1
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Wang F, Liu X, Yang W, Chen Y, Liu L. Responses of assembled structures of block polyelectrolytes to electrostatic interaction strength. J Chem Phys 2024; 160:144903. [PMID: 38591688 DOI: 10.1063/5.0194617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 03/19/2024] [Indexed: 04/10/2024] Open
Abstract
In this paper, the responses of assembled behaviors of block polyelectrolytes (PEs) to the strength of electrostatic interactions are studied through molecular dynamic simulations. The results show that the assembled structures closely depend on the electrostatic strength. It should be noted that PE coacervation can outweigh the nucleation of hydrophobic blocks and invert the micelle structures at strong electrostatic strengths, leading to the formation of inverted micelles of PE cores and hydrophobic coronas. In the poor solvent condition for neutral block, diverse anisotropic micelles are presented; candy-like conventional micelles of hydrophobic cores and PE patches coexist with inverted candy-like micelles of PE cores and hydrophobic patches and with Janus micelles of semi-neutral aggregate and semi-PE cluster in the presence of divalent and trivalent counterions. The formation of conventional or inverted micelle is largely determined by the type of micellar fusion, which results from the nucleation competition between electrostatic correlation and hydrophobic interaction. The merge of micelles mediated by hydrophobic attraction leads to conventional hydrophobic cores, and the fusion induced by electrostatic correlations results in PE cores micelles. At strong electrostatic strengths, the PE chains exhibit rich conformations at trivalent counterions, ranging from a fully collapsed state to a rod-like state, and parallel alignment of PE chains is found.
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Affiliation(s)
- Fujia Wang
- College of Science, Civil Aviation University of China, Tianjin 300300, China
| | - Xinyi Liu
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin 300070, China
| | - Wei Yang
- College of Science, Civil Aviation University of China, Tianjin 300300, China
| | - Yao Chen
- College of Science, Civil Aviation University of China, Tianjin 300300, China
| | - Liyan Liu
- College of Science, Civil Aviation University of China, Tianjin 300300, China
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2
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Brisson ERL, Worthington MJH, Kerai S, Müllner M. Nanoscale polymer discs, toroids and platelets: a survey of their syntheses and potential applications. Chem Soc Rev 2024; 53:1984-2021. [PMID: 38173417 DOI: 10.1039/d1cs01114f] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Polymer self-assembly has become a reliable and versatile workhorse to produce polymeric nanomaterials. With appropriate polymer design and monomer selection, polymers can assemble into shapes and morphologies beyond well-studied spherical and cylindrical micellar structures. Steadfast access to anisotropic polymer nanoparticles has meant that the fabrication and application of 2D soft matter has received increasing attention in recent years. In this review, we focus on nanoscale polymer discs, toroids, and platelets: three morphologies that are often interrelated and made from similar starting materials or common intermediates. For each morphology, we illustrate design rules, and group and discuss commonly used self-assembly strategies. We further highlight polymer compositions, fundamental principles and self-assembly conditions that enable precision in bottom-up fabrication strategies. Finally, we summarise potential applications of such nanomaterials, especially in the context of biomedical research and template chemistry and elaborate on future endeavours in this space.
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Affiliation(s)
- Emma R L Brisson
- Key Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Sydney 2006 NSW, Australia.
| | - Max J H Worthington
- Key Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Sydney 2006 NSW, Australia.
| | - Simran Kerai
- Key Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Sydney 2006 NSW, Australia.
| | - Markus Müllner
- Key Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Sydney 2006 NSW, Australia.
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Sydney 2006 NSW, Australia
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3
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Zheng C. Unexpected toroidal micelles formed from St/MMA gradient copolymers. SOFT MATTER 2022; 18:5706-5713. [PMID: 35876330 DOI: 10.1039/d2sm00619g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Toroidal micelles are of great interest and rarely observed in gradient copolymer systems. Herein, we report massive toroidal micelles formed from styrene (St)/methyl methacrylate (MMA) gradient copolymers using a common solvent mixing method followed by a cooling-heating procedure. Furthermore, we demonstrate that the obtained toroidal morphology is sensitively dependent on a heat treatment procedure. Solely spherical micelles are obtained by a common solvent mixing method. These spherical micelles could be transformed into toroidal micelles via vesicles during a cooling-heating process. When a reverse heating-cooling process is adopted, no toroidal micelles formed. Thus, these results add new members to the family of toroidal micelles and reveal pathway dominating morphologies in gradient copolymer micelles.
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Affiliation(s)
- Chao Zheng
- Department of Applied Chemistry, College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, P. R. China.
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4
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Hofman AH, Pedone M, Kamperman M. Protected Poly(3-sulfopropyl methacrylate) Copolymers: Synthesis, Stability, and Orthogonal Deprotection. ACS POLYMERS AU 2022; 2:169-180. [PMID: 35698473 PMCID: PMC9185742 DOI: 10.1021/acspolymersau.1c00044] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/06/2021] [Accepted: 12/07/2021] [Indexed: 11/28/2022]
Abstract
Because of their permanent charge, strong polyelectrolytes remain challenging to characterize, in particular, when they are combined with hydrophobic features. For this reason, they are typically prepared through a postmodification of a fully hydrophobic precursor. Unfortunately, these routes often result in an incomplete functionalization or otherwise require harsh reaction conditions, thus limiting their applicability. To overcome these problems, in this work a strategy is presented that facilitates the preparation of well-defined strong polyanions by starting from protected 3-sulfopropyl methacrylate monomers. Depending on the chemistry of the protecting group, the hydrophobic precursor could be quantitatively converted into a strong polyanion under nucleophilic, acidic, or basic conditions. As a proof of concept, orthogonally protected diblock copolymers were synthesized, selectively deprotected, and allowed to self-assemble in aqueous solution. Further conversion into a fully water-soluble polyanion was achieved by deprotecting the second block as well.
