1
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Heo TY, Choi SH. Ionic Strength-Dependent Structure of Complex Coacervate Core Micelles. J Phys Chem B 2024; 128:1256-1265. [PMID: 38288748 DOI: 10.1021/acs.jpcb.3c06004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Salt concentration-dependent structure of complex coacervate core micelles (C3Ms), formed by polyether-based block copolyelectrolytes containing cationic ammonium (A) or anionic sulfonate (S) groups in aqueous media, is investigated by light scattering and small-angle X-ray/neutron scattering (SAX/NS). As the salt concentration increases, both a core radius (Rcore) and an aggregation number (Nagg) significantly decrease, but a corona thickness (Lcorona) is nearly unchanged. Larger salt concentrations can lower the interfacial tension between the coacervate cores and aqueous media, resulting in an increased interfacial area per chain and a more relaxed conformation of the core blocks. Based on the structure characterization, the scaling relationship between structure parameters (i.e., Rcore, Nagg, and Lcorona) and salt concentration is obtained and compared to the theoretical description estimated by the free energy balance between the entropic penalty of core stretching and the interfacial energy. We propose that the free energy contribution of the core block stretching is not negligible in C3Ms because of the highly swollen cores caused by water.
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Affiliation(s)
- Tae-Young Heo
- Department of Chemical Engineering, Hongik University, Seoul 04066, Republic of Korea
| | - Soo-Hyung Choi
- Department of Chemical Engineering, Hongik University, Seoul 04066, Republic of Korea
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2
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Sato T. Kinetics of Micellization and Liquid-Liquid Phase Separation in Dilute Block Copolymer Solutions. Polymers (Basel) 2023; 15:polym15030708. [PMID: 36772009 PMCID: PMC9920675 DOI: 10.3390/polym15030708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/22/2023] [Accepted: 01/24/2023] [Indexed: 02/04/2023] Open
Abstract
A lattice theory for block copolymer solutions near the boundary between the micellization and liquid-liquid phase separation regions proposes a new kinetic process of micellization where small concentrated-phase droplets are first formed and then transformed into micelles in the early stage of micellization. Moreover, the thermodynamically stable concentrated phase formed from metastable micelles by a unique ripening process in the late stage of phase separation, where the growing concentrated-phase droplet size is proportional to the square root of the time.
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Affiliation(s)
- Takahiro Sato
- Osaka Study Center, The Open University of Japan, 4-9-23, Onohara-Higashi, Osaka 562-0031, Japan
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3
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Pham TT, Takahashi R, Pham TD, Yusa SI. Stable Water-soluble Polyion Complex Micelles Composed of Oppositely Charged Diblock Copolymers and Reinforced by Hydrophobic Interactions. CHEM LETT 2022. [DOI: 10.1246/cl.220241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Thu Thao Pham
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Rintaro Takahashi
- Department of Energy Engineering, Graduate School of Engineering, Nagoya University, Furo-cho Chikusa-ku, Nagoya, Aichi, 464-8603, Japan
| | - Tien Duc Pham
- Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi 100000, Vietnam
| | - Shin-ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
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4
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Polyion complex (PIC) micelles formed from oppositely charged styrene-based polyelectrolytes via electrostatic, hydrophobic, and π–π interactions. Polym J 2022. [DOI: 10.1038/s41428-022-00659-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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5
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Han J, Takahashi R, Kuang C, Sato T. Phase Separation Behavior of Aqueous Poly( N-isopropylacrylamide) Solutions Studied by Scattering Experiments. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5089-5097. [PMID: 34554751 DOI: 10.1021/acs.langmuir.1c01917] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We have investigated the colloidal phase-separating dilute solution of aqueous poly(N-isopropylacrylamide) (PNIPAM) with a molecular weight of 1.24 × 105 by small-angle X-ray scattering (SAXS) as well as static and dynamic light scattering (SLS and DLS). Those scattering experiments provide us with the average size and size distribution of concentrated-phase droplets and the concentration cconc of the coexisting concentrated phase. While the average droplet size is almost constant above 35 °C in the temperature-scan experiments, it is a decreasing function of temperature above 35 °C in the temperature-jump experiments. This heating rate dependence of the average droplet size arises from the fact that concentrated-phase droplets in the aqueous PNIPAM solution grow only in a limited temperature range (31.5-35 °C). The scattering results on the temperature dependence of cconc are combined with previously reported results of turbidity and DSC, giving the phase diagram of the Type II phase behavior with the off-zero critical point at high molecular weight.
