Chemical Engineering Journal, Год журнала: 2023, Номер 473, С. 145247 - 145247
Опубликована: Авг. 5, 2023
Язык: Английский
Advanced Functional Materials, Год журнала: 2023, Номер 33(36)
Опубликована: Май 17, 2023
Abstract Conductive gels are perfect for various sensor applications due to their inherent stretchability, flexibility, and electrical conductivity. However, poor environmental adaptability low fracture toughness restrict potential applications. In this study, resorcinol‐formaldehyde resin (RF) is used the first time as a rigid network compounded with flexible polyacrylic acid (PAA) successfully prepare double (DN) deep eutectic solvent gel (RF/PAA DN gel). The has high stress strength (1.04 MPa), compressive (10.63 (1.07 MJ m −3 ). addition of RF significantly improves mechanical properties gives RF/PAA certain photothermal effects, swelling resistance, flame retardancy, broadening scope use application gel. Importantly, multifunctional sensor, it can combine deformation sensing, temperature optical humidity underwater sensing into one, wide range stimuli responses excellent properties. Excellent suitability also allows its in temperatures (−20−90 °C), (55%−90% RH), underwater, fire conditions. work provides new ideas choosing networks novel strategy developing sensors performance complex environments.
Язык: Английский
Процитировано
66
Advanced Materials, Год журнала: 2023, Номер 36(6)
Опубликована: Ноя. 8, 2023
Abstract Gel materials are appealing due to their diverse applications in biomedicine, soft electronics, sensors, and actuators. Nevertheless, the existing synthetic gels often plagued by feeble network structures inherent defects associated with solvents, which compromise mechanical load‐bearing capacity cast persistent doubts about reliability. Herein, combined attractive deep eutectic solvent (DES), a stepwise‐enhanced strategy is presented fabricate ultrarobust eutectogels. It focuses on continuous modulation optimization of polymer networks through complementary annealing exchange processes, drives progressive increase both quantity mass interconnected chains at microscopic scale, hence contributing evolutionary enhancement structure. The resultant eutectogel exhibits superb properties, including record‐breaking strength (31.8 MPa), toughness (76.0 MJ m −3 ), Young's modulus (25.6 together exceptional resistance ability tear crack propagation. Moreover, this able be further programmed photolithography situ create patterned for imparting specific functionalities. Enhanced its broad applicability various DES combinations, poised serve as crucial template methodology future development robust gels.
Язык: Английский
Процитировано
60
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Янв. 30, 2024
Abstract Robust interfacial compliance is essential for long-term physiological monitoring via skin-mountable ionic materials. Unfortunately, existing epidermal skins are not compliant and durable enough to accommodate the time-varying deformations of convoluted skin surface, due an imbalance in viscosity elasticity. Here we introduce a self-compliant that consistently works at critical gel point state with almost equal elasticity over super-wide frequency range. The material designed by leveraging hierarchical hydrogen bond association, allowing continuous release polymer strands create topological entanglements as complementary crosslinks. By embodying properties rapid stress relaxation, softness, conductivity, self-healability, flaw-insensitivity, self-adhesion, water-resistance, this fosters excellent cyclically deforming substrates, facilitates acquisition high-fidelity electrophysiological signals alleviated motion artifacts. presented strategy generalizable could expand applicability more complex service conditions.
Язык: Английский
Процитировано
60
Advanced Functional Materials, Год журнала: 2023, Номер 33(49)
Опубликована: Июль 19, 2023
Abstract α‐lipoic acid (LA), a coenzyme, has proved to have excellent antioxidant and antibacterial activities; however, its intrinsic hydrophobicity metastability of polyLA remains major challenge for the application LA‐based bulk materials in biomedical field. Herein, self‐stabilized deep eutectic supramolecular polymer ( LA‐DESP) adhesive is created by one‐step heating mixture LA sodium α‐lipoate (LA‐Na) (S‐, R‐isomer, racemate) without introducing any exogenous stabilizing molecules. The underlying effect LA/LA‐Na unveiled be originated from multiple hydrogen bonds between polyLA‐Na, which not only prevent depolymerization but also lower melting point LA‐DESP near body pathological temperature. Copolymerization LA‐Na slows down dissociation thus affording sustainable release bioactive small molecules satisfactory functions. Also, exhibits fast tough adhesion diverse substrates, including wet tissues, relying on situ curing property rich carboxyl groups. explored as tissue sealant, can well replace surgical suture enhance wound healing skin incision rat model. unprecedented will provide new strategy development bioadhesives.
