1
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Piechocki K, Koynov K, Piechocka J, Chamerski K, Filipecki J, Maczugowska P, Kozanecki M. Small molecule diffusion in poly-(olygo ethylene glycol methacrylate) based hydrogels studied by fluorescence correlation spectroscopy. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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2
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Ko CH, Henschel C, Meledam GP, Schroer MA, Müller-Buschbaum P, Laschewsky A, Papadakis CM. Self-Assembled Micelles from Thermoresponsive Poly(methyl methacrylate)-b-poly(N-isopropylacrylamide) Diblock Copolymers in Aqueous Solution. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c02189] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Chia-Hsin Ko
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Cristiane Henschel
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam-Golm, Germany
| | - Geethu P. Meledam
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Martin A. Schroer
- European Molecular Biology Laboratory, Hamburg Outstation, c/o Deutsches Elektronen-Synchrotron, Notkestr. 85, 22607 Hamburg, Germany
| | - Peter Müller-Buschbaum
- Physik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
- Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany
| | - André Laschewsky
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam-Golm, Germany
- Fraunhofer-Institut für Angewandte Polymerforschung, Geiselbergstraße 69, 14476 Potsdam-Golm, Germany
| | - Christine M. Papadakis
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
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3
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Stöbener DD, Weinhart M. Thermoresponsive Poly(glycidyl ether) Brush Coatings on Various Tissue Culture Substrates-How Block Copolymer Design and Substrate Material Govern Self-Assembly and Phase Transition. Polymers (Basel) 2020; 12:E1899. [PMID: 32846926 PMCID: PMC7563243 DOI: 10.3390/polym12091899] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/19/2020] [Accepted: 08/22/2020] [Indexed: 01/06/2023] Open
Abstract
Thermoresponsive poly(glycidyl ether) brushes can be grafted to applied tissue culture substrates and used for the fabrication of primary human cell sheets. The self-assembly of such brushes is achieved via the directed physical adsorption and subsequent UV immobilization of block copolymers equipped with a short, photo-reactive benzophenone-based anchor block. Depending on the chemistry and hydrophobicity of the benzophenone anchor, we demonstrate that such block copolymers exhibit distinct thermoresponsive properties and aggregation behaviors in water. Independent on the block copolymer composition, we developed a versatile grafting-to process which allows the fabrication of poly(glycidyl ether) brushes on various tissue culture substrates from dilute aqueous-ethanolic solution. The viability of this process crucially depends on the chemistry and hydrophobicity of, both, benzophenone-based anchor block and substrate material. Utilizing these insights, we were able to manufacture thermoresponsive poly(glycidyl ether) brushes on moderately hydrophobic polystyrene and polycarbonate as well as on rather hydrophilic polyethylene terephthalate and tissue culture-treated polystyrene substrates. We further show that the temperature-dependent switchability of the brush coatings is not only dependent on the cloud point temperature of the block copolymers, but also markedly governed by the hydrophobicity of the surface-bound benzophenone anchor and the subjacent substrate material. Our findings demonstrate that the design of amphiphilic thermoresponsive block copolymers is crucial for their phase transition characteristics in solution and on surfaces.