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Affiliation(s)
- Anton H. Hofman
- Polymer Science, Zernike Institute
for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Matteo Pedone
- Polymer Science, Zernike Institute
for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Marleen Kamperman
- Polymer Science, Zernike Institute
for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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5
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Kravchenko VS, Abetz V, Potemkin II. Self-assembly of gradient copolymers in a selective solvent. New structures and comparison with diblock and statistical copolymers. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124288] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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6
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Ghorbanizamani F, Moulahoum H, Zihnioglu F, Timur S. Self-assembled block copolymers in ionic liquids: Recent advances and practical applications. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.115076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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7
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Kaushik A, Paul A, Saha RK. Systematic analysis of frequency dependent differential photoacoustic cross-section data for source size estimation. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2020; 37:1895-1904. [PMID: 33362131 DOI: 10.1364/josaa.409955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 10/19/2020] [Indexed: 06/12/2023]
Abstract
A frequency dependent differential photoacoustic cross-section (DPACS) over a large frequency band (100-1000 MHz) was computed, and subsequently, morphological parameters of a photoacoustic (PA) source were quantified. The Green's function approach was utilized for calculating the DPACS for spheroidal droplets with varying aspect ratios, Chebyshev particles with different waviness and deformation parameters, and normal red blood cells and cells affected by hereditary disorders (e.g., spherocytosis, elliptocytosis, and stomatocytosis). The theoretical framework considers that PA waves propagate through an acoustically dispersive and absorbing medium and are detected by a planar detector of finite size. The frequency dependent DPACS profile was fitted with tri-axial ellipsoid, finite cylinder, and toroid form factor models to obtain size and shape information of the PA source. The tri-axial ellipsoid form factor model was found to provide better estimates of the shape parameters compared to other models for a variety of sources. The inverse problem framework may motivate developing PA-based technology to assess single-cell morphology.
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8
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Endter LJ, Risselada HJ. Where are those lipid nano rings? J Colloid Interface Sci 2020; 587:789-796. [PMID: 33246654 DOI: 10.1016/j.jcis.2020.11.038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 11/06/2020] [Accepted: 11/07/2020] [Indexed: 12/28/2022]
Abstract
Highly curved toroidal micelles with diameters as small as 100 nm have been successfully constructed by self-assembly of amphiphilic block copolymers. These structures may have potential applications in gene or drug delivery. Experimental observations suggest that toroidal micelles likely originate from spherical or disc-like micelles which are tricked into forming toroidal micelles upon external stimuli ('smart' materials). Since self-assembly of polymeric and lipid surfactants is guided by the same physical principles, we hypothesize that 'smart' lipid surfactants can be equivalently tricked into forming highly curved toroidal micelles that are tenfold smaller (≃10 nm diameter). Paradoxically, these 'nano rings' have never been observed. Using coarse-grained molecular dynamics (MD) simulations in conjunction with a state-of-the-art free energy calculation method (a string method), we illustrate how a thermo-responsive lipid surfactant is able to form toroidal micelles. These micelles originate from disc-like micelles that are spontaneously perforated upon heat shocking, thereby supporting a longstanding hypothesis on the possible origin of polymeric toroidal micelle phases observed in experiments. We illustrate that kinetically stable 'nano rings' are substantially shorter lived than their tenfold larger polymeric analogs. The estimated life-time (milliseconds) is in fact similar to the characteristic breaking time of the corresponding worm-like micelle. Finally, we resolve the characteristic finger print which 'nano rings' leave in time-resolved X-ray spectra and illustrate how the uptake of small DNA fragments may enhance their stability. Despite a shared kinetics of self-assembly, length scale dependent differences in the life-time of surfactant phases can occur when phases are kinetically rather than thermodynamically stable. This results in the apparent absence or presence of toroidal micelle phases on different length scales. Our theoretical work precisely illustrates that the universality of surfactants nevertheless remains conserved even at different length scales.
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Affiliation(s)
- Laura Josefine Endter
- Georg-August University Göttingen, Institute for Theoretical Physics, 37077 Göttingen, Germany
| | - Herre Jelger Risselada
- Georg-August University Göttingen, Institute for Theoretical Physics, 37077 Göttingen, Germany; Leiden University, Leiden Institute of Chemistry (LIC), 2311 Leiden, Netherlands.
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9
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Monitoring food structure during digestion using small-angle scattering and imaging techniques. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.02.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Hofman AH, Fokkink R, Kamperman M. A mild and quantitative route towards well-defined strong anionic/hydrophobic diblock copolymers: synthesis and aqueous self-assembly. Polym Chem 2019. [DOI: 10.1039/c9py01227c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Well-defined hydrophobic/strong anionic diblock copolymers were synthesized through a protected hydrophobic intermediate. Their self-assembly in aqueous solution was subsequently studied.
