1
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Prasser Q, Fuhs T, Torger B, Neubert R, Brendler E, Vogt C, Mertens F, Plamper FA. Nonequilibrium Colloids: Temperature-Induced Bouquet Formation of Flower-like Micelles as a Time-Domain-Shifting Macromolecular Heat Alert. ACS APPLIED MATERIALS & INTERFACES 2023; 15:57950-57959. [PMID: 37676903 PMCID: PMC10739602 DOI: 10.1021/acsami.3c09590] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 08/23/2023] [Indexed: 09/09/2023]
Abstract
Climate change requires enhanced autonomous temperature monitoring during logistics/transport. A cheap approach comprises the use of temperature-sensitive copolymers that undergo temperature-induced irreversible coagulation. The synthesis/characterization of pentablock copolymers (PBCP) starting from poloxamer PEO130-b-PPO44-b-PEO130 (poly(ethylene oxide)130-b-poly(propylene oxide)44-b-poly(ethylene oxide)130) and adding two terminal qPDMAEMA85 (quaternized poly[(2-dimethylamino)ethyl methacrylate]85) blocks is presented. Mixing of PBCP solutions with hexacyanoferrate(III)/ferricyanide solutions leads to a reduction of the decane/water interfacial tension accompanied by a co/self-assembly toward flower-like micelles in cold water because of the formation of an insoluble/hydrophobic qPDMAEMA/ferricyanide complex. In cold water, the PEO/PPO blocks provide colloidal stability over months. In hot water, the temperature-responsive PPO block is dehydrated, leading to a pronounced temperature dependence of the oil-water interfacial tension. In solution, the sticky PPO segments exposed at the micellar corona cause a colloidal clustering above a certain threshold temperature, which follows Smoluchowski-type kinetics. This coagulation remains for months even after cooling, indicating the presence of a kinetically trapped nonequilibrium state for at least one of the observed micellar structures. Therefore, the system memorizes a previous suffering of heat. This phenomenon is linked to an exchange of qPDMAEMA-blocks bridging the micellar cores after PPO-induced clustering. The addition of ferrous ions hampers the exchange, leading to the reversible coagulation of Prussian blue loaded micelles. Hence, the Fe2+ addition causes a shift from history monitoring to the sensing of the present temperature. Presumably, the system can be adapted for different temperatures in order to monitor transport and storage in a simple way. Hence, these polymeric "flowers" could contribute to preventing waste and sustaining the quality of goods (e.g., food) by temperature-induced bouquet formation, where an irreversible exchange of "tentacles" between the flowers stabilizes the bouquet at other temperatures as well.
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Affiliation(s)
- Quirin Prasser
- Institute
of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Straße 29, Freiberg 09599, Germany
| | - Thomas Fuhs
- Institute
of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Straße 29, Freiberg 09599, Germany
| | - Bernhard Torger
- Institute
of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Straße 29, Freiberg 09599, Germany
| | - Richard Neubert
- Institute
of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Straße 29, Freiberg 09599, Germany
| | - Erica Brendler
- Institute
of Analytical Chemistry, TU Bergakademie
Freiberg, Leipziger Straße 29, Freiberg 09599, Germany
| | - Carla Vogt
- Institute
of Analytical Chemistry, TU Bergakademie
Freiberg, Leipziger Straße 29, Freiberg 09599, Germany
| | - Florian Mertens
- Institute
of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Straße 29, Freiberg 09599, Germany
- Center
for Efficient High Temperature Processes and Materials Conversion
ZeHS, TU Bergakademie Freiberg, Winklerstraße 5, Freiberg 09599, Germany
| | - Felix A. Plamper
- Institute
of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Straße 29, Freiberg 09599, Germany
- Center
for Efficient High Temperature Processes and Materials Conversion
ZeHS, TU Bergakademie Freiberg, Winklerstraße 5, Freiberg 09599, Germany
- Freiberg
Center for Water Research ZeWaF, TU Bergakademie
Freiberg, Winklerstraße 5, Freiberg 09599, Germany
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2
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Prasser Q, Steinbach D, Münch AS, Neubert R, Weber C, Uhlmann P, Mertens F, Plamper FA. Interfacial Rearrangements of Block Copolymer Micelles Toward Gelled Liquid-Liquid Interfaces with Adjustable Viscoelasticity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2106956. [PMID: 35373537 DOI: 10.1002/smll.202106956] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 02/14/2022] [Indexed: 06/14/2023]