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Affiliation(s)
- Jiayun Han
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Rintaro Takahashi
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Department of Energy Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Chen Kuang
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Takahiro Sato
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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6
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Takahashi R, Narayanan T, Yusa SI, Sato T. Formation Kinetics of Polymer Vesicles from Spherical and Cylindrical Micelles Bearing the Polyelectrolyte Complex Core Studied by Time-Resolved USAXS and SAXS. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02210] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Rintaro Takahashi
- ESRF─The European Synchrotron, 71 Avenue des Martyrs, Grenoble F-38043, France
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Department of Energy Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | | | - Shin-ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Takahiro Sato
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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7
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Marras AE, Ting JM, Stevens KC, Tirrell MV. Advances in the Structural Design of Polyelectrolyte Complex Micelles. J Phys Chem B 2021; 125:7076-7089. [PMID: 34160221 PMCID: PMC9282648 DOI: 10.1021/acs.jpcb.1c01258] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Polyelectrolyte complex micelles (PCMs) are a unique class of self-assembled nanoparticles that form with a core of associated polycations and polyanions, microphase-separated from neutral, hydrophilic coronas in aqueous solution. The hydrated nature and structural and chemical versatility make PCMs an attractive system for delivery and for fundamental polymer physics research. By leveraging block copolymer design with controlled self-assembly, fundamental structure-property relationships can be established to tune the size, morphology, and stability of PCMs precisely in pursuit of tailored nanocarriers, ultimately offering storage, protection, transport, and delivery of active ingredients. This perspective highlights recent advances in predictive PCM design, focusing on (i) structure-property relationships to target specific nanoscale dimensions and shapes and (ii) characterization of PCM dynamics primarily using time-resolved scattering techniques. We present several vignettes from these two emerging areas of PCM research and discuss key opportunities for PCM design to advance precision medicine.
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Affiliation(s)
- Alexander E Marras
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
| | - Jeffrey M Ting
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
| | - Kaden C Stevens
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
| | - Matthew V Tirrell
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
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8
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Jiang J, Chen EQ, Yang S. The effect of ion pairs on coacervate-driven self-assembly of block polyelectrolytes. J Chem Phys 2021; 154:144903. [PMID: 33858167 DOI: 10.1063/5.0044845] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The incorporation of oppositely charged polyelectrolytes into a block copolymer system can lead to formation of microphase separated nanostructures driven by the electrostatic complex between two oppositely charged blocks. It is a theoretical challenge to build an appropriate model to handle such coacervate-driven self-assembly, which should capture the strong electrostatic correlations for highly charged polymers. In this paper, we develop the self-consistent field theory considering the ion paring effect to predict the phase behavior of block polyelectrolytes. In our model, two types of ion pairs, the binding between two oppositely charged monomers and the binding between charged monomers and counterions, are included. Their strength of formation is controlled by two parameters Kaa and Kac, respectively. We give a detailed analysis about how the binding strength Kac and Kaa and salt concentration affect the self-assembled nanostructure of diblock polyelectrolyte systems. The results show that the binding between two oppositely charged blocks provides driven force for microphase separation, while the binding between charged monomers and counterions competes with the polyion pairing and thus suppresses the microphase separation. The addition of salt has a shielding effect on the charges of polymers, which is a disadvantage to microphase separation. The phase diagrams as a function of polymer concentration and salt concentration at different situations are constructed, and the influence of Kaa, Kac, and charged block composition fa is analyzed in depth. The obtained phase diagrams are in good agreement with currently existing experimental and theoretical results.
