Materials Horizons, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
Bioinspired electrothermally activated polymer gel systems with synergistic fluorescence-colour/3D shape changing properties are developed for rewritable and programmable information displays.
Language: Английский
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 25, 2025
Abstract Biopolymer‐based hydrogels offer versatility in biomedical engineering due to their abundance, biocompatibility, tailorable properties, and environmental responsiveness. Realizing full potential requires understanding the molecular‐level design principles that govern macroscopic behavior. This review analyzes recent advances molecular of biopolymer‐based hydrogels, emphasizing innovative network strategies processing methods for precise control over material properties functions. How influences hydrogel behavior across multiple length scales are explored, focusing on: 1) strategies: approaches like double networks, interpenetrating supramolecular assemblies tailor mechanical responsive properties; 2) techniques: such as Hofmeister effect‐induced chain aggregating, cononsolvency‐based porous structure controlling, directional freezing‐induced alignment achieve hierarchical anisotropic structures. these influence critical strength, inner mass transportation, degradation discussed. The also covers advanced fabrication techniques leverage create complex, functional hydrogels. By elucidating relationships between architecture, methods, resulting this work aims provide a framework designing next‐generation with enhanced performance functionality various applications.
Language: Английский
Citations
7
Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: March 22, 2025
Leveraging the rich stimuli-response of polymers represents a promising direction towards optical communication/encryption. Sign language, which relies on specific geometric change for secured communication, has been widely used same purpose since ancient time. We report strategy that combines both in validated manner with hydrogel not only carries encrypted information but also hidden behavior to morph geometrically. In particular, shape morphing is programmable by controlling oriented state polymer chain thermo-responsive network. Whether positive (bending) or negative (flattening) cannot be predicted when polymerization methods are informed, revealing manner. Through deciphering coupling elastic stresses and thermo-induced deswelling stress, can perform designed diversified 4D evolution 3D geometries time as fourth dimension. Consequently, corresponding gated based these features, thereby decrypting correct permutation information. Our approach utilizes verification offers enhancing security communication ways quite different from existing strategies. Stimuli responsive hydrogels always complex required. Here, authors use
Language: Английский
Citations
3
Advanced Science, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 14, 2025
Abstract Supramolecular dynamic room temperature phosphorescence (RTP) is the focus of current research because its wide application in biological imaging and information anti‐counterfeiting. Herein, a time‐dependent supramolecular lanthanide phosphorescent 4D assembly material with multicolor luminescence including white, which composed 4‐(4‐bromophenyl)‐pyridine salt derivative (G), inorganic clay (LP)/Eu complex pyridine dicarboxylic acid (DPA) reported. Compared self‐assembled nanoparticle G, lamellar G/LP showed double emission fluorescence at 380 nm 516 over time. Within 60 min, lifetime quantum yield increases from none to 7.4 ms 27.53% respectively, achieving emission, due limitation progressive stacking LP electrostatically driven “domino effect.” Furthermore, DPA G/LP/Eu leads time‐resolved colorless purple successfully applied multi‐level logic anti‐counterfeiting efficiently antibiotic selective sensor.
Language: Английский
Citations
1
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 11, 2024
Abstract Reprogrammable shape morphing is ubiquitous in living beings and highly crucial for them to move normal situations, even survive under dangerous conditions. There increasing interest using asymmetric hydrogel structures understand mimic beings’ upon an external trigger a controlled way. However, these or heterogeneous configurations cannot be further modified once the polymer hydrogels are prepared. Therefore, it great challenge achieve reprogrammable existing hydrogels. Inspired by marine amoebae, which transform into several different morphologies according various salt concentrations, new strategy developed salting reconfigure their anisotropy toward morphing. Polyampholyte with equal stoichiometric COO − N + (CH 3 ) groups were first swollen HCl/NaCl solution. After being then transferred water, they again water uptake driven osmotic pressure, spontaneously deswollen due increase internal pH dialysis of ions leading deprotonation COOH regeneration /N electrostatic attraction. This work provides novel soft actuators open up avenue
Language: Английский
Citations
6
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: Dec. 30, 2024
Liquid crystal elastomers (LCEs) with various deformation properties based on phase transition were widely used as actuators and provided potential to fabricate functional surfaces tunable microstructure. Herein, we demonstrate a strategy dynamic micro wrinkles LCE LC transition. Stable micron-sized surface the anthracene-containing film (AnLCE) are fabricated by ultraviolet exposure induced gradient cross-linking subsequently stretching-releasing (UV-SR). The wrinkle is stabilized orientation of liquid mesogens in crosslinked top layer, while it can be erased heating due isotropic phase-transition recovered again. natures cooperated multi display modes under natural light, UV light polarized enable wrinkled AnLCE multi-mode platform. This provide path for modifying LCEs regulating images via wrinkling, which may soft sensors optics, smart windows anti-counterfeiting.