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Affiliation(s)
- Daniel David Stöbener
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Callinstr. 3A, 30167 Hannover, Germany;
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Marie Weinhart
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Callinstr. 3A, 30167 Hannover, Germany;
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
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4
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Fedorczyk M, Krzywicka A, Cieciórski P, Romański J, Megiel E. A Novel Strategy for the Synthesis of Amphiphilic and Thermoresponsive Poly(N-isopropylacrylamide)- b-Polystyrene Block Copolymers via ATRP. Polymers (Basel) 2019; 11:E1484. [PMID: 31514392 PMCID: PMC6780390 DOI: 10.3390/polym11091484] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 09/01/2019] [Accepted: 09/09/2019] [Indexed: 11/16/2022] Open
Abstract
A new synthetic approach is presented for the preparation of Poly(N-isopropylacrylamide-block-styrene) PNIPAM-b-PS via an Atom Transfer Radical Polymerization (ATRP) technique. The proposed method is based on application of 2-chloro-N-(2-hydroxyethyl)propanamide (NCPAE) as a bifunctional initiator, which enables ATRP of two monomers, differing in activity and polarity, into two stages. The synthesized copolymer molecules contain two well-defined polymer chains connected by a linker, which is a derivative of the proposed initiator. Using NCPAE led to PNIPAMs with well-planned molecular weight, low polydispersities (PDI=1.1÷1.3) and hydroxyl functionality. Activation of such blocks for initiation of styrene polymerization was performed using α-bromoisobutyryl bromide. After such a modification, the synthesized homopolymers acted as macroinitiators in ARGET ATRP and a well-defined polystyrene block, as the next one in the polymer chain was successfully formed. Both of the synthesized macromolecules, PNIPAM and PNIPAM-b-PS, exhibit a thermoresponsive behavior with explicit lower critical solution temperatures (LCST) in their aqueous solutions. The synthesized homopolymers and subsequently derived block copolymers were characterized using Size-Exclusion Chromatography, Differential Scanning Calorimetry, Dynamic Light Scattering, and NMR spectroscopy.
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Affiliation(s)
- Magdalena Fedorczyk
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
| | - Anna Krzywicka
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
| | - Piotr Cieciórski
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
| | - Jan Romański
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
| | - Elżbieta Megiel
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
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5
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Amirova A, Rodchenko S, Milenin S, Tatarinova E, Kurlykin M, Tenkovtsev A, Filippov A. Influence of a hydrophobic core on thermoresponsive behavior of dendrimer-based star-shaped poly(2-isopropyl-2-oxazoline) in aqueous solutions. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1285-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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6
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Chernikova EV, Plutalova AV, Mineeva KO, Vishnevetskii DV, Lysenko EA, Serkhacheva NS, Prokopov NI. Ternary copolymers of acrylic acid, N-isopropylacrylamide, and butyl acrylate: Synthesis and aggregative behavior in dilute solutions. POLYMER SCIENCE SERIES B 2016. [DOI: 10.1134/s1560090416050031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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7
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Yao Y, Metwalli E, Su B, Körstgens V, Moseguí González D, Miasnikova A, Laschewsky A, Opel M, Santoro G, Roth SV, Müller-Buschbaum P. Arrangement of Maghemite Nanoparticles via Wet Chemical Self-Assembly in PS-b-PNIPAM Diblock Copolymer Films. ACS APPLIED MATERIALS & INTERFACES 2015; 7:13080-13091. [PMID: 26001128 DOI: 10.1021/acsami.5b03308] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The structure and magnetic behavior of hybrid films composed of maghemite (γ-Fe2O3) nanoparticles (NPs) and an asymmetric diblock copolymer (DBC) polystyrene61-block-polyN-isopropylacrylamide115 are investigated. The NPs are coated with PS chains, which allow for a selective incorporation inside the PS domains at different NP concentrations. Upon incorporation of low amounts of NPs into the DBC thin films, the initial parallel (to film surface) cylinder morphology changes to a well ordered, perpendicularly oriented one. The characteristic domain distance of the DBC is increased due to the swelling of the PS domains with NPs. At higher NP concentrations, the excess NPs which can no longer be embedded in the PS domains, are accumulated at the film surface, and NP aggregates form. Irrespective of NP concentration, a superparamagnetic behavior of the metal oxide-DBC hybrid films is found. Such superparamagnetic properties make the established hybrid films interesting for high density magnetic storage media and thermoresponsive magnetic sensors.
