Merging Supramolecular Chemistry With Nanotechnology for Hydrogel‐Based Soft Electronics

The convergence of supramolecular chemistry and nanotechnology has transformed the design of hydrogel‐based soft electronics by integrating dynamic molecular interactions with nanoscale conductive architectures. Supramolecular hydrogels, stabilized through reversible noncovalent interactions, offer self‐healing, adaptive, and biocompatible properties essential for interfacing with biological systems. Incorporation of conductive nanomaterials such as graphene, MXenes, and conductive polymers enhances charge transport while reinforcing mechanical integrity. These hybrid networks achieve tunable ionic and electronic conduction, enabling applications in flexible sensors, implantable interfaces, and soft energy devices. This review highlights recent advances in molecular engineering, structure–property relationships, and device‐level applications of supramolecular–nanocomposite hydrogels, outlining emerging design principles that bridge material adaptability with electronic functionality for next‐generation biointegrated and soft electronic systems.