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Affiliation(s)
- Anton H. Hofman
- Physical Chemistry and Soft Matter
- Wageningen University
- 6708 WE Wageningen
- The Netherlands
- Polymer Science
| | - Remco Fokkink
- Physical Chemistry and Soft Matter
- Wageningen University
- 6708 WE Wageningen
- The Netherlands
| | - Marleen Kamperman
- Polymer Science
- Zernike Institute for Advanced Materials
- University of Groningen
- 9747 AG Groningen
- The Netherlands
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11
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Hisey B, Buddingh JV, Gillies ER, Ragogna PJ. Effect of Counterions on the Self-Assembly of Polystyrene-Polyphosphonium Block Copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:14738-14747. [PMID: 29179545 DOI: 10.1021/acs.langmuir.7b03010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The ability to manipulate block copolymers on the nanoscale has led to many scientific and technological advances. These include nanoscale ordered bulk and thin films and also solution phase components; these are promising materials for making smaller ordered electronics, selective membranes, and also biomedical applications. The ability to manipulate block copolymer material architectures on such small scales has risen from thorough investigations into the properties that affect the architectures. Polyelectrolytes are an important class of polymers that are used to make amphiphilic block copolymers. In this context the authors synthesized polystyrene-b-polyphosphonium block copolymers with different anions coordinated to the polyphosphonium block in order to study the effect of the anion on the aqueous self-assembly of the polymers. The anions play an important role in the solubility of the monomeric materials which results in differences in the self-assembly observed through dynamic light scattering and transmission electron microscopy.
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Affiliation(s)
- Benjamin Hisey
- Department of Chemistry and Centre for Advanced Materials and Biomaterials Research and ‡Department of Chemical and Biochemical Engineering, The University of Western Ontario , 1151 Richmond Street, London, ON, Canada N6A 5B7
| | - Jasmine V Buddingh
- Department of Chemistry and Centre for Advanced Materials and Biomaterials Research and ‡Department of Chemical and Biochemical Engineering, The University of Western Ontario , 1151 Richmond Street, London, ON, Canada N6A 5B7
| | - Elizabeth R Gillies
- Department of Chemistry and Centre for Advanced Materials and Biomaterials Research and ‡Department of Chemical and Biochemical Engineering, The University of Western Ontario , 1151 Richmond Street, London, ON, Canada N6A 5B7
| | - Paul J Ragogna
- Department of Chemistry and Centre for Advanced Materials and Biomaterials Research and ‡Department of Chemical and Biochemical Engineering, The University of Western Ontario , 1151 Richmond Street, London, ON, Canada N6A 5B7
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12
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Frühbeißer S, Gröhn F. Porphyrin-Polyelectrolyte Nanoassemblies: The Role of Charge and Building Block Architecture in Self-Assembly. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201600526] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sabine Frühbeißer
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials; Friedrich-Alexander-University Erlangen-Nürnberg; Egerlandstraße 3 91058 Erlangen Germany
| | - Franziska Gröhn
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials; Friedrich-Alexander-University Erlangen-Nürnberg; Egerlandstraße 3 91058 Erlangen Germany
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13
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Mariani G, Schweins R, Gröhn F. Electrostatic Self-Assembly of Dendrimer Macroions and Multivalent Dye Counterions: The Role of Solution Ionic Strength. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00565] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Giacomo Mariani
- Department
of Chemistry and Pharmacy and Interdisciplinary Center for Molecular
Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, D-91058 Erlangen, Germany
- Institut Laue-Langevin
DS/LSS, 71 Avenue des Martyrs, F-38000 Grenoble, France
| | - Ralf Schweins
- Institut Laue-Langevin
DS/LSS, 71 Avenue des Martyrs, F-38000 Grenoble, France
| | - Franziska Gröhn
- Department
of Chemistry and Pharmacy and Interdisciplinary Center for Molecular
Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, D-91058 Erlangen, Germany
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14
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Papagiannopoulos A, Meristoudi A, Pispas S, Radulescu A. Micelles from HOOC-PnBA-b-PAA-C12H15 Diblock Amphiphilic Polyelectrolytes as Protein Nanocarriers. Biomacromolecules 2016; 17:3816-3827. [DOI: 10.1021/acs.biomac.6b01408] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aristeidis Papagiannopoulos
- Theoretical
and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Anastasia Meristoudi
- Theoretical
and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Stergios Pispas
- Theoretical
and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Aurel Radulescu
- Jülich
Centre for Neutron Science JCNS Forschungszentrum Jülich GmbH, Outstation at Heinz Maier-Leibnitz Zentrum (MLZ), 1 Lichtenbergstraße, 85747 Garching, Germany
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15
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Bartenstein JE, Robertson J, Battaglia G, Briscoe WH. Stability of polymersomes prepared by size exclusion chromatography and extrusion. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.07.032] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Presa-Soto D, Carriedo GA, de la Campa R, Presa Soto A. Formation and Reversible Morphological Transition of Bicontinuous Nanospheres and Toroidal Micelles by the Self-Assembly of a Crystalline-b-Coil Diblock Copolymer. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605317] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- David Presa-Soto
- Facultad de Química, Química Orgánica e Inorgánica (IUQOEM); Universidad de Oviedo, Julián Clavería s/n; 33006 Oviedo Spain
| | - Gabino A. Carriedo