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Affiliation(s)
- Jiadi Jiang
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, People's Republic of China
| | - Er-Qiang Chen
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, People's Republic of China
| | - Shuang Yang
- Beijing National Laboratory for Molecular Sciences, Department of Polymer Science and Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, People's Republic of China
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9
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Yang J, Sato T. Transition from the random coil to the flower necklace of a hydrophobically modified pullulan in aqueous solution by changing the degree of substitution. POLYMER 2021. [DOI: 10.1016/j.polymer.2020.123346] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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10
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Gioldasis C, Gergidis LN, Vlahos C. Micellization through complexation of oppositely charged diblock copolymers: Effects of composition, polymer architecture, salt of different valency, and thermoresponsive block. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200754] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
| | - Leonidas N. Gergidis
- Department of Materials Science and Engineering University of Ioannina Ioannina Greece
| | - Costas Vlahos
- Department of Chemistry University of Ioannina Ioannina Greece
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11
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Yang J, Sato T. Micellar Structure of a Hydrophobically Modified Pullulan in an Aqueous Solution. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01319] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jia Yang
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Takahiro Sato
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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12
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Yang J, Sato T. Conformation of Pullulan in Aqueous Solution Studied by Small-Angle X-Ray Scattering. Polymers (Basel) 2020; 12:polym12061266. [PMID: 32492916 PMCID: PMC7362014 DOI: 10.3390/polym12061266] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 05/31/2020] [Accepted: 06/01/2020] [Indexed: 12/03/2022] Open
Abstract
Small-angle X-ray scattering functions were measured for six pullulan samples with molecular weights ranging from 2.3 × 104 to 7.4 × 105 in 0.05 M aqueous NaCl at 25 °C and fitted by the perturbed wormlike chain model, comprising touched-bead sub-bodies, to obtain wormlike chain parameters. The parameter values determined were consistent with those determined from previously reported dilute solution properties of aqueous pullulan. Because radii of gyration of not only pullulan polymers, but also pullulan oligomers were consistently explained by the touched-bead wormlike chain model perturbed by the excluded volume effect, the pullulan chain takes a local conformation considerably different from the amylose chain, although both polysaccharides are flexible polymers with an approximately same characteristic ratio.
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13
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Takahashi R, Miwa S, Rössel C, Fujii S, Lee JH, Schacher FH, Sakurai K. Polymersome formation induced by encapsulation of water-insoluble molecules within ABC triblock terpolymers. Polym Chem 2020. [DOI: 10.1039/d0py00426j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We found a morphological transition from spherical micelles to polymersomes induced by encapsulation of hydrophobic guest molecules.
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Affiliation(s)
- Rintaro Takahashi
- Department of Chemistry and Biochemistry
- University of Kitakyushu
- Kitakyushu
- Japan
| | - Shotaro Miwa
- Department of Chemistry and Biochemistry
- University of Kitakyushu
- Kitakyushu
- Japan
| | - Carsten Rössel
- Institute of Organic Chemistry and Macromolecular Chemistry
- Friedrich Schiller University Jena
- D-07743 Jena
- Germany
| | - Shota Fujii
- Department of Chemistry and Biochemistry
- University of Kitakyushu
- Kitakyushu
- Japan
| | - Ji Ha Lee
- Department of Chemistry and Biochemistry
- University of Kitakyushu
- Kitakyushu
- Japan
| | - Felix H. Schacher
- Institute of Organic Chemistry and Macromolecular Chemistry
- Friedrich Schiller University Jena
- D-07743 Jena
- Germany
- Jena Center for Soft Matter (JCSM)
| | - Kazuo Sakurai
- Department of Chemistry and Biochemistry
- University of Kitakyushu
- Kitakyushu
- Japan
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14
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Young CM, Chang YF, Chen YH, Chen CY, Chen HL. Ribbon Phase of Dendrimer–Surfactant Complexes. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b02214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chih-Mei Young
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yu-Fan Chang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yu-Hsiang Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- Material and Chemical Research Laboratories, Industrial Technology Research Institute, Chutung, Hsinchu 31057, Taiwan
| | - Chun-Yu Chen
- Experimental Facility Division, National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Hsin-Lung Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
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15
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Kuang C, Yusa SI, Sato T. Micellization and Phase Separation in Aqueous Solutions of Thermosensitive Block Copolymer Poly( N-isopropylacrylamide)- b-poly( N-vinyl-2-pyrrolidone) upon Heating. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00807] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chen Kuang
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Shin-ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Takahiro Sato
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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16
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Kameyama Y, Kitamura S, Sato T, Terao K. Self-Assembly of Amphiphilic Amylose Derivatives in Aqueous Media. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:6719-6726. [PMID: 31038315 DOI: 10.1021/acs.langmuir.9b00985] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Six amylose derivative (C12CMA) samples with hydrophobic dodecyl ether groups and hydrophilic sodium carboxymethyl groups were synthesized from an enzymatically synthesized amylose for which the weight-average molar mass is 50 kg mol-1 to realize amylose-based amphiphilic polymer micelles. The degree of substitution of hydrophobic (DSC12) and hydrophilic (DSCM) groups ranges between 0.076 and 0.39 and between 0.35 and 1.83, respectively. Static and dynamic light scattering, small-angle X-ray scattering (SAXS), and fluorescence measurements with pyrene as a probe were carried out for the samples in 150 mM aqueous NaCl to characterize the higher-order structure in solution. The fluorescence from pyrene showed that all six samples have hydrophobic environment, while the hydrophobicity tends to increase with rising DSC12. All six samples have high scattering intensity owing to the relatively large concentrated droplets ranging in the hydrodynamic radius from 50 to 110 nm, whereas the weight fraction of such large particles is substantially small except for the highest DSC12 sample. Most polymer chains for relatively low DSC12 of 0.076 were molecularly dispersed with a very small amount of large droplets. The dispersed chain has a slightly smaller helix pitch per residue and a more rigid main chain than those for amylose in dimethyl sulfoxide, suggesting that the amylosic main chain of C12CMA has a helical structure with dodecyl groups at least locally. On the other hand, an anisotropic shaped micelle-like structure is only found for relatively high DSC12 (0.23 and 0.39) samples, which was detected by the SAXS profile at a high scattering vector range. The micelle structure for high DSC12 samples is consistent with the high chain stiffness.
