Responsive Colloidal Polymer Particles with Ordered Mesostructures

Deng, Renhua; Xu, Jiangping; Yi, Gi‐Ra; Kim, Jinwoong; Zhu, Jintao

doi:10.1002/adfm.202008169

Cited by 55 publications

(40 citation statements)

References 109 publications

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“…Colloidal polymer particles possessing unique shapes and internal nanostructures could be widely used for applications including catalysis, photonic crystal, biological medicine, colloidal coating, etc. [1][2][3][4][5][6][7][8] A 3D confined assembly of block copolymers (BCPs) that enables the generation of internally ordered colloidal particles with various shapes has received increasing attentions in the last two decades. [9][10][11][12][13][14][15][16][17][18] In particular, lots of efforts have been paid to an emulsion solvent evaporation-induced Based on studies combining experiments and simulations, internally ordered colloidal particles that are able to undergo morphological transformations both in shape and internal structure are presented.…”

Section: Introductionmentioning

confidence: 99%

“…Responsive morphological transformations of internally ordered colloidal polymer particles are of great interest due to their potential as smart nanomaterials for applications in sensors, detection, anti-fake, etc. [8,32,33] 3D confined thermal-or solvent-annealing enables morphological transformations of nanostructured colloidal polymer particles in a controllable manner. [34,35] Previously, we have demonstrated how interfacial interaction drives BCP segment orientation (e.g., from parallelto concentric-lamellar) within a 3D soft confined space upon solvent annealing.…”

Section: Introductionmentioning

confidence: 99%

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Transformable Colloidal Polymer Particles with Ordered Internal Structures

Deng

Zheng

Mao

et al. 2020

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Based on studies combining experiments and simulations, internally ordered colloidal particles that are able to undergo morphological transformations both in shape and internal structure are presented. The particles are prepared by emulsion solvent evaporation‐induced 3D soft confined assembly of di‐block copolymer polystyrene‐block‐poly(4‐vinylpyridine) (PS‐b‐P4VP). Control over the solvent selectivity leads to a dramatic change in shape and internal structure for particles. Pupa‐like particles of lamellar morphology are obtained when using a non‐selective solvent, while patchy particles possessing a plum pudding structure formed when the solvent is selective for PS‐block. More interestingly, 3D soft confined annealing drives order‐order morphological transformation of the particles. The morphology of reshaped particles can be well controlled by varying the solvent selectivity, annealing time, and interfacial interaction. The experimental results can be explained based on simulations. This study can offer considerable scope for the design of new stimuli‐responsive colloidal particles for potential applications in photonic crystal, drug delivery and release, sensor and smart coating, etc.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Transformable Colloidal Polymer Particles with Ordered Internal Structures

Deng

Zheng

Mao

et al. 2020

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“…17 Inspired by nature, self-assembly of BCPs in confined space is utilized to generate intriguing hierarchical superstructures which are generally unavailable either in bulk or solution. [19][20][21] Especially, colloidal particles containing helical internal microphases could be constructed under three-dimensional (3D) confined conditions. 22,23 Nevertheless, the chirality of those helical microphases is always random and their architectures cannot be well controlled.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Microphase Behaviors of Chiral Block Copolymers under Kinetic and Thermodynamic Control

et al. 2022

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The chiral superstructures in confined space are subtly affected by the complex interplays among various noncovalent interactions, details of which are still inadequately understood. Here, we report the 3D confined assembly of chiral block copolymer of polystyrene-block-poly(D-lactide) and its enantiomer in emulsion droplets, and demonstrate unprecedented successive microphase transformations from single helices to double helices with inverted helicity, and then to twisted cylinders in the constructed colloidal particles. The above hierarchical structure transformations of chiral microphases are kinetically-dependent and can further transform into thermodynamically stable achiral cylinders with saddle-shaped topology upon solvent annealing.The formation and subsequent structure transformations as well as the final degeneration of chiral architectures provide guidance to both understand the chiral evolution at different length scales within spherical confined space and fabricate biomimetic systems.

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“…[2] In artificial systems, self-assembly endows a well-defined structural order with enhanced spectroscopic, electrical, and mechanical performance. [3][4][5][6] Composed of different polymeric blocks with covalent bond junctions, block copolymers (BCPs) display interesting assembly behaviors and afford an essential bottom-up strategy to structurally ordered functional materials, calling for increasing research interests. [7,8] The thermodynamic incompatibility between blocks played a significant role in the self-assembly of BCPs.…”

Section: Introductionmentioning

confidence: 99%

Chiral transfer‐dictated self‐assembly of chiral block copolymers

Xiong

et al. 2021

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Chiral structures not only exist in nature widely, they also emerge in artificial systems, attracting myriad attentions due to their excellent mechanical, optical, electrical, and magnetic properties. Self-assembly of chiral block copolymers (BCPs*), where at least one block consists of chiral centers, represents a facile strategy to form helical/spiral/network structures with a controlled chirality. Usually, morphological chirality of BCP* assemblies was closely associated with molecular and conformational chirality of the chiral block. Generally, chiral assemblies arose from molecular chirality of BCPs*, transferring up in the assembly process and dictated the chirality at a higher hierarchical level. In contrast, notwithstanding similar assemblies could be observed from achiral BCPs under certain conditions, both left-and right-handed ones were usually observed simultaneously without a preference. Moreover, unique feature of BCPs* to access to controllable chiral assemblies affords an opportunity to prepare advanced functional materials. Herein, we dedicated a review on assembly of BCPs* into chiral assemblies in bulk/films, selective solvents, and confined spaces. The chiral transfer process in these assembly scenarios were discussed and highlighted as a key contributor to morphological chirality. Functionalities and representative applications of BCP* assemblies were also described, followed by present challenges and future prospects of BCP* self-assembly.

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Responsive Colloidal Polymer Particles with Ordered Mesostructures

Cited by 55 publications

References 109 publications

Transformable Colloidal Polymer Particles with Ordered Internal Structures

Transformable Colloidal Polymer Particles with Ordered Internal Structures

Hierarchical Microphase Behaviors of Chiral Block Copolymers under Kinetic and Thermodynamic Control

Chiral transfer‐dictated self‐assembly of chiral block copolymers

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