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Affiliation(s)
- Yuan Yao
- †Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching, Germany
| | - Ezzeldin Metwalli
- †Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching, Germany
| | - Bo Su
- †Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching, Germany
| | - Volker Körstgens
- †Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching, Germany
| | - Daniel Moseguí González
- †Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching, Germany
| | - Anna Miasnikova
- ‡Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany
| | - Andre Laschewsky
- ‡Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany
- §Fraunhofer Institut für Angewandte Polymerforschung IAP, Geiselbergstrasse 69, 14476 Potsdam-Golm, Germany
| | - Matthias Opel
- ∥Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften, Walther-Meissner-Strasse 8, 85748 Garching, Germany
| | - Gonzalo Santoro
- ⊥Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22603 Hamburg, Germany
- #Instituto de Ciencia de Materiales de Madrid, ICMM-CSIC, sor Juana Inés de la Cruz 3, Cantoblanco, 28049 Madrid, Spain
| | - Stephan V Roth
- ⊥Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22603 Hamburg, Germany
| | - Peter Müller-Buschbaum
- †Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching, Germany
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8
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Poly(N-isopropyl acrylamide)-block-poly(n-butyl acrylate) thermoresponsive amphiphilic copolymers: Synthesis, characterization and self-assembly behavior in aqueous solutions. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.10.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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9
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Kyriakos K, Philipp M, Adelsberger J, Jaksch S, Berezkin AV, Lugo DM, Richtering W, Grillo I, Miasnikova A, Laschewsky A, Müller-Buschbaum P, Papadakis CM. Cononsolvency of Water/Methanol Mixtures for PNIPAM and PS-b-PNIPAM: Pathway of Aggregate Formation Investigated Using Time-Resolved SANS. Macromolecules 2014. [DOI: 10.1021/ma501434e] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Konstantinos Kyriakos
- Physik-Department,
Fachgebiet Physik weicher Materie/Lehrstuhl für Funktionelle
Materialien, Technische Universität München, James-Franck-Str.
1, 85748 Garching, Germany
| | - Martine Philipp
- Physik-Department,
Fachgebiet Physik weicher Materie/Lehrstuhl für Funktionelle
Materialien, Technische Universität München, James-Franck-Str.
1, 85748 Garching, Germany
| | - Joseph Adelsberger
- Physik-Department,
Fachgebiet Physik weicher Materie/Lehrstuhl für Funktionelle
Materialien, Technische Universität München, James-Franck-Str.
1, 85748 Garching, Germany
| | - Sebastian Jaksch
- Physik-Department,
Fachgebiet Physik weicher Materie/Lehrstuhl für Funktionelle
Materialien, Technische Universität München, James-Franck-Str.
1, 85748 Garching, Germany
| | - Anatoly V. Berezkin
- Physik-Department,
Fachgebiet Physik weicher Materie/Lehrstuhl für Funktionelle
Materialien, Technische Universität München, James-Franck-Str.
1, 85748 Garching, Germany
| | - Dersy M. Lugo
- Lehrstuhl
für Physikalische Chemie II, Institut für Physikalische
Chemie, RWTH Aachen University, Landoltweg 2, D-52056 Aachen, Germany
| | - Walter Richtering
- Lehrstuhl
für Physikalische Chemie II, Institut für Physikalische
Chemie, RWTH Aachen University, Landoltweg 2, D-52056 Aachen, Germany
| | - Isabelle Grillo
- Large
Scale Structures Group, Institut Laue-Langevin, 6, rue Jules Horowitz, 38042 Grenoble, France
| | - Anna Miasnikova
- Institut
für Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany
| | - André Laschewsky
- Institut
für Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany
- Fraunhofer Institut
für Angewandte Polymerforschung, Geiselbergstr. 69, 14476 Potsdam-Golm, Germany
| | - Peter Müller-Buschbaum
- Physik-Department,
Fachgebiet Physik weicher Materie/Lehrstuhl für Funktionelle
Materialien, Technische Universität München, James-Franck-Str.
1, 85748 Garching, Germany
| | - Christine M. Papadakis
- Physik-Department,
Fachgebiet Physik weicher Materie/Lehrstuhl für Funktionelle
Materialien, Technische Universität München, James-Franck-Str.
