Deep eutectic solvent based adhesive with dynamic adhesion, water-resistant and NIR-responsive retrieval properties

We demonstrate a new DES to prepare multifunctional supramolecular underwater adhesive material featuring for dynamic time-dependent adhesion, self-retrieval performance, multipurpose adhesion, and reusable property. [Display omitted] •The ALD with time-dependent adhesion shows an adhesive to non-adhesive change.•The adhesives can be self-retrieved due to buoyant flow and Marangoni effect.•Underwater adhesive composed of a new kind hydrophobic DES was invented.•MALD is still reusable after peeling the outer surface after immersion. Adhesives that exhibited dynamic adhesion in underwater environments are of great importance. Here, we report a simple yet versatile method to fabricate underwater adhesive with time-dependent dynamic adhesion derived from the silane-based polymerized deep eutectic solvent (PDES). Particularly, the incorporation of silane can endow the underwater adhesive with a time-dependent adhesive performance, i.e., the adhesion strength increased at first and then decreased. With the further introduction of MXene, NIR-controlled retrieval property can be achieved. We anticipate that the alternative strategy presented here will open a new avenue for designing high-performance underwater adhesive materials with tunable and synergistic properties.