- Facultad de Química, Química Orgánica e Inorgánica (IUQOEM); Universidad de Oviedo, Julián Clavería s/n; 33006 Oviedo Spain
| | - Raquel de la Campa
- Facultad de Química, Química Orgánica e Inorgánica (IUQOEM); Universidad de Oviedo, Julián Clavería s/n; 33006 Oviedo Spain
| | - Alejandro Presa Soto
- Facultad de Química, Química Orgánica e Inorgánica (IUQOEM); Universidad de Oviedo, Julián Clavería s/n; 33006 Oviedo Spain
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17
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Presa-Soto D, Carriedo GA, de la Campa R, Presa Soto A. Formation and Reversible Morphological Transition of Bicontinuous Nanospheres and Toroidal Micelles by the Self-Assembly of a Crystalline-b-Coil Diblock Copolymer. Angew Chem Int Ed Engl 2016; 55:10102-7. [DOI: 10.1002/anie.201605317] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 06/20/2016] [Indexed: 11/09/2022]
Affiliation(s)
- David Presa-Soto
- Facultad de Química, Química Orgánica e Inorgánica (IUQOEM); Universidad de Oviedo, Julián Clavería s/n; 33006 Oviedo Spain
| | - Gabino A. Carriedo
- Facultad de Química, Química Orgánica e Inorgánica (IUQOEM); Universidad de Oviedo, Julián Clavería s/n; 33006 Oviedo Spain
| | - Raquel de la Campa
- Facultad de Química, Química Orgánica e Inorgánica (IUQOEM); Universidad de Oviedo, Julián Clavería s/n; 33006 Oviedo Spain
| | - Alejandro Presa Soto
- Facultad de Química, Química Orgánica e Inorgánica (IUQOEM); Universidad de Oviedo, Julián Clavería s/n; 33006 Oviedo Spain
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18
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Hollamby MJ, Aratsu K, Pauw BR, Rogers SE, Smith AJ, Yamauchi M, Lin X, Yagai S. Simultaneous SAXS and SANS Analysis for the Detection of Toroidal Supramolecular Polymers Composed of Noncovalent Supermacrocycles in Solution. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603370] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Martin J. Hollamby
- School of Physical and Geographical Sciences; Keele University; Keele Staffordshire ST55BG UK
| | - Keisuke Aratsu
- Graduate School of Engineering; Chiba University; 1-33 Yayoi-cho Inage-ku Chiba 263-8522 Japan
| | - Brian R. Pauw
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87 12205 Berlin Germany
| | - Sarah E. Rogers
- ISIS-STFC; Rutherford Appleton Laboratory; Chilton Oxon OX11 0QX UK
| | - Andrew J. Smith
- Diamond Light Source Ltd., Diamond House; Harwell Science and Innovation Campus; Didcot Oxfordshire OX11 0DE UK
| | - Mitsuaki Yamauchi
- Graduate School of Engineering; Chiba University; 1-33 Yayoi-cho Inage-ku Chiba 263-8522 Japan
| | - Xu Lin
- Graduate School of Engineering; Chiba University; 1-33 Yayoi-cho Inage-ku Chiba 263-8522 Japan
| | - Shiki Yagai
- Graduate School of Engineering; Chiba University; 1-33 Yayoi-cho Inage-ku Chiba 263-8522 Japan
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19
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Hollamby MJ, Aratsu K, Pauw BR, Rogers SE, Smith AJ, Yamauchi M, Lin X, Yagai S. Simultaneous SAXS and SANS Analysis for the Detection of Toroidal Supramolecular Polymers Composed of Noncovalent Supermacrocycles in Solution. Angew Chem Int Ed Engl 2016; 55:9890-3. [DOI: 10.1002/anie.201603370] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 05/13/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Martin J. Hollamby
- School of Physical and Geographical Sciences; Keele University; Keele Staffordshire ST55BG UK
| | - Keisuke Aratsu
- Graduate School of Engineering; Chiba University; 1-33 Yayoi-cho Inage-ku Chiba 263-8522 Japan
| | - Brian R. Pauw
- BAM Federal Institute for Materials Research and Testing; Unter den Eichen 87 12205 Berlin Germany
| | - Sarah E. Rogers
- ISIS-STFC; Rutherford Appleton Laboratory; Chilton Oxon OX11 0QX UK
| | - Andrew J. Smith
- Diamond Light Source Ltd., Diamond House; Harwell Science and Innovation Campus; Didcot Oxfordshire OX11 0DE UK
| | - Mitsuaki Yamauchi
- Graduate School of Engineering; Chiba University; 1-33 Yayoi-cho Inage-ku Chiba 263-8522 Japan
| | - Xu Lin
- Graduate School of Engineering; Chiba University; 1-33 Yayoi-cho Inage-ku Chiba 263-8522 Japan
| | - Shiki Yagai
- Graduate School of Engineering; Chiba University; 1-33 Yayoi-cho Inage-ku Chiba 263-8522 Japan
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20
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Schmitt J, Kjellman T, Kwaśniewski P, Meneau F, Pedersen JS, Edler KJ, Rennie AR, Alfredsson V, Impéror-Clerc M. Outset of the Morphology of Nanostructured Silica Particles during Nucleation Followed by Ultrasmall-Angle X-ray Scattering. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:5162-5172. [PMID: 27148887 DOI: 10.1021/acs.langmuir.6b00572] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Nucleation and growth of SBA-15 silica nanostructured particles with well-defined morphologies has been followed with time by small-angle X-ray scattering (SAXS) and ultrasmall-angle X-ray scattering (USAXS), using synchrotron radiation. Three different morphologies have been compared: platelets, toroids, and rods. SEM observations of the particles confirm that two key physical parameters control the morphology: the temperature and the stirring of the solution. USAXS curves demonstrate that primary particles with a defined shape are present very early in the reaction mixture, immediately after a very fast nucleation step. This nucleation step is detected at 10 min (56 °C) or 15 min (50 °C) after the addition of the silica precursor. The main finding is that the USAXS signal is different for each type of morphology, and we demonstrate that the difference is related to the shape of the particles, showing characteristic form factors for the different morphologies (platelet, toroid, and rod). Moreover, the size of the mesocrystal domains is correlated directly with the particle dimensions and shape. When stirred, aggregation between primary particles is detected even after 12 min (56 °C). The platelet morphology is promoted by constant stirring of the solution, through an oriented aggregation step between primary particles. In contrast, toroids and rods are only stabilized under static conditions. However, for toroids, aggregation is detected almost immediately after nucleation.
