Synergistic supramolecular networks of conductive self-healable gels (CSGs) containing polythioctic acid (PTA), Fe³⁺ ion, pyromellitic acid (PA), and interpenetrating polyaniline (PANI) are synthesized and developed in this study. These non-covalent networks interlocked through physical (hydrogen, ionic, and coordination) bonds offer reversible supramolecular bonding and afford freely shapeable and injectable CSGs, which contribute to the high stretchability (more than 50-times elongation) as well as the ultrafast self-healable recoveries in mechanical and electrical timescales of 90 s and 0.7 s, respectively. The optimum supramolecular gel-based sensor shows an outstanding strain sensitivity (gauge factor = 11) along with a high tunable pressure sensitivity (2.8 kPa⁻¹). The stable electrical performance with high durability (>800 cycles) and excellent adhering properties to a wide range of substrates facilitate the detection of large (joint motion) and subtle (muscle movement) deformations of the human body. The real-life applications of multifunctional CSGs are further investigated through human motion detection, adhesive applications, and injectable writing as conductive inks for potential 3D printing.

中文翻译：

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高度可拉伸的超分子导电自修复凝胶，用于可注射粘合剂和柔性传感器应用

合成并开发了包含聚硫辛酸（PTA），Fe ³⁺离子，均苯四酸（PA）和互穿聚苯胺（PANI）的导电自修复凝胶（CSG）的协同超分子网络。这些通过物理键（氢键，离子键和配位键）互锁的非共价网络提供了可逆的超分子键合，并提供了可自由成形和可注射的CSG，从而有助于实现高拉伸性（超过50倍的伸长率）以及超快的自粘合性。在90 s和0.7 s的机械和电气时间尺度上可恢复的恢复时间。最佳的基于超分子凝胶的传感器显示出出色的应变敏感性（应变系数= 11）以及高可调压力敏感性（2.8 kPa ^-1）。具有高耐久性（> 800次循环）的稳定电性能以及对各种基材的出色粘附性，有助于检测到人体的大（关节运动）和微妙（肌肉运动）变形。多功能CSG的实际应用将通过人体运动检测，粘合剂应用以及作为潜在3D打印的导电墨水的可注入书写方式进行进一步研究。