Abstract
Though amphiphiles are ubiquitously used for altering interfaces, interfacial reorganization processes are in many cases obscure. For example, adsorption of micelles to liquid-liquid interfaces is often accompanied by rapid reorganizations toward monolayers. Then, the involved time scales are too short to be followed accurately. A block copolymer system, which comprises poly(ethylene oxide)110 -b-poly{[2-(methacryloyloxy)ethyl]diisopropylmethylammonium chloride}170 (i.e., PEO110 -b-qPDPAEMA170 with quaternized poly(diisopropylaminoethyl methacrylate)) is presented. Its reorganization kinetics at the water/n-decane interface is slowed down by electrostatic interactions with ferricyanide ([Fe(CN)6 ]3- ). This deceleration allows an observation of the restructuring of the adsorbed micelles not only by tracing the interfacial pressure, but also by analyzing the interfacial rheology and structure with help of atomic force microscopy. The observed micellar flattening and subsequent merging toward a physically interconnected monolayer lead to a viscoelastic interface well detectable by interfacial shear rheology (ISR). Furthermore, the "gelled" interface is redox-active, enabling a return to purely viscous interfaces and hence a manipulation of the rheological properties by redox reactions. Additionally, interfacial Prussian blue formation stiffens the interface. Such manipulation and in-depth knowledge of the rheology of complex interfaces can be beneficial for the development of emulsion formulations in industry or medicine, where colloidal stability or adapted permeability is crucial.
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Affiliation(s)
- Quirin Prasser
- Institute of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, Freiberg, 09599, Germany
| | - Daniel Steinbach
- Institute of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, Freiberg, 09599, Germany
| | - Alexander S Münch
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden, 01069, Germany
| | - Richard Neubert
- Institute of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, Freiberg, 09599, Germany
| | - Christian Weber
- Federal Institute for Geosciences and Natural Resources, Stilleweg 2, Hannover, 30655, Germany
| | - Petra Uhlmann
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden, 01069, Germany
| | - Florian Mertens
- Institute of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, Freiberg, 09599, Germany
- Center for Efficient High Temperature Processes and Materials Conversion ZeHS, TU Bergakademie Freiberg, Winklerstr 5, Freiberg, 09599, Germany
| | - Felix A Plamper
- Institute of Physical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, Freiberg, 09599, Germany
- Center for Efficient High Temperature Processes and Materials Conversion ZeHS, TU Bergakademie Freiberg, Winklerstr 5, Freiberg, 09599, Germany
- Freiberg Center for Water Research ZeWaF, TU Bergakademie Freiberg, Winklerstraße 5, Freiberg, 09599, Germany
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3
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Dupré de Baubigny J, Perrin P, Pantoustier N, Salez T, Reyssat M, Monteux C. Growth Mechanism of Polymer Membranes Obtained by H-Bonding Across Immiscible Liquid Interfaces. ACS Macro Lett 2021; 10:204-209. [PMID: 35570784 DOI: 10.1021/acsmacrolett.0c00847] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Complexation of polymers at liquid interfaces is an emerging technique to produce all-liquid printable and self-healing devices and membranes. It is crucial to control the assembly process, but the mechanisms at play remain unclear. Using two different reflectometric methods, we investigate the spontaneous growth of H-bonded PPO-PMAA (polypropylene oxide-polymetacrylic acid) membranes at a flat liquid-liquid interface. We find that the membrane thickness h grows with time t as h ∼ t1/2, which is reminiscent of a diffusion-limited process. However, counterintuitively, we observe that this process is faster as the PPO molar mass increases. We are able to rationalize these results with a model which considers the diffusion of the PPO chains within the growing membrane. The architecture of the latter is described as a gel-like porous network, with a pore size much smaller than the radius of the diffusing PPO chains, thus inducing entropic barriers that hinder the diffusion process. From the comparison between the experimental data and the result of the model, we extract some key piece of information about the microscopic structure of the membrane. This study opens the route toward the rational design of self-assembled membranes and capsules with optimal properties.