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Affiliation(s)
- Yuki Kameyama
- Department of Macromolecular Science, Graduate School of Science , Osaka University , 1-1, Machikaneyama-cho , Toyonaka , Osaka 560-0043 , Japan
| | - Shinichi Kitamura
- Graduate School of Life and Environmental Sciences , Osaka Prefecture University , 1-1, Gakuencho , Nakaku, Sakai , Osaka 599-8531 , Japan
| | - Takahiro Sato
- Department of Macromolecular Science, Graduate School of Science , Osaka University , 1-1, Machikaneyama-cho , Toyonaka , Osaka 560-0043 , Japan
| | - Ken Terao
- Department of Macromolecular Science, Graduate School of Science , Osaka University , 1-1, Machikaneyama-cho , Toyonaka , Osaka 560-0043 , Japan
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17
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Horn JM, Kapelner RA, Obermeyer AC. Macro- and Microphase Separated Protein-Polyelectrolyte Complexes: Design Parameters and Current Progress. Polymers (Basel) 2019; 11:E578. [PMID: 30960562 PMCID: PMC6523202 DOI: 10.3390/polym11040578] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/18/2019] [Accepted: 03/23/2019] [Indexed: 01/02/2023] Open
Abstract
Protein-containing polyelectrolyte complexes (PECs) are a diverse class of materials, composed of two or more oppositely charged polyelectrolytes that condense and phase separate near overall charge neutrality. Such phase-separation can take on a variety of morphologies from macrophase separated liquid condensates, to solid precipitates, to monodispersed spherical micelles. In this review, we present an overview of recent advances in protein-containing PECs, with an overall goal of defining relevant design parameters for macro- and microphase separated PECs. For both classes of PECs, the influence of protein characteristics, such as surface charge and patchiness, co-polyelectrolyte characteristics, such as charge density and structure, and overall solution characteristics, such as salt concentration and pH, are considered. After overall design features are established, potential applications in food processing, biosensing, drug delivery, and protein purification are discussed and recent characterization techniques for protein-containing PECs are highlighted.
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Affiliation(s)
- Justin M Horn
- Department of Chemical Engineering, Columbia University, New York, NY 10027, USA.
| | - Rachel A Kapelner
- Department of Chemical Engineering, Columbia University, New York, NY 10027, USA.
| | - Allie C Obermeyer
- Department of Chemical Engineering, Columbia University, New York, NY 10027, USA.
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18
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Heo TY, Kim I, Chen L, Lee E, Lee S, Choi SH. Effect of Ionic Group on the Complex Coacervate Core Micelle Structure. Polymers (Basel) 2019; 11:E455. [PMID: 30960439 PMCID: PMC6473896 DOI: 10.3390/polym11030455] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 02/22/2019] [Accepted: 02/27/2019] [Indexed: 12/16/2022] Open
Abstract
Pairs of ionic group dependence of the structure of a complex coacervate core micelle (C3M) in an aqueous solution was investigated using DLS, cryo-TEM, and SANS with a contrast matching technique and a detailed model analysis. Block copolyelectrolytes were prepared by introducing an ionic group (i.e., ammonium, guanidinium, carboxylate, and sulfonate) to poly(ethylene oxide-b-allyl glycidyl ether) (NPEO = 227 and NPAGE = 52), and C3Ms were formed by simple mixing of two oppositely-charged block copolyelectrolyte solutions with the exactly same degree of polymerization. All four C3Ms are spherical with narrow distribution of micelle dimension, and the cores are significantly swollen by water, resulting in relatively low brush density of PEO chains on the core surface. With the pair of strong polyelectrolytes, core radius and aggregation number increases, which reflects that the formation of complex coacervates are significantly sensitive to the pairs of ionic groups rather than simple charge pairing.
