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Hybrid Molecules Consisting of Lysine Dendrons with Several Hydrophobic Tails: A SCF Study of Self-Assembling. Int J Mol Sci 2023; 24:ijms24032078. [PMID: 36768408 PMCID: PMC9916814 DOI: 10.3390/ijms24032078] [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: 12/16/2022] [Revised: 01/14/2023] [Accepted: 01/16/2023] [Indexed: 01/21/2023] Open
Abstract
In this article, we used the numerical self-consistent field method of Scheutjens-Fleer to study the micellization of hybrid molecules consisting of one polylysine dendron with charged end groups and several linear hydrophobic tails attached to its root. The main attention was paid to spherical micelles and the determination of the range of parameters at which they can appear. A relationship has been established between the size and internal structure of the resulting spherical micelles and the length and number of hydrophobic tails, as well as the number of dendron generations. It is shown that the splitting of the same number of hydrophobic monomers from one long tail into several short tails leads to a decrease in the aggregation number and, accordingly, the number of terminal charges in micelles. At the same time, it was shown that the surface area per dendron does not depend on the number of hydrophobic monomers or tails in the hybrid molecule. The relationship between the structure of hybrid molecules and the electrostatic properties of the resulting micelles has also been studied. It is found that the charge distribution in the corona depends on the number of dendron generations G in the hybrid molecule. For a small number of generations (up to G=3), a standard double electric layer is observed. For a larger number of generations (G=4), the charges of dendrons in the corona are divided into two populations: in the first population, the charges are in the spherical layer near the boundary between the micelle core and shell, and in the second population, the charges are near the periphery of the spherical shell. As a result, a part of the counterions is localized in the wide region between them. These results are of potential interest for the use of spherical dendromicelles as nanocontainers for drug delivery.
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Shavykin OV, Leermakers FAM, Neelov IM, Darinskii AA. Self-Assembly of Lysine-Based Dendritic Surfactants Modeled by the Self-Consistent Field Approach. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:1613-1626. [PMID: 29286663 DOI: 10.1021/acs.langmuir.7b03825] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Implementing a united atom model, we apply self-consistent field theory to study structure and thermodynamic properties of spherical micelles composed of surfactants that combine an alkyl tail with a charged lysine-based dendritic headgroup. Following experiments, the focus was on dendron surfactants with varying tail length and dendron generations G0, G1, G2. The heads are subject to acetylation modification which reduces the charge and hydrophilicity. We establish a reasonable parameter set which results in semiquantitative agreement with the available experiments. The critical micellization concentration, aggregation number, and micelle size are discussed. The strongly charged dendronic surfactants micelles are stable for generation numbers G0 and G1, for progressively higher ionic strengths. Associates of G2 surfactants are very small and can only be found at extreme surfactant concentration and salt strengths. Micelles of corresponding weaker charged acetylated variants exist up to G2, tolerate significantly lower salt concentrations, but lose the spherical micelle topology for G0 at high ionic strengths.
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Affiliation(s)
- O V Shavykin
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, St. Petersburg 197101, Russia
| | - F A M Leermakers
- Physical Chemistry and Soft Matter, Wageningen University , 6703 HB Wageningen, The Netherlands
| | - I M Neelov
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, St. Petersburg 197101, Russia
- Institute of Macromolecular Compounds, Russian Academy of Sciences , Bolshoi Prospect 31, V.O., St. Petersburg 199004, Russia
| | - A A Darinskii
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, St. Petersburg 197101, Russia
- Institute of Macromolecular Compounds, Russian Academy of Sciences , Bolshoi Prospect 31, V.O., St. Petersburg 199004, Russia
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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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Tsiamantas C, Psarros C, Mays JW, Pitsikalis M. Micellization behavior of model asymmetric miktoarm star copolymers of the AA′B type, where A is polyisoprene and B is polystyrene. Polym J 2013. [DOI: 10.1038/pj.2013.54] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Tan WS, Zhu Z, Sukhishvili SA, Rubner MF, Cohen RE. Effect of Block Copolymer Architecture on the Thermally Induced Swelling of Micelle-Containing Multilayer Thin Films. Macromolecules 2011. [DOI: 10.1021/ma201397d] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Wui Siew Tan
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Zhichen Zhu
- Department of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Svetlana A. Sukhishvili
- Department of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States
| | - Michael F. Rubner
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Robert E. Cohen
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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de Cuendias A, Ibarboure E, Lecommandoux S, Cloutet E, Cramail H. Synthesis and self-assembly in water of coil-rod-coil amphiphilic block copolymers with central π-conjugated sequence. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22793] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Uhlík F, Jelínek K, Limpouchová Z, Procházka K. Stimuli-Responsive Amphiphilic Shells of Kinetically Frozen Polymeric Micelles in Aqueous Media: Monte Carlo Simulations and Comparison to Self-Consistent Field Calculations. Macromolecules 2008. [DOI: 10.1021/ma071675q] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Filip Uhlík
- Department of Physical and Macromolecular Chemistry and Laboratory of Specialty Polymers, Charles University in Prague, Faculty of Science, Albertov 6, 128 43 Praha 2, Czech Republic
| | - Karel Jelínek
- Department of Physical and Macromolecular Chemistry and Laboratory of Specialty Polymers, Charles University in Prague, Faculty of Science, Albertov 6, 128 43 Praha 2, Czech Republic
| | - Zuzana Limpouchová
- Department of Physical and Macromolecular Chemistry and Laboratory of Specialty Polymers, Charles University in Prague, Faculty of Science, Albertov 6, 128 43 Praha 2, Czech Republic
| | - Karel Procházka
- Department of Physical and Macromolecular Chemistry and Laboratory of Specialty Polymers, Charles University in Prague, Faculty of Science, Albertov 6, 128 43 Praha 2, Czech Republic
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Agut W, Brûlet A, Taton D, Lecommandoux S. Thermoresponsive micelles from Jeffamine-b-poly(L-glutamic acid) double hydrophilic block copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:11526-11533. [PMID: 17915894 DOI: 10.1021/la701482w] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Double hydrophilic block copolymers (DHBC) consisting of a Jeffamine block, a statistical copolymer based on ethylene oxide and propylene oxide units possessing a lower critical solution temperature (LCST) of 30 degrees C in water, and poly(L-glutamic acid) as a pH-responsive block were synthesized by ring-opening polymerization of gamma-benzyl-L-glutamate N-carboxyanhydride using an amino-terminated Jeffamine macroinitiator, followed by hydrolysis. This DHBC proved thermoresponsive as evidenced by dynamic light scattering and small-angle neutron scattering experiments. Spherical micelles with a Jeffamine core and a poly(L-glutamic acid) corona were formed above the LCST of Jeffamine. The size of the core of such micelles decreased with increasing temperature, with complete core dehydration being achieved at 66 degrees C. Such behavior, commonly observed for thermosensitive homopolymers forming mesoglobules, is thus demonstrated here for a DHBC that self-assembles to generate thermoresponsive micelles of high colloidal stability.
