An Ultra‐Thin Stretchable Electrode Based on High‐Resilient Polyurethane Crosslinked with La3+‐Complexes DOI
Qisheng Huang, Rui Yang, Zhaorong Yang

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 2, 2025

Stretchable electronic skins with multifunctional sensing capabilities are of great importance in smart healthcare, wearable display electronics, intelligent robots, and human-machine interfaces. Thermoplastic elastomers play a pivotal role as soft substrate the field stretchable electronics. However, dynamic interactions common thermoplastic often result high hysteresis fatigue damage, limiting their performance durability. In this study, highly resilient fatigue-resistant elastomer is developed by employing La3+-complexes crosslinkers. The woven structure formed between prepolymer ligands lanthanum (III) metal ions establishes stable coordination introduces additional entanglements around Furthermore, self-assembles into hierarchical nanoarchitectures, which serve physical crosslinks, significantly enhancing mechanical strength. As result, new exhibit exceptional strength (Young's modulus ≈3.47 MPa; maximum stress ≈16.52 MPa), resilience (residual strain during cyclic stretching at 100% ≈8%), resistance (strength retention rate ≈90% after 2000 cycles stretching), thermomechanical properties (creep ≈14.43% residual ≈0.22% 80 °C 0.1 MPa). Leveraging high-performance polyurethane elastomer, ultra-thin flexible electrodes fabricated, can achieve long-term monitoring physiological signals human body.

Language: Английский

Salt-welding strategy for the design of repairable impact-resistant and wear-resistant hydrogels DOI Creative Commons

Jiangpeng Jia,

Shan Lu,

Shurui Sun

et al.

Science Advances, Journal Year: 2025, Volume and Issue: 11(4)

Published: Jan. 24, 2025

Self-healing hydrogels can autonomously repair damage, enhancing their performance stability and broadening applications as soft devices. Although the incorporation of dynamic interactions enhances self-healing capabilities, it simultaneously weakens hydrogels’ strength. External stimuli such heating, while accelerating healing process, may also lead to dehydration. Developing a stable strategy that combines rapid high mechanical strength is challenging. Here, we introduce “salt-welding” for high-strength with room temperature self-healing. This achieved through borate ester bonds in salt-responsive poly(methacrylamide) hydrogel. The process involves “salt-fusion” convert fractures into viscous liquid swift healing, followed by “salt-concretion” toughen achieve posthealing 23 megapascals 95 minutes at temperature, near 100% efficiency. Leveraging tunable rate, hydrogel be tailored reparable wear-resistant material damping device.

Language: Английский

Citations

1
High-entropy thermal-stiffening hydrogels with fast switching dynamics DOI Creative Commons
Li Li,

Baohu Wu,

Shengtong Sun

et al.

National Science Review, Journal Year: 2025, Volume and Issue: 12(4)

Published: Feb. 27, 2025

ABSTRACT Thermal-stiffening hydrogels exhibit a dramatic soft-to-stiff transition upon heating, making them ideal candidates for temperature-triggered self-protection and shape memory applications. However, their practical use is still hampered by slow recovery process (generally >30 min) during cooling, attributed to sluggish mass diffusion delayed phase dissolution. Herein, we present high-entropy separation design significantly accelerate the dynamics of these materials. We demonstrate this concept using thermal-stiffening poly(calcium acrylate)-based copolymer hydrogel incorporating hydrophilic units. Mechanistically, units disrupt dense packing clusters, creating topological structure with low energy barrier rapid diffusion. This approach retains impressive response 760-fold increase in storage modulus, while dramatically reducing characteristic time merely 28 s. anticipate strategy be broadly applicable designing modulus-adaptive materials fast switching dynamics.

Language: Английский

Citations

1
Sterically Hindered Organogels with Self‐Healing, Impact Response, and High Damping Properties DOI

Jianfeng Cheng,

Songbao Fu,

Shitao Ma

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 3, 2024

Abstract Organogel materials are vital for impact or shock resistance because of their highly tailored dynamic properties. However, concurrently achieving excellent anti‐impact and damping performances, high stability, self‐healing properties is challenging. Herein, a novel intelligent protective organogel (IPO) comprising boronic ester containing poly(urethane–urea) as the network skeleton with matching mesh size synthesized, precisely entraps hyperbranched fluid used bulky solvent via steric hindrance. The IPO exhibits ability, responsiveness (a 1950‐fold increase in flow stress under various speeds), energy dissipation (the loss factor >0.8 from 10 −4 to 4 Hz). maintains its mechanical during hot pressing hydrolysis, exhibiting stability. Furthermore, omnibearing protection. When coating, dissipates force by 87% 89% control upon passive active impact, respectively. pad, it attenuates 91% amplitude high‐frequency vibrations. This study offers perspective on synthesis sterically hindered provides valuable insights into development next‐generation that exhibit vibration resistance.

Language: Английский

Citations

7
Solvation Chemistry Enables Eutectogels with Ultrahigh Autofluorescence, Toughness, and Adhesion under Extreme Environments DOI
Xin Jiang, Yanbei Hou, Yanan Wang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 26, 2024

Abstract Compared to conventional gels, eutectogels encompassing deep eutectic solvents (DESs) circumvent the shortboards including poor temperature resistance, high cost, and undesired toxicity. However, existing suffer weak intra‐ interchain interactions, which culminates in vanishing autofluorescence, mechanic feeble adhesion. Although myriad strategies have been proposed boost polymer/polymer interactions within processes are time‐consuming, not suitable for mass production or emergent deployment. Herein, deal with it, a facile solvation chemistry is leveraged build dynamic rigid network via incorporating active polymer backbones DESs. Within these eutectogels, DESs play magnet‐like role, physically cluster chains together multiple noncovalent forces, thus intensifying DESs/polymer interactions. This bestows rare autofluorescence unprecedentedly strength, toughness, adhesion among reported analogues, even harsh conditions. Moreover, mechanism of fully scrutinized first time. It believed that this strategy can be easily expanded orchestrations other soft materials.