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Affiliation(s)
- Tae-Young Heo
- Department of Chemical Engineering, Hongik University, Seoul 04066, Korea.
| | - Inhye Kim
- Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon 34134, Korea.
| | - Liwen Chen
- Department of Chemical & Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA.
| | - Eunji Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Korea.
| | - Sangwoo Lee
- Department of Chemical & Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA.
| | - Soo-Hyung Choi
- Department of Chemical Engineering, Hongik University, Seoul 04066, Korea.
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19
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Sezonenko T, Qiu XP, Winnik FM, Sato T. Dehydration, Micellization, and Phase Separation of Thermosensitive Polyoxazoline Star Block Copolymers in Aqueous Solution. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02528] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Tetiana Sezonenko
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka 560-0043, Japan
| | - Xing-Ping Qiu
- Faculty of Pharmacy, Department of Chemistry, University of Montreal, CP 6128 Succursale Centre Ville, Montreal, Quebec Canada H3C 3J7
| | - Françoise M. Winnik
- Department of Chemistry, University of Helsinki, P.O. Box 55 (A.I. Virtasen aukio1), FI-00014 Helsinki, Finland
| | - Takahiro Sato
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka 560-0043, Japan
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20
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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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21
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SATO T, LI Y. Structural Studies of Polymer Nano-Assemblies in Solution by Scattering Techniques. KOBUNSHI RONBUNSHU 2018. [DOI: 10.1295/koron.2018-0003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Takahiro SATO
- Department of Macromolecular Science, Osaka University
| | - Yan LI
- Department of Macromolecular Science, Osaka University
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22
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Miwa S, Takahashi R, Rössel C, Matsumoto S, Fujii S, Lee JH, Schacher FH, Sakurai K. Core-Shell-Corona Micelles from a Polyether-Based Triblock Terpolymer: Investigation of the pH-Dependent Micellar Structure. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:7813-7820. [PMID: 29884021 DOI: 10.1021/acs.langmuir.8b01168] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Core-shell-corona micelles featuring a pH-responsive shell have been characterized in dilute aqueous solution at different pH values (4-8) by using dynamic light scattering (DLS), field-flow fractionation coupled with multiangle light scattering detector (FFF-MALS), steady-state fluorescence, small-angle X-ray scattering (SAXS), and cryogenic transmission electron microscopy (cryo-TEM). The micelles are formed by self-assembly of a polyether-based triblock terpolymer consisting of a hydrophobic poly( tert-butyl glycidyl ether) block (P tBGE), a pH-responsive modified poly(allyl glycidyl ether) segment (PAGECOOH), and a neutral hydrophilic poly(ethylene oxide) block (PEO). Because of the side-chain carboxylic acids in the middle block, the micellar structure and size depends on the solution pH. Hereby, we show that an increase in pH induces a decrease in the aggregation number ( Nagg). In addition, the combination of the above measurements revealed an unexpected morphological change from spherical to ellipsoidal micelles by increasing pH.
