End-to-end design of wearable sensors

Nature Reviews Materials, Год журнала: 2022, Номер 7(11), С. 887 - 907

Опубликована: Июль 22, 2022

Язык: Английский

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Strong and Tough Physical Eutectogels Regulated by the Spatiotemporal Expression of Non‐Covalent Interactions

Advanced Functional Materials, Год журнала: 2022, Номер 32(41)

Опубликована: Авг. 5, 2022

Abstract Physical eutectogels are appealing materials for technological devices due to their superior ionic conductivity, thermal and electrochemical stability, non‐volatility, low cost. Nevertheless, current physical suffering from weak mechanical strength toughness. Here, taking advantage of the distribution difference polyvinyl alcohol (PVA) in water deep eutectic solvents (DESs), a simple universal solvent‐replacement approach is proposed regulate spatiotemporal expression intra/interpolymer interactions prepare strong tough eutectogels. The exchange DESs with can restrengthen weakened between PVA chains water, enabling crystallize construct uniform robust polymer network. Consequently, resultant eutectogel exhibits record‐high (20.2 MPa), toughness (62.7 MJ m –3 ), tear‐resistance (tearing energy Σ42.4 kJ –2 while possessing excellent stretchability (Σ550% strain), repairability, adhesive performance. Furthermore, this strategy proven be universally applicable various species polymers, even utilized fabricate continuous conductive fibers, demonstrating potential as engineering wearable sensors.

Язык: Английский

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Peptide-enhanced tough, resilient and adhesive eutectogels for highly reliable strain/pressure sensing under extreme conditions

Nature Communications, Год журнала: 2022, Номер 13(1)

Опубликована: Ноя. 5, 2022

Abstract Natural gels and biomimetic hydrogel materials have been able to achieve outstanding integrated mechanical properties due the gain of natural biological structures. However, nearly every structure relies on water as solvents or carriers, which limits possibility in extreme conditions, such sub-zero temperatures long-term application. Here, peptide-enhanced eutectic were synthesized by introducing α-helical “molecular spring” into deep solvent. The gel takes full advantage structure, achieving high tensile/compression, good resilience, superior fracture toughness, excellent fatigue resistance strong adhesion, while it also inherits benefits solvent solves problems volatilization freezing. This enables unprecedentedly long stable sensing human motion movement. electrical signal shows almost no drift even after 10,000 deformations for 29 hours −20 °C 80 temperature range.

Язык: Английский

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Deep eutectic solvents as a green toolbox for synthesis

Cell Reports Physical Science, Год журнала: 2022, Номер 3(4), С. 100809 - 100809

Опубликована: Март 15, 2022

Energy and environmental issues are increasingly prominent, sustainable synthetic strategies needed in response. As a class of green easily modified solvent, deep eutectic solvents (DESs) may contribute to this goal. Composed monomers from biological sources, they biodegradable with low toxicity, facilitating large-scale use. Indeed, their applications already widespread on both the laboratory industrial scales. This review focuses application DESs materials synthesis. After brief summary use organic synthesis, four for synthesis surveyed: solvothermal methods, electrodeposition, calcination, polymerization. Materials synthesized using expected find among academia industry.

Язык: Английский

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Cellulose-Based Ionic Conductor: An Emerging Material toward Sustainable Devices

Chemical Reviews, Год журнала: 2023, Номер 123(15), С. 9204 - 9264

Опубликована: Июль 7, 2023

Ionic conductors (ICs) find widespread applications across different fields, such as smart electronic, ionotronic, sensor, biomedical, and energy harvesting/storage devices, largely determine the function performance of these devices. In pursuit developing ICs required for better performing sustainable cellulose appears an attractive promising building block due to its high abundance, renewability, striking mechanical strength, other functional features. this review, we provide a comprehensive summary regarding fabricated from cellulose-derived materials in terms fundamental structural features cellulose, design fabrication techniques engineering, main properties characterization, diverse applications. Next, potential cellulose-based relieve increasing concern about electronic waste within frame circularity environmental sustainability future directions be explored advancing field are discussed. Overall, hope review can unique perspectives on application advanced thereby encourage utilization cellulosic toward

Язык: Английский

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Deep Eutectic Solvents‐Based Ionogels with Ultrafast Gelation and High Adhesion in Harsh Environments

Advanced Functional Materials, Год журнала: 2023, Номер 33(9)

Опубликована: Фев. 1, 2023

Adhesive materials have recently drawn intensive attention due to their excellent sealing ability, thereby stimulating advances in science and industrial usage. However, reported adhesives usually exhibit weak adhesion strength, require high pressure for strong bonding, display severe deterioration various harsh environments. In this work, instead of water or organic solvents, a deep eutectic solution (DES) was used as the medium photopolymerization zwitterionic polarized monomers, thus generating novel ionogel with tunable mechanical properties. Multiple hydrogen bonds electrostatic interactions between DES monomers facilitated ultrafast gelation instant bonding without any external pressure, which rarely previously. Furthermore, different environments (e.g., water, acidic basic buffers, saline solutions) onto hydrophilic glass tissues) hydrophobic polymethyl methacrylate, polystyrene, polypropylene) adherends demonstrated. Also, stretchability at extreme temperatures (-80 80 °C) indicated its widespread applications. biocompatible showed burst stomach intestine tissues prevent liquid leakage, highlighting potential an adhesive patch. This provides unprecedented opportunities fields packaging industry, marine engineering, medical adhesives, electronic assembly.

Язык: Английский

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Low‐cost and Non‐flammable Eutectic Electrolytes for Advanced Zn‐I₂ Batteries

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(39)

Опубликована: Авг. 7, 2023

As a burgeoning electrolyte system, eutectic electrolytes based on ZnCl2 /Zn(CF3 SO3 )2 /Zn(TFSI)2 have been widely proposed in advanced Zn-I2 batteries; however, safety and cost concerns significantly limit their applications. Here, we report new-type ZnSO4 -based that are both safe cost-effective. Their universality is evident various solvents of polyhydric alcohols, which multiple -OH groups not only involve Zn2+ solvation but also interact with water, resulting the high stability electrolytes. Taking propylene glycol-based hydrated as an example, it features significant advantages non-flammability low price <1/200 Zn(CF3 Moreover, its effectiveness confining shuttle effects I2 cathode side reactions Zn anodes evidenced, cells reversibility at 1 C 91.4 % capacity remaining under 20 C. After scaling up to pouch cell record mass loading 33.3 mg cm-2 , super-high-capacity retention 96.7 achieved after 500 cycles, exceeds other aqueous counterparts. This work broadens family for battery design.

Язык: Английский

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Emerging environmentally friendly bio-based nanocomposites for the efficient removal of dyes and micropollutants from wastewater by adsorption: a comprehensive review

RSC Advances, Год журнала: 2024, Номер 14(4), С. 2804 - 2834

Опубликована: Янв. 1, 2024

Water scarcity will worsen due to population growth, urbanization, and climate change.

Язык: Английский

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Evolutionary Reinforcement of Polymer Networks: A Stepwise‐Enhanced Strategy for Ultrarobust Eutectogels

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

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Environment‐Tolerant Conductive Eutectogels for Multifunctional Sensing

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

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