Multibond-synergized cysteine aggregates crosslinked ionogels with mechanically adaptive properties for robust ionic skins

IF 9.7 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science Pub Date : 2025-10-21 DOI:10.1016/j.jcis.2025.139306

Guge Niku , Yinpeng Chen , Meiyi He , Hao Chen , Yanan Wang , Wen Jiang Zheng

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Abstract

Conventional ionogels face irreconcilable trade-offs between mechanical robustness, toughness, and recoverability, limiting their utility in ionic skins. Inspired by collagen's hierarchical bonding, we develop L-cysteine-derived multibond-synergized cysteine aggregates (MSCA) with dual amide/disulfide linkages as dynamic crosslinkers in poly (2,2,3,3,4,4-Hexafluorobutyl acrylate-co-acrylamide) (P (HFBA-co-AAm)) ionogel. The resulting ionogels achieve breakthrough properties: 7.47 MPa tensile strength, 29.6 kJ/m² fracture energy, and 93 % cyclic recovery via thermal-activated bond reformation (80 °C/20 min). These materials concurrently demonstrate medical-grade strain sensing (GF = 7.82@0–5 %, <4.6 % signal drift over 1000 cycles), rapid shape-memory (35 s recovery at 80 °C), high shape fixity (95.24 %), recovery rates (95.34 %), and water resistance (1.8 % swelling after 20 h). Validated in continuous pulse monitoring and joint motion tracking, this design overcomes critical limitations in durable wearable sensing

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多键协同半胱氨酸聚集体交联离子凝胶具有机械适应性强的离子皮肤

传统的离子凝胶在机械稳健性、韧性和可恢复性之间面临着不可调和的权衡，限制了它们在离子皮肤中的应用。受胶原分层键的启发，我们开发了l -半胱氨酸衍生的具有双酰胺/二硫键的多键协同半胱氨酸聚集体（MSCA）作为聚（2,2,3,3,4,4-六氟丙烯酸丁酯-共丙烯酰胺）（P (HFBA-co-AAm)）离子凝胶的动态交联剂。得到的电离胶具有突破性的性能：抗拉强度为7.47 MPa，断裂能为29.6 kJ/m2，通过热激活键重组（80°C/20分钟），循环回收率为93%。这些材料同时表现出医疗级应变传感（GF = 7.82@0 - 5%，超过1000次循环的信号漂移<； 4.6%），快速形状记忆（在80°C下35 s恢复），高形状固定性（95.24%），回收率（95.34%）和耐水性（20小时后1.8%膨胀）。在连续脉冲监测和关节运动跟踪中得到验证，该设计克服了耐用可穿戴传感的关键限制

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来源期刊

Journal of Colloid and Interface Science 化学-物理化学

CiteScore

16.10

自引率

7.10%

发文量

2568

审稿时长

2 months

期刊介绍： The Journal of Colloid and Interface Science publishes original research findings on the fundamental principles of colloid and interface science, as well as innovative applications in various fields. The criteria for publication include impact, quality, novelty, and originality. Emphasis: The journal emphasizes fundamental scientific innovation within the following categories: A.Colloidal Materials and Nanomaterials B.Soft Colloidal and Self-Assembly Systems C.Adsorption, Catalysis, and Electrochemistry D.Interfacial Processes, Capillarity, and Wetting E.Biomaterials and Nanomedicine F.Energy Conversion and Storage, and Environmental Technologies