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Affiliation(s)
- Julien Dupré de Baubigny
- Sciences et Ingénierie de La Matière Molle, UMR 7615, ESPCI Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ Paris 06, 75005 Paris, France
| | - Patrick Perrin
- Sciences et Ingénierie de La Matière Molle, UMR 7615, ESPCI Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ Paris 06, 75005 Paris, France
| | - Nadège Pantoustier
- Sciences et Ingénierie de La Matière Molle, UMR 7615, ESPCI Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ Paris 06, 75005 Paris, France
| | - Thomas Salez
- Université Bordeaux, CNRS, LOMA, UMR 5798, 33405 Talence, France
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, Hokkaido 001-0021, Japan
| | - Mathilde Reyssat
- UMR CNRS 7083 Gulliver, ESPCI Paris, PSL Research University, 75005 Paris, France
| | - Cécile Monteux
- Sciences et Ingénierie de La Matière Molle, UMR 7615, ESPCI Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ Paris 06, 75005 Paris, France
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, Hokkaido 001-0021, Japan
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4
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Prasser Q, Steinbach D, Kodura D, Schildknecht V, König K, Weber C, Brendler E, Vogt C, Peuker U, Barner-Kowollik C, Mertens F, Schacher FH, Goldmann AS, Plamper FA. Electrochemical Stimulation of Water-Oil Interfaces by Nonionic-Cationic Block Copolymer Systems. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:1073-1081. [PMID: 33356289 DOI: 10.1021/acs.langmuir.0c02822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Variable interfacial tension could be desirable for many applications. Beyond classical stimuli like temperature, we introduce an electrochemical approach employing polymers. Hence, aqueous solutions of the nonionic-cationic block copolymer poly(ethylene oxide)114-b-poly{[2-(methacryloyloxy)ethyl]diisopropylmethylammonium chloride}171 (i.e., PEO114-b-PDPAEMA171 with a quaternized poly(diisopropylaminoethyl methacrylate) block) were investigated by emerging drop measurements and dynamic light scattering, analyzing the PEO114-b-qPDPAEMA171 impact on the interfacial tension between water and n-decane and its micellar formation in the aqueous bulk phase. Potassium hexacyanoferrates (HCFs) were used as electroactive complexants for the charged block, which convert the bishydrophilic copolymer into amphiphilic species. Interestingly, ferricyanides ([Fe(CN)6]3-) act as stronger complexants than ferrocyanides ([Fe(CN)6]4-), leading to an insoluble qPDPAEMA block in the presence of ferricyanides. Hence, bulk micellization was demonstrated by light scattering. Due to their addressability, in situ redox experiments were performed to trace the interfacial tension under electrochemical control, directly utilizing a drop shape analyzer. Here, the open-circuit potential (OCP) was changed by electrolysis to vary the ratio between ferricyanides and ferrocyanides in the aqueous solution. While a chemical oxidation/reduction is feasible, also an electrochemical oxidation leads to a significant change in the interfacial tension properties. In contrast, a corresponding electrochemical reduction showed only a slight response after converting ferricyanides to ferrocyanides. Atomic force microscopy (AFM) images of the liquid/liquid interface transferred to a solid substrate showed particles that are in accordance with the diameter from light scattering experiments of the bulk phase. In conclusion, the present results could be an important step toward economic switching of interfaces suitable, e.g., for emulsion breakage.