1, 85748 Garching, Germany
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10
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Novel thermoresponsive block copolymers having different architectures—structural, rheological, thermal, and dielectric investigations. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3282-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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Filippov SK, Chytil P, Konarev PV, Dyakonova M, Papadakis C, Zhigunov A, Plestil J, Stepanek P, Etrych T, Ulbrich K, Svergun DI. Macromolecular HPMA-Based Nanoparticles with Cholesterol for Solid-Tumor Targeting: Detailed Study of the Inner Structure of a Highly Efficient Drug Delivery System. Biomacromolecules 2012; 13:2594-604. [DOI: 10.1021/bm3008555] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Sergey K. Filippov
- Institute of Macromolecular
Chemistry, Academy of Sciences of the Czech Republic, v. v. i., Heyrovský Sq. 2, 162 06 Prague
6, Czech Republic
| | - Petr Chytil
- Institute of Macromolecular
Chemistry, Academy of Sciences of the Czech Republic, v. v. i., Heyrovský Sq. 2, 162 06 Prague
6, Czech Republic
| | - Petr V. Konarev
- European Molecular
Biology Laboratory, EMBL c/o DESY, Notkestrasse 85, D-22603 Hamburg, Germany
| | - Margarita Dyakonova
- Physik-Department, Technische Universität München, Physik-Department,
Fachgebiet
Physik weicher Materie, James-Franck-Str. 1, 85747 Garching, Germany
| | - ChristineM. Papadakis
- Physik-Department, Technische Universität München, Physik-Department,
Fachgebiet
Physik weicher Materie, James-Franck-Str. 1, 85747 Garching, Germany
| | - Alexander Zhigunov
- Institute of Macromolecular
Chemistry, Academy of Sciences of the Czech Republic, v. v. i., Heyrovský Sq. 2, 162 06 Prague
6, Czech Republic
| | - Josef Plestil
- Institute of Macromolecular
Chemistry, Academy of Sciences of the Czech Republic, v. v. i., Heyrovský Sq. 2, 162 06 Prague
6, Czech Republic
| | - Petr Stepanek
- Institute of Macromolecular
Chemistry, Academy of Sciences of the Czech Republic, v. v. i., Heyrovský Sq. 2, 162 06 Prague
6, Czech Republic
| | - Tomas Etrych
- Institute of Macromolecular
Chemistry, Academy of Sciences of the Czech Republic, v. v. i., Heyrovský Sq. 2, 162 06 Prague
6, Czech Republic
| | - Karel Ulbrich
- Institute of Macromolecular
Chemistry, Academy of Sciences of the Czech Republic, v. v. i., Heyrovský Sq. 2, 162 06 Prague
6, Czech Republic
| | - Dmitri I. Svergun
- European Molecular
Biology Laboratory, EMBL c/o DESY, Notkestrasse 85, D-22603 Hamburg, Germany
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12
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Meier-Koll A, Pipich V, Busch P, Papadakis CM, Müller-Buschbaum P. Phase separation in semidilute aqueous poly(N-isopropylacrylamide) solutions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:8791-8798. [PMID: 22607150 DOI: 10.1021/la3015332] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The phase separation mechanism in semidilute aqueous poly(N-isopropylacrylamide) (PNIPAM) solutions is investigated with small-angle neutron scattering (SANS). The nature of the phase transition is probed in static SANS measurements and with time-dependent SANS measurements after a temperature jump. The observed critical exponents of the phase transition describing the temperature dependence of the Ornstein-Zernike amplitude and correlation length are smaller than values from mean-field theory. Time-dependent SANS measurements show that the specific surface decreases with increasing time after a temperature jump above the phase transition. Thus, the formation of additional hydrogen bonds in the collapsed state is a kinetic effect: A certain fraction of water remains as bound water in the system. Moreover, H-D exchange reactions observed in PNIPAM have to be taken into account.