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Affiliation(s)
- Shotaro Miwa
- Department of Chemistry and Biochemistry , University of Kitakyushu , 1-1, Hibikino, Wakamatsu-ku , Kitakyushu , Fukuoka 808-0135 , Japan
| | - Rintaro Takahashi
- Department of Chemistry and Biochemistry , University of Kitakyushu , 1-1, Hibikino, Wakamatsu-ku , Kitakyushu , Fukuoka 808-0135 , Japan
| | - Carsten Rössel
- Institute of Organic Chemistry and Macromolecular Chemistry , Friedrich Schiller University Jena , Lessingstraße 8 , D-07743 Jena , Germany
- Jena Center for Soft Matter (JCSM) , Friedrich Schiller University Jena , Philosophenweg 7 , 07743 Jena , Germany
| | - Sakiko Matsumoto
- Department of Chemistry and Biochemistry , University of Kitakyushu , 1-1, Hibikino, Wakamatsu-ku , Kitakyushu , Fukuoka 808-0135 , Japan
| | - Shota Fujii
- Department of Chemistry and Biochemistry , University of Kitakyushu , 1-1, Hibikino, Wakamatsu-ku , Kitakyushu , Fukuoka 808-0135 , Japan
| | - Ji Ha Lee
- Department of Chemistry and Biochemistry , University of Kitakyushu , 1-1, Hibikino, Wakamatsu-ku , Kitakyushu , Fukuoka 808-0135 , Japan
| | - Felix H Schacher
- Institute of Organic Chemistry and Macromolecular Chemistry , Friedrich Schiller University Jena , Lessingstraße 8 , D-07743 Jena , Germany
- Jena Center for Soft Matter (JCSM) , Friedrich Schiller University Jena , Philosophenweg 7 , 07743 Jena , Germany
| | - Kazuo Sakurai
- Department of Chemistry and Biochemistry , University of Kitakyushu , 1-1, Hibikino, Wakamatsu-ku , Kitakyushu , Fukuoka 808-0135 , Japan
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23
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Takahashi R, Narayanan T, Yusa SI, Sato T. Kinetics of Morphological Transition between Cylindrical and Spherical Micelles in a Mixture of Anionic–Neutral and Cationic–Neutral Block Copolymers Studied by Time-Resolved SAXS and USAXS. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00101] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Rintaro Takahashi
- ESRF−The
European Synchrotron, 71 Avenue des Martyrs, F-38043 Grenoble, France
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku,
Kitakyushu, Fukuoka 808-0135, Japan
| | | | - Shin-ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Takahiro Sato
- Department of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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24
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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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25
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Steinschulte AA, Gelissen AP, Jung A, Brugnoni M, Caumanns T, Lotze G, Mayer J, Pergushov DV, Plamper FA. Facile Screening of Various Micellar Morphologies by Blending Miktoarm Stars and Diblock Copolymers. ACS Macro Lett 2017; 6:711-715. [PMID: 35650875 DOI: 10.1021/acsmacrolett.7b00328] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A time-saving phase-diagram screening is introduced for the self-assembly of miktoarm star polymers with different arm numbers for the insoluble part. Agreeing with theory, all conventional micellar morphologies (spherical star-like micelles, cylindrical micelles and vesicles) can be accessed by adjusting the average arm number when blending miktoarm stars with diblock copolymers (at constant arm/block lengths). Additionally, a rare clustered vesicle phase is detected. Hence, this approach permits an easy tuning of the equilibrium morphology and the size of the solvophobic domain. Such screening by scattering, ultracentrifugation, and electron microscopy techniques assists the targeted synthesis of miktoarm stars with a well-defined arm number, aimed at the morphology control of the nanostructures without blending. Specifically, we demonstrate a systematic variation of all classical micellar morphologies based on interpolyelectrolyte complexes (IPECs), consisting of a water-insoluble part formed by electrostatically coupled poly(styrenesulfonate) chains/quaternized poly(2-(dimethylamino)ethyl methacrylate) blocks, being stabilized by hydrophilic poly(ethylene oxide) blocks.