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Affiliation(s)
- Quirin Prasser
- Institute of Physical Chemistry, TU Bergakademie Freiberg, 09599 Freiberg, Germany
| | - Daniel Steinbach
- Institute of Physical Chemistry, TU Bergakademie Freiberg, 09599 Freiberg, Germany
| | - Daniel Kodura
- Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia
- School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia
| | - Vincent Schildknecht
- Institute of Physical Chemistry, TU Bergakademie Freiberg, 09599 Freiberg, Germany
| | - Katja König
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller University Jena, D-07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, D-07743 Jena, Germany
| | - Christian Weber
- Institute of Mechanical Process Engineering and Mineral Processing, TU Bergakademie Freiberg, Agricolastraße 1, 09599 Freiberg, Germany
- Federal Institute for Geosciences and Natural Resources, Stilleweg 2, 30655 Hannover, Germany
| | - Erica Brendler
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Straße 29, 09599 Freiberg, Germany
| | - Carla Vogt
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Straße 29, 09599 Freiberg, Germany
| | - Urs Peuker
- Institute of Mechanical Process Engineering and Mineral Processing, TU Bergakademie Freiberg, Agricolastraße 1, 09599 Freiberg, Germany
| | - Christopher Barner-Kowollik
- Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia
- School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia
| | - Florian Mertens
- Institute of Physical Chemistry, TU Bergakademie Freiberg, 09599 Freiberg, Germany
| | - Felix H Schacher
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller University Jena, D-07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, D-07743 Jena, Germany
| | - Anja S Goldmann
- Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia
- School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia
| | - Felix A Plamper
- Institute of Physical Chemistry, TU Bergakademie Freiberg, 09599 Freiberg, Germany
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5
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Man Y, Li X, Li S, Yang Z, Lee YI, Liu HG. Effects of hydrophobic/hydrophilic blocks ratio on PS-b-PAA self-assembly in solutions, in emulsions, and at the interfaces. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123684] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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6
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Scotti A, Bochenek S, Brugnoni M, Fernandez-Rodriguez MA, Schulte MF, Houston JE, Gelissen APH, Potemkin II, Isa L, Richtering W. Exploring the colloid-to-polymer transition for ultra-low crosslinked microgels from three to two dimensions. Nat Commun 2019; 10:1418. [PMID: 30926786 PMCID: PMC6441029 DOI: 10.1038/s41467-019-09227-5] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 02/19/2019] [Indexed: 11/18/2022] Open
Abstract
Microgels are solvent-swollen nano- and microparticles that show prevalent colloidal-like behavior despite their polymeric nature. Here we study ultra-low crosslinked poly(N-isopropylacrylamide) microgels (ULC), which can behave like colloids or flexible polymers depending on dimensionality, compression or other external stimuli. Small-angle neutron scattering shows that the structure of the ULC microgels in bulk aqueous solution is characterized by a density profile that decays smoothly from the center to a fuzzy surface. Their phase behavior and rheological properties are those of soft colloids. However, when these microgels are confined at an oil-water interface, their behavior resembles that of flexible macromolecules. Once monolayers of ultra-low crosslinked microgels are compressed, deposited on solid substrate and studied with atomic-force microscopy, a concentration-dependent topography is observed. Depending on the compression, these microgels can behave as flexible polymers, covering the substrate with a uniform film, or as colloidal microgels leading to a monolayer of particles.
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Affiliation(s)
- A Scotti
- Institute of Physical Chemistry, RWTH Aachen University, 52056, Aachen, Germany.
| | - S Bochenek
- Institute of Physical Chemistry, RWTH Aachen University, 52056, Aachen, Germany
| | - M Brugnoni
- Institute of Physical Chemistry, RWTH Aachen University, 52056, Aachen, Germany
| | - M A Fernandez-Rodriguez
- Laboratory for Interfaces, Soft Matter and Assembly, Department of Materials, ETH Zurich, 8093, Zurich, Switzerland
| | - M F Schulte
- Institute of Physical Chemistry, RWTH Aachen University, 52056, Aachen, Germany
| | - J E Houston
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ) Forschungszentrum Jülich GmbH, 85748, Garching, Germany
- European Spallation Source ERIC, Box 176,, SE-221 00, Lund, Sweden
| | - A P H Gelissen
- Institute of Physical Chemistry, RWTH Aachen University, 52056, Aachen, Germany
| | - I I Potemkin
- Physics Department, Lomonosov Moscow State University, 119991, Moscow, Russian Federation
- DWI - Leibniz Institute for Interactive Materials, Aachen, 52056, Germany
- National Research South Ural State University, Chelyabinsk, 454080, Russian Federation
| | - L Isa
- Laboratory for Interfaces, Soft Matter and Assembly, Department of Materials, ETH Zurich, 8093, Zurich, Switzerland
| | - W Richtering
- Institute of Physical Chemistry, RWTH Aachen University, 52056, Aachen, Germany.
- JARA-SOFT, 52056, Aachen, Germany.
