Dynamic Molecular Design of Force-responsive Hydrogels
Haoyang Xu , Jiahui Yang , Zepeng Li , Weishuai Di , Junsheng Zhang , Yiran Li , Yi Cao
Chemical Research in Chinese Universities ›› : 1 -15.
Force-responsive hydrogels are dynamic soft materials that convert mechanical stimuli into energy dissipation, network reconstruction, functional adaptation, or mechanochemical transduction. This review discusses how molecular interactions and network architectures enable such responses, focusing on dynamic covalent bonds, noncovalent and supramolecular interactions, hierarchical and topological structures, and protein mechanophores. We summarize key mechanisms including sacrificial-bond dissociation, self-healing, stress relaxation, strain stiffening, fatigue resistance, mechanical training, self-reinforcement, self-growth, and force-induced chemical activation. The potential implications of these design principles for adaptive biomedical and engineering systems are briefly considered. Finally, we discuss challenges in balancing robustness and adaptability, improving fatigue durability, enhancing predictability, and integrating multiple functions. By framing hydrogels through a structure-force-response relationship, this review provides a cross-scale perspective for designing adaptive, reconfigurable, and intelligent soft materials.
Force-responsive hydrogel / Dynamic network / Supramolecular interaction / Protein mechanophore / Mechanochemical transduction
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Jilin University, The Editorial Department of Chemical Research in Chinese Universities and Springer-Verlag GmbH
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