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Affiliation(s)
| | - Arjan P.H. Gelissen
- Institute
of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056 Aachen, Germany
| | - Andre Jung
- Institute
of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056 Aachen, Germany
| | - Monia Brugnoni
- Institute
of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056 Aachen, Germany
| | - Tobias Caumanns
- GFE
Central Facility for Electron Microscopy, RWTH Aachen University, Ahornstraße 55, D-52074 Aachen, Germany
| | - Gudrun Lotze
- ESRF −
The European Synchrotron Radiation Facility, ID02 - Time-Resolved
Ultra Small-Angle X-Ray Scattering, 71, Avenue des Martyrs, CS40220, 38043 Grenoble Cedex 9, France
| | - Joachim Mayer
- GFE
Central Facility for Electron Microscopy, RWTH Aachen University, Ahornstraße 55, D-52074 Aachen, Germany
| | - Dmitry V. Pergushov
- Department
of Chemistry, M.V. Lomonosov Moscow State University, Leninskie
Gory 1/3, 119991 Moscow, Russian Federation
| | - Felix A. Plamper
- Institute
of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056 Aachen, Germany
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26
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Dähling C, Lotze G, Mori H, Pergushov DV, Plamper FA. Thermoresponsive Segments Retard the Formation of Equilibrium Micellar Interpolyelectrolyte Complexes by Detouring to Various Intermediate Structures. J Phys Chem B 2017; 121:6739-6748. [PMID: 28661146 DOI: 10.1021/acs.jpcb.7b04238] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The kinetics of interpolyelectrolyte complexation involving architecturally complex (star-like) polymeric components is addressed. Specifically, the spontaneous coupling of branched cationic star-shaped miktoarm polymers, i.e., quaternized poly(ethylene oxide)114-(poly(2-(dimethylamino)ethyl methacrylate)17)4 (PEO114-(qPDMAEMA17)4), and temperature-sensitive linear anionic diblock copolymers poly(vinyl sulfonate)31-b-poly(N-isopropylacrylamide)27 (PVS31-b-PNIPAM27) and further rearrangements of the formed complexes were investigated by means of stopped-flow small-angle X-ray scattering (SAXS). Colloidally stable micelles were obtained upon mixing both polymers at a 1:1 charge molar ratio in saline solutions. The description of the time-resolved SAXS data with appropriate form factor models yielded dimensions for each micellar domain and detailed the picture of the time-dependent size changes and restructuring processes. A fast interpolyelectrolyte coupling and structural equilibration were observed when mixing occurs below the lower critical solution temperature (LCST) of PNIPAM, resulting in small spherical-like assemblies with hydrated PNIPAM coronal blocks. Above the LCST, the collapsed PNIPAM decelerates equilibration, though temperature as such is expected to boost the kinetics of complex formation: after a fast initial interpolyelectrolyte coupling, different nonequilibrium structures of spherical and worm-like shape are observed on different time scales. This study illustrates how a thermoresponsive component can modulate the influence of temperature on kinetics, particularly for rearrangement processes toward equilibrium structures during interpolyelectrolyte complexation.
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Affiliation(s)
- Claudia Dähling
- Institute of Physical Chemistry, RWTH Aachen University , Landoltweg 2, 52056 Aachen, Germany
| | - Gudrun Lotze
- ID02, Time-Resolved Ultra Small-Angle X-Ray Scattering Beamline, ESRF-European Synchrotron Radiation Facility , 71, Avenue des Martyrs, CS40220, 38043 Grenoble Cedex 9, France
| | - Hideharu Mori
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University , 4-3-16 Jonan, Yonezawa 992-8510, Japan
| | - Dmitry V Pergushov
- Department of Chemistry, M. V. 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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27
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Li Y, Sato T. Complexation of a Globular Protein, β-Lactoglobulin, with an Anionic Surfactant in Aqueous Solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:5491-5498. [PMID: 28502171 DOI: 10.1021/acs.langmuir.7b00941] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The complexation of a globular protein, β-lactoglobulin (BLG), and an anionic surfactant sodium dodecyl sulfate (SDS) in aqueous media was investigated using capillary zone electrophoresis, electrophoretic, static, and dynamic light scattering, and small-angle X-ray scattering in a considerably high protein concentration range (0.27 mM < CP < 3 mM). On increasing the molar concentration CR of the surfactant, cooperative binding of SDS to BLG starts at CR/CP ≈ 1; the BLG-SDS complex consists mainly of the BLG dimer and approximately 20 SDS molecules, where BLG takes a compact conformation similar to that of the native BLG up to CR/CP ≈ 20. At CR/CP higher than 30, the BLG dimer in the BLG-SDS complex dissociates into a unimer, but the dissociated BLG unimer still takes a compact conformation at least at 30 < CR/CP < 65.
