Amphiphilic Block Copolymers: Their Structures, and Self-Assembly to Polymeric Micelles and Polymersomes as Drug Delivery Vehicles

Polymers, Journal Year: 2022, Volume and Issue: 14(21), P. 4702 - 4702

Published: Nov. 3, 2022

Self-assembly of amphiphilic block copolymers display a multiplicity nanoscale periodic patterns proposed as dominant tool for the 'bottom-up' fabrication nanomaterials with different levels ordering. The present review article focuses on recent updates to self-association in aqueous media into varied core-shell morphologies. We briefly describe copolymers, their types, microdomain formation bulk and micellization selective solvents. also discuss characteristic features nanoaggregates viz., polymer micelles (PMs) polymersomes. Amphiphilic (with variety hydrophobic blocks hydrophilic blocks; often polyethylene oxide) self-assemble water micelles/niosomes similar conventional nonionic surfactants high drug loading capacity. Double (DHBCs) made neutral block-neutral or block-charged can transform one become under influence stimulus (physical/chemical/biological), thus induced amphiphilicity self-assembly are discussed. Different kinds (viz. shell core-cross-linked, core-shell-corona, schizophrenic, crew cut, Janus) presented detail. Updates polymerization-induced (PISA) crystallization-driven (CDSA) provided. Polyion complexes (PICs) polyion complex (PICMs) Applications these copolymeric polymersomes nanocarriers delivery systems described.

Language: Английский

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Bioinspired Colloidal Photonic Composites: Fabrications and Emerging Applications

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(52)

Published: March 9, 2022

Organisms in nature have evolved unique structural colors and stimuli-responsive functions for camouflage, warning, communication over millions of years, which are essential to their survival harsh conditions. Inspired by these characteristics, colloidal photonic composites (CPCs) composed crystals embedded the polymeric matrix artificially prepared show great promise applications. This review focuses on summary building blocks, i.e., particles matrices, constructive strategies from perspective designing CPCs with robust performance specific functionality. Furthermore, state-of-the-art applications also discussed, including colorful coatings, anti-counterfeiting, regulation photoluminescence, especially field visualized sensing. Finally, current challenges potential future developments this discussed. The purpose is not only clarify design principle artificial but serve as a roadmap exploration next-generation materials.

Language: Английский

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Thermo-Responsive Poly (N-isopropyl acrylamide-b-vinylimidazole)/Pd Catalyst: Catalytic Application of Suzuki–Miyaura Coupling Reaction in Water

Catalysis Surveys from Asia, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 5, 2025

Language: Английский

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Direct-ink-write cross-linkable bottlebrush block copolymers for on-the-fly control of structural color

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(9)

Published: Feb. 20, 2024

Additive manufacturing capable of controlling and dynamically modulating structures down to the nanoscopic scale remains challenging. By marrying additive with self-assembly, we develop a UV (ultra-violet)-assisted direct ink write approach for on-the-fly modulation structural color by programming assembly kinetics through photo-cross-linking. We design photo-cross-linkable bottlebrush block copolymer solution as printing that exhibits vibrant (i.e., photonic properties) due lamellar formed post extrusion. UV-light irradiance during printing, can program printed material access broad spectrum visible light single while also creating gradients not previously possible. unveil mechanism this using combination coarse-grained simulations, rheological measurements, characterizations. Central is matching cross-linking timescale timescale, which leads kinetic trapping process evolves from blue red driven solvent evaporation. This strategy integrating chemistry out-of-equilibrium processing opens an avenue spatiotemporal control self-assembled nanostructures manufacturing.

