Dermis‐Inspired Multimodal and Reversible Damaging‐Healing Monitoring Coating via Dynamic Bonding Synchronous Activation Strategy

ABSTRACT Supramolecular composite materials with excellent self‐healing and monitoring properties show significant potential for high‐tech industry applications. However, conventional self‐healing and self‐monitoring materials encounter considerable challenges in providing reversible indications of the dynamic damaging‐healing process, primarily owing to asynchronism between dynamic bonds reconstruction and mechanophore transition. Here, a novel strategy for synchronous activation of dynamic bonding was employed to develop a bioinspired self‐monitoring coating inspired by human dermis. The coating mimics the process of bleeding, remodeling, and blood stasis dissipation, accompanied by synchronous color changes observed during wound healing. This strategy employs amino‐functionalized rhodamine as an analog for arteriole, polyurea frameworks as a collagen‐equivalent matrix, and MXene as a fibroblasts mimic, leveraging visual signals to monitor and assess healing state of coating damage in real‐time. The coating achieves multimodal parameter correlation ( δ wr— X gv , r he – X gv ), high sensitivity (gauge factor ≥ 0.98), and relatively stable monitoring accuracy. It exhibits rapid self‐healing (60 s) and synchronous fluorescence decay under near‐infrared irradiation, along with exceptional cyclic reliability (>15 cycles), ensuring reversible and semi‐quantitative monitoring of damaging‐healing processes. This molecular engineering strategy establishes a new design for intelligent damage‐sensing materials, demonstrating practical utility in marine protection and broader potential for structural monitoring applications.