Language: Английский

Citations

6
A Robust Core‐Shell Nanofabric with Personal Protection, Health Monitoring and Physical Comfort for Smart Sportswear DOI Open Access

Peiqi Wu,

Jianfeng Gu, Xue Liu

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(47)

Published: Oct. 6, 2024

Abstract Smart textiles with a high level of personal protection, health monitoring, physical comfort, and wearing durability are highly demanded in clothing for harsh application scenarios, such as modern sportswear. However, seamlessly integrating smart system has been long‐sought but challenging goal. Herein, based on coaxial electrospinning techniques, non‐woven textile (Smart‐NT) integrated impact resistance is developed, multisensory functions, radiative cooling effects. This Smart‐NT comprised core‐shell nanofibers an ionic conductive polymer sheath impact‐stiffening core. The soft textile, thickness only 800 µm, can attenuate over 60% force, sense pressure stimulus sensitivity up to 201.5 kPa −1 , achieve temperature sensing resolution 0.1 °C, reduce skin by ≈17 °C under solar intensity 1 kW m −2 . In addition, the stretchable durable robust, retaining its multifunction features 10 000 bending multiple washing cycles. Finally, scenarios demonstrated real‐time body comfort sportswear outdoor sports. strategy opens new avenue seamless integration systems.

Language: Английский

Citations

5
Making Sticky‐Slippery Switchable Fluorogels Through Self‐Adaptive Bicontinuous Phase Separation DOI Open Access
Xiaoxia Li,

Baohu Wu,

Shengtong Sun

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(48)

Published: Oct. 14, 2024

Developing gel materials with tunable frictional properties is crucial for applications in soft robotics, anti-fouling, and joint protection. However, achieving reversible switching between extreme sticky slippery states remains a formidable challenge due to the opposing requirements energy dissipation on surfaces. Herein, self-adaptive bicontinuous fluorogel introduced that decouples lubrication adhesion at varying temperatures. The phase-separated comprises fluorinated lubricating phase stiff yet thermal-responsive load-bearing phase. At ambient temperature, exhibits highly surface owing low-energy-dissipating layer, demonstrating an ultralow friction coefficient of 0.004. Upon heating, transitions into dissipating state via hydrogen bond dissociation, concurrently releasing adhesive dangling chains make strength ≈362 kPa. This approach provides promising foundation creating advanced adaptive on-demand self-adhesive self-lubricating capabilities.

Language: Английский

Citations

4
Dynamic Covalent Sulfur‐Selenium Rich Polymers via Inverse Vulcanization for High Refractive Index, High Transmittance, and UV Shielding Materials DOI Creative Commons
Jinhong Jia, Yao Chai,

Xingwei Xun

et al.

Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

Recent advancements in inverse vulcanization have led to the development of sulfur-rich polymers with diverse applications. However, progress is constrained by harsh high-temperature reaction conditions, limited applicability, and generation hazardous H2S gas. This study presents an induced IV method utilizing selenium octanoic acid, yielding sulfur-selenium rich full atom economy, even at a low-temperatures 100-120 °C. The resultant exhibit exceptional optical properties: 1) A high refractive index, reaching 1.89 when total content 65%; 2) Excellent UV shielding capabilities, blocking ultraviolet rays while permitting 95.1-98.6% transmission visible light; 3) Notable transparency, polymer films 0.94 mm thickness exhibiting good transparency under natural light. materials also demonstrate environmental stability prolonged exposure hot or cold conditions. Additionally, display adhesive strength as evidenced two adhered glass slides material lifting weights up 20 kg without any displacement their glued area. These properties provide new avenue for be implemented high-precision instruments unique characteristics.

Language: Английский

Citations

0
Protein-based supramolecular adhesive capable of on-demand adhesion and anti-adhesion for preventing undesired epidural tissue adhesion DOI
Tong Li,

Wen Guang,

He Zhao

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159778 - 159778

Published: Jan. 1, 2025

Language: Английский

Citations

0
A low-entropy-penalty hierarchical multiphase design for soft yet strong hydrogels DOI
Rong Zhou, Yong Jin, Haonan Chen

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160787 - 160787

Published: Feb. 1, 2025

Language: Английский

Citations

0
Anion-π Type Polymeric Nanoparticle Dispersants for Enhancing the Dispersion Stability of Organic Pigments in Water DOI Creative Commons

Na Li,

Lulu Li, Chenghua Sun

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(5), P. 975 - 975

Published: Feb. 20, 2025

High-performance water-based inkjet inks are critical for advancing printing technology. The performance of depends largely on the dispersion stability organic pigments. This imposes higher demands polymeric dispersants. However, relatively weak interaction between dispersants and pigments limits their in inks. Consequently, it is crucial to seek that exhibit stronger interactions with pigments, alongside high performance, universality. In this work, five types nanoparticles (PNPs) anion-π groups were synthesized via a simple emulsion polymerization method. Compared traditional dispersants, type PNPs exhibited significant advantages including low viscosity, solvent resistance, temperature resistance. Stronger interactions, salt-bridge hydrogen bondings (H-bonds) π-π these different demonstrated by FTIR, UV-Vis, XPS spectral tests. particular, PNPs-5, bearing -PhSO3- groups, strongest inks, formulated PNPs-5 serving as dispersant, remarkable outstanding weatherability. work rationally constructs strategy preparing universally applicable enhance thereby presenting broader perspective applications field printing.

Language: Английский

Citations

0