Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159190 - 159190
Опубликована: Янв. 1, 2025
Язык: Английский
Materials Horizons, Год журнала: 2023, Номер 11(1), С. 217 - 226
Опубликована: Окт. 20, 2023
Ionic conductive cholesteric liquid crystal elastomers with dynamic color-changing and electrical sensing functions were developed through the integration of polymer ionic networks.
Язык: Английский
Процитировано
56
ACS Nano, Год журнала: 2023, Номер 17(13), С. 12829 - 12841
Опубликована: Июнь 20, 2023
Chameleon skin is naturally adaptive and can sense environmental changes transform sensing into bioelectrical optical signals by manipulating ion transduction photonic nanostructures. The increasing interest in mimicking biological skins has considerably promoted the development of advanced materials with an ionic conductivity. Herein, we report judicious design fabrication a bioinspired mechanochromic chiral nematic nanostructured film good conductivity infiltrating fluorine-rich liquids (FILs) swollen self-assembled cellulose nanocrystal (CNC) helical nanoarchitectures. Notably, introduction 2-hydroxyethyl acrylate enhances compatibility hydrophobic FILs hydrophilic CNCs. resulting FIL-CNC films exhibited excellent mechanochromism, conductivity, outstanding optical/electrical dual-signal performance when used as for real-time monitoring human motions. Owing to integration FILs, underwater stability liquid crystal nanostructures CNCs was significantly enhanced. contact/contactless modes encrypted information transmission have been achieved film. This study offer great insights advancement biomimetic multifunctional artificial emerging interactive devices, which find important applications wearable iontronics, human-machine interactions, intelligent robots.
Язык: Английский
Процитировано
52
Advanced Functional Materials, Год журнала: 2023, Номер 33(49)
Опубликована: Авг. 4, 2023
Abstract Soft ionic conductors hold great potential for soft ionotronics, such as skin, human–machine interface and luminescent device. However, most hydrogel ionogel‐based suffer from freezing, evaporation liquid leakage problems, which limit their use in complex environments. Herein, a class of liquid‐free conductive elastomers (ICEs) is reported an alternative conductor ionotronics. These ICEs offer combination desirable properties, including extraordinary stretchability (up to 1913%), toughness 1.08 MJ cm −3 ), Young's modulus 0.67 MPa), rapid fully self‐healing capability at room temperature, good conductivity 1.01 × 10 −5 S −1 ). The application these demonstrated by creating wearable sensor that can detect discriminate minimal deformations human body movements, finger or elbow joint flexion, walking, running, etc. In addition, ionotronic devices are confront mechanical breakdown, skin alternating‐current electroluminescent device reuse damage. It believed promises applications
Язык: Английский
Процитировано
49
ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(2), С. 2740 - 2750
Опубликована: Янв. 6, 2024
Fluorescent photonic crystals (FPCs) are ideal candidates for regulating dyes' fluorescence through their unique band gaps (PBGs). However, challenges, including the lack of dynamic regulation fluorescence, dye release in solvents, and instability, dramatically limit practical applications. Here, we report mechanochromic solvomechanochromic rhodamine B (RhB)-based FPCs with photoluminescence (PL) by stretching swelling, brilliant fluorescent structural colors, no RhB solvents. The force/solvent-responsive nonclose-packing structures were fabricated (1) preparing RhB-silica particles combining click chemistry cohydrolysis processes (2) self-assembling these poly(ethylene glycol) phenyl ether acrylate followed a photopolymerization. Maximal PL inhibition (37%, strain 6.8%) enhancement (150%, swelling time 8 min) gained when PBGs blue edges precisely adjusted to peak position, respectively. Compared stretching, is more efficient swelling. These characteristics benefit from rational design combination compositions, chemical bonds, nonclosely packed micro/nanostructures, solvents Moreover, have been used encrypt patterns, which display background/strain/angle/UV-dependent color contrasts, showing potential applications multilevel anticounterfeiting, optical devices, wireless sensors, etc.
Язык: Английский
Процитировано
25
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 7, 2025
Abstract Bio‐based hydrogels, valued for their flexibility, tunable mechanical properties, and biocompatibility, are promising materials wearable skins sensing devices in bionic hand control systems. Lignin, a biopolymer rich functional groups, can be modified into UV‐curable monomers, enabling the development of 3D‐printed hydrogels via photopolymerization. However, inherent rigidity lignin's aromatic rings, coupled with covalent cross‐linking between lignin other often limits hydrogel's stretchability (poor strain) compressibility. Additional challenges, including poor moisture retention freeze resistance, further hinder wider application. In this study, lignin‐based hydrogel is developed high tensile strain (≥350%), compressive (≈95%), fatigue resistance (up to 10 000 cycles under 50% strain, 200–800 95% strain), which achieved by incorporating glycerol lithium chloride facilitate dynamic hydrogen ion bonds, while accordingly reducing sites monomers. The enhanced allow effective performance at −40±1 °C. Afterward, using 3D printing technology, sensors ripple‐shaped 3 × Matrix pressure fabricated, demonstrated uniform stress distribution improved controlling complex movements, underscoring application advancing human–machine interfaces.