Language: Английский
Citations
4
Small, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 2, 2025
Soft robots based on actuators that can work in both on-ground and on-water situations are environmentally adaptable accomplish tasks complex environments. However, most current amphibious need external stimuli to move water require preparation processes. Herein, Ink-paper/polyethylene programmable proposed, which fabricated by rapidly brushing Chinese ink paper. The actuator bend the ground autonomously water. On one hand, shows a maximum bending curvature of 2.66 cm
Language: Английский
Citations
0
Polymer, Journal Year: 2025, Volume and Issue: unknown, P. 128062 - 128062
Published: Jan. 1, 2025
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 10, 2025
The design of synthetic hydrogels that can mimic their biological counterparts in the simultaneous production multicolor change and shape transformation response to environmental stimuli is great importance toward intelligent camouflage, encryption, actuation. Previous efforts have focused primarily on developing heterogeneous highly rely respective mechanisms achieve color changes separately, synergistically synchronizing such two variations into structurally homogenous via a single chromophore has been challenging. Here, molecular hydrogel simultaneously exhibiting synchronized deformation triggered by stimulus light reported. synchronization mechanism originates from coupled alteration upon irradiation fluorescence emission charge states spiropyran photochromophore covalently incorporated network, thus leading macroscale variation hydrogel, respectively. Following this principle, both positive negative phototropic are obtained concomitantly with but flexibly tunable illumination demonstrated ingenious application biomimetic actuation, camouflage rational combination these systems. This work represents an innovative strategy for bioinspired materials functions compound.
Language: Английский
Citations
0
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 12, 2025
Abstract Natural communication methods have influenced the creation of sophisticated artificial materials capable coherent and abundant responses to stimuli, a crucial necessity for developing applications such as dynamic encryption systems high‐density information storage. However, existing storage are limited by predictable, single‐stimulus lack capacity dynamic, continuous, programmable changes. To address this gap, bioinspired multicolor fluorescent polyurethane actuator is developed that combines color shape adaptability within single material platform. This smart mimics turgor‐driven movements Oxalis corniculata through hydrophilic/hydrophobic network enables water diffusion, hydrogen bonding, bond exchange. It responds multiple including temperature, pH, excitation wavelength, exhibiting reversible multi‐state deformations fluorescence across red, green, blue, even white light. The deformation behavior supported finite element simulations, ensuring precise control predictability. Additionally, tunable trichromatic underpins 3D 4D encoding system, demonstrating increased security. employment micro‐processing technology in fabrication micro‐hidden optical chips has been demonstrated, thus paving way underwater technologies adaptive materials.
Language: Английский
Citations
0
ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown
Published: March 25, 2025
Conventional multimode anticounterfeiting systems usually suffer high cost, complicated structures, and different optical channel interferences. In this study, we demonstrate a simple strategy named "all-in-one functionalization synergic ordering" to prepare quadruple mode patterns on photoresponsive alternating copolymer P(DPA-alt-BP) film. Herein, 9,10-diphenylanthracene (DPA) nonanoate unit serves as the multipurpose moiety with photoresponse fluorescence, performing photodimerization upon 365 nm UV irradiation. The liquid crystal mesogen biphenyl (BP) caproate units can orderly align along strain for polarized sight improve microphase separation. Upon irradiation through photomask followed by solvent annealing, film is first gradient-cross-linked then undergoes stress relief separation, giving rise ordering effect that enables fabrication of an pattern modes, i.e., wrinkled pattern, substructure surface, distinguishable fluorescent emission, This promising high-level applications provides helpful inspiration development innovative materials.
Language: Английский
Citations
0