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Coudert N, Debrie C, Rieger J, Nicolai T, Colombani O. Thermosensitive Hydrogels of BAB Triblock Copolymers Exhibiting Gradually Slower Exchange Dynamics and an Unexpected Critical Reorganization Temperature Upon Heating. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Affiliation(s)
- Noémie Coudert
- Institut des Molécules et Matériaux du Mans (IMMM), UMR 6283 CNRS Le Mans Université, Avenue Olivier Messiaen, 72085Le Mans Cedex 9, France
| | - Clément Debrie
- Institut Parisien de Chimie Moléculaire (IPCM), Polymer Chemistry Team, Sorbonne Université, CNRS, UMR 8232, 4 Place Jussieu, 75252Paris Cedex 05, France
| | - Jutta Rieger
- Institut Parisien de Chimie Moléculaire (IPCM), Polymer Chemistry Team, Sorbonne Université, CNRS, UMR 8232, 4 Place Jussieu, 75252Paris Cedex 05, France
| | - Taco Nicolai
- Institut des Molécules et Matériaux du Mans (IMMM), UMR 6283 CNRS Le Mans Université, Avenue Olivier Messiaen, 72085Le Mans Cedex 9, France
| | - Olivier Colombani
- Institut des Molécules et Matériaux du Mans (IMMM), UMR 6283 CNRS Le Mans Université, Avenue Olivier Messiaen, 72085Le Mans Cedex 9, France
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2
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Leer K, Cinar G, Solomun JI, Martin L, Nischang I, Traeger A. Core-crosslinked, temperature- and pH-responsive micelles: design, physicochemical characterization, and gene delivery application. NANOSCALE 2021; 13:19412-19429. [PMID: 34591061 DOI: 10.1039/d1nr04223h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Stimuli-responsive block copolymer micelles can provide tailored properties for the efficient delivery of genetic material. In particular, temperature- and pH-responsive materials are of interest, since their physicochemical properties can be easily tailored to meet the requirements for successful gene delivery. Within this study, a stimuli-responsive micelle system for gene delivery was designed based on a diblock copolymer consisting of poly(N,N-diethylacrylamide) (PDEAm) as a temperature-responsive segment combined with poly(aminoethyl acrylamide) (PAEAm) as a pH-responsive, cationic segment. Upon temperature increase, the PDEAm block becomes hydrophobic due to its lower critical solution temperature (LCST), leading to micelle formation. Furthermore, the monomer 2-(pyridin-2-yldisulfanyl)ethyl acrylate (PDSAc) was incorporated into the temperature-responsive PDEAm building block enabling disulfide crosslinking of the formed micelle core to stabilize its structure regardless of temperature and dilution. The cloud points of the PDEAm block and the diblock copolymer were investigated by turbidimetry and fluorescence spectroscopy. The temperature-dependent formation of micelles was analyzed by dynamic light scattering (DLS) and elucidated in detail by an analytical ultracentrifuge (AUC), which provided detailed insights into the solution dynamics between polymers and assembled micelles as a function of temperature. Finally, the micelles were investigated for their applicability as gene delivery vectors by evaluation of cytotoxicity, pDNA binding, and transfection efficiency using HEK293T cells. The investigations showed that core-crosslinking resulted in a 13-fold increase in observed transfection efficiency. Our study presents a comprehensive investigation from polymer synthesis to an in-depth physicochemical characterization and biological application of a crosslinked micelle system including stimuli-responsive behavior.
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Affiliation(s)
- Katharina Leer
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Gizem Cinar
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Jana I Solomun
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Liam Martin
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Ivo Nischang
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Anja Traeger
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
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3
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Influence of TEMPO oxidation on the properties of ethylene glycol methyl ether acrylate grafted cellulose sponges. Carbohydr Polym 2021; 272:118458. [PMID: 34420718 DOI: 10.1016/j.carbpol.2021.118458] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/25/2021] [Accepted: 07/16/2021] [Indexed: 11/21/2022]
Abstract
In this study, cellulose nanofibers (CNF) obtained via high-pressure microfluidization were 2,6,6-tetra-methylpiperidine-1-oxyl (TEMPO) oxidized (TOCNF) in order to facilitate the grafting of ethylene glycol methyl ether acrylate (EGA). FTIR and XPS analyses revealed a more efficient grafting of EGA oligomers on the surface of TOCNF as compared to the original CNF. As a result, a consistent covering of the TOCNF fibers with EGA oligomers, an increased hydrophobicity and a reduction in porosity were noticed for TOCNF-EGA. However, the swelling ratio of TOCNF-EGA was similar to that of original CNF grafted with EGA and higher than that of TOCNF, because the higher amount of grafted EGA onto oxidized cellulose and the looser structure reduced the contacts between the fibrils and increased the absorption of water. All these results corroborated with a good cytocompatibility and compression strength recommend TOCNF-EGA for applications in regenerative medicine.
