University
- Suwon 16419
- Republic of Korea
| | - Myungwoong Kim
- Department of Chemistry and Chemical Engineering
- Inha University
- Incheon 22212
- Republic of Korea
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9
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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: 587] [Impact Index Per Article: 83.9] [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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10
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Turchanin A, Gölzhäuser A. Carbon Nanomembranes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:6075-6103. [PMID: 27281234 DOI: 10.1002/adma.201506058] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Revised: 01/31/2016] [Indexed: 06/06/2023]
Abstract
Carbon nanomembranes (CNMs) are synthetic 2D carbon sheets with tailored physical or chemical properties. These depend on the structure, molecular composition, and surroundings on either side. Due to their molecular thickness, they can be regarded as "interfaces without bulk" separating regions of different gaseous, liquid, or solid components and controlling the materials exchange between them. Here, a universal scheme for the fabrication of 1 nm-thick, mechanically stable, functional CNMs is presented. CNMs can be further modified, for example perforated by ion bombardment or chemically functionalized by the binding of other molecules onto the surfaces. The underlying physical and chemical mechanisms are described, and examples are presented for the engineering of complex surface architectures, e.g., nanopatterns of proteins, fluorescent dyes, or polymer brushes. A simple transfer procedure allows CNMs to be placed on various support structures, which makes them available for diverse applications: supports for electron and X-ray microscopy, nanolithography, nanosieves, Janus nanomembranes, polymer carpets, complex layered structures, functionalization of graphene, novel nanoelectronic and nanomechanical devices. To close, the potential of CNMs in filtration and sensorics is discussed. Based on tests for the separation of gas molecules, it is argued that ballistic membranes may play a prominent role in future efforts of materials separation.
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Affiliation(s)
- Andrey Turchanin
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Lessingstraße 10, 07743, Jena, Germany
| | - Armin Gölzhäuser
- Faculty of Physics, Bielefeld University, Universitätsstr. 25, 33615, Bielefeld, Germany
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11
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Zhai Q, Jiang H, Zhang X, Li J, Wang E. Smart modification of the single conical nanochannel to fabricate dual-responsive ion gate by self-initiated photografting and photopolymerization. Talanta 2016; 149:280-284. [DOI: 10.1016/j.talanta.2015.11.063] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 11/19/2015] [Accepted: 11/23/2015] [Indexed: 11/28/2022]
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12
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Hafner D, Ziegler L, Ichwan M, Zhang T, Schneider M, Schiffmann M, Thomas C, Hinrichs K, Jordan R, Amin I. Mussel-Inspired Polymer Carpets: Direct Photografting of Polymer Brushes on Polydopamine Nanosheets for Controlled Cell Adhesion. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:1489-1494. [PMID: 26671880 DOI: 10.1002/adma.201504033] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 10/15/2015] [Indexed: 06/05/2023]
Abstract
2D mussel-inspired polydopamine (PDA) nanosheets are prepared and exploited as a functional surface for grafting various polymer brushes. The PDA nanosheet and its polymer-brush derivatives show lateral integrity and are robust; therefore, they can be detached from their substrates. Cell-adhesion tests show that the PDA nanosheet promotes cell growth and attachment, while a PDA-based poly(3-sulfopropyl methacrylate) carpet exhibits nonfouling behavior.