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7
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Hebbeker P, Plamper FA, Schneider S. Aggregation of Star Polymers: Complexation versus Segregation. MACROMOL THEOR SIMUL 2018. [DOI: 10.1002/mats.201800033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Pascal Hebbeker
- Institute of Physical Chemistry; RWTH Aachen University; 52074 Aachen Germany
| | - Felix A. Plamper
- Institute of Physical Chemistry; RWTH Aachen University; 52074 Aachen Germany
| | - Stefanie Schneider
- Institute of Physical Chemistry; RWTH Aachen University; 52074 Aachen Germany
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8
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Hebbeker P, Langen TG, Plamper FA, Schneider S. Spacer Chains Prevent the Intramolecular Complexation in Miktoarm Star Polymers. J Phys Chem B 2018; 122:4729-4736. [PMID: 29630376 DOI: 10.1021/acs.jpcb.8b01663] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The influence of spacer chains on the intramolecular complexation in star-shaped heteroarm (miktoarm) polymers is investigated. To overcome the mutual attraction of different polymeric components present in a miktoarm star with different homopolymeric arms, spacer chains of different length are attached to the core of the star at three different positions. In most of the investigated cases, this leads to diblock copolymer arms within the miktoarm star. Hereby, the inner spacer separates the outer blocks from their attractively interacting homopolymeric arms. The effect on the intramolecular complexation and the structure of the star polymer is obtained by Monte Carlo simulations of a simple bead-spring model. Then, long spacers can completely prevent the complexation. Both, local shielding by the spacer chains and the increased distance between the complex-forming polymers due to the spacer chains inhibit the complex formation. For a range of spacer positions and lengths, an equilibrium between a system forming a complex and a complex free system is found. The spacer chains can be used as a tool to tune the intramolecular complexation.
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Affiliation(s)
- Pascal Hebbeker
- Institute of Physical Chemistry , RWTH Aachen University , D-52074 Aachen , Germany
| | - Tabea G Langen
- Institute of Physical Chemistry , RWTH Aachen University , D-52074 Aachen , Germany
| | - Felix A Plamper
- Institute of Physical Chemistry , RWTH Aachen University , D-52074 Aachen , Germany
| | - Stefanie Schneider
- Institute of Physical Chemistry , RWTH Aachen University , D-52074 Aachen , Germany
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9
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Dähling C, Houston JE, Radulescu A, Drechsler M, Brugnoni M, Mori H, Pergushov DV, Plamper FA. Self-Templated Generation of Triggerable and Restorable Nonequilibrium Micelles. ACS Macro Lett 2018; 7:341-346. [PMID: 35632909 DOI: 10.1021/acsmacrolett.8b00096] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Conditional variations can lead to micellar transformations resulting in various (equilibrium) morphologies. However, creating differently shaped assemblies under the same final conditions (same ingredients, composition, temperature, etc.) is challenging. We present a thermoresponsive polyelectrolyte system allowing a pathway-dependent preparation of kinetically stable spherical star-like or cylindrical micelles. In more detail, a temperature-induced structure switch is used to generate equilibrated interpolyelectrolyte complex (IPEC) micelles of different morphologies (templates) below and above the lower critical solution temperature in the presence of plasticizer (salt). Then, lowering the salt concentration at a specific temperature kinetically freezes the formed IPECs, keeping the respective microstructural information encoded in the frozen IPEC also at other temperatures. Hence, different nonequilibrium morphologies at the same final conditions are provided. The salt-triggered transition from nonequilibrium to equilibrium micelles can be repeated for the same sample, highlighting a system with an on-demand changeable and restorable structure.
