Surface‐Independent Reversible Transition of Oil Adhesion under Water Induced by Lewis Acid–Base Interactions

Reversible surface adhesion transitions are induced by controlling polar interactions at liquid–liquid interfaces and assessed using contact angle hysteresis (Δθ). The switchable oil adhesion is attributed to the decrease in the liquid–liquid interfacial tension from Lewis acid–base interactions at the oil–water interface. Thus, the polar interactions changed the contact state. This study provides a novel strategy for adhesion control, and may inspire scientists working on liquid transport involving oil/water/solid triphase systems and bioadhesion regulation under water.