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Affiliation(s)
- Yan Li
- Department of Macromolecular Science, Osaka University , 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Takahiro Sato
- Department of Macromolecular Science, Osaka University , 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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28
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Srivastava S, Andreev M, Levi AE, Goldfeld DJ, Mao J, Heller WT, Prabhu VM, de Pablo JJ, Tirrell MV. Gel phase formation in dilute triblock copolyelectrolyte complexes. Nat Commun 2017; 8:14131. [PMID: 28230046 PMCID: PMC5331217 DOI: 10.1038/ncomms14131] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 12/01/2016] [Indexed: 01/03/2023] Open
Abstract
Assembly of oppositely charged triblock copolyelectrolytes into phase-separated gels at low polymer concentrations (<1% by mass) has been observed in scattering experiments and molecular dynamics simulations. Here we show that in contrast to uncharged, amphiphilic block copolymers that form discrete micelles at low concentrations and enter a phase of strongly interacting micelles in a gradual manner with increasing concentration, the formation of a dilute phase of individual micelles is prevented in polyelectrolyte complexation-driven assembly of triblock copolyelectrolytes. Gel phases form and phase separate almost instantaneously on solvation of the copolymers. Furthermore, molecular models of self-assembly demonstrate the presence of oligo-chain aggregates in early stages of copolyelectrolyte assembly, at experimentally unobservable polymer concentrations. Our discoveries contribute to the fundamental understanding of the structure and pathways of complexation-driven assemblies, and raise intriguing prospects for gel formation at extraordinarily low concentrations, with applications in tissue engineering, agriculture, water purification and theranostics.
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Affiliation(s)
- Samanvaya Srivastava
- Institute for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, USA
- Institute for Molecular Engineering, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Marat Andreev
- Institute for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, USA
| | - Adam E. Levi
- Institute for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, USA
| | - David J. Goldfeld
- Institute for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, USA
| | - Jun Mao
- Institute for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, USA
- Institute for Molecular Engineering, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - William T. Heller
- Biology & Soft Matter Division, Oak Ridge National laboratory, Oak Ridge, Tennessee 37831, USA
| | - Vivek M. Prabhu
- Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - Juan J. de Pablo
- Institute for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, USA
- Institute for Molecular Engineering, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Matthew V. Tirrell
- Institute for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, USA
- Institute for Molecular Engineering, Argonne National Laboratory, Lemont, Illinois 60439, USA
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29
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Sato T, Takahashi R. Competition between the micellization and the liquid–liquid phase separation in amphiphilic block copolymer solutions. Polym J 2016. [DOI: 10.1038/pj.2016.110] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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30
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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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31
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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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32
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Geng Z, Cheng Z, Zhu Y, Jiang W. Controllable Cooperative Self-Assembly of PS-b-PAA/PS-b-P4VP Mixture by Tuning the Intercorona Interaction. J Phys Chem B 2016; 120:5527-33. [DOI: 10.1021/acs.jpcb.6b00273] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhen Geng
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Zhongkai Cheng
- School
of Life Sciences, Jilin University, Changchun 130022, People’s Republic of China
| | - Yutian Zhu
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Wei Jiang
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
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33
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Kusano T, Akutsu K, Iwase H, Yoshimura T, Shibayama M. Structural study on aggregation behavior of star-type trimeric surfactant in the presence of sodium salicylate. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.02.041] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Takahashi R, Sato T, Terao K, Yusa SI. Reversible Vesicle–Spherical Micelle Transition in a Polyion Complex Micellar System Induced by Changing the Mixing Ratio of Copolymer Components. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00308] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Rintaro Takahashi
- Department
of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Takahiro Sato
- Department
of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Ken Terao
- Department
of Macromolecular Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Shin-ichi Yusa
- Department
of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
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35
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Šindelka K, Limpouchová Z, Lísal M, Procházka K. The electrostatic co-assembly in non-stoichiometric aqueous mixtures of copolymers composed of one neutral water-soluble and one polyelectrolyte (either positively or negatively charged) block: a dissipative particle dynamics study. Phys Chem Chem Phys 2016; 18:16137-51. [DOI: 10.1039/c6cp01047d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electrostatic co-assembly in non-stoichiometric aqueous mixtures of diblock copolymers.
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Affiliation(s)
- Karel Šindelka
- Department of Physical and Macromolecular Chemistry
- Faculty of Science
- Charles University in Prague
- 128 40 Prague 2
- Czech Republic
| | - Zuzana Limpouchová
- Department of Physical and Macromolecular Chemistry
- Faculty of Science
- Charles University in Prague
- 128 40 Prague 2
- Czech Republic
| | - Martin Lísal
- Laboratory of Aerosols Chemistry and Physics
- Institute of Chemical Process Fundamentals of the CAS
- 165 02 Prague 6-Suchdol
- Czech Republic
- Department of Physics
| | - Karel Procházka
- Department of Physical and Macromolecular Chemistry
- Faculty of Science
- Charles University in Prague
- 128 40 Prague 2
- Czech Republic
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