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Affiliation(s)
- Claudia Dähling
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
| | - Judith E. Houston
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstraße 1, 85748 Garching, Germany
| | - Aurel Radulescu
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstraße 1, 85748 Garching, Germany
| | - Markus Drechsler
- Bavarian Polymer Institute, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany
| | - Monia Brugnoni
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
| | - Hideharu Mori
- Department of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Japan
| | - Dmitry V. Pergushov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, 119991 Moscow, Russia
| | - Felix A. Plamper
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany
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10
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Adjusting the size of multicompartmental containers made of anionic liposomes and polycations by introducing branching and PEO moieties. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.05.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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11
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Hebbeker P, Steinschulte AA, Schneider S, Plamper FA. Balancing Segregation and Complexation in Amphiphilic Copolymers by Architecture and Confinement. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4091-4106. [PMID: 28221801 DOI: 10.1021/acs.langmuir.6b04602] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Segregation is a well-known principle for micellization, as solvophobic components try to minimize interactions with other entities (such as solvent) by self-assembly. An opposite principle is based on complexation (or coacervation), leading to the coassembly/association of different components. Most cases in the literature rely on only one of these modes, though the classical micellization scheme (such as spherical micelles, wormlike micelles, and vesicles) can be enriched by a subtle balance of segregation and complexation. Because of their counteraction, micellar constructs with unprecedented structure and behavior could be obtained. In this feature, systems are highlighted, which are between both mechanisms, and we study concentration, architecture, and confinement effects. Systems with inter- and intramolecular interactions are presented, and the effects of polymer topology and monomer sequence on the resulting structures are discussed. It is shown that complexation can lead to altered micellization behavior as the complex of one hydrophobic and one hydrophilic component can have a very low surface tension toward the solvent. Then, the more soluble component is enriched at the surface of the complex and acts as a microsurfactant. Although segregation dominates for amphiphilic copolymers in solution, the effect of the complexation can be enhanced by branching (change of architecture). Another possibility to enhance the complexation is by confining copolymers in a (pseudo-) 2D environment (like the one available at liquid-liquid interfaces). These observations show how new structural features can be achieved by tuning the subtle balance between segregation and complexation/solubilization.
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Affiliation(s)
- Pascal Hebbeker
- Institute of Physical Chemistry II, RWTH Aachen University , Landoltweg 2, 52056 Aachen, Germany
| | - Alexander A Steinschulte
- Institute of Physical Chemistry II, RWTH Aachen University , Landoltweg 2, 52056 Aachen, Germany
| | - Stefanie Schneider
- Institute of Physical Chemistry II, RWTH Aachen University , Landoltweg 2, 52056 Aachen, Germany
| | - Felix A Plamper
- Institute of Physical Chemistry II, RWTH Aachen University , Landoltweg 2, 52056 Aachen, Germany
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12
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Korolovych VF, Ledin PA, Stryutsky A, Shevchenko VV, Sobko O, Xu W, Bulavin LA, Tsukruk VV. Assembly of Amphiphilic Hyperbranched Polymeric Ionic Liquids in Aqueous Media at Different pH and Ionic Strength. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01562] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Volodymyr F. Korolovych
- School
of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Petr A. Ledin
- School
of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Alexandr Stryutsky
- Institute
of Macromolecular Chemistry, National Academy of Sciences of Ukraine, Kharkivske Shosse 48, Kyiv 02160, Ukraine
| | - Valery V. Shevchenko
- Institute
of Macromolecular Chemistry, National Academy of Sciences of Ukraine, Kharkivske Shosse 48, Kyiv 02160, Ukraine
| | - Oleh Sobko
- Institute
of Macromolecular Chemistry, National Academy of Sciences of Ukraine, Kharkivske Shosse 48, Kyiv 02160, Ukraine
| | - Weinan Xu
- School
of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Leonid A. Bulavin
- Taras Shevchenko
National University of Kyiv, Volodymyrska
Str. 64, 01601 Kyiv, Ukraine
| | - Vladimir V. Tsukruk
- School
of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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13
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Hebbeker P, Steinschulte AA, Schneider S, Okuda J, Möller M, Plamper FA, Schneider S. Complexation in Weakly Attractive Copolymers with Varying Composition and Topology: Linking Fluorescence Experiments and Molecular Monte Carlo Simulations. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01786] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Pascal Hebbeker
- Institute
of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52074 Aachen, Germany
| | | | - Sabine Schneider
- Institute
of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52074 Aachen, Germany
| | - Jun Okuda
- Institute
