Incorporation of Deep Eutectic Solvents into Advanced Adhesive Materials: A Review on Eutectoadhesives

Abstract

Toward the goals of green chemistry and sustainability, deep eutectic solvents (DES), owing to their low volatility, high tunability, and unique hydrogen-bonding networks, have emerged as promising candidates for fabricating high-performance, multifunctional, and environmentally benign adhesive materials. This review article systematically summarizes recent advances in DES-based adhesives (eutectoadhesives). First, the classification, specific composition design, structural regulation, and materials engineering of eutectoadhesives are discussed. After that, their adhesion capability and functional characteristics are comprehensively discussed, with particular emphasis on the critical roles of DES in enhancing interfacial bonding strength, imparting self-healing capability, enabling on-demand debonding, and enhancing environmental tolerance. Meanwhile, their unique advantages in multifunctional integration—such as electrical, optical, and antibacterial functionalities—are highlighted. Then, we review the emerging applications of eutectoadhesives in diverse fields, ranging from biological adhesion and green wood adhesion to emerging scenarios including underwater adhesion, intelligent wearable sensing, energy storage devices, and agricultural pest control. Finally, the current challenges and future development directions in this field are outlined, with the aim of providing valuable guidance for the design and application of next-generation multifunctional adhesive materials.