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4
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Van Guyse JFR, Bera D, Hoogenboom R. Adamantane Functionalized Poly(2-oxazoline)s with Broadly Tunable LCST-Behavior by Molecular Recognition. Polymers (Basel) 2021; 13:374. [PMID: 33530443 PMCID: PMC7865518 DOI: 10.3390/polym13030374] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/20/2021] [Accepted: 01/21/2021] [Indexed: 01/27/2023] Open
Abstract
Smart or adaptive materials often utilize stimuli-responsive polymers, which undergo a phase transition in response to a given stimulus. So far, various stimuli have been used to enable the modulation of drug release profiles, cell-interactive behavior, and optical and mechanical properties. In this respect, molecular recognition is a powerful tool to fine-tune the stimuli-responsive behavior due to its high specificity. Within this contribution, a poly(2-oxazoline) copolymer bearing adamantane side chains was synthesized via triazabicyclodecene-catalyzed amidation of the ester side chains of a poly(2-ethyl-2-oxazoline-stat-2-methoxycarbonylpropyl-2-oxazoline) statistical copolymer. Subsequent complexation of the pendant adamantane groups with sub-stoichiometric amounts (0-1 equivalents) of hydroxypropyl β-cyclodextrin or β-cyclodextrin enabled accurate tuning of its lower critical solution temperature (LCST) over an exceptionally wide temperature range, spanning from 30 °C to 56 °C. Furthermore, the sharp thermal transitions display minimal hysteresis, suggesting a reversible phase transition of the complexed polymer chains (i.e., the β-cyclodextrin host collapses together with the polymers) and a minimal influence by the temperature on the supramolecular association. Analysis of the association constant of the polymer with hydroxypropyl β-cyclodextrin via 1H NMR spectroscopy suggests that the selection of the macrocyclic host and rational polymer design can have a profound influence on the observed thermal transitions.
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Affiliation(s)
| | | | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, B-9000 Ghent, Belgium; (J.F.R.V.G.); (D.B.)
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5
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Ueda T, Murakami D, Tanaka M. Effect of interfacial structure based on grafting density of poly(2-methoxyethyl acrylate) on blood compatibility. Colloids Surf B Biointerfaces 2020; 199:111517. [PMID: 33352490 DOI: 10.1016/j.colsurfb.2020.111517] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/17/2020] [Accepted: 12/04/2020] [Indexed: 01/09/2023]
Abstract
An excellent blood-compatible polymer, poly(2-methoxyethyl acrylate) (PMEA), exhibits nanometer-scale phase-separated structures at the interface with water or phosphate-buffered saline (PBS), and fibrinogen adsorption is suppressed, especially on the water-rich region. To understand the correlation between the interfacial structure based on the grafting density of PMEA and blood compatibility, grafted PMEA (gPMEA) surfaces with controlled density were prepared by immobilizing thiol-terminated PMEA on a gold substrate. The amount of adsorbed fibrinogen and the number of adhered platelets on gPMEAs decreased first with the increasing grafting density (σ), but increased after showed minimum at σ of approximately 0.11 chains/nm2. The interfacial structures of the gPMEA/PBS interface changed with grafting density, and the maximum area of water-rich region was obtained at σ = 0.11. The water contact angle at σ = 0.11 is smaller than that at the other grafting density. These results revealed that hydration to the polymer is very effective to suppress the platelet adhesion and water-rich region shows excellent blood compatibility on gPMEA surfaces. This work clearly indicated that the density of PMEA affects the interfacial structure and plays an important role in the blood compatibility of the material.