Language: Английский

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Recent Advances in 1D Photonic Crystals: Diverse Morphologies and Distinctive Structural Colors for Multifaceted Applications

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(19)

Published: March 14, 2024

Abstract 1D photonic crystals (1DPCs) with hierarchically structured lamellar periodic frameworks that enable precise control of light‐matter interactions and contribute robust structural colors represent a groundbreaking advancement in optical materials. The microstructural characteristics the constituent material properties these materials play pivotal roles determining their performance functionality. In recent years, diverse array novel structures crafted from various emerged, showcasing tremendous potential advanced applications. This article provides an in‐depth review developments 1DPCs, emphasizing morphological designs, fabrication strategies, detail, 1DPCs featuring distinct geometrical morphologies, including lamellar, helical, fibrous, spherical, nanochained are systematically introduced, highlighting unique arising microstructures. Then, methods, involving some innovative techniques utilizing standing‐wave optics, UV dual photopolymerization, inkjet printing, succinctly summarized for constructing different by using building Subsequently, typical application examples listed discussed visual sensing, intelligent displays, anti‐counterfeiting technology, pigments, devices. Finally, passage addresses current challenges presents forward‐looking perspective on future 1DPCs.

Language: Английский

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Non-iridescent magnetite photonic crystal films and pigments with enhanced magnetic coupling effect

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150969 - 150969

Published: April 3, 2024

Language: Английский

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Dynamically mechanochromic, fluorescence-responsive, and underwater sensing cellulose nanocrystal-based conductive elastomers

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: 296, P. 139681 - 139681

Published: Jan. 10, 2025

Language: Английский

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Spray‐Assisted Fabrication of Cellulose Photonic Pigments on Superhydrophobic Surfaces

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Abstract Photonic pigments, especially those based on naturally‐derived building blocks like cellulose nanocrystals (CNCs), are emerging as a promising sustainable alternative to absorption‐based colorants. However, the proposed manufacturing methods for CNC via either grinding films or emulsion‐based production, usually require several processing steps. This limits their commercialization by increasing costs, timescales, and environmental impacts of production. Toward addressing these challenges, it is reported that photonic pigments can be produced in single process drying microdroplets aqueous suspension superhydrophobic surface. Such liquid‐repellent substrate ensures maintain near‐spherical shape, enabling radial self‐organization cholesteric phase. Upon under ambient conditions, mesophase becomes kinetically arrested, after which strong capillary forces induced water evaporation result extensive buckling microparticle. buckling, coupled with prior tuning formulation, enables adjustable color across visible spectrum. Importantly, elimination an emulsifying oil phase create much faster time (≈40 min) improved stability (e.g., polar solvents, elevated temperatures), while reduction reagents oils, surfactants) post‐processing steps solvent, heat) improves sustainability fabrication process.

Language: Английский

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Putting the Squeeze on Phase Separation

JACS Au, Journal Year: 2021, Volume and Issue: 2(1), P. 66 - 73

Published: Dec. 10, 2021

Phase separation is a ubiquitous process and finds applications in variety of biological, organic, inorganic systems. Nature has evolved the ability to control phase both regulate cellular processes make composite materials with outstanding mechanical optical properties. Striking examples latter are vibrant blue green feathers many bird species, which thought result from an exquisite size spatial correlations their phase-separated microstructures. By contrast, it much harder for material scientists arrest synthetic such high level precision at these length scales. In this Perspective, we briefly review some established methods liquid–liquid then highlight emergence promising method based on elastic polymer network. Finally, discuss upcoming challenges opportunities fabricating microstructured via mechanically controlled separation.

Language: Английский

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Optical Indicators based on Structural Colored Polymers

Advanced Science, Journal Year: 2022, Volume and Issue: 9(14)

Published: March 11, 2022

Polymer indicators are autonomous responsive materials that provide an optical signal of a specific exposure in time. This review describes the different polymer systems utilized to obtain based on structural color. Structural color originates from interaction light with periodic nanostructured which causes wavelength be reflected. reflected can used for fabricating battery-free show visible changes upon stimulus or analyte. In this review, typical response types categorized by discussed and compared. Furthermore, steps toward possible applications colored polymers outlined.

Language: Английский

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