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Affiliation(s)
- Willy Agut
- Laboratoire de Chimie des Polymères Organiques, Université Bordeaux 1, ENSCPB-CNRS, 16 Avenue Pey Berland, 33607 Pessac Cedex, France
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Al-Anber ZA. The thermodynamics of micelles in surfactant solution: Lattice mean field theory. COLLOID JOURNAL 2007. [DOI: 10.1134/s1061933x07050018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Zamurovic M, Christodoulou S, Vazaios A, Iatrou E, Pitsikalis M, Hadjichristidis N. Micellization Behavior of Complex Comblike Block Copolymer Architectures. Macromolecules 2007. [DOI: 10.1021/ma0704919] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Zamurovic
- Department of Chemistry, University of Athens, Panepistimiopolis Zographou, 15771 Athens, Greece
| | - S. Christodoulou
- Department of Chemistry, University of Athens, Panepistimiopolis Zographou, 15771 Athens, Greece
| | - A. Vazaios
- Department of Chemistry, University of Athens, Panepistimiopolis Zographou, 15771 Athens, Greece
| | - E. Iatrou
- Department of Chemistry, University of Athens, Panepistimiopolis Zographou, 15771 Athens, Greece
| | - M. Pitsikalis
- Department of Chemistry, University of Athens, Panepistimiopolis Zographou, 15771 Athens, Greece
| | - N. Hadjichristidis
- Department of Chemistry, University of Athens, Panepistimiopolis Zographou, 15771 Athens, Greece
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Chécot F, Brûlet A, Oberdisse J, Gnanou Y, Mondain-Monval O, Lecommandoux S. Structure of polypeptide-based diblock copolymers in solution: stimuli-responsive vesicles and micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:4308-15. [PMID: 16032840 DOI: 10.1021/la0468500] [Citation(s) in RCA: 112] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Polypeptide-based diblock copolymers forming either well-defined self-assembled micelles or vesicles after direct dissolution in water or in dichloromethane have been studied combining light and neutron scattering with electron microscopy experiments. The size of these structures could be reversibly manipulated as a function of environmental changes such as pH and ionic strength in water. Compared to other pH-responsive self-assembled systems based on "classical" polyelectrolytes, these polypeptide-based nanostructures present the ability to give a response in highly salted media as the chain conformational ordering can be controlled. This makes these micelles and vesicles suitable for biological applications: they provide significant advantages in the control of the structure and function of supramolecular self-assemblies.
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Affiliation(s)
- Frédéric Chécot
- Laboratoire de Chimie des Polymères Organiques (LCPO-CRNS UMR5629), ENSCPB - Université Bordeaux I, 16, Av. Pey Berland, 33607 Pessac, France
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Bendejacq DD, Ponsinet V, Joanicot M. Chemically tuned amphiphilic diblock copolymers dispersed in water: from colloids to soluble macromolecules. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:1712-1718. [PMID: 15723464 DOI: 10.1021/la048983r] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We investigate by small-angle scattering the structural behavior in water of a family of asymmetric poly(styrene-stat-(acrylic acid))-block-poly(acrylic acid), i.e., P(S-stat-AA)-b-PAA, diblock copolymers. These diblocks are of constant block ratio and increasing molar fraction, phi(AA), ranging from 0 to 1, of acrylic acid in the first P(S-stat-AA) statistical block. We identify three types of structural behavior in water: (i) for phi(AA) </= 0.25, the structures found in water are out-of-equilibrium micelle-like objects, reminiscent of the macrophase separation in the solid state, with no reorganization upon dispersion; (ii) for phi(AA) >/= 0.50, the diblocks dispersions in water are at equilibrium. For high phi(AA), the diblocks are soluble in water, demonstrating that a transition from colloid-like objects to soluble macromolecules is achieved. Close to the transition, (phi(AA) approximately 0.50), the diblocks form objects interpreted as comprising a water-swollen core formed by the P(S-stat-AA) block, surrounded by a swollen brush composed of the majority PAA block, above a apparent critical micelle concentration. However, these diblocks do not behave as macrosurfactants, and their self-association behavior is rather interpreted as a microphase separation which can arise from the incompatibility between two polymer blocks P(S-stat-AA) and PAA placed in a common solvent water.
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Affiliation(s)
- Denis D Bendejacq
- Complex Fluids Laboratory, UMR 166 CNRS/Rhodia, Cranbury, New Jersey 08512, USA
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