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Affiliation(s)
- Tomoya Ueda
- Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Daiki Murakami
- Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan; Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Masaru Tanaka
- Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan; Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
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6
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Liu H, Ding A, Ma C, Huang X, Feng C, Wang Z, Wang Z, Lu G. The difluoromethylthio moiety lowers the LCST of oligo(ethylene glycol)-based homopolymers. Polym Chem 2020. [DOI: 10.1039/d0py00920b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Introduction of difluoromethylthio moiety could significantly lower LCSTs of oligo(ethylene glycol)-based thermo-responsive homopolymers.
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Affiliation(s)
- Haoyu Liu
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
| | - Aishun Ding
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
| | - Chen Ma
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
| | - Xiaoyu Huang
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
| | - Chun Feng
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
| | - Zhiqin Wang
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
| | - Zhaolei Wang
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
| | - Guolin Lu
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
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7
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Vancoillie G, Van Guyse JFR, Voorhaar L, Maji S, Frank D, Holder E, Hoogenboom R. Understanding the effect of monomer structure of oligoethylene glycol acrylate copolymers on their thermoresponsive behavior for the development of polymeric sensors. Polym Chem 2019. [DOI: 10.1039/c9py01326a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oligoethylene glycol acrylate (OEGA) polymers are a class of thermoresponsive polymers. Three new OEGA monomer combinations were investigated, which revealed three different types of thermoresponsive behavior as a function of copolymer composition.
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Affiliation(s)
- Gertjan Vancoillie
- Supramolecular Chemistry Group
- Department of Organic and Macromolecular Chemistry
- Ghent University
- B-9000 Ghent
- Belgium
| | - Joachim F. R. Van Guyse
- Supramolecular Chemistry Group
- Department of Organic and Macromolecular Chemistry
- Ghent University
- B-9000 Ghent
- Belgium
| | - Lenny Voorhaar
- Supramolecular Chemistry Group
- Department of Organic and Macromolecular Chemistry
- Ghent University
- B-9000 Ghent
- Belgium
| | - Samarendra Maji
- Supramolecular Chemistry Group
- Department of Organic and Macromolecular Chemistry
- Ghent University
- B-9000 Ghent
- Belgium
| | - Daniel Frank
- Supramolecular Chemistry Group
- Department of Organic and Macromolecular Chemistry
- Ghent University
- B-9000 Ghent
- Belgium
| | - Elizabeth Holder
- Functional Polymers Group and Institute of Polymer Technology
- University of Wuppertal
- D-42097 Wuppertal
- Germany
| | - Richard Hoogenboom
- Supramolecular Chemistry Group
- Department of Organic and Macromolecular Chemistry
- Ghent University
- B-9000 Ghent
- Belgium
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8
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Zhong Q, Mi L, Metwalli E, Bießmann L, Philipp M, Miasnikova A, Laschewsky A, Papadakis CM, Cubitt R, Schwartzkopf M, Roth SV, Wang J, Müller-Buschbaum P. Effect of chain architecture on the swelling and thermal response of star-shaped thermo-responsive (poly(methoxy diethylene glycol acrylate)-block-polystyrene) 3 block copolymer films. SOFT MATTER 2018; 14:6582-6594. [PMID: 30052259 DOI: 10.1039/c8sm00965a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The effect of chain architecture on the swelling and thermal response of thin films obtained from an amphiphilic three-arm star-shaped thermo-responsive block copolymer poly(methoxy diethylene glycol acrylate)-block-polystyrene ((PMDEGA-b-PS)3) is investigated by in situ neutron reflectivity (NR) measurements. The PMDEGA and PS blocks are micro-phase separated with randomly distributed PS nanodomains. The (PMDEGA-b-PS)3 films show a transition temperature (TT) at 33 °C in white light interferometry. The swelling capability of the (PMDEGA-b-PS)3 films in a D2O vapor atmosphere is better than that of films from linear PS-b-PMDEGA-b-PS triblock copolymers, which can be attributed to the hydrophilic end groups and limited size of the PS blocks in (PMDEGA-b-PS)3. However, the swelling kinetics of the as-prepared (PMDEGA-b-PS)3 films and the response of the swollen film to a temperature change above the TT are significantly slower than that in the PS-b-PMDEGA-b-PS films, which may be related to the conformation restriction by the star-shape. Unlike in the PS-b-PMDEGA-b-PS films, the amount of residual D2O in the collapsed (PMDEGA-b-PS)3 films depends on the final temperature. It decreases from (9.7 ± 0.3)% to (7.0 ± 0.3)% or (6.0 ± 0.3)% when the final temperatures are set to 35 °C, 45 °C and 50 °C, respectively. This temperature-dependent reduction of embedded D2O originates from the hindrance of chain conformation from the star-shaped chain architecture.