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Affiliation(s)
- Daniel Hafner
- Makromolekulare Chemie, Technische Universität Dresden, Mommsenstrasse 4, 01069, Dresden, Germany
| | - Lisa Ziegler
- Makromolekulare Chemie, Technische Universität Dresden, Mommsenstrasse 4, 01069, Dresden, Germany
| | - Muhammad Ichwan
- Center for Regenerative Therapy Dresden, Fetscherstrasse 105, 01307, Dresden, Germany
- Department of Pharmacology and Therapeutic, Faculty of Medicine, Universitas Sumatera Utara, Jalan Dr. T. Mansur 5, 20155, Medan, Indonesia
| | - Tao Zhang
- Makromolekulare Chemie, Technische Universität Dresden, Mommsenstrasse 4, 01069, Dresden, Germany
| | - Maximilian Schneider
- Makromolekulare Chemie, Technische Universität Dresden, Mommsenstrasse 4, 01069, Dresden, Germany
| | - Michael Schiffmann
- Makromolekulare Chemie, Technische Universität Dresden, Mommsenstrasse 4, 01069, Dresden, Germany
| | - Claudia Thomas
- Makromolekulare Chemie, Technische Universität Dresden, Mommsenstrasse 4, 01069, Dresden, Germany
| | - Karsten Hinrichs
- Leibniz-Institut für Analytische, Wissenschaften-ISAS-e.V., Department Berlin, Schwarzschildstrasse 8, 12489, Berlin, Germany
| | - Rainer Jordan
- Makromolekulare Chemie, Technische Universität Dresden, Mommsenstrasse 4, 01069, Dresden, Germany
- Center for Advancing Electronics Dresden, Technische Universität Dresden, George-Schumannstrasse 11, 01187, Dresden, Germany
| | - Ihsan Amin
- Makromolekulare Chemie, Technische Universität Dresden, Mommsenstrasse 4, 01069, Dresden, Germany
- Center for Advancing Electronics Dresden, Technische Universität Dresden, George-Schumannstrasse 11, 01187, Dresden, Germany
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13
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Bian H, Yang J, Zhang N, Wang Q, Liang Y, Dong D. Ultrathin free-standing polymer membranes with chemically responsive luminescence via consecutive photopolymerizations. Polym Chem 2016. [DOI: 10.1039/c5py02013a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A facile and general strategy for the preparation of chemically responsive ultrathin free-standing polymer membranes is demonstrated via UV-induced photopolymerizations.
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Affiliation(s)
- Hang Bian
- Key Laboratory of Synthetic Rubber
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Jiming Yang
- Key Laboratory of Synthetic Rubber
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Ning Zhang
- Key Laboratory of Synthetic Rubber
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Qiliao Wang
- Key Laboratory of Synthetic Rubber
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Yongjiu Liang
- Key Laboratory of Synthetic Rubber
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Dewen Dong
- Key Laboratory of Synthetic Rubber
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
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14
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de Leon A, Advincula RC. Free-Standing Macroinitiator Thin Film for Bifacial Polymer Chain Grafting. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Al de Leon
- Department of Macromolecular Science and Engineering; Case Western Reserve University; Cleveland OH 44106 USA
| | - Rigoberto C. Advincula
- Department of Macromolecular Science and Engineering; Case Western Reserve University; Cleveland OH 44106 USA
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15
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Kang C, Ramakrishna SN, Nelson A, Cremmel CVM, vom Stein H, Spencer ND, Isa L, Benetti EM. Ultrathin, freestanding, stimuli-responsive, porous membranes from polymer hydrogel-brushes. NANOSCALE 2015; 7:13017-25. [PMID: 26169114 DOI: 10.1039/c5nr03147h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The fabrication of freestanding, sub-100 nm-thick, pH-responsive hydrogel membranes with controlled nano-morphology, based on modified poly(hydroxyethyl methacrylate) (PHEMA) is presented. Polymer hydrogel-brush films were first synthesized by surface-initiated atom transfer radical polymerization (SI-ATRP) and subsequently detached from silicon substrates by UV-induced photo-cleavage of a specially designed linker within the initiator groups. The detachment was also assisted by pH-induced osmotic forces generated within the films in the swollen state. The mechanical properties and morphology of the freestanding films were studied by atomic force microscopy (AFM). Inclusion of nanopores of controlled diameter was accomplished by performing SI-ATRP from initiator-coated surfaces that had previously been patterned with polystyrene nanoparticles. Assembly parameters and particle sizes could be varied, in order to fabricate nanoporous hydrogel-brush membranes with tunable pore coverage and characteristics. Additionally, due to the presence of weak polyacid functions within the hydrogel, the membranes exhibited pH-dependent thickness in water and reversible opening/closing of the pores.