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Affiliation(s)
- Andreas Meier-Koll
- Physik-Department, Lehrstuhl für Funktionelle Materialien/Physik Weicher Materie, Technische Universität München, James-Franck-Str.1, 85748 Garching, Germany
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13
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Zhang W, Wang S, Li X, Yuan J, Wang S. Organic/inorganic hybrid star-shaped block copolymers of poly(l-lactide) and poly(N-isopropylacrylamide) with a polyhedral oligomeric silsesquioxane core: Synthesis and self-assembly. Eur Polym J 2012. [DOI: 10.1016/j.eurpolymj.2012.01.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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14
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Adelsberger J, Metwalli E, Diethert A, Grillo I, Bivigou-Koumba AM, Laschewsky A, Müller-Buschbaum P, Papadakis CM. Kinetics of Collapse Transition and Cluster Formation in a Thermoresponsive Micellar Solution of P(S-b-NIPAM-b-S) Induced by a Temperature Jump. Macromol Rapid Commun 2012; 33:254-9. [DOI: 10.1002/marc.201100631] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Revised: 11/14/2011] [Indexed: 11/11/2022]
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15
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Piogé S, Fustin CA, Gohy JF. Temperature-Responsive Aqueous Micelles From Terpyridine End-Capped Poly(N-Isopropylacrylamide)-Block-Polystyrene Diblock Copolymers. Macromol Rapid Commun 2011; 33:534-9. [DOI: 10.1002/marc.201100640] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Revised: 10/17/2011] [Indexed: 11/06/2022]
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16
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Zhong Q, Wang W, Adelsberger J, Golosova A, Bivigou Koumba AM, Laschewsky A, Funari SS, Perlich J, Roth SV, Papadakis CM, Müller-Buschbaum P. Collapse transition in thin films of poly(methoxydiethylenglycol acrylate). Colloid Polym Sci 2011. [DOI: 10.1007/s00396-011-2384-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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The collapse transition and the segmental dynamics in concentrated micellar solutions of P(S-b-NIPAM) diblock copolymers. Colloid Polym Sci 2011. [DOI: 10.1007/s00396-011-2382-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Du B, Mei A, Yang Y, Zhang Q, Wang Q, Xu J, Fan Z. Synthesis and micelle behavior of (PNIPAm-PtBA-PNIPAm)m amphiphilic multiblock copolymer. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.06.007] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Päch M, Zehm D, Lange M, Dambowsky I, Weiss J, Laschewsky A. Universal Polymer Analysis by 1H NMR Using Complementary Trimethylsilyl End Groups. J Am Chem Soc 2010; 132:8757-65. [DOI: 10.1021/ja102096u] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael Päch
- Fraunhofer Institute of Applied Polymer Research, Geiselbergstrasse 69, D-14476 Potsdam-Golm, Germany, and University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Strasse 25, D-14476 Potsdam-Golm, Germany
| | - Daniel Zehm
- Fraunhofer Institute of Applied Polymer Research, Geiselbergstrasse 69, D-14476 Potsdam-Golm, Germany, and University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Strasse 25, D-14476 Potsdam-Golm, Germany
| | - Maik Lange
- Fraunhofer Institute of Applied Polymer Research, Geiselbergstrasse 69, D-14476 Potsdam-Golm, Germany, and University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Strasse 25, D-14476 Potsdam-Golm, Germany
| | - Ina Dambowsky
- Fraunhofer Institute of Applied Polymer Research, Geiselbergstrasse 69, D-14476 Potsdam-Golm, Germany, and University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Strasse 25, D-14476 Potsdam-Golm, Germany
| | - Jan Weiss
- Fraunhofer Institute of Applied Polymer Research, Geiselbergstrasse 69, D-14476 Potsdam-Golm, Germany, and University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Strasse 25, D-14476 Potsdam-Golm, Germany
| | - André Laschewsky
- Fraunhofer Institute of Applied Polymer Research, Geiselbergstrasse 69, D-14476 Potsdam-Golm, Germany, and University of Potsdam, Institute of Chemistry, Karl-Liebknecht-Strasse 25, D-14476 Potsdam-Golm, Germany
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20
