Effect of Hydrophilic Monomer Distribution on Self‐Assembly of a pH‐Responsive Copolymer: Spheres, Worms and Vesicles from a Single Copolymer Composition

Zhang, Junliang; Farías-Mancilla, Bárbara; Kulai, Ihor; Hoeppener, Stephanie; Lonetti, Barbara; Prévost, Sylvain; Ulbrich, Jens; Destarac, Mathias; Colombani, Olivier; Schubert, Ulrich S.; Guerrero‐Sánchez, Carlos; Harrisson, Simon

doi:10.1002/anie.202010501

Cited by 46 publications

(71 citation statements)

References 45 publications

(86 reference statements)

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“…Furthermore, for a given composition, nanoaggregates formed by block copolymers may exhibit very different properties with respect to other distributions of the same repeat units along the polymeric chain. For, instance, block copolymers of acrylic acid and butyl acrylate yield kinetically frozen micelles, whereas a gradient‐like distribution of the same monomers along the chain undergo reversible changes in size and morphology in response to changes in pH 161 . Micellar or vesicular aggregates formed by stimuli‐responsive block copolymers may respond to local environment changes by undergoing disruption, shrinkage or a switch to different morphologies.…”

Section: Random‐ Block‐ and Random‐block Copolymersmentioning

confidence: 99%

Playing construction with the monomer toy box for the synthesis of multi‐stimuli responsive copolymers by reversible deactivation radical polymerization protocols

D’Acunzo

Masci

2021

Journal of Polymer Science

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In this review article, we survey the 2016–June 2021 scientific literature on the synthesis of multi‐stimuli responsive (MSR) polymers, the main focus being on reversible deactivation radical polymerization techniques (RDRPs, also known as controlled radical polymerizations). In fact, along more than 40 years of extensive research, RDRPs have boosted the synthesis of stimuli‐responsive polymers. RDRPs are now robust, versatile, relatively user‐friendly and even interconvertible, thus allowing control over composition, sequence, and topology of polymers. Such control can afford materials with well‐defined responses to physical, chemical, and biological external stimuli. Furthermore, “click” reactions are used to combine macromolecular precursors or to introduce specific functional groups in the target structure. As a result, MSR polymers are obtained from diverse combinations of commercial or specially synthesized building blocks arranged at will into desired sequences and architectures. Thanks to this versatility, self‐assembling polymeric structures are designed either to respond to triggers and perform specific applicative tasks, or to investigate the influence of structural variables on the responsivity of polymers. The “green” trend emerging in the field of responsive polymers and RDRPs is also briefly discussed.

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Section: Random‐ Block‐ and Random‐block Copolymersmentioning

confidence: 99%

Playing construction with the monomer toy box for the synthesis of multi‐stimuli responsive copolymers by reversible deactivation radical polymerization protocols

D’Acunzo

Masci

2021

Journal of Polymer Science

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“…The distribution of hydrophobic groups and charges on the PE also plays a fundamental role in their solution behavior [22,23]. When hydrophobic and charged groups are completely segregated in block structures, formation of supra-molecular micellar aggregates will occur in solution.…”

Section: Models Of Pe In Solutionmentioning

confidence: 99%

Interactions between an Associative Amphiphilic Block Polyelectrolyte and Surfactants in Water: Effect of Charge Type on Solution Properties and Aggregation

Raffa

2021

Polymers

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The study of interactions between polyelectrolytes (PE) and surfactants is of great interest for both fundamental and applied research. These mixtures can represent, for example, models of self-assembly and molecular organization in biological systems, but they are also relevant in industrial applications. Amphiphilic block polyelectrolytes represent an interesting class of PE, but their interactions with surfactants have not been extensively explored so far, most studies being restricted to non-associating PE. In this work, interactions between an anionic amphiphilic triblock polyelectrolyte and different types of surfactants bearing respectively negative, positive and no charge, are investigated via surface tension and solution rheology measurements for the first time. It is evidenced that the surfactants have different effects on viscosity and surface tension, depending on their charge type. Micellization of the surfactant is affected by the presence of the polymer in all cases; shear viscosity of polymer solutions decreases in presence of the same charge or nonionic surfactants, while the opposite charge surfactant causes precipitation. This study highlights the importance of the charge type, and the role of the associating hydrophobic block in the PE structure, on the solution behavior of the mixtures. Moreover, a possible interaction model is proposed, based on the obtained data.

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“…[19][20][21] The distribution of hydrophobic groups and charges on the PE also plays a fundamental role in their solution behavior. [22,23] When hydrophobic and charged groups are completely segregated in block structures, formation of supra-molecular micellar aggregates will occur in solution.…”

Section: Models Of Pe In Solutionmentioning

confidence: 99%

Interactions Between an Associative Amphiphilic Block Polyelectrolyte and Surfactants in Water: Effect of Charge Type on Solution Properties and Aggregation

Raffa¹

2021

Preprint

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The study of interactions between polyelectrolytes (PE) and surfactants is of great interest for both fundamental and applied research. These mixtures can represent, for example, models of self-assembly and molecular organization in biological systems, but they are also relevant in industrial applications. Amphiphilic block polyelectrolytes represent an interesting class of PE, but their interactions with surfactants have not been extensively explored so far, most studies being restricted to non-associating PE. In this work, interactions between an anionic amphiphilic triblock polyelectrolyte and different types of surfactants bearing respectively negative, positive and no charge, are investigated via surface tension and solution rheology measurements for the first time. It is evidenced that the surfactants have different effects on viscosity and surface tension, depending on their charge type. Micellization of the surfactant is affected by the presence of the polymer in all cases; shear viscosity of polymer solutions decreases in presence of same charge or nonionic surfactants, while the opposite charge surfactant cause precipitation. This study highlights the importance of the charge type, and the role of the associating hydrophobic block in the PE structure, on the solution behavior of the mixtures. Moreover, a possible interaction model is proposed, based on the obtained data.

show abstract

Effect of Hydrophilic Monomer Distribution on Self‐Assembly of a pH‐Responsive Copolymer: Spheres, Worms and Vesicles from a Single Copolymer Composition

Cited by 46 publications

References 45 publications

Playing construction with the monomer toy box for the synthesis of multi‐stimuli responsive copolymers by reversible deactivation radical polymerization protocols

Playing construction with the monomer toy box for the synthesis of multi‐stimuli responsive copolymers by reversible deactivation radical polymerization protocols

Interactions between an Associative Amphiphilic Block Polyelectrolyte and Surfactants in Water: Effect of Charge Type on Solution Properties and Aggregation

Interactions Between an Associative Amphiphilic Block Polyelectrolyte and Surfactants in Water: Effect of Charge Type on Solution Properties and Aggregation

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