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Affiliation(s)
- Qi Zhong
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education, National Base for International Science and Technology Cooperation in Textiles and Consumer-Goods Chemistry, Zhejiang Sci-Tech University, 310018 Hangzhou, China. and Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien/Fachgebiet Physik Weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany.
| | - Lei Mi
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education, National Base for International Science and Technology Cooperation in Textiles and Consumer-Goods Chemistry, Zhejiang Sci-Tech University, 310018 Hangzhou, China.
| | - Ezzeldin Metwalli
- Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien/Fachgebiet Physik Weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany.
| | - Lorenz Bießmann
- Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien/Fachgebiet Physik Weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany.
| | - Martine Philipp
- Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien/Fachgebiet Physik Weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany.
| | - Anna Miasnikova
- Universität Potsdam, Institut für Chemie, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany
| | - Andre Laschewsky
- Universität Potsdam, Institut für Chemie, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany and Fraunhofer Institut für Angewandte Polymerforschung, Geiselbergstr. 69, 14476 Potsdam-Golm, Germany
| | - Christine M Papadakis
- Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien/Fachgebiet Physik Weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany.
| | - Robert Cubitt
- Institut Laue-Langevin, 6 rue Jules Horowitz, 38000 Grenoble, France
| | - Matthias Schwartzkopf
- Deutsches Elektronen-Synchrotron (DESY), Photon Science, Notkestr. 85, 22607 Hamburg, Germany
| | - Stephan V Roth
- Deutsches Elektronen-Synchrotron (DESY), Photon Science, Notkestr. 85, 22607 Hamburg, Germany and KTH Royal Institute of Technology, Department of Fibre and Polymer Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
| | - Jiping Wang
- Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education, National Base for International Science and Technology Cooperation in Textiles and Consumer-Goods Chemistry, Zhejiang Sci-Tech University, 310018 Hangzhou, China.
| | - Peter Müller-Buschbaum
- Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien/Fachgebiet Physik Weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany.
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9
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10
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Schier JES, Cohen-Sacal D, Hutchinson RA. Hydrogen bonding in radical solution copolymerization kinetics of acrylates and methacrylates: a comparison of hydroxy- and methoxy-functionality. Polym Chem 2017. [DOI: 10.1039/c7py00185a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Experimental data obtained via pulsed laser polymerization are used to distinguish the influence of H-bonding on kinetic chain-growth parameters from that of side-chain heteroatoms.
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Affiliation(s)
- Jan E. S. Schier
- Department of Chemical Engineering
- Queen's University
- K7L 3N6 Kingston
- Canada
| | - David Cohen-Sacal
- Department of Chemical Engineering
- Queen's University
- K7L 3N6 Kingston
- Canada
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11
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Kannan NB, Lessard BH. Copolymerization of 2,3,4,5,6-Pentafluorostyrene and Methacrylic Acid by Nitroxide-Mediated Polymerization: The Importance of Reactivity Ratios. MACROMOL REACT ENG 2016. [DOI: 10.1002/mren.201600052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nirmal B. Kannan
- Department of Chemical and Biological Engineering; University of Ottawa; 161 Louis Pasteur, Colonel By Building Ottawa Ontario K1N 6N5 Canada
| | - Benoît H. Lessard
- Department of Chemical and Biological Engineering; University of Ottawa; 161 Louis Pasteur, Colonel By Building Ottawa Ontario K1N 6N5 Canada
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12
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Schier JES, Hutchinson RA. The influence of hydrogen bonding on radical chain-growth parameters for butyl methacrylate/2-hydroxyethyl acrylate solution copolymerization. Polym Chem 2016. [DOI: 10.1039/c6py00834h] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pulsed laser polymerizations coupled with size exclusion chromatography (PLP-SEC) and NMR analyses were performed to determine radical kinetic parameters for BMA/HEA, with a focus on the effect of solvent choice and H-bonding on both copolymer composition and copolymer-averaged propagation rate coefficients.