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Affiliation(s)
- Julien Schmitt
- Laboratoire de Physique de Solides, CNRS, Université Paris-Sud, Université Paris-Saclay , 91400 Orsay, France
| | - Tomas Kjellman
- Physical Chemistry, Lund University , P.O. Box 124, SE-221 00 Lund, Sweden
| | - Paweł Kwaśniewski
- ID2 beamline, ESRF , 71 avenue des Martyrs, F-38043 Grenoble, France
| | - Florian Meneau
- SWING beamline, Synchrotron Soleil , BP 48, F-91192 Gif-sur-Yvette, France
| | - Jan Skov Pedersen
- Department of Chemistry and iNANO Interdisciplinary Nanoscience Center, Århus University , DK-8000 Århus, Denmark
| | - Karen J Edler
- Department of Chemistry, University of Bath , Bath BA2 7AY, United Kingdom
| | - Adrian R Rennie
- Department of Physics and Astronomy, Ångström Laboratory, Uppsala University , P.O. Box 516, SE-751 21 Uppsala, Sweden
| | - Viveka Alfredsson
- Physical Chemistry, Lund University , P.O. Box 124, SE-221 00 Lund, Sweden
| | - Marianne Impéror-Clerc
- Laboratoire de Physique de Solides, CNRS, Université Paris-Sud, Université Paris-Saclay , 91400 Orsay, France
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Self-Assembly of Amphiphilic Block Copolymers in Selective Solvents. FLUORESCENCE STUDIES OF POLYMER CONTAINING SYSTEMS 2016. [DOI: 10.1007/978-3-319-26788-3_2] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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22
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Raffa P, Wever DAZ, Picchioni F, Broekhuis AA. Polymeric Surfactants: Synthesis, Properties, and Links to Applications. Chem Rev 2015; 115:8504-63. [PMID: 26182291 DOI: 10.1021/cr500129h] [Citation(s) in RCA: 184] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Patrizio Raffa
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands.,Dutch Polymer Institute DPI , P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Diego Armando Zakarias Wever
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands.,Dutch Polymer Institute DPI , P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Francesco Picchioni
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Antonius A Broekhuis
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
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23
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Mu D, Li JQ, Feng SY. Morphology of lipid-like structured weak polyelectrolyte poly(ethylene oxide)-block-poly(methyl methacrylate) diblock copolymers induced by confinements. SOFT MATTER 2015; 11:4356-4365. [PMID: 25875915 DOI: 10.1039/c5sm00438a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Combined with quantum calculations and mesoscale simulations, the self-assembly of twelve lipid-structured PEO-b-PMMA copolymers (BCPs) with six types of molecular topologies was investigated. The BCPs with MMA species as the connecting center of the other arms present ample mesoscale structures, such as micelles and lamellae or curved lamellar phases, and even macrophase separation occurs for the long-chained BCPs. The excluded volume effect of confinements helps form vesicle-like structures, which proved to be a possible method of confinement to regulate phase morphologies or segment distributions and, ultimately, the properties of materials. An analysis of the phase formation process of short-chained BCP with two hydrophilic EO segments and one hydrophobic MMA segment indicated that four stages were found in both neutral and non-neutral wall confinement, all of which present a hexagonal columnar phase. Surprisingly, when the repulsion effect of the wall to the EO segment is greater than that of the MMA segment, such BCP self assembles into a crossed columnar phase, and the intersection angle of the orientation of these two sets of cylinder arrays is 75 degrees, which can be used to produce heterogeneous nanotube arrays. For the short-chained BCP with four arms joined at MMA species and EO segments in the outer region, we found a novel method of exchanging the repulsive preference of the wall to the EO or MMA species that can control the adsorption or desorption of the lamellar phase with the interval of EO or MMA segments.
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Affiliation(s)
- Dan Mu
- Institute of Research on the Structure and Property of Matter, Zaozhuang University, Zaozhuang, 277160, China.