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Jain A, Kulkarni A, Koumba AMB, Wang W, Busch P, Laschewsky A, Müller-Buschbaum P, Papadakis CM. Micellar Solutions of a Symmetrical Amphiphilic ABA Triblock Copolymer with a Temperature-Responsive Shell. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/masy.201050526] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Zehm D, Laschewsky A, Gradzielski M, Prévost S, Liang H, Rabe JP, Schweins R, Gummel J. Amphiphilic dual brush block copolymers as "giant surfactants" and their aqueous self-assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:3145-3155. [PMID: 19877616 DOI: 10.1021/la903087p] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Amphiphilic dual brush diblock as well as symmetrical triblock polymers were synthesized by the overlay of the reversible addition-fragmentation chain transfer (RAFT) and the nitroxide mediated polymerization (NMP) techniques. While poly(ethylene glycol) brushes served as hydrophilic block, the hydrophobic block was made of polystyrene brushes. The resulting "giant surfactants" correspond structurally to the established amphiphilic diblock and triblock copolymer known as macrosurfactants. The aggregation behavior of the novel "giant surfactants" in aqueous solution was studied by dynamic light scattering, small-angle neutron scattering (SANS), and small-angle X-ray scattering (SAXS) over a large range in reciprocal space. Further, the self-assembled aggregates were investigated by scanning force microscopy (SFM) after deposition on differently functionalized ultraflat solid substrates. Despite the high fraction of hydrophobic segments, the polymers form stable mesoscopic, spherical aggregates with hydrodynamic diameters in the range of 150-350 nm. Though prepared from well-defined individual polymers, the aggregates show several similarities to hard core latexes. They are stable enough to be deposited without much changes onto surfaces, where they cluster and show spontaneous sorting according to their size within the clusters, with the larger aggregates being in the center.
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Affiliation(s)
- Daniel Zehm
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany
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Adelsberger J, Kulkarni A, Jain A, Wang W, Bivigou-Koumba AM, Busch P, Pipich V, Holderer O, Hellweg T, Laschewsky A, Müller-Buschbaum P, Papadakis CM. Thermoresponsive PS-b-PNIPAM-b-PS Micelles: Aggregation Behavior, Segmental Dynamics, and Thermal Response. Macromolecules 2010. [DOI: 10.1021/ma902714p] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Joseph Adelsberger
- Physikdepartment E13, Technische Universität München, James-Franck-Str. 1, 85747 Garching, Germany
| | - Amit Kulkarni
- Physikdepartment E13, Technische Universität München, James-Franck-Str. 1, 85747 Garching, Germany
| | - Abhinav Jain
- Physikdepartment E13, Technische Universität München, James-Franck-Str. 1, 85747 Garching, Germany
| | - Weinan Wang
- Physikdepartment E13, Technische Universität München, James-Franck-Str. 1, 85747 Garching, Germany
| | | | - Peter Busch
- Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science at FRM II, Lichtenbergstr. 1, 85747 Garching, Germany
| | - Vitaliy Pipich
- Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science at FRM II, Lichtenbergstr. 1, 85747 Garching, Germany
| | - Olaf Holderer
- Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science at FRM II, Lichtenbergstr. 1, 85747 Garching, Germany
| | - Thomas Hellweg
- Physikalische Chemie I, Universität Bayreuth, Universitätsstr. 30, 95447 Bayreuth, Germany
| | - André Laschewsky
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany
| | - Peter Müller-Buschbaum
- Physikdepartment E13, Technische Universität München, James-Franck-Str. 1, 85747 Garching, Germany
| | - Christine M. Papadakis
- Physikdepartment E13, Technische Universität München, James-Franck-Str. 1, 85747 Garching, Germany
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Wang W, Kaune G, Perlich J, Papadakis CM, Bivigou Koumba AM, Laschewsky A, Schlage K, Röhlsberger R, Roth SV, Cubitt R, Müller-Buschbaum P. Swelling and switching kinetics of gold coated end-capped poly(N-isopropylacrylamide) thin films. Macromolecules 2010. [DOI: 10.1021/ma902637a] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- W. Wang
