Self‐Reinforcing Ionogel Bioadhesive Interface for Robust Integration and Monitoring of Bioelectronic Devices with Hard Tissues

作者：Chenghao Jiang, Junhao Fu, Hao Zhang, Yingjie Hua, Leitao Cao, Jing Ren, Mingliang Zhou, Fei Jiang, Xinquan Jiang, Shengjie Ling · 发表于：Advanced Materials · 年份：2024 · DOI：10.1002/adma.202413028 · 被引用次数：20 · 研究领域：Silk-based biomaterials and applications、Advanced Sensor and Energy Harvesting Materials、Polymer Surface Interaction Studies

Abstract Integrating bioelectronic devices with hard tissues, such as bones and teeth, is essential for advancing diagnostic and therapeutic technologies. However, stable and durable adhesion in dynamic, moist environments remains challenging. Traditional bioadhesives often fail to maintain strong bonds, especially when interfacing with metal electrodes and hard tissues. This study introduces a self‐reinforcing ionogel bioadhesive interface (IGBI) combining silk fibroin and calcium ions, designed to provide robust and conductive integration of bioelectronic devices with hard tissues. The IGBI exhibits strong adhesion (up to 186 J m −2 ) and undergoes mechanical self‐reinforcement through a structural transition in silk fibroin under physiological conditions. In vivo experiments demonstrate the IGBI's effectiveness in repairing bone defects and reimplanting teeth, with the added capability of wireless, real‐time monitoring of bone healing. This approach allows for continuous tracking of tissue regeneration without a second invasive surgery for device removal. The IGBI represents a significant advancement in bioelectronic integration, offering a durable and versatile solution for challenging environments. Such unique self‐reinforcing properties make the IGBI a promising material for biomedical applications where traditional adhesives are insufficient.