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Mu D, Li JQ, Feng SY. Mesoscopic simulation of the self-assembly of the weak polyelectrolyte poly(ethylene oxide)-block-poly(methyl methacrylate) diblock copolymers. SOFT MATTER 2015; 11:4366-4374. [PMID: 25871011 DOI: 10.1039/c5sm00346f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We designed twelve types of weak polyelectrolytes (i.e., PEO-b-PMMA copolymers (BCP) in multi-arm structures, where six include EO blocks as joint points and the other six have MMA blocks as joint points). All of the BCPs with EO as the joint points form disordered phases with the exception of long-chained and four-armed BCP. The main mesophases of all of the BCPs with MMA as joint points are micelle-like and bicontinuous phases. In particular, the short-chained BCP with four-arms and EO segments outside form a new phase type (i.e., crossed lamellar phase). Using MesoDyn, we provide a comprehensive representation of the micelle and crossed lamellar phase formation mechanisms based on both thermodynamic and dynamic analyses. A shear force on a micelle-like phase could promote a hexagonal columnar phase, which is a good technique for generating an ordered arrangement of nanotube arrays. Blending homopolymers with the same constituents could promote uniformity of the micelle size and decrease the polydispersity, especially for blends with a high BCP concentration, which may provide a new approach for regulating the properties of materials.
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Affiliation(s)
- Dan Mu
- Institute of Research on the Structure and Property of Matter, Zaozhuang University, Zaozhuang, 277160, China.
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25
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McKenzie BE, Friedrich H, Wirix MJM, de Visser JF, Monaghan OR, Bomans PHH, Nudelman F, Holder SJ, Sommerdijk NAJM. Controlling internal pore sizes in bicontinuous polymeric nanospheres. Angew Chem Int Ed Engl 2015; 54:2457-61. [PMID: 25640026 PMCID: PMC4471611 DOI: 10.1002/anie.201408811] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 11/11/2014] [Indexed: 11/21/2022]
Abstract
Complex polymeric nanospheres were formed in water from comb-like amphiphilic block copolymers. Their internal morphology was determined by three-dimensional cryo-electron tomographic analysis. Varying the polymer molecular weight (MW) and the hydrophilic block weight content allowed for fine control over the internal structure. Construction of a partial phase diagram allowed us to determine the criteria for the formation of bicontinuous polymer nanosphere (BPN), namely for copolymers with MW of up to 17 kDa and hydrophilic weight fractions of ≤0.25; and varying the organic solvent to water ratio used in their preparation allowed for control over nanosphere diameters from 70 to 460 nm. Significantly, altering the block copolymer hydrophilic-hydrophobic balance enabled control of the internal pore diameter of the BPNs from 10 to 19 nm.
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Affiliation(s)
- Beulah E McKenzie
- Laboratory of Materials and Interface Chemistry and Soft Matter Cryo-TEM Research Unit, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven (The Netherlands); Functional Materials Group, School of Physical Sciences, University of Kent, Canterbury, Kent CT2 7NH (UK)
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26
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McKenzie BE, Friedrich H, Wirix MJM, de Visser JF, Monaghan OR, Bomans PHH, Nudelman F, Holder SJ, Sommerdijk NAJM. Controlling Internal Pore Sizes in Bicontinuous Polymeric Nanospheres. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201408811] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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27
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Cong Y, Zhou Q, Chen B, Fang J, Fu J. Morphological transformations of nonequilibrium assemblies of amphiphilic diblock copolymer. COLLOID JOURNAL 2014. [DOI: 10.1134/s1061933x14060064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Rharbi Y, Karrouch M, Richardson P. Fusion and fission inhibited by the same mechanism in electrostatically charged surfactant micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:7947-7952. [PMID: 24866814 DOI: 10.1021/la501465v] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This paper revises the general idea about the role of intermicellar and intramiceller interactions in inhibiting fusion of self-assembled surfactant micelles. Fusion and fission of micelles are usually thought to be limited by different mechanisms. While fission is accepted to be controlled by surface instabilities (intramicellar interactions), fusion is commonly thought to be rate limited by the barrier to the close approach between two micelles due to the steric or Coulombic repulsions (intramicellar interactions). Here we describe the role of electrostatic repulsions in inhibiting fusion and fission kinetics in self-assembled micelles. We use stopped flow-fluorescence technique with hydrophobic pyrene to quantify fusion and fission in ionic/nonionic mixed micelles (Triton X-100/SDS). We show that the fusion and fission rates decrease with the same tendency with increasing the fraction of the ionic charges, while their ratio remains constant. Our results are interpreted to mean that, in slightly charged micelles, fusion shares the same limiting step with fission, which most likely involves surface instabilities and intramiceller interactions.
