Ensuring stable integration of diverse soft electronic components for reliable operation under dynamic conditions is crucial. However, integrating soft electronics, comprising various materials like polymers, metals, and hydrogels, poses challenges due to their different mechanical and chemical properties. This study introduces a dried-hydrogel adhesive made of poly(vinyl alcohol) and tannic acid multilayers (d-HAPT), which integrates soft electronic materials through moisture-derived chain entanglement. d-HAPT is a thin (~1 µm) and highly transparent (over 85% transmittance in the visible light region) adhesive, showing robust bonding (up to 3.6 MPa) within a short time (<1 min). d-HAPT demonstrates practical application in wearable devices, including a hydrogel touch panel and strain sensors. Additionally, the potential of d-HAPT for use in implantable electronics is demonstrated through in vivo neuromodulation and electrocardiographic recording experiments while confirming its biocompatibility both in vitro and in vivo. It is expected that d-HAPT will provide a reliable platform for integrating soft electronic applications.

确保各种软电子元件的稳定集成以在动态条件下可靠运行至关重要。然而，集成由聚合物、金属和水凝胶等各种材料组成的软电子产品，由于其不同的机械和化学特性而带来了挑战。这项研究介绍了一种由聚（乙烯醇）和单宁酸多层（d-HAPT）制成的干燥水凝胶粘合剂，它通过湿气衍生的链缠结将软电子材料集成在一起。 d-HAPT 是一种薄（~1 µm）且高度透明（可见光区域透射率超过 85%）的粘合剂，可在短时间内（<1 分钟）表现出牢固的粘合力（高达 3.6 MPa）。 d-HAPT 展示了在可穿戴设备中的实际应用，包括水凝胶触摸面板和应变传感器。此外，通过体内神经调节和心电图记录实验证明了 d-HAPT 在植入式电子设备中的应用潜力，同时确认了其体外和体内的生物相容性。预计d-HAPT将为集成软电子应用提供可靠的平台。