- TU München, Physik-Department LS E13, James-Franck-Strasse 1, 85747 Garching, Germany
| | - G. Kaune
- TU München, Physik-Department LS E13, James-Franck-Strasse 1, 85747 Garching, Germany
| | - J. Perlich
- TU München, Physik-Department LS E13, James-Franck-Strasse 1, 85747 Garching, Germany
- Deutsches Elektronen Synchrotron DESY, Notkestr. 85, 22603 Hamburg, Germany
| | - C. M. Papadakis
- TU München, Physik-Department LS E13, James-Franck-Strasse 1, 85747 Garching, Germany
| | - A. M. Bivigou Koumba
- Institut für Chemie, Potsdam Universität, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam-Golm, Germany
| | - A. Laschewsky
- Institut für Chemie, Potsdam Universität, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam-Golm, Germany
| | - K. Schlage
- Deutsches Elektronen Synchrotron DESY, Notkestr. 85, 22603 Hamburg, Germany
| | - R. Röhlsberger
- Deutsches Elektronen Synchrotron DESY, Notkestr. 85, 22603 Hamburg, Germany
| | - S. V. Roth
- Deutsches Elektronen Synchrotron DESY, Notkestr. 85, 22603 Hamburg, Germany
| | - R. Cubitt
- Institut Laue Langevin (ILL), 6 Jules Horowitz, 38042 Grenoble, France
| | - P. Müller-Buschbaum
- TU München, Physik-Department LS E13, James-Franck-Strasse 1, 85747 Garching, Germany
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Bivigou-Koumba AM, Görnitz E, Laschewsky A, Müller-Buschbaum P, Papadakis CM. Thermoresponsive amphiphilic symmetrical triblock copolymers with a hydrophilic middle block made of poly(N-isopropylacrylamide): synthesis, self-organization, and hydrogel formation. Colloid Polym Sci 2010. [DOI: 10.1007/s00396-009-2179-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Wang W, Metwalli E, Perlich J, Papadakis CM, Cubitt R, Müller-Buschbaum P. Cyclic Switching of Water Storage in Thin Block Copolymer Films Containing Poly(N-isopropylacrylamide). Macromolecules 2009. [DOI: 10.1021/ma901751n] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- W. Wang
- Physik-Department LS E13, TU München, James-Franck-Str. 1, 85747 Garching, Germany
| | - E. Metwalli
- Physik-Department LS E13, TU München, James-Franck-Str. 1, 85747 Garching, Germany
| | - J. Perlich
- Physik-Department LS E13, TU München, James-Franck-Str. 1, 85747 Garching, Germany
| | - C. M. Papadakis
- Physik-Department LS E13, TU München, James-Franck-Str. 1, 85747 Garching, Germany
| | - R. Cubitt
- Institut Laue Langevin (ILL), 6 Jules Horowitz, 38042 Grenoble, France
| | - P. Müller-Buschbaum
- Physik-Department LS E13, TU München, James-Franck-Str. 1, 85747 Garching, Germany
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Bivigou-Koumba AM, Kristen J, Laschewsky A, Müller-Buschbaum P, Papadakis CM. Synthesis of Symmetrical Triblock Copolymers of Styrene andN-isopropylacrylamide Using Bifunctional Bis(trithiocarbonate)s as RAFT Agents. MACROMOL CHEM PHYS 2009. [DOI: 10.1002/macp.200800575] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Schmidt S, Hellweg T, von Klitzing R. Packing density control in P(NIPAM-co-AAc) microgel monolayers: effect of surface charge, pH, and preparation technique. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:12595-602. [PMID: 18847289 DOI: 10.1021/la801770n] [Citation(s) in RCA: 99] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In the present paper, thermosensitive coatings are prepared by deposition of P(NIPAM-co-AAc) microgel particles on precoated silicon wafers. The effect of pH, substrate precoating, and preparation technique is studied. The pH value is found to significantly influence the adsorption density, while the substrate surface charge is less important. Hence, the electrostatic contribution of the particle-particle interaction seems to play a more pronounced role for the adsorption density than at least the electrostatic part of the particle-surface interaction. For the latter, also nonelectrostatic contributions like hydrogen bonding and surface roughness play an important role. Immersion of the prepared polyelectrolyte/microgel layers in buffers leads to a reorganization of the adsorbed particles at the surface.
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Affiliation(s)
- Stephan Schmidt
- Max-Planck-Institut fur Kolloid- and Grenzflachenforschung, 14424 Potsdam, Universitat Bayreuth, Physikalische Chemie I, Universitatsstrasse 30, D-95447 Bayreuth
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