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Affiliation(s)
- Yahya Rharbi
- Laboratoire de Rhéologie et procédés, UJF/INPG/CNRS , BP 53, Domaine universitaire, 38041 Grenoble, France
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Klitzing R, Tieke B. Polyelectrolyte Membranes. POLYELECTROLYTES WITH DEFINED MOLECULAR ARCHITECTURE I 2012. [DOI: 10.1007/b11270] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Thünemann AF, Müller M, Dautzenberg H, Joanny JF, Löwen H. Polyelectrolyte Complexes. ADVANCES IN POLYMER SCIENCE 2012. [DOI: 10.1007/b11350] [Citation(s) in RCA: 306] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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33
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Ghosh A, Yusa SI, Matsuoka H, Saruwatari Y. Non-surface activity and micellization behavior of cationic amphiphilic block copolymer synthesized by reversible addition-fragmentation chain transfer process. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:9237-9244. [PMID: 21667918 DOI: 10.1021/la201550a] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Cationic amphiphilic diblock copolymers of poly(n-butylacrylate)-b-poly(3-(methacryloylamino)propyl)trimethylammonium chloride) (PBA-b-PMAPTAC) with various hydrophobic and hydrophilic chain lengths were synthesized by a reversible addition-fragmentation chain transfer (RAFT) process. Their molecular characteristics such as surface activity/nonactivity were investigated by surface tension measurements and foam formation observation. Their micelle formation behavior and micelle structure were investigated by fluorescence probe technique, static and dynamic light scattering (SLS and DLS), etc., as a function of hydrophilic and hydrophobic chain lengths. The block copolymers were found to be non-surface active because the surface tension of the aqueous solutions did not change with increasing polymer concentration. Critical micelle concentration (cmc) of the polymers could be determined by fluorescence and SLS measurements, which means that these polymers form micelles in bulk solution, although they were non-surface active. Above the cmc, the large blue shift of the emission maximum of N-phenyl-1-naphthylamine (NPN) probe and the low micropolarity value of the pyrene probe in polymer solution indicate the core of the micelle is nonpolar in nature. Also, the high value of the relative intensity of the NPN probe and the fluorescence anisotropy of the 1,6-diphenyl-1,3,5-hexatriene (DPH) probe indicated that the core of the micelle is highly viscous in nature. DLS was used to measure the average hydrodynamic radii and size distribution of the copolymer micelles. The copolymer with the longest PBA block had the poorest water solubility and consequently formed micelles with larger size while having a lower cmc. The "non-surface activity" was confirmed for cationic amphiphilic diblock copolymers in addition to anionic ones studied previously, indicating the universality of non-surface activity nature.
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Affiliation(s)
- Arjun Ghosh
- Department of Polymer Chemistry, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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Willerich I, Schindler T, Gröhn F. Effect of Polyelectrolyte Architecture and Size on Macroion–Dye Assemblies. J Phys Chem B 2011; 115:9710-9. [DOI: 10.1021/jp204368t] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Immanuel Willerich
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
| | - Torben Schindler
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
| | - Franziska Gröhn
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
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35
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Ruthard C, Maskos M, Kolb U, Gröhn F. Polystyrene sulfonate-porphyrin assemblies: influence of polyelectrolyte and porphyrin structure. J Phys Chem B 2011; 115:5716-29. [PMID: 21491935 DOI: 10.1021/jp1078357] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In this study, electrostatic self-assembly of different polystyrene sulfonates and a set of tetravalent cationic porphyrins is investigated. It is shown that association of linear polystyrene sulfonates of different molar masses yields finite size nanoscale assemblies that are stable in aqueous solution. Aggregates are compared to the ones of cylindrical brushes, revealing that both form assemblies in the 100 nm range with the charge ratio (molar ratio of porphyrin charges to polyelectrolyte charges) being determining, while the morphology of the resulting network-like assemblies is different for both polyelectrolyte architectures. For the smallest 8k polystyrene sulfonate, in addition, stoichiometric conditions differ. The influence of the molecular porphyrin structure was investigated by comparing meso-tetrakis(4-(trimethyl-ammonium)phenyl)porphyrin (TAPP) with its Cu(II) and Zn(II) loaded analogues and meso-tetrakis(4-N-methylpyridinium)porphyrin (TMPyP), revealing differences in stacking tendency and geometry. Additionally, the TMPyP accumulates more in the inside of the brush than the other porphyrins, likely due to the different position of its charged groups. The supramolecular nanostructures formed were characterized by UV-vis spectroscopy, light scattering, atomic force microscopy, cryo transmission electron microscopy, and small-angle neutron scattering. Results may build a valuable basis for the use of polyelectrolyte-porphyrin assemblies in medicine, catalysis, or energy conversion.