Язык: Английский
Процитировано
54
Advanced Functional Materials, Год журнала: 2023, Номер 33(51)
Опубликована: Сен. 8, 2023
Abstract Eutectogels are emerging as an appealing soft conductor for self‐powered sensing and the next generation of flexible human–computer interactive devices owing to their inherent mechanical elasticity high ionic conductivity. However, it still remains a challenge simultaneously achieve multi‐functional multi‐response integrations through facile sustainable approach. Herein, self‐healing, environment tolerant, intrinsically conductive, recyclable eutectogel with multiple responses is developed via one‐step solar‐initiated polymerization deep eutectic solvents (DESs) liquids (ILs). Abundant hydrogen bonds ion‐dipole interactions impart eutectogels strength (8.8 MPa), ultra‐stretchability (>1100%), strong self‐adhesion (≈12 recyclability, autonomously self‐healing ability. Furthermore, conductive versatile sensations on strain, temperature, humidity can serve wearable sensors wireless motion recognition interaction control. More importantly, eutectogel‐assembled single‐electrode triboelectric nanogenerator (TENG) exhibits extreme environment‐tolerant fast self‐healable properties that contribute maintaining excellent stable electrical outputs in wide work temperature range (approximately −40–60 °C), which appear be promising electronics environmental adaptability.
Язык: Английский
Процитировано
49
Advanced Materials, Год журнала: 2024, Номер 36(31)
Опубликована: Май 17, 2024
Abstract Electronic skin (e‐skin), a skin‐like wearable electronic device, holds great promise in the fields of telemedicine and personalized healthcare because its good flexibility, biocompatibility, conformability, sensing performance. E‐skin can monitor various health indicators human body real time over long term, including physical (exercise, respiration, blood pressure, etc.) chemical (saliva, sweat, urine, etc.). In recent years, development materials, analysis, manufacturing technologies has promoted significant e‐skin, laying foundation for application next‐generation medical devices. Herein, properties required e‐skin monitoring devices to achieve long‐term precise summarize several detectable field are discussed. Subsequently, applications integrated systems reviewed. Finally, current challenges future directions this This review is expected generate interest inspiration improvement systems.
Язык: Английский
Процитировано
41
Advanced Functional Materials, Год журнала: 2024, Номер 34(26)
Опубликована: Фев. 29, 2024
Abstract Conductive hydrogels have shown significant potential in the realm of flexible electronics; however, using water as a solvent introduces problems such low‐temperature freezing and loss. One possible solution to address these limitations is replacing with deep eutectic solvents (DES). In this study, PHEAA–gelatin–MXene (PGM) eutectogels are constructed poly( N ‐hydroxyethyl acrylamide) (PHEAA) gelatin main components, MXene nanosheets added nanofillers. The PGM exhibit exceptional tensile compressive mechanical properties, including remarkable stretchability (940%), high strength (0.5 MPa), toughness (1.39 MJ m −3 ), impressive (0.3 MPa at 80% strain). Additionally, demonstrate excellent adhesion, anti‐freezing, long‐term anti‐drying abilities. Moreover, multifunctional sensors allow sensitivity, which enables accurate real‐time stable monitoring human activities over wide temperature range. Consequently, hold great candidates fields wearable devices, personal healthcare, human–machine interfaces.
Язык: Английский
Процитировано
40
Chemical Engineering Journal, Год журнала: 2024, Номер 481, С. 149004 - 149004
Опубликована: Янв. 23, 2024
Язык: Английский
Процитировано
24
Advanced Fiber Materials, Год журнала: 2024, Номер unknown
Опубликована: Июнь 14, 2024
Язык: Английский
Процитировано
24
Advanced Healthcare Materials, Год журнала: 2024, Номер 13(17)
Опубликована: Апрель 3, 2024
Abstract Burns can cause severe damage to the skin due bacterial infection and inflammation. Although conductive hydrogels as electroactive burn‐wound dressings achieve remarkable effects on accelerating wound healing, issues such imbalance between their high conductivity mechanical properties, easy dehydration, low transparency must be addressed. Herein, a double‐network eutectogel is fabricated by integrating polymerizable deep eutectic solvents (PDESs)including acrylamide/choline chloride/glycerol (acrylamide‐polymerization crosslink) thiolated hyaluronic acid (disulfide‐bonding crosslink). The introduction of PDESs provides with (up 0.25 S·m −1 ) strength (tensile strain 59–77%) simulating those natural human skin, well satisfactory tissue adhesiveness, self‐healing ability, antibacterial properties. When combined exogenous electrical stimulation, exhibits ability reduce inflammation, stimulate cell proliferation migration, promote collagen deposition angiogenesis, facilitate remodeling. This shows great potential dressing for healing major burn wounds.
Язык: Английский
Процитировано
23