“…Biointerfaces are intermediaries that facilitate the combinations and connections between inanimate constructs and animate organisms, which are committed to create the buffer and transition regions between biotic tissues and abiotic devices. , Nowadays, benefiting from progressing material sciences with interdisciplinary approaches, biointerfaces are making impressive breakthroughs that are now available to the interactions and communications of devices to tissues, such as optical and electrical energy conversion, heterogeneous biological delivery, and dynamic infection resistance. − The technologies are advancing, but the dazzling novel functions of biointerfaces would always require steady and reliable foundations, which should have not only convincing durability and biological security but also sufficient adhesion to both tissues and devices. , Current strategies tend to fabricate multiple-layer composite biointerfaces, which contain specialized adhesive layers or solid precipitation layers such as dopamine and hydroxyapatite, to assist immobilized functional layers. , The layering design could be a convenient way to effectively integrate functions, but common biomaterials like proteins and polysaccharides might be weakened and lose interlayer connections during the loops of immersing, depositing, and drying due to swelling or dissolving natures and different charge properties. All these concerns lead to the inspiration to develop integrative biointerfaces that are expected to achieve biocompatibility, bioactivity, biodurability, and heterogeneous affinity to both tissues and devices within one integrative layer.…”