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Affiliation(s)
- Christian Ruthard
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
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Borisov OV, Zhulina EB, Leermakers FAM, Müller AHE. Self-Assembled Structures of Amphiphilic Ionic Block Copolymers: Theory, Self-Consistent Field Modeling and Experiment. SELF ORGANIZED NANOSTRUCTURES OF AMPHIPHILIC BLOCK COPOLYMERS I 2011. [DOI: 10.1007/12_2011_114] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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39
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Lim YB, Lee E, Lee M. Toroidal Nanostructures from Self-Assembly of Block Copolypeptides Based on Poly(L
-Arginine) and β-Sheet Peptide. Macromol Rapid Commun 2010; 32:191-6. [DOI: 10.1002/marc.201000512] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2010] [Indexed: 11/12/2022]
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40
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Willerich I, Li Y, Gröhn F. Influencing Particle Size and Stability of Ionic Dendrimer−Dye Assemblies. J Phys Chem B 2010; 114:15466-76. [DOI: 10.1021/jp107358q] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Immanuel Willerich
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-University Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany and Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Yi Li
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-University Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany and Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Franziska Gröhn
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-University Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany and Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
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Zhu G, Wang F, Ding Z, Liu Y, Gao Q. Aggregation Behavior of Poly(ethylene glycol)- block-poly (γ-benzyl L-glutamate)- graft-poly(ethylene glycol) Copolymer and its Blends with Poly(γ-benzyl L-glutamate) Homopolymer in Mixed Solvents. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2010. [DOI: 10.1080/10601325.2010.507991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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42
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Uchman M, Cígler P, Grüner B, Procházka K, Matějíček P. Micelle-like nanoparticles of block copolymer poly(ethylene oxide)-block-poly(methacrylic acid) incorporating fluorescently substituted metallacarboranes designed as HIV protease inhibitor interaction probes. J Colloid Interface Sci 2010; 348:129-36. [DOI: 10.1016/j.jcis.2010.04.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2010] [Revised: 04/13/2010] [Accepted: 04/15/2010] [Indexed: 10/19/2022]
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43
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Victorov AI, Plotnikov NV, Hong PD. Molecular Thermodynamic Modeling of the Morphology Transitions in a Solution of a Diblock Copolymer Containing a Weak Polyelectrolyte Chain. J Phys Chem B 2010; 114:8846-60. [DOI: 10.1021/jp100987h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexey I. Victorov
- Department of Chemistry, St. Petersburg State University, Universitetsky Prosp., 26, 198504, St. Petersburg, Russia, Department of Chemistry, University of Southern California, 3620 McClintock Avenue, 418 SGM, Los Angeles, California 90089, and Department of Polymer Engineering, National Taiwan University of Science and Technology 43, Section 4, Keelung Road, Taipei 10607, Taiwan
| | - Nikolay V. Plotnikov
- Department of Chemistry, St. Petersburg State University, Universitetsky Prosp., 26, 198504, St. Petersburg, Russia, Department of Chemistry, University of Southern California, 3620 McClintock Avenue, 418 SGM, Los Angeles, California 90089, and Department of Polymer Engineering, National Taiwan University of Science and Technology 43, Section 4, Keelung Road, Taipei 10607, Taiwan
| | - Po-Da Hong
- Department of Chemistry, St. Petersburg State University, Universitetsky Prosp., 26, 198504, St. Petersburg, Russia, Department of Chemistry, University of Southern California, 3620 McClintock Avenue, 418 SGM, Los Angeles, California 90089, and Department of Polymer Engineering, National Taiwan University of Science and Technology 43, Section 4, Keelung Road, Taipei 10607, Taiwan
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von Klitzing R, Thormann E, Nylander T, Langevin D, Stubenrauch C. Confinement of linear polymers, surfactants, and particles between interfaces. Adv Colloid Interface Sci 2010; 155:19-31. [PMID: 20206329 DOI: 10.1016/j.cis.2010.02.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2009] [Revised: 02/02/2010] [Accepted: 02/03/2010] [Indexed: 11/27/2022]
Abstract
The review addresses the effect of geometrical confinement on the structure formation of colloidal dispersions like particle suspensions, (non)micellar surfactant solutions, polyelectrolyte solutions and mixed dispersions. The dispersions are entrapped either between two fluid interfaces (foam film) in a Thin Film Pressure Balance (TFPB) or between two solid interfaces in a Colloidal Probe Atomic Force Microscope (Colloidal Probe AFM) or a Surface Force Apparatus (SFA). The oscillating concentration profile in front of the surface leads to an oscillating force during film thinning. It is shown that the characteristic lengths like the distance between particles, the distance between micelles, or the mesh size of the polymer network remain the same during the confining process. The influence of different parameters like ionic strength, molecular structure, and the properties of the outer surfaces on the structure formation are reported. The confinement of mixed dispersions might lead to phase separation and capillary condensation, which in turn causes a pronounced attraction between the two opposing film surfaces.
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Massignani M, Lomas H, Battaglia G. Polymersomes: A Synthetic Biological Approach to Encapsulation and Delivery. MODERN TECHNIQUES FOR NANO- AND MICROREACTORS/-REACTIONS 2010. [DOI: 10.1007/12_2009_40] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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46
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Conformations and Solution Properties of Star-Branched Polyelectrolytes. SELF ORGANIZED NANOSTRUCTURES OF AMPHIPHILIC BLOCK COPOLYMERS I 2010. [DOI: 10.1007/12_2010_104] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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47
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Yildiz ÜH, Koynov K, Gröhn F. Fluorescent Nanoparticles through Self-Assembly of Linear Ionenes and Pyrenetetrasulfonate. MACROMOL CHEM PHYS 2009. [DOI: 10.1002/macp.200900224] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Huang H, Chung B, Jung J, Park HW, Chang T. Toroidal Micelles of Uniform Size from Diblock Copolymers. Angew Chem Int Ed Engl 2009; 48:4594-7. [DOI: 10.1002/anie.200900533] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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49
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Huang H, Chung B, Jung J, Park HW, Chang T. Toroidal Micelles of Uniform Size from Diblock Copolymers. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200900533] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Fu J, Kim DH, Knoll W. Aqueous Networks and Toroids of Amphiphilic Block Copolymer with Non-ionic Surfactants. Chemphyschem 2009; 10:1190-4. [DOI: 10.1002/cphc.200900081] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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