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Affiliation(s)
- Jan E. S. Schier
- Department of Chemical Engineering
- Queen's University
- K7L 3N6 Kingston
- Canada
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13
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Hou L, Wu P. On the abnormal “forced hydration” behavior of P(MEA-co-OEGA) aqueous solutions during phase transition from infrared spectroscopic insights. Phys Chem Chem Phys 2016; 18:15593-601. [DOI: 10.1039/c6cp01244b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
During the phase separation of POEGA in water, C–H groups exhibit dehydration, whereas CO and C–O–C groups present “forced hydration”.
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Affiliation(s)
- Lei Hou
- The State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- and Laboratory of Advanced Materials
- Fudan University
| | - Peiyi Wu
- The State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials
- Department of Macromolecular Science
- and Laboratory of Advanced Materials
- Fudan University
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14
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Melle A, Balaceanu A, Kather M, Wu Y, Gau E, Sun W, Huang X, Shi X, Karperien M, Pich A. Stimuli-responsive poly(N-vinylcaprolactam-co-2-methoxyethyl acrylate) core–shell microgels: facile synthesis, modulation of surface properties and controlled internalisation into cells. J Mater Chem B 2016; 4:5127-5137. [DOI: 10.1039/c6tb01196a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Poly(N-vinylcaprolactam-co-2-methoxyethyl acrylate) core–shell microgels as imaging/diagnostic system.
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15
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Orekhov DV, Kamorin DM, Rumyantsev M, Kazantsev OA, Sivokhin AP, Gushchin AV, Savinova MV. Assembly of oligo(ethylene glycol)- and amine-containing methacrylic esters in water and water–hexane mixtures. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.04.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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16
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Zhang Q, Hou Z, Louage B, Zhou D, Vanparijs N, De Geest BG, Hoogenboom R. Acid-Labile Thermoresponsive Copolymers That Combine Fast pH-Triggered Hydrolysis and High Stability under Neutral Conditions. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505145] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Zhang Q, Hou Z, Louage B, Zhou D, Vanparijs N, De Geest BG, Hoogenboom R. Acid-Labile Thermoresponsive Copolymers That Combine Fast pH-Triggered Hydrolysis and High Stability under Neutral Conditions. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/anie.201505145] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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18
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19
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Panahian P, Salami-Kalajahi M, Hosseini MS. Synthesis of dual thermoresponsive and pH-sensitive hollow nanospheres by atom transfer radical polymerization. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0455-y] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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20
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Panahian P, Salami-Kalajahi M, Salami Hosseini M. Synthesis of Dual Thermosensitive and pH-Sensitive Hollow Nanospheres Based on Poly(acrylic acid-b-2-hydroxyethyl methacrylate) via an Atom Transfer Reversible Addition–Fragmentation Radical Process. Ind Eng Chem Res 2014. [DOI: 10.1021/ie500892b] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Pourya Panahian
- Department
of Polymer Engineering and Institute of Polymeric
Materials, Sahand University of Technology, P.O.
Box 51335-1996, Tabriz, Iran
| | - Mehdi Salami-Kalajahi
- Department
of Polymer Engineering and Institute of Polymeric
Materials, Sahand University of Technology, P.O.
Box 51335-1996, Tabriz, Iran
| | - Mahdi Salami Hosseini
- Department
of Polymer Engineering and Institute of Polymeric
Materials, Sahand University of Technology, P.O.
Box 51335-1996, Tabriz, Iran
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21
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Kong XZ, Zou D, Zhu X. Influence of main ingredients on properties of latex and latex film in polysiloxane modification of styrene-butyl acrylate copolymers. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0396-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Locock KES, Meagher L, Haeussler M. Oligomeric cationic polymethacrylates: a comparison of methods for determining molecular weight. Anal Chem 2014; 86:2131-7. [PMID: 24483846 DOI: 10.1021/ac403735n] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
This study compares three common laboratory methods, size-exclusion chromatography (SEC), (1)H nuclear magnetic resonance (NMR), and matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF), to determine the molecular weight of oligomeric cationic copolymers. The potential bias for each method was examined across a series of polymers that varied in molecular weight and cationic character (both choice of cation (amine versus guanidine) and relative proportion present). SEC was found to be the least accurate, overestimating Mn by an average of 140%, owing to the lack of appropriate cationic standards available, and the complexity involved in estimating the hydrodynamic volume of copolymers. MALDI-TOF approximated Mn well for the highly monodisperse (Đ < 1.1), low molecular weight (degree of polymerization (DP) <50) species but appeared unsuitable for the largest polymers in the series due to the mass bias associated with the technique. (1)H NMR was found to most accurately estimate Mn in this study, differing to theoretical values by only 5.2%. (1)H NMR end-group analysis is therefore an inexpensive and facile, primary quantitative method to estimate the molecular weight of oliogomeric cationic polymethacrylates if suitably distinct end-groups signals are present in the spectrum.
