Hollow and Vesicle Particles from Macromolecules with Amphiphilic Monomer Units

Vasilevskaya, V. V.; Govorun, E. N.

doi:10.1080/15583724.2019.1599013

Cited by 30 publications

(24 citation statements)

References 73 publications

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“…Therefore, the complex has an amphiphilic nature and resembles an amphiphilic homopolymer [27][28][29], which has both solvophilic and solvophobic groups within each monomer unit. It is known that in solution, amphiphilic homopolymers can form a number of morphologies with the solvophilic shell, including hollow vesicle-like structures [27][28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Unusual Structures of Interpolyelectrolyte Complexes: Vesicles and Perforated Vesicles

2020

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By means of computer simulation and analytical theory, we first demonstrated that the interpolyelectrolyte complexes in dilute solution can spontaneously form hollow spherical particles with thin continuous shells (vesicles) or with porous shells (perforated vesicles) if the polyions forming the complex differ in their affinity for the solvent. The solvent was considered good for the nonionic groups of one macroion and its quality was varied for the nonionic groups of the other macroion. It was found that if the electrostatic interactions are weak compared to the attraction induced by the hydrophobicity of the monomer units, the complex in poor solvent tends to form “dense core–loose shell” structures of different shapes. The strong electrostatic interactions favor the formation of the layered, the hollow, and the filled structured morphologies with the strongly segregated macroions. Vesicles with perforated walls were distinguished as the intermediate between the vesicular and the structured solid morphologies. The order parameter based on the spherical harmonics expansion was introduced to calculate the pore distribution in the perforated vesicles depending on the solvent quality. The conditions of the core–shell and hollow vesicular-like morphologies formation were determined theoretically via the calculations of their free energy. The results of the simulation and theoretical approaches are in good agreement.

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Section: Introductionmentioning

confidence: 99%

Unusual Structures of Interpolyelectrolyte Complexes: Vesicles and Perforated Vesicles

2020

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“…Besides practicality of the synthesis, the final molecular structures presented in this work represent a new family of amphiphilic homopolymers [60][61][62][63]. Polymers in which relatively low molecular weight hydrophobic and hydrophilic moieties are present at every repeating unit to attain amphiphilicity.…”

Section: Of 13mentioning

confidence: 99%

“…In the current set of polymers, the hydrophobic segment is a very small carbon chain (C1-C6) that is sparsely populated on the hydrophilic backbone due to the relatively higher molecular weight of the epoxide co-monomer. Therefore, this new polymer family cannot be considered as graft copolymers but as homopolymers in which each polymer-repeating unit contains the hydrophilic (PEG) and hydrophobic (alkyl chain) moieties [60][61][62][63].…”

Section: Thermoresponsive Behaviormentioning

confidence: 99%

Thermoresponsive Poly(ß-hydroxyl amine)s: Synthesis of a New Stimuli Responsive Amphiphilic Homopolymer Family through Amine-Epoxy ‘Click’ Polymerization

Hong

Khan

2019

Polymers

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A new synthesis of amphiphilic homopolymers is described. In this synthesis, commercially available and inexpensive primary amines and di-epoxide molecules are utilized as AA- and BB-types of monomers in an amine-epoxy ‘click’ polymerization process. This process can be carried out in water and at room temperature. It does not require a catalyst or inert conditions and forms no byproducts. Therefore, the polymer synthesis can be carried out in open-air and bench-top conditions and a post-synthesis purification step is not required. The modularity of the synthesis, on the other hand, allows for facile structural modulation and tuning of the thermally triggered aggregation process in the temperature range of 7 to 91 °C. Finally, the underlying principles can be translated from linear architectures to polymer networks (hydrogels).

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“…Beads A connect to each other and form the polymer backbone, and beads B are side pendants. This minimalist model of the amphiphilic homopolymer proposed in ref has proved its effectiveness in describing a number of complex self-organization phenomena caused by the amphiphilic structure of the monomer units. − …”

Section: Introductionmentioning

confidence: 96%

“…They can spontaneously assemble into various patterns if they are produced from different macromolecules (mixed brush) or from identical but amphiphilic macromolecules. In the latter case, one should distinguish between amphiphilic copolymers with different monomer units and amphiphilic homopolymers from identical monomers, each having groups with diverse affinities to solvent. − …”

Section: Introductionmentioning

confidence: 99%

Flowerlike Multipetal Structures of Nanoparticles Decorated by Amphiphilic Homopolymers

2021

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This paper aims to address nanoparticles decorated by amphiphilic homopolymers composed of monomeric units with significantly different groups. It is shown that the amphiphilic structure of monomer units and the resulting effective surface activity cause the grafted macromolecules to combine into thin layers, which are arranged on a spherical nanoparticle, have a different curvature, and form a multipetal flowerlike structure. The conditions for the formation of multipetal structures are outlined, and the possibility of cascades of transformations with a smooth increase in the petal number and its sharp growth is revealed. The results are presented in the form of structure diagrams obtained in a computer experiment and constructed within the framework of the original analytical theory.

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Hollow and Vesicle Particles from Macromolecules with Amphiphilic Monomer Units

Cited by 30 publications

References 73 publications

Unusual Structures of Interpolyelectrolyte Complexes: Vesicles and Perforated Vesicles

Unusual Structures of Interpolyelectrolyte Complexes: Vesicles and Perforated Vesicles

Thermoresponsive Poly(ß-hydroxyl amine)s: Synthesis of a New Stimuli Responsive Amphiphilic Homopolymer Family through Amine-Epoxy ‘Click’ Polymerization

Flowerlike Multipetal Structures of Nanoparticles Decorated by Amphiphilic Homopolymers

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