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Affiliation(s)
- Chengjun Kang
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, CH-8093 Zürich, Switzerland
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16
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From Self-Assembled Monolayers to Coatings: Advances in the Synthesis and Nanobio Applications of Polymer Brushes. Polymers (Basel) 2015. [DOI: 10.3390/polym7071346] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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17
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Becker D, Heidary N, Horch M, Gernert U, Zebger I, Schmidt J, Fischer A, Thomas A. Microporous polymer network films covalently bound to gold electrodes. Chem Commun (Camb) 2015; 51:4283-6. [PMID: 25672669 DOI: 10.1039/c4cc09637a] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Covalent attachment of a microporous polymer network (MPN) on a gold surface is presented. A functional bromophenyl-based self-assembled monolayer (SAM) formed on the gold surface acts as co-monomer in the polymerisation of the MPN yielding homogeneous and robust coatings. Covalent binding of the films to the electrode is confirmed by SEIRAS measurements.
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Affiliation(s)
- Daniel Becker
- Department of Chemistry, Functional Materials, Technische Universität Berlin, Hardenbergstr. 40, 10623 Berlin, Germany.
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18
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Meyerbroeker N, Waske P, Zharnikov M. Amino-terminated biphenylthiol self-assembled monolayers as highly reactive molecular templates. J Chem Phys 2015; 142:101919. [DOI: 10.1063/1.4907942] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Affiliation(s)
- N. Meyerbroeker
- Applied Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
| | - P. Waske
- Applied Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
| | - M. Zharnikov
- Applied Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
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19
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Casalini S, Berto M, Bortolotti CA, Foschi G, Operamolla A, Di Lauro M, Omar OH, Liscio A, Pasquali L, Montecchi M, Farinola GM, Borsari M. Electrowetting of nitro-functionalized oligoarylene thiols self-assembled on polycrystalline gold. ACS APPLIED MATERIALS & INTERFACES 2015; 7:3902-3909. [PMID: 25646868 DOI: 10.1021/am509104z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Four linear terarylene molecules (i) 4-nitro-terphenyl-4″-methanethiol (NTM), (ii) 4-nitro-terphenyl-3″,5″-dimethanethiol (NTD), (iii) ([1,1';4',1″] terphenyl-3,5-diyl)methanethiol (TM), and (iv) ([1,1';4',1″] terphenyl-3,5-diyl)dimethanethiol (TD) have been synthesized and their self-assembled monolayers (SAMs) have been obtained on polycrystalline gold. NTM and NTD SAMs have been characterized by X-ray photoelectron spectroscopy, Kelvin probe measurements, electrochemistry, and contact angle measurements. The terminal nitro group (-NO2) is irreversibly reduced to hydroxylamine (-NHOH), which can be reversibly turned into nitroso group (-NO). The direct comparison between NTM/NTD and TM/TD SAMs unambiguously shows the crucial influence of the nitro group on electrowetting properties of polycrystalline Au. The higher grade of surface tension related to NHOH has been successfully exploited for basic operations of digital μ-fluidics, such as droplets motion and merging.
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Affiliation(s)
- Stefano Casalini
- Università degli Studi di Modena e Reggio Emilia , Dipartimento di Scienze della Vita, via Campi 183, I-41125 Modena, Italy
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20
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Zhang T, Du Y, Müller F, Amin I, Jordan R. Surface-initiated Cu(0) mediated controlled radical polymerization (SI-CuCRP) using a copper plate. Polym Chem 2015. [DOI: 10.1039/c5py00093a] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on a new, extremely fast, very simple and versatile method to produce polymer brushes by surface-initiated controlled/living radical polymerization.