of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Martin Möller
- DWI−Leibniz
Institute for Interactive Materials, and Functional Interactive Polymers,
Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstr. 50, 52056 Aachen, Germany
| | - Felix A. Plamper
- Institute
of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52074 Aachen, Germany
| | - Stefanie Schneider
- Institute
of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52074 Aachen, Germany
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14
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Dähling C, Lotze G, Drechsler M, Mori H, Pergushov DV, Plamper FA. Temperature-induced structure switch in thermo-responsive micellar interpolyelectrolyte complexes: toward core-shell-corona and worm-like morphologies. SOFT MATTER 2016; 12:5127-5137. [PMID: 27194585 DOI: 10.1039/c6sm00757k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The spontaneous formation and thermo-responsiveness of a colloidally-stable interpolyelectrolyte complex (IPEC) based on a linear temperature-sensitive diblock copolymer poly(vinyl sulfonate)31-b-poly(N-isopropyl acrylamide)27 (PVS31-b-PNIPAM27) and a star-shaped quaternized miktoarm polymer poly(ethylene oxide)114-(poly(2-(dimethylamino)ethyl methacrylate)17)4 (PEO114-(qPDMAEMA17)4) was investigated in aqueous media at 0.3 M NaCl by means of dynamic light scattering (DLS), small angle X-ray scattering (SAXS), and cryogenic transmission electron microscopy (cryo-TEM). The micellar macromolecular co-assemblies show a temperature-dependent size and morphology, which result from the lower critical solution temperature (LCST) behavior of the PNIPAM-blocks. Hence, the micellar co-assemblies grow upon heating. At 60 °C, spherical core-shell-corona co-assemblies are proposed with a hydrophobic PNIPAM core, a water-insoluble IPEC shell, and a hydrophilic PEO corona. These constructs develop into a rod-like structure upon extended equilibration. In turn, PEO-arms and PNIPAM-blocks within a hydrophilic mixed two-component corona surround the water-insoluble IPEC domain at 20 °C, thereby forming spherical core-corona co-assemblies. Reversibility of the structural changes is suggested by the scattering data. This contribution addresses the use of a combination of oppositely charged thermo-responsive and bis-hydrophilic star-shaped polymeric components toward IPECs of diverse morphological types.
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Affiliation(s)
- Claudia Dähling
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany.
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15
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Zhao X, Wang Q, Zhang X, Lee YI, Liu HG. Influence of gold species (AuCl4−and AuCl2−) on self-assembly of PS-b-P2VP in solutions and morphology of composite thin films fabricated at the air/liquid interfaces. Phys Chem Chem Phys 2016; 18:1945-52. [DOI: 10.1039/c5cp06267e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new and facile approach was developed to fabricate functional composite films of block copolymers at the air/liquid interface through a self-emulsification, self-assembly and adsorption process.
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Affiliation(s)
- Xingjuan Zhao
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Shandong University
- Jinan 250100
- P. R. China
| | - Qian Wang
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Shandong University
- Jinan 250100
- P. R. China
| | - Xiaokai Zhang
- College of Physics and Electronics
- Shandong Normal University
- Jinan 250014
- P. R. China
| | - Yong-Ill Lee
- Anastro Laboratory
- Department of Chemistry
- Changwon National University
- Changwon 641-773
- Korea
| | - Hong-Guo Liu
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Shandong University
- Jinan 250100
- P. R. China
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16
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Herzberger J, Niederer K, Pohlit H, Seiwert J, Worm M, Wurm FR, Frey H. Polymerization of Ethylene Oxide, Propylene Oxide, and Other Alkylene Oxides: Synthesis, Novel Polymer Architectures, and Bioconjugation. Chem Rev 2015; 116:2170-243. [PMID: 26713458 DOI: 10.1021/acs.chemrev.5b00441] [Citation(s) in RCA: 451] [Impact Index Per Article: 50.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The review summarizes current trends and developments in the polymerization of alkylene oxides in the last two decades since 1995, with a particular focus on the most important epoxide monomers ethylene oxide (EO), propylene oxide (PO), and butylene oxide (BO). Classical synthetic pathways, i.e., anionic polymerization, coordination polymerization, and cationic polymerization of epoxides (oxiranes), are briefly reviewed. The main focus of the review lies on more recent and in some cases metal-free methods for epoxide polymerization, i.e., the activated monomer strategy, the use of organocatalysts, such as N-heterocyclic carbenes (NHCs) and N-heterocyclic olefins (NHOs) as well as phosphazene bases. In addition, the commercially relevant double-metal cyanide (DMC) catalyst systems are discussed. Besides the synthetic progress, new types of multifunctional linear PEG (mf-PEG) and PPO structures accessible by copolymerization of EO or PO with functional epoxide comonomers are presented as well as complex branched, hyperbranched, and dendrimer like polyethers. Amphiphilic block copolymers based on PEO and PPO (Poloxamers and Pluronics) and advances in the area of PEGylation as the most important bioconjugation strategy are also summarized. With the ever growing toolbox for epoxide polymerization, a "polyether universe" may be envisaged that in its structural diversity parallels the immense variety of structural options available for polymers based on vinyl monomers with a purely carbon-based backbone.
