Conductive hydrogels are an ideal bio-integrated soft material and show great potential in soft sensors. However, it remains a great challenge to develop an integrated conductive gel combining excellent environmental stability and mechanical properties. Herein, we synthesize a transparent, self-adhesive conductive organohydrogel with excellent environmental stability and UV-blocking performance by constructing multiple cross-links between tannic acid, polyacrylamide, and polyvinyl alcohol. The addition of vinyl hybrid silica nanoparticles can promote dynamic cross-linking of polymer networks and endow organohydrogels with superior mechanical performance (>1800%, 320 kPa). Concurrently, the binary solvent system comprising water and ethylene glycol enables organohydrogels to accommodate different application environments (from −40 °C to 40 °C). Notably, with the incorporation of tannic acid, organohydrogels exhibit lasting and repeatable adhesion (80 kPa), as well as good UV-blocking (>90%). Furthermore, these conductive organohydrogels with great strain sensitivity were used as strain sensors to monitor and distinguish large movements (soft robot movements) and subtle human movements (smiling and electrocardiograph signal) at different temperatures. The conductive organohydrogels have great potential in healthcare monitoring and smart wearable soft electronic devices.

中文翻译：

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超可拉伸，自粘，透明和离子导电有机水凝胶，用于柔性传感器

导电水凝胶是一种理想的生物集成软材料，在软传感器中显示出巨大的潜力。然而，开发结合了优异的环境稳定性和机械性能的集成导电凝胶仍然是巨大的挑战。本文中，我们通过在鞣酸，聚丙烯酰胺和聚乙烯醇之间构建多个交联键，合成了一种具有优异的环境稳定性和紫外线阻隔性能的透明自粘导电有机水凝胶。乙烯基杂化二氧化硅纳米粒子的添加可以促进聚合物网络的动态交联，并赋予有机水凝胶以优异的机械性能（> 1800％，320 kPa）。同时，由水和乙二醇组成的二元溶剂体系使有机水凝胶能够适应不同的应用环境（-40°C至40°C）。值得注意的是，通过掺入单宁酸，有机水凝胶显示出持久且可重复的附着力（80 kPa），以及良好的紫外线阻隔性（> 90％）。此外，这些具有高应变敏感性的导电有机水凝胶被用作应变传感器，以监测和区分在不同温度下的大动作（软机器人动作）和微妙的人体动作（微笑和心电图信号）。导电有机水凝胶在医疗保健监测和智能可穿戴软电子设备中具有巨大潜力。这些具有高应变敏感性的导电有机水凝胶被用作应变传感器，以监测和区分在不同温度下的大动作（机器人柔和的动作）和微妙的人体动作（微笑和心电图信号）。导电有机水凝胶在医疗保健监测和智能可穿戴软电子设备中具有巨大潜力。这些具有高应变敏感性的导电有机水凝胶被用作应变传感器，以监视和区分在不同温度下的大动作（机器人柔和的动作）和微妙的人体动作（微笑和心电图信号）。导电有机水凝胶在医疗保健监测和智能可穿戴软电子设备中具有巨大潜力。