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Affiliation(s)
- Tao Zhang
- Professur für Makromolekulare Chemie
- Department Chemie
- Technische Universität Dresden
- 01069 Dresden
- Germany
| | - Yunhao Du
- Professur für Makromolekulare Chemie
- Department Chemie
- Technische Universität Dresden
- 01069 Dresden
- Germany
| | - Felix Müller
- Professur für Makromolekulare Chemie
- Department Chemie
- Technische Universität Dresden
- 01069 Dresden
- Germany
| | - Ihsan Amin
- Professur für Makromolekulare Chemie
- Department Chemie
- Technische Universität Dresden
- 01069 Dresden
- Germany
| | - Rainer Jordan
- Professur für Makromolekulare Chemie
- Department Chemie
- Technische Universität Dresden
- 01069 Dresden
- Germany
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21
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Ye Q, Xiao P, Liu W, Chen K, Chen T, Xue J, Du S, Huang Q. Exploring the potential of exfoliated ternary ultrathin Ti4AlN3 nanosheets for fabricating hybrid patterned polymer brushes. RSC Adv 2015. [DOI: 10.1039/c5ra09227b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new type of ternary Ti4AlN3 nanosheets was prepared for the first time. The obtained sheets with surface groups could be further used to fabricate micro-patterns and subsequently functionalized to achieve hybrid patterned polymer brushes.
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Affiliation(s)
- Qun Ye
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo
- People's Republic of China
| | - Peng Xiao
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo
- People's Republic of China
| | - Wulong Liu
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo
- People's Republic of China
| | - Ke Chen
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo
- People's Republic of China
| | - Tao Chen
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo
- People's Republic of China
| | - Jianming Xue
- State Key Laboratory of Nuclear Physics and Technology
- Peking University
- Beijing
- People's Republic of China
| | - Shiyu Du
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo
- People's Republic of China
| | - Qing Huang
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo
- People's Republic of China
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22
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Men Y, Wang W, Xiao P, Gu J, Sun A, Huang Y, Zhang J, Chen T. Controlled evaporative self-assembly of Fe3O4 nanoparticles assisted by an external magnetic field. RSC Adv 2015. [DOI: 10.1039/c5ra02160j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
A simple yet robust approach of magnetic field assisted controlled evaporative self-assembly (CESA) is developed to achieve Fe3O4 nanoparticles (NPs) micro- and nano-patterns in two dimensional (2D) direction.
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Affiliation(s)
- Yonghong Men
- Faculty of Materials Science and Chemical Engineering
- Ningbo University
- Ningbo 315211
- China
- Division of Polymer and Composite Materials
| | - Wenqin Wang
- Faculty of Materials Science and Chemical Engineering
- Ningbo University
- Ningbo 315211
- China
| | - Peng Xiao
- Division of Polymer and Composite Materials
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo 315201
- China
| | - Jincui Gu
- Division of Polymer and Composite Materials
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo 315201
- China
| | - Aihua Sun
- Division of Polymer and Composite Materials
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo 315201
- China
| | - Youju Huang
- Division of Polymer and Composite Materials
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo 315201
- China
| | - Jiawei Zhang
- Division of Polymer and Composite Materials
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo 315201
- China
| | - Tao Chen
- Division of Polymer and Composite Materials
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo 315201
- China
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23
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Zhang X, Neumann C, Angelova P, Beyer A, Gölzhäuser A. Tailoring the mechanics of ultrathin carbon nanomembranes by molecular design. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:8221-8227. [PMID: 24946144 DOI: 10.1021/la501961d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Freestanding carbon nanomembranes (CNMs) with a thickness between 0.6 and 1.7 nm were prepared from self-assembled monolayers (SAMs) of diverse polyaromatic precursors via low-energy electron-induced cross-linking. The mechanical properties of CNMs were investigated using AFM bulge test, where a pressure difference was applied to the membrane and the resulting deflection was measured by atomic force microscopy. We found a correlation between the rigidity of the precursor molecules and the macroscopic mechanical stiffness of CNMs. While CNMs from rigid and condensed precursors like naphthalene and pyrene thiols prove to exhibit higher Young's moduli of 15-19 GPa, CNMs from nonfused oligophenyls possess lower Young's moduli of ~10 GPa. For CNMs from less densely packed SAMs, the presence of defects and nanopores plays an important role in determining their mechanical properties. The finite element method (FEM) was applied to examine the deformation profiles and simulate the pressure-deflection relationships.
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Affiliation(s)
- Xianghui Zhang
- Physics of Supramolecular Systems and Surfaces, University of Bielefeld , Bielefeld 33615, Germany
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24
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Lv B, Zhou Y, Cha W, Wu Y, Hu J, Li L, Chi L, Ma H. Molecular composition, grafting density and film area affect the swelling-induced Au-S bond breakage. ACS APPLIED MATERIALS & INTERFACES 2014; 6:8313-8319. [PMID: 24803135 DOI: 10.1021/am501150m] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In previous studies, we reported the first observation of the Au-S bond breakage induced mechanically by the swelling of the surface-tethered weak polyelectrolyte brushes in phosphate buffered saline (PBS), a phenomenon with broad applications in the fields of biosensors and functional surfaces. In this study, three factors, namely the molecular composition, grafting density and film area of the weak polyelectrolyte, carboxylated poly(oligo(ethylene glycol) methacrylate-random-2-hydroxyethyl methacrylate) (poly(OEGMA-r-HEMA)), were studied systematically on how they affected the swelling-induced Au-S bond breakage (ABB). The results showed that, first, the swelling-induced ABB is applicable to a range of molecular compositions and grafting densities; but the critical thickness (Tcritical,dry) varied with both of the two factors. An analysis on the swelling ratio further revealed that the difference in the Tcritical,dry arose from the difference in the swelling ability. A film needed to swell to ∼250 nm to induce ABB regardless of its composition or structure, thus a higher swelling ratio would lead to a lower Tcritical,dry value. Then, the impact of the film area was studied in micrometer- and sub-micrometer-scale brush patterns, which showed that only partial, rather than complete ABB was induced in these microscopic films, resulting in buckling instead of film detaching. These results demonstrated that the ABB is suitable to be used in the design of biosensors, stimulus-responsive materials and mechanochemical devices. Although the >160 μm(2) required area for uniform ABB hinders the application of ABB in nanolithography, the irreversible buckling provides a facile method of generating rough surfaces.
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Affiliation(s)
- Bei'er Lv
- Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences , Suzhou 215123, People's Republic of China
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25
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Ai M, Shishatskiy S, Wind J, Zhang X, Nottbohm CT, Mellech N, Winter A, Vieker H, Qiu J, Dietz KJ, Gölzhäuser A, Beyer A. Carbon nanomembranes (CNMs) supported by polymer: mechanics and gas permeation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:3421-3426. [PMID: 24535992 DOI: 10.1002/adma.201304536] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 11/11/2013] [Indexed: 06/03/2023]
Abstract
Gas permeation characteristics of carbon nanomembranes (CNMs) from self-assembled monolayers are reported for the first time. The assembly of CNMs onto polydimethylsiloxane (PDMS) support membranes allows mechanical measurements under compression as well as determination of gas permeation characteristics. The results suggest that molecular-sized channels in CNMs dominate the permeation properties of the 1 nm thin CNMs.
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Affiliation(s)
- Min Ai
- Fakultät für Physik, Universität Bielefeld, 33615, Bielefeld, Germany
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26
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Men Y, Xiao P, Chen J, Fu J, Huang Y, Zhang J, Xie Z, Wang W, Chen T. Controlled evaporative self-assembly of poly(acrylic acid) in a confined geometry for fabricating patterned polymer brushes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:4863-4867. [PMID: 24702600 DOI: 10.1021/la500996a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A simple yet robust approach was exploited to fabricate large-scaled patterned polymer brushes by combining controlled evaporative self-assembly (CESA) in a confined geometry and self-initiated photografting and photopolymerization (SIPGP). Our method was carried out without any sophisticated instruments, free of lithography, overcoming current difficulties in fabricating polymer patterns by using complex instruments.
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Affiliation(s)
- Yonghong Men
- Division of Polymer and Composite Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Science , 519 Zhuangshi Road, Ningbo 315201, China
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27
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Xiao P, Gu J, Chen J, Zhang J, Xing R, Han Y, Fu J, Wang W, Chen T. Micro-contact printing of graphene oxide nanosheets for fabricating patterned polymer brushes. Chem Commun (Camb) 2014; 50:7103-6. [DOI: 10.1039/c4cc01467g] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Han D, Xiao P, Gu J, Chen J, Cai Z, Zhang J, Wang W, Chen T. Polymer brush functionalized Janus graphene oxide/chitosan hybrid membranes. RSC Adv 2014. [DOI: 10.1039/c4ra02826k] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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29
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Zhang D, Jin Y, Cheng J, Jiang Y, He L, Zhang L. Self-assembly of nanorod/nanoparticle mixtures in polymer brushes. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/polb.23415] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Dong Zhang
- Department of Physics; Zhejiang University; Hangzhou 310027 China
| | - Yankang Jin
- Department of Physics; Zhejiang University; Hangzhou 310027 China
| | - Jun Cheng
- Department of Physics; Zhejiang University; Hangzhou 310027 China
| | - Yangwei Jiang
- Department of Physics; Zhejiang University; Hangzhou 310027 China
| | - Linli He
- Department of Physics; Wenzhou University; Wenzhou 325035 China
| | - Linxi Zhang
- Department of Physics; Wenzhou University; Wenzhou 325035 China
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30
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Affiliation(s)
- M. Elizabeth Welch
- Department of Chemistry and Chemical Biology; Cornell University; Ithaca New York 14850
| | - Christopher K. Ober
- Department of Materials Science and Engineering; Cornell University; Ithaca New York 14850
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31
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Welch ME, Ober CK. Characterization of Polymer Brush Membranes via HF Etch Liftoff Technique. ACS Macro Lett 2013; 2:241-245. [PMID: 35581889 DOI: 10.1021/mz300656f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Surface modification using end-tethered polymer brushes is an attractive, versatile, and effective method of tailoring the surface properties of a material. However, because the chains are covalently attached, characterization of these films is limited. When polymer brushes are detached in their native state, as opposed to fabricating a cross-linked initiator support, additional analytical techniques can be employed. We report lifting off patterned polymer brush membranes from a silicon oxide surface via a hydrofluoric acid etch. This method allows examination of polymer brushes via TEM and thus provides information regarding the perfection of initiator self-assembled monolayer formation and brush growth, as well as the effect of different cross-linking procedures.
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Affiliation(s)
- M. Elizabeth Welch
- Departments of Chemistry and Chemical Biology and Material Science and Engineering, Cornell University, Ithaca, New York 14850, United
States
| | - Christopher K. Ober
- Departments of Chemistry and Chemical Biology and Material Science and Engineering, Cornell University, Ithaca, New York 14850, United
States
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32
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Covalent molecular assembly: Construction of ultrathin multilayer films by a two-dimensional fabrication method. J Colloid Interface Sci 2013; 392:158-166. [DOI: 10.1016/j.jcis.2012.07.061] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 07/20/2012] [Accepted: 07/23/2012] [Indexed: 11/23/2022]
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33
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Xiao P, Gu J, Chen J, Han D, Zhang J, Cao H, Xing R, Han Y, Wang W, Chen T. A microcontact printing induced supramolecular self-assembled photoactive surface for patterning polymer brushes. Chem Commun (Camb) 2013; 49:11167-9. [DOI: 10.1039/c3cc46037a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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34
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Yang J, Song LX, Du FY, Yang J, Shao ZC. Formation, structure and thermal properties of the ternary aggregate of polyethylene glycol, β-cyclodextrin and ferrocene. Supramol Chem 2012. [DOI: 10.1080/10610278.2012.716839] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jun Yang
- a CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering , University of Science and Technology of China , Hefei , 230026 , P.R. China
| | - Le Xin Song
- a CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering , University of Science and Technology of China , Hefei , 230026 , P.R. China
- b Department of Chemistry , University of Science and Technology of China , Hefei , 230026 , P.R. China
- c State Key Laboratory of Coordination Chemistry , Nanjing University , Nanjing , 210093 , P.R. China
| | - Fang Yun Du
- a CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering , University of Science and Technology of China , Hefei , 230026 , P.R. China
| | - Jing Yang
- b Department of Chemistry , University of Science and Technology of China , Hefei , 230026 , P.R. China
| | - Zhi Cheng Shao
- b Department of Chemistry , University of Science and Technology of China , Hefei , 230026 , P.R. China
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Meyerbröker N, Zharnikov M. Modification of nitrile-terminated biphenylthiol self-assembled monolayers by electron irradiation and related applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:9583-9592. [PMID: 22650608 DOI: 10.1021/la301399a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Here we describe the behavior of self-assembled monolayers (SAMs) of 4'-cyanobiphenyl-4-thiol (CBPT) on Au(111) upon electron irradiation. Under such a treatment, the aromatic framework of CBPT SAMs is laterally cross-linked while the nitrile groups, located at the SAM-ambience interface, are reduced to active amine moieties which can be used as docking sites for the coupling of other species. This makes CBPT monolayers as a promising system for conventional and chemical lithography as well as for nanofabrication. Along these lines, we demonstrate the preparation of complex polymer brushes, patterning of the underlying substrate, and fabrication of molecule-thin, free-standing membranes on the basis of CBPT SAMs. The balance between the application-favorable processes and defragmentation in these films is studied in detail, and comparison to the well-established (for the relevant applications) system of 4'-nitrobiphenyl-4-thiols is performed. Taking CBPT SAMs as a model system, the effect of the energy of the primary electrons on the extent of the chemical transformation and cross-linking in substituted aromatic SAMs is investigated.
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Affiliation(s)
- Nikolaus Meyerbröker
- Angewandte Physikalische Chemie, Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
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Ramanathan M, Kilbey, II SM, Ji Q, Hill JP, Ariga K. Materials self-assembly and fabrication in confined spaces. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm16629a] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Fik CP, Meuris M, Salz U, Bock T, Tiller JC. Ultrahigh-aspect ratio microfiber-furs as plant-surface mimics derived from teeth. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:3565-3569. [PMID: 21766346 DOI: 10.1002/adma.201101102] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Indexed: 05/31/2023]
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Steenackers M, Gigler AM, Zhang N, Deubel F, Seifert M, Hess LH, Lim CHYX, Loh KP, Garrido JA, Jordan R, Stutzmann M, Sharp ID. Polymer Brushes on Graphene. J Am Chem Soc 2011; 133:10490-8. [DOI: 10.1021/ja201052q] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Marin Steenackers
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748 Garching, Germany
- Wacker-Lehrstuhl für Makromolekulare Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Alexander M. Gigler
- CeNS and Department of Earth and Environmental Sciences, Ludwig-Maximilians-Universität München, Theresienstrasse 41, 80333 Munich, Germany
| | - Ning Zhang
- Wacker-Lehrstuhl für Makromolekulare Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Frank Deubel
- Wacker-Lehrstuhl für Makromolekulare Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Max Seifert
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748 Garching, Germany
| | - Lucas H. Hess
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748 Garching, Germany
| | - Candy Haley Yi Xuan Lim
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Kian Ping Loh
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Jose A. Garrido
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748 Garching, Germany
| | - Rainer Jordan
- Wacker-Lehrstuhl für Makromolekulare Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
- Professur für Makromolekulare Chemie, Department Chemie, Technische Universität Dresden, Zellescher Weg 19, 01069 Dresden, Germany
| | - Martin Stutzmann
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748 Garching, Germany
| | - Ian D. Sharp
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 4, 85748 Garching, Germany
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Estillore NC, Advincula RC. Free-Standing Films of Semifluorinated Block Copolymer Brushes from Layer-by-Layer Polyelectrolyte Macroinitiators. MACROMOL CHEM PHYS 2011. [DOI: 10.1002/macp.201100066] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Estillore NC, Advincula RC. Stimuli-responsive binary mixed polymer brushes and free-standing films by LbL-SIP. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:5997-6008. [PMID: 21513321 DOI: 10.1021/la200089x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report a facile approach to preparing binary mixed polymer brushes and free-standing films by combining the layer-by-layer and surface-initiated polymerization (LbL-SIP) techniques. Specifically, the grafting of mixed polymer brushes of poly(n-isopropylacrylamide) and polystyrene (pNIPAM-pSt) onto LbL-macroinitiator-modified planar substrates is described. Atom transfer radical polymerization (ATRP) and free radical polymerization (FRP) techniques were employed for the syntheses of pNIPAM and pSt, respectively, yielding pNIPAM-pSt mixed polymer brushes. The composition of the two polymers was controlled by varying the number of macroinitiator layers deposited on the substrate (i.e., LbL layers = 4, 8, 12, 16, and 20); consequently, mixed brushes of different thicknesses and composition ratios were obtained. Moreover, the switching behavior of the LbL-mixed brush films as a function of solvent and temperature was demonstrated and evaluated by water contact angle and atomic force microscopy (AFM) experiments. It was found that both the solvent and temperature stimuli responses were a function of the mixed brush composition and thickness ratio where the dominant component played a larger role in the response behavior. Furthermore, the ability to obtain free-standing films was exploited. The LbL technique provided the macroinitiator density variation necessary for the preparation of stable free-standing mixed brush films. Specifically, the free-standing films exhibited the rigidity to withstand changes in the solvent and temperature environment and at the same time were flexible enough to respond accordingly to external stimuli.
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Affiliation(s)
- Nicel C Estillore
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
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Amin I, Steenackers M, Zhang N, Schubel R, Beyer A, Gölzhäuser A, Jordan R. Patterned polymer carpets. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:683-7. [PMID: 21370466 DOI: 10.1002/smll.201001658] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2010] [Revised: 11/05/2010] [Indexed: 05/12/2023]
Abstract
For the development of polymer carpets as active devices for micro- and nanotechnology, a control of the polymer carpet morphology and especially control of the stimulus responsive polymer brush is needed. Here, we report on the first example for the fabrication of patterned polymer carpets. On a two-dimensional framework of fully crosslinked and chemically patterned nanosheets, polymer brushes of styrene and 4-vinyl pyridine were grafted by self-initiated surface photopolymerization and photografting (SIPGP). It was found that polymer grafting by SIPGP occurred over the entire nanosheets but with a preferred grafting on the amino functionalized nanosheet areas. This results in continuous polymer carpets with an intact nanosheet framework but with amplification of the chemical patterning into a three dimensional topography of the grafted polymer brush. In the case of negative patterned nanosheets, the patterned carpet could be prepared as freestanding ultrathin membranes. Furthermore, swelling experiments with poly(4-vinyl pyridine) carpets showed that the patterns induces a directional buckling of the flexible polymer carpet. This may open the possibility of the development of micro- or nanoactuator devices with anisotropic responds upon environmental changes.
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Affiliation(s)
- Ihsan Amin
- Department Chemie, Technische Universität Dresden, Zellescher Weg 19, 01069 Dresden, Germany; Physik Supramolekularer Systeme, Universität Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany
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