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Affiliation(s)
- Jana Herzberger
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany.,Graduate School Materials Science in Mainz , Staudingerweg 9, D-55128 Mainz, Germany
| | - Kerstin Niederer
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Hannah Pohlit
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany.,Graduate School Materials Science in Mainz , Staudingerweg 9, D-55128 Mainz, Germany.,Max Planck Graduate Center , Staudingerweg 6, D-55128 Mainz, Germany.,Department of Dermatology, University Medical Center , Langenbeckstraße 1, D-55131 Mainz, Germany
| | - Jan Seiwert
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Matthias Worm
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany.,Max Planck Graduate Center , Staudingerweg 6, D-55128 Mainz, Germany
| | - Frederik R Wurm
- Max Planck Graduate Center , Staudingerweg 6, D-55128 Mainz, Germany.,Max Planck Institute for Polymer Research , Ackermannweg 10, D-55128 Mainz, Germany
| | - Holger Frey
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz , Duesbergweg 10-14, D-55128 Mainz, Germany.,Graduate School Materials Science in Mainz , Staudingerweg 9, D-55128 Mainz, Germany
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17
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Xu W, Ledin PA, Shevchenko VV, Tsukruk VV. Architecture, Assembly, and Emerging Applications of Branched Functional Polyelectrolytes and Poly(ionic liquid)s. ACS APPLIED MATERIALS & INTERFACES 2015; 7:12570-12596. [PMID: 26010902 DOI: 10.1021/acsami.5b01833] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Branched polyelectrolytes with cylindrical brush, dendritic, hyperbranched, grafted, and star architectures bearing ionizable functional groups possess complex and unique assembly behavior in solution at surfaces and interfaces as compared to their linear counterparts. This review summarizes the recent developments in the introduction of various architectures and understanding of the assembly behavior of branched polyelectrolytes with a focus on functional polyelectrolytes and poly(ionic liquid)s with responsive properties. The branched polyelectrolytes and poly(ionic liquid)s interact electrostatically with small molecules, linear polyelectrolytes, or other branched polyelectrolytes to form assemblies of hybrid nanoparticles, multilayer thin films, responsive microcapsules, and ion-conductive membranes. The branched structures lead to unconventional assemblies and complex hierarchical structures with responsive properties as summarized in this review. Finally, we discuss prospectives for emerging applications of branched polyelectrolytes and poly(ionic liquid)s for energy harvesting and storage, controlled delivery, chemical microreactors, adaptive surfaces, and ion-exchange membranes.
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Affiliation(s)
- Weinan Xu
- †School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Petr A Ledin
- †School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Valery V Shevchenko
- ‡Institute of Macromolecular Chemistry, National Academy of Sciences of Ukraine, Kharkovskoe shosse 48, Kiev 02160, Ukraine
| | - Vladimir V Tsukruk
- †School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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18
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Xu W, Ledin PA, Iatridi Z, Tsitsilianis C, Tsukruk VV. Multiresponsive Star-Graft Quarterpolymer Monolayers. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00401] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Weinan Xu
- School
of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
| | - Petr A. Ledin
- School
of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
| | - Zacharoula Iatridi
- Department
of Chemical Engineering, University of Patras, 26504 Patras, Greece
- Institute of Chemical
Engineering Sciences (FORTH/ICE-HT), 26504 Patras, Greece
| | - Constantinos Tsitsilianis
- Department
of Chemical Engineering, University of Patras, 26504 Patras, Greece
- Institute of Chemical
Engineering Sciences (FORTH/ICE-HT), 26504 Patras, Greece
| | - Vladimir V. Tsukruk
- School
of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
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