Язык: Английский
Процитировано
6
Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159437 - 159437
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
3
Advanced Functional Materials, Год журнала: 2023, Номер 34(6)
Опубликована: Окт. 24, 2023
Abstract Highly sensitive and wearable gas sensors are highly demanded on account of their widespread application in health environmental monitoring. However, the sensing performance conventional room‐temperature prone to fluctuate or even fail under changing humidity, temperature putting into water, thus severely limiting practical applications. Herein, a porous elastomer‐encapsulated hydrogel‐based oxygen sensor is designed with impressive various conditions, including high precision (at ppm level), wide detection range (from 5 90% O 2 ), excellent repeatability, selectivity, long‐term stability, breathability, waterproofing. The hydrophobic elastomer film prevents water molecules from intruding evaporating great extent, making device resistant humidity interference applicable underwater operation. Benefiting intrinsic stretchability both hydrogel films strong interfacial bonding, final can be stretched up 100% strain. By integrating wireless circuit module, wearable/portable system for real‐time monitoring environment demonstrated, realizing timely convenient assessment respiratory rate, tissue oxygen, ambient dissolved oxygen.
Язык: Английский
Процитировано
42
Advanced Materials, Год журнала: 2024, Номер unknown
Опубликована: Сен. 9, 2024
Abstract Developing versatile ionoelastomers, the alternatives to hydrogels and ionogels, will boost advancement of high‐performance ionotronic devices. However, meeting requirements bio‐derivation, high toughness, stretchability, autonomous self‐healing ability, ionic conductivity, reprocessing, favorable recyclability in a single ionoelastomer remains challenging endeavor. Herein, dynamic covalent supramolecular design, lipoic acid (LA)‐based (DCIE), is proposed via melt building adaptive networks with hierarchically bonding (CAN‐HDB), wherein lithium bonds aid dissociation ions integration disulfide metathesis, bonds, binary hydrogen enhances mechanical performances, capability, recyclability. Therefore, trade‐off among versatility, successfully handled. The obtained DCIE demonstrates remarkable stretchability (1011.7%), toughness (3877 kJ m −3 ), conductivity (3.94 × 10 −4 S −1 outstanding reprocessing for 3D printing, desirable Significantly, selective ion transport endows multisensory feature capable generating continuous electrical signals high‐quality sensations towards temperature, humidity, strain. Coupled straightforward methodology, abundant availability LA HPC, as well multifunction, DCIEs present new concept advanced conductors developing soft ionotronics.
Язык: Английский
Процитировано
16
Biomacromolecules, Год журнала: 2024, Номер 25(2), С. 838 - 852
Опубликована: Янв. 2, 2024
Nowadays, wearable devices derived from flexible conductive hydrogels have attracted enormous attention. Nevertheless, the utilization of in practical applications under extreme conditions remains a significant challenge. Herein, series inorganic salt-ion-enhanced (HPE-LiCl) consisting hydroxyethyl cellulose, acrylate, lithium chloride, and ethylene glycol/water binary solvent were fabricated via facile one-pot method. Apart outstanding self-adhesion, high stretchability, remarkable fatigue resistance, HPE-LiCl possessed especially excellent antifreezing long-lasting moisture performances, which could maintain satisfactory flexibility electric conductivity over extended periods time, even challenging such as extremely low temperatures (as −40 °C) 80 °C). Consequently, HPE-LiCl-based sensor timely accurately monitor various human motion signals adverse environments after long-term storage. Hence, this work presents strategy for design reliable smart strain sensors, used environments.
Язык: Английский
Процитировано
14
Advanced Functional Materials, Год журнала: 2024, Номер 34(38)
Опубликована: Май 14, 2024
Abstract Ion‐conductive elastomers have emerged as ideal candidates for ionic skin and wearable devices due to their intrinsic stretchability excellent electrical properties. Despite continuous efforts in this field, strain‐stiffening, robust yet compliant are still unattainable the limited intermolecular interactions, restricting reliability durability practical applications. Inspired by interwoven collagen fiber network synergistic non‐covalent interaction dermis, an immense ultra‐stretchable, highly tough, elastic elastomer reported introducing metal–oxygen interactions into entangled network. The also show intriguing self‐healing ability, high adhesion, environmental tolerance, contributed dynamic noncovalent interactions. prepared displays sensitive stable responses temperature strain. This work demonstrates a new design strategy fabricating high‐performance with mechanical properties, showing great prospects flexible devices.
Язык: Английский
Процитировано
13