A Universal and Reversible Wet Adhesive via Straightforward Aqueous Self-Assembly of Polyethylenimine and Polyoxometalate,ACS Applied Materials & Interfaces

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A Universal and Reversible Wet Adhesive via Straightforward Aqueous Self-Assembly of Polyethylenimine and Polyoxometalate
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-09-26 , DOI: 10.1021/acsami.1c14231
Yuexin Cui ₁ , Liying Yin ₁ , Xiaoya Sun ₁ , Ning Zhang ₁ , Nan Gao ₁ , Guangshan Zhu ₁

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The excellent adhesