1
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Affiliation(s)
- M. Manav
- Graduate Aerospace Laboratories, California Institute of Technology, Pasadena, California 91125, United States
| | - M. Ponga
- Mechanical Engineering, University of British Columbia, Vancouver V6T 1Z4, Canada
| | - A. Srikantha Phani
- Mechanical Engineering, University of British Columbia, Vancouver V6T 1Z4, Canada
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2
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Temperature-responsive and multi-responsive grafted polymer brushes with transitions based on critical solution temperature: synthesis, properties, and applications. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04750-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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3
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Johnson EC, Willott JD, de Vos WM, Wanless EJ, Webber GB. Interplay of Composition, pH, and Temperature on the Conformation of Multi-stimulus-responsive Copolymer Brushes: Comparison of Experiment and Theory. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:5765-5777. [PMID: 32364745 DOI: 10.1021/acs.langmuir.0c00424] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Poly(2-(2-methoxyethoxy)ethyl methacrylate) (PMEO2MA), a thermoresponsive polymer with a lower critical solution temperature of ∼28 °C, and poly(2-(diethylamino)ethyl methacrylate) (PDEA), a weak polybase with an apparent pKa of ∼7.5, have been statistically copolymerized using activators continuously regenerated via electron transfer atom transfer radical polymerization to form multi-stimulus-responsive polymer brushes. The stimulus-responsive behavior of these brushes has been investigated with ellipsometry and numerical self-consistent field (nSCF) theory. The pH- and thermoresponsive behaviors of a PDEA homopolymer brush were investigated experimentally in order to benchmark the nSCF theory calculations. nSCF theory was able to reproduce the responsive behavior of PDEA and PMEO2MA homopolymer brushes. Three copolymer compositions (90:10, 70:30, and 50:50 mol % MEO2MA:DEA) were investigated experimentally with pH ramps performed at low and high temperatures and temperature ramps performed at low and high pH. A broader range of compositions were investigated with nSCF theory and compared to the experimental results, with the nSCF calculations able to capture the general behavior of the homopolymer and copolymer brushes. The responsive behavior of each brush to a given stimulus (temperature or pH) was dependent on both the polymer composition and environment (temperature or pH). The influence of pH on the brush increased with higher DEA mol % with a copolymer brush response transitioning from temperature-dominant to pH-dominant. The temperature response of PMEO2MA was completely masked at low and high pH values by the presence of at least 30 mol % polybase in the copolymer.
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Affiliation(s)
- Edwin C Johnson
- Priority Research Centre for Advanced Particle Processing and Transport, University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Joshua D Willott
- Membrane Surface Science (MSuS), Membrane Science and Technology Cluster, Mesa+ Institute for Nanotechnology, University of Twente, Enschede 7522 NB, The Netherlands
| | - Wiebe M de Vos
- Membrane Surface Science (MSuS), Membrane Science and Technology Cluster, Mesa+ Institute for Nanotechnology, University of Twente, Enschede 7522 NB, The Netherlands
| | - Erica J Wanless
- Priority Research Centre for Advanced Particle Processing and Transport, University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Grant B Webber
- Priority Research Centre for Advanced Particle Processing and Transport, University of Newcastle, Callaghan, New South Wales 2308, Australia
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4
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Giussi JM, Cortez ML, Marmisollé WA, Azzaroni O. Practical use of polymer brushes in sustainable energy applications: interfacial nanoarchitectonics for high-efficiency devices. Chem Soc Rev 2019; 48:814-849. [PMID: 30543263 DOI: 10.1039/c8cs00705e] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The discovery and development of novel approaches, materials and manufacturing processes in the field of energy are compelling increasing recognition as a major challenge for contemporary societies. The performance and lifetime of energy devices are critically dependent on nanoscale interfacial phenomena. From the viewpoint of materials design, the improvement of current technologies inevitably relies on gaining control over the complex interface between dissimilar materials. In this sense, interfacial nanoarchitectonics with polymer brushes has seen growing interest due to its potential to overcome many of the limitations of energy storage and conversion devices. Polymer brushes offer a broad variety of resources to manipulate interfacial properties and gain molecular control over the synergistic combination of materials. Many recent examples show that the rational integration of polymer brushes in hybrid nanoarchitectures greatly improves the performance of energy devices in terms of power density, lifetime and stability. Seen in this light, polymer brushes provide a new perspective from which to consider the development of hybrid materials and devices with improved functionalities. The aim of this review is therefore to focus on what polymer brush-based solutions can offer and to show how the practical use of surface-grafted polymer layers can improve the performance and efficiency of fuel cells, lithium-ion batteries, organic radical batteries, supercapacitors, photoelectrochemical cells and photovoltaic devices.
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Affiliation(s)
- Juan M Giussi
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET, Diagonal 113 y 64 (1900), La Plata, Argentina.
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5
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Murdoch TJ, Humphreys BA, Johnson EC, Webber GB, Wanless EJ. Specific ion effects on thermoresponsive polymer brushes: Comparison to other architectures. J Colloid Interface Sci 2018; 526:429-450. [DOI: 10.1016/j.jcis.2018.04.086] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/20/2018] [Accepted: 04/23/2018] [Indexed: 02/06/2023]
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6
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Stetsyshyn Y, Raczkowska J, Lishchynskyi O, Bernasik A, Kostruba A, Harhay K, Ohar H, Marzec MM, Budkowski A. Temperature-Controlled Three-Stage Switching of Wetting, Morphology, and Protein Adsorption. ACS APPLIED MATERIALS & INTERFACES 2017; 9:12035-12045. [PMID: 28291326 DOI: 10.1021/acsami.7b00136] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The novel polymeric coatings of oligoperoxide-graft-poly(4-vinylpyridine-co-oligo(ethylene glycol)ethyl ether methacrylate246) [oligoperoxide-graft-P(4VP-co-OEGMA246)] attached to glass were successfully fabricated. The composition, thickness, morphology, and wettability of resulting coatings were analyzed using X-ray photoelectron spectroscopy, ellipsometry, atomic force microscopy, and contact angle measurements, respectively. In addition, adsorption of the bovine serum albumin was examined with fluorescence microscopy. The thermal response of wettability and morphology of the coatings followed by that of protein adsorption revealed two distinct transitions at 10 and 23 °C. For the first time, three stage switching was observed not only for surface wetting but also for morphology and protein adsorption. Moreover, the influence of the pH on thermo-sensitivity of modified surfaces was shown.
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Affiliation(s)
- Yurij Stetsyshyn
- Lviv Polytechnic National University , S. Bandery 12, 79013 Lviv, Ukraine
| | - Joanna Raczkowska
- Smoluchowski Institute of Physics, Jagiellonian University , Łojasiewicza 11, 30-348 Kraków, Poland
| | - Ostap Lishchynskyi
- Lviv Polytechnic National University , S. Bandery 12, 79013 Lviv, Ukraine
| | - Andrzej Bernasik
- Faculty of Physics and Applied Computer Science, AGH University of Science and Technology , Al. Mickiewicza 30, 30-049 Kraków, Poland
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology , Al. Mickiewicza 30, 30-059 Kraków, Poland
| | | | - Khrystyna Harhay
- Lviv Polytechnic National University , S. Bandery 12, 79013 Lviv, Ukraine
| | - Halyna Ohar
- Lviv Polytechnic National University , S. Bandery 12, 79013 Lviv, Ukraine
| | - Mateusz M Marzec
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology , Al. Mickiewicza 30, 30-059 Kraków, Poland
| | - Andrzej Budkowski
- Smoluchowski Institute of Physics, Jagiellonian University , Łojasiewicza 11, 30-348 Kraków, Poland
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7
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Zhuang P, Dirani A, Glinel K, Jonas AM. Temperature Dependence of the Surface and Volume Hydrophilicity of Hydrophilic Polymer Brushes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3433-3444. [PMID: 27003634 DOI: 10.1021/acs.langmuir.6b00448] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The temperature-dependence of the volume and surface hydrophilicity of a series of water-swollen dense polymer brushes is measured by contact angle measurements in the captive bubble configuration, by ellipsometry, and by quartz crystal microbalance with dissipation monitoring (QCM-D). Thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) and poly(di(methoxyethoxy)ethyl methacrylate) (PMEO2MA), strongly hydrophilic poly(N,N-dimethylacrylamide) (PDMA) and poly(oligo(ethylene glycol) methacrylate) (POEGMA), and weakly hydrophilic poly(2-hydroxyethyl methacrylate) (PHEMA) brushes were synthesized by surface-initiated atom-transfer radical polymerization (SI-ATRP). Conditions leading to reproducible measurements of the contact angle are first provided, giving access to the surface hydrophilicity. Volume hydrophilicity is quantified by measuring the swelling of the brushes, either by QCM-D or by ellipsometry. A model-free methodology is proposed to analyze the QCM-D data. Comparison between the acoustic and optical swelling coefficients shows that QCM-D is sensitive to the maximal thickness of swollen brushes, while ellipsometry provides an integral thickness. Diagrams of surface versus volume hydrophilicity of the brushes finally lead to identify two types of behavior: strongly water-swollen brushes exhibit a progressive decrease of volume hydrophilicity with temperature, while surface hydrophilicity changes moderately; weakly water-swollen brushes have a close-to-constant volume hydrophilicity, while surface hydrophilicity decreases with temperature. Thermoresponsive brushes abruptly switch from one behavior to the other, and do not exhibit an abrupt change of surface hydrophilicity across their collapse transition contrarily to a common erroneous belief. In general, there is no direct correlation between surface and volume hydrophilicity, because surface properties are dependent on the details of conformation and composition at the surface, whereas volume properties are averaged over a finite region within the brush.
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Affiliation(s)
- Pengyu Zhuang
- Bio & Soft Matter, Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain , Croix du Sud 1/L7.04.02, 1348 Louvain-la-Neuve, Belgium
| | - Ali Dirani
- Bio & Soft Matter, Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain , Croix du Sud 1/L7.04.02, 1348 Louvain-la-Neuve, Belgium
| | - Karine Glinel
- Bio & Soft Matter, Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain , Croix du Sud 1/L7.04.02, 1348 Louvain-la-Neuve, Belgium
| | - Alain M Jonas
- Bio & Soft Matter, Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain , Croix du Sud 1/L7.04.02, 1348 Louvain-la-Neuve, Belgium
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8
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Weaver LG, Stockmann R, Postma A, Thang SH. Multi-responsive (diethylene glycol)methyl ether methacrylate (DEGMA)-based copolymer systems. RSC Adv 2016. [DOI: 10.1039/c6ra14425j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
RAFT polymerisation was used to synthesise stimuli-responsive DEGMA-based copolymer systems, and their solution properties and aggregation behaviour were then studied.
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Affiliation(s)
| | | | | | - San H. Thang
- CSIRO Manufacturing
- Clayton South
- Australia
- Monash University
- School of Chemistry
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9
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Tong Y, Han X, Huang C, Shao Z, Guo L, Wang Y, Ding J, Hou H. Reversible metal-induced emission and chromaticity switching in isostructural Ln-MOFs. Dalton Trans 2016; 45:3702-5. [DOI: 10.1039/c6dt00067c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Herein, reversible metal-induced optical switching is reported, especially the first chromaticity switching example in MOFs.
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Affiliation(s)
- Yue Tong
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Xiao Han
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Chao Huang
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Zhichao Shao
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Li'an Guo
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Yazhen Wang
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Jie Ding
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Hongwei Hou
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P. R. China
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10
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Xie K, Fu Q, He Y, Kim J, Goh SJ, Nam E, Qiao GG, Webley PA. Synthesis of well dispersed polymer grafted metal–organic framework nanoparticles. Chem Commun (Camb) 2015; 51:15566-9. [DOI: 10.1039/c5cc06694h] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We prepared novel polymer grafted MOF nanoparticles for the first time with excellent water dispersity and significantly enhanced catalytic effect.
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Affiliation(s)
- K. Xie
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
| | - Q. Fu
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
| | - Y. He
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
| | - J. Kim
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
| | - S. J. Goh
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
| | - E. Nam
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
| | - G. G. Qiao
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
| | - P. A. Webley
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
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11
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Erath J, Cui J, Schmid J, Kappl M, del Campo A, Fery A. Phototunable surface interactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:12138-12144. [PMID: 23883291 DOI: 10.1021/la4021349] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Photoresponsive polymer brushes constitute an attractive platform for tuning surface properties and functionality. Since the degree of photoconversion can be controlled by the light dose, functional states with intermediate properties between those of the nonexposed and fully exposed brushes are accessible. Here we investigate the light-modulated interfacial, adhesion, and frictional properties of photosensitive polymer brushes with a methacrylate backbone and ionizable -COOH side groups modified with the photoremovable group 6-nitroveratryloxycarbonyl (NVOC). The original brush (PNVOCMA) gradually changes into a charged poly(methacrylic acid) (PMAA) brush upon exposure to ultraviolet light due to the photoremoval of the chromophore and generation of free COOH groups. We show how the physical properties of the brush can be gradually tuned with the exposure dose using condensation microscopy, atomic force microscopy (AFM), force mapping, and friction force spectroscopy.
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Affiliation(s)
- Johann Erath
- Department of Physical Chemistry II, University Bayreuth , Universitätsstraße 30, 95440 Bayreuth, Germany
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12
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Stetsyshyn Y, Fornal K, Raczkowska J, Zemla J, Kostruba A, Ohar H, Ohar M, Donchak V, Harhay K, Awsiuk K, Rysz J, Bernasik A, Budkowski A. Temperature and pH dual-responsive POEGMA-based coatings for protein adsorption. J Colloid Interface Sci 2013; 411:247-56. [PMID: 24050642 DOI: 10.1016/j.jcis.2013.08.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Revised: 08/02/2013] [Accepted: 08/05/2013] [Indexed: 10/26/2022]
Abstract
Poly(oligo(ethylene glycol)ethyl ether methacrylate (POEGMA246) coatings were successfully fabricated using novel approach via polymerization from oligoperoxide grafted to premodified glass substrate. Wettability, content and composition of coatings fabricated with different polymerization times were determined using contact angle measurements, ellipsometry and Time of Flight-Secondary Ion Mass Spectrometry (TOF-SIMS). Thermo- and pH-responsive properties of POEGMA246 coatings were found to depend significantly on concentration of the grafted POEGMA246. Coatings fabricated with polymerization time 30 h exhibit not only temperature- but also pH-dependence of wettability. Thermal response of wettability, measured between 20 and 32°C, was prominent at pH 9 and 7 and diminished or was absent at pH 5 and 3, indicating a transition between hydrated loose coils and hydrophobic collapsed chains, blocked at low pH. Protein adsorption, observed by fluorescence microscopy and analyzed semi-quantitatively using integral geometry approach, decreased dramatically for model protein (lentil lectin labeled with fluorescein isothiocyanate) at transition from pH 5 to pH 9, showing only very weak thermal-dependence. Strong protein adsorption response to pH and very weak one to temperature was confirmed by TOF-SIMS and Principal Component Analysis.
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Affiliation(s)
- Yurij Stetsyshyn
- "Lvivska Polytechnika" National University, S. Bandery 12, 79013 Lviv, Ukraine.
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13
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Cui J, Iturri J, Götz U, Jimenez M, del Campo A. Analysis of responsive polymer films using surface acoustic waves. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:6582-7. [PMID: 23631510 DOI: 10.1021/la401014q] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The Surface Acoustic Wave (SAW) technique is applied for the first time to quantify the properties of a responsive polymer brush layer. Using a single SAW chip, the response of five different brush compositions to several pH changes was monitored in parallel in a single run. These results were compared with QCM-D studies on the same system. SAW exhibited two remarkable advantages against QCM-D: (i) multiplexing capability, which allowed considerable reduction in experimental time and expenses (1/8 reduction of experimental time, 1/5 in the number of chips, and 1/10 in solvent consumption in our case), and (ii) higher sensitivity in both mass and viscosity change than QCM-D (4-5 times higher in our systems). Our results demonstrate the suitability and advantages of the SAW technology for application in polymer science, in particular for the study of the compositional effects in responsive thin layers.
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Affiliation(s)
- Jiaxi Cui
- Max-Planck-Institut für Polymerforschung, Mainz, Germany
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14
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Zengin A, Tamer U, Caykara T. Synthesis of superparamagnetic and thermoresponsive hybrid nanoparticles via surface-mediated RAFT polymerization of di(ethylene glycol) ethyl ether acrylate and (oligoethylene glycol) methyl ether acrylate. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26739] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Adem Zengin
- Department of Chemistry, Gazi University, Faculty of Science; 06500 Besevler Ankara Turkey
| | - Ugur Tamer
- Department of Analytical Chemistry, Gazi University, Faculty of Pharmacy; 06330 Etiler Ankara Turkey
| | - Tuncer Caykara
- Department of Chemistry, Gazi University, Faculty of Science; 06500 Besevler Ankara Turkey
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15
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16
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Cheesman BT, Smith EG, Murdoch TJ, Guibert C, Webber GB, Edmondson S, Wanless EJ. Polyelectrolyte brush pH-response at the silica–aqueous solution interface: a kinetic and equilibrium investigation. Phys Chem Chem Phys 2013; 15:14502-10. [DOI: 10.1039/c3cp52281d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Cui J, Miguel VS, del Campo A. Light-Triggered Multifunctionality at Surfaces Mediated by Photolabile Protecting Groups. Macromol Rapid Commun 2012; 34:310-29. [DOI: 10.1002/marc.201200634] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 10/26/2012] [Indexed: 12/31/2022]
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18
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Dirani A, Laloyaux X, Fernandes AE, Mathy B, Schicke O, Riant O, Nysten B, Jonas AM. Reversible Photomodulation of the Swelling of Poly(oligo(ethylene glycol) methacrylate) Thermoresponsive Polymer Brushes. Macromolecules 2012. [DOI: 10.1021/ma302106c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Ali Dirani
- Bio & Soft Matter, Institute of Condensed Matter, Nanosciences, Université catholique de Louvain, Croix du Sud 1/L7.04.02, B1348 Louvain-la-Neuve, Belgium
| | - Xavier Laloyaux
- Bio & Soft Matter, Institute of Condensed Matter, Nanosciences, Université catholique de Louvain, Croix du Sud 1/L7.04.02, B1348 Louvain-la-Neuve, Belgium
| | - Antony E. Fernandes
- Bio & Soft Matter, Institute of Condensed Matter, Nanosciences, Université catholique de Louvain, Croix du Sud 1/L7.04.02, B1348 Louvain-la-Neuve, Belgium
| | - Bertrand Mathy
- Bio & Soft Matter, Institute of Condensed Matter, Nanosciences, Université catholique de Louvain, Croix du Sud 1/L7.04.02, B1348 Louvain-la-Neuve, Belgium
| | - Olivier Schicke
- Bio & Soft Matter, Institute of Condensed Matter, Nanosciences, Université catholique de Louvain, Croix du Sud 1/L7.04.02, B1348 Louvain-la-Neuve, Belgium
| | - Olivier Riant
- Bio & Soft Matter, Institute of Condensed Matter, Nanosciences, Université catholique de Louvain, Croix du Sud 1/L7.04.02, B1348 Louvain-la-Neuve, Belgium
| | - Bernard Nysten
- Bio & Soft Matter, Institute of Condensed Matter, Nanosciences, Université catholique de Louvain, Croix du Sud 1/L7.04.02, B1348 Louvain-la-Neuve, Belgium
| | - Alain M. Jonas
- Bio & Soft Matter, Institute of Condensed Matter, Nanosciences, Université catholique de Louvain, Croix du Sud 1/L7.04.02, B1348 Louvain-la-Neuve, Belgium
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19
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Fernandes AE, Dirani A, d'Haese C, Deumer G, Guo W, Hensenne P, Nahra F, Laloyaux X, Haufroid V, Nysten B, Riant O, Jonas AM. Thicker is Better? Synthesis and Evaluation of Well-Defined Polymer Brushes with Controllable Catalytic Loadings. Chemistry 2012; 18:16226-33. [DOI: 10.1002/chem.201202531] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Indexed: 11/06/2022]
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20
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Olivier A, Meyer F, Raquez JM, Damman P, Dubois P. Surface-initiated controlled polymerization as a convenient method for designing functional polymer brushes: From self-assembled monolayers to patterned surfaces. Prog Polym Sci 2012. [DOI: 10.1016/j.progpolymsci.2011.06.002] [Citation(s) in RCA: 208] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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21
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Gu L, Wang X, Chen X, Zhao X, Wang F. Thermal and pH responsive high molecular weight poly(urethane-amine) with high urethane content. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24981] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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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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23
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Hong M, Liu JY, Li BX, Li YS. Facile Functionalization of Polyethylene via Click Chemistry. Macromolecules 2011. [DOI: 10.1021/ma2010537] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Miao Hong
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- Changchun Branch, Graduate School of the Chinese Academy of Sciences, Changchun 130022, China
| | - Jing-Yu Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Bai-Xiang Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Yue-Sheng Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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Schüwer N, Klok HA. Tuning the pH sensitivity of poly(methacrylic acid) brushes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:4789-4796. [PMID: 21425827 DOI: 10.1021/la200347u] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The pH-induced swelling and collapse of surface-tethered, weak polyelectrolyte brushes is of interest for the development of actuators or to allow pH controlled transport or adsorption. This contribution discusses results of an extensive series of quartz crystal microbalance (QCM) experiments that aimed at (i) further understanding the influence of brush thickness and density on the pH responsiveness of poly(methacrylic acid) (PMAA) brushes and (ii) developing strategies that allow one to engineer the pH responsiveness and dynamic response range of PMAA based brushes. It was observed that, due to their high grafting density, the apparent pK(a) of surface-tethered PMAA differs from that of the corresponding free polymer in solution and also covers a broader pH range. The pK(a) of the PMAA brushes was found to depend on both brush thickness and density; thicker brushes showed a higher pK(a) value, and brushes of higher density started to swell at higher pH. The second part of the paper demonstrates the feasibility of the N-hydroxysuccinimide-mediated post-polymerization modification to engineer the pH responsiveness of the PMAA brushes. By using appropriate amine functionalized acids, it was possible to tune both the pH of maximum response as well as the dynamic response range of these PMAA based polyelectrolyte brushes.
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Affiliation(s)
- Nicolas Schüwer
- École Polytechnique Fédérale de Lausanne (EPFL), Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères, Bâtiment MXD, Station 12, CH-1015 Lausanne, Switzerland
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