Abstract
AbstractAlthough bio‐adhesives have achieved many progresses, creating robust bio‐glues that could withstand the complex physiological microenvironment remains a significant challenge such as limited bioadhesion strength and stability, as well as slow adhesion speed caused by pH, enzymes, salt, and bacteria. Herein, a series of strong bio‐glues are successfully fabricated using a polyphenol–acrylamide–ruthenium crosslinking (PARC) reaction under visible light irradiation, involving acrylamides radical polymerization, polyphenols (extracts) coupling reaction, and ruthenium‐mediated photochemistry. The resulting bio‐glues underwent rapid sol–gel transition and exhibited adhesive properties within a short of time (≈5 s), which could quickly bond to various bio‐tissues. Moreover, these bioadhesives demonstrate high adhesion strength and stability with mucosal tissue in the oral environment, effectively promoting rat and pig oral mucosal wound healing. It is anticipated that this class of visible light‐responsive polyphenolic bio‐glues could serve as a robust tool for addressing oral mucosal defects in the clinic, offering a promising alternative to traditional treatments for oral mucosal disorders.
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