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Li B, Wang YL. Self-Assembly of Miktoarm Star Polyelectrolytes in Solutions with Various Ionic Strengths. ACS OMEGA 2022; 7:20791-20799. [PMID: 35755333 PMCID: PMC9219065 DOI: 10.1021/acsomega.2c01317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
We studied the self-assembly of miktoarm star polyelectrolytes with different numbers of arms in solutions with various ionic strengths using coarse-grained molecular dynamic simulations. Spherical micelles are obtained for star polyelectrolytes with fewer arms, whereas wormlike clusters are obtained for star polyelectrolytes with more arms at a low ionic strength environment, with hydrophilic arms showing a stretched conformation. The number of clusters shows an overall decreasing tendency with increasing the number of arms in star polyelectrolytes due to strong electrostatic coupling between polycations and polyanions. The formation of wormlike clusters follows an overall stepwise pathway with an intermittent association-dissociation process for star polyelectrolytes with weak electrostatic coupling. These computational results can provide relevant physical insights to understand the self-assembly mechanism of star polyelectrolytes in solvents with various ionic strengths and to design star polyelectrolytes with functional groups that can fine-tune self-assembled structures for specific applications.
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Affiliation(s)
- Bin Li
- School
of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
| | - Yong-Lei Wang
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
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2
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Landsgesell J, Beyer D, Hebbeker P, Košovan P, Holm C. The pH-Dependent Swelling of Weak Polyelectrolyte Hydrogels Modeled at Different Levels of Resolution. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jonas Landsgesell
- Institute for Computational Physics, University of Stuttgart, D-70569 Stuttgart, Germany
| | - David Beyer
- Institute for Computational Physics, University of Stuttgart, D-70569 Stuttgart, Germany
| | - Pascal Hebbeker
- Department of Physical and Macromolecular Chemistry, Charles University, Prague 116 36, Czechia
| | - Peter Košovan
- Department of Physical and Macromolecular Chemistry, Charles University, Prague 116 36, Czechia
| | - Christian Holm
- Institute for Computational Physics, University of Stuttgart, D-70569 Stuttgart, Germany
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3
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Mons PJ, Fribiczer N, Kowalczuk K, Poudel P, Seiffert S, Schacher FH. Double hydrophilic poly(ethylene glycol)- block-poly(dehydroalanine) four-arm star block copolymers: synthesis and solution behavior. Polym Chem 2022. [DOI: 10.1039/d2py00579d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the synthesis and solution behavior of double hydrophilic star-shaped block copolymers featuring an ampholytic polydehydroalanine segment.
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Affiliation(s)
- Peter J. Mons
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Lessingstraße 8, D-07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
| | - Nora Fribiczer
- Department of Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10–14, D-55128 Mainz, Germany
| | - Kathrin Kowalczuk
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Lessingstraße 8, D-07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
| | - Purushottam Poudel
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Lessingstraße 8, D-07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
| | - Sebastian Seiffert
- Department of Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10–14, D-55128 Mainz, Germany
| | - Felix H. Schacher
- Institute of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Lessingstraße 8, D-07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC), Friedrich-Schiller-University Jena, Philosophenweg 7, D-07743 Jena, Germany
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Staňo R, Košovan P, Tagliabue A, Holm C. Electrostatically Cross-Linked Reversible Gels—Effects of pH and Ionic Strength. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00470] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Roman Staňo
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 43 Prague, Czech Republic
| | - Peter Košovan
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 43 Prague, Czech Republic
| | - Andrea Tagliabue
- Dipartimento di Scienza ed Alta Tecnologia, Universitá degli Studi dell’Insubria, via Valleggio 9, 22100 Como, Italy
| | - Christian Holm
- Institute for Computational Physics, University of Stuttgart, D-70569 Stuttgart, Germany
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