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Affiliation(s)
- Katherine E S Locock
- CSIRO Materials Science and Engineering, Bayview Avenue, Clayton, Victoria 3168, Australia
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23
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Woodfield PA, Zhu Y, Pei Y, Roth PJ. Hydrophobically Modified Sulfobetaine Copolymers with Tunable Aqueous UCST through Postpolymerization Modification of Poly(pentafluorophenyl acrylate). Macromolecules 2014. [DOI: 10.1021/ma402391a] [Citation(s) in RCA: 121] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Peter A. Woodfield
- Centre
for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW 2052, Australia
| | - Yicheng Zhu
- Centre
for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW 2052, Australia
| | - Yiwen Pei
- Centre
for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW 2052, Australia
- Polymer
Electronics Research Centre, School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Peter J. Roth
- Centre
for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW 2052, Australia
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24
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Liu P, Tang W, Zhang H. Unusual solution phase transition trend of poly(N-isopropylacrylamide-co-bis(N-hydroxyisopropyl pyrrolidone) 2-vinylterephthalate). POLYMER 2013. [DOI: 10.1016/j.polymer.2013.06.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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25
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Javakhishvili I, Jankova K, Hvilsted S. Neutral, anionic, cationic, and zwitterionic diblock copolymers featuring poly(2-methoxyethyl acrylate) “hydrophobic” segments. Polym Chem 2013. [DOI: 10.1039/c2py20694c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Liu P, Xiang L, Tan Q, Tang H, Zhang H. Steric hindrance effect on thermoresponsive behaviors of pyrrolidone-based polymers. Polym Chem 2013. [DOI: 10.1039/c2py20773g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Trinh LTT, Lambermont-Thijs HML, Schubert US, Hoogenboom R, Kjøniksen AL. Thermoresponsive Poly(2-oxazoline) Block Copolymers Exhibiting Two Cloud Points: Complex Multistep Assembly Behavior. Macromolecules 2012. [DOI: 10.1021/ma300570j] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Loan T. T. Trinh
- Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, 0315 Oslo,
Norway
| | - Hanneke M. L. Lambermont-Thijs
- Laboratory of Macromolecular
Chemistry and Nanoscience, Eindhoven University of Technology, Den Dolech 2, 5612AZ Eindhoven, The Netherlands
| | - Ulrich S. Schubert
- Laboratory of Macromolecular
Chemistry and Nanoscience, Eindhoven University of Technology, Den Dolech 2, 5612AZ Eindhoven, The Netherlands
- Laboratory of Organic and Macromolecular
Chemistry (IOMC) and Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Humboldtstr. 10,
07743 Jena, Germany
| | - Richard Hoogenboom
- Supramolecular
Chemistry Group,
Department of Organic Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium
| | - Anna-Lena Kjøniksen
- Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, 0315 Oslo,
Norway
- Department of Pharmacy, School
of Pharmacy, University of Oslo, P.O. Box
1068, Blindern, 0316 Oslo, Norway
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29
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Weber C, Hoogenboom R, Schubert US. Temperature responsive bio-compatible polymers based on poly(ethylene oxide) and poly(2-oxazoline)s. Prog Polym Sci 2012. [DOI: 10.1016/j.progpolymsci.2011.10.002] [Citation(s) in RCA: 430] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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30
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Zamfir M, Theato P, Lutz JF. Controlled folding of polystyrene single chains: design of asymmetric covalent bridges. Polym Chem 2012. [DOI: 10.1039/c1py00514f] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Delaittre G, Save M, Gaborieau M, Castignolles P, Rieger J, Charleux B. Synthesis by nitroxide-mediated aqueous dispersion polymerization, characterization, and physical core-crosslinking of pH- and thermoresponsive dynamic diblock copolymer micelles. Polym Chem 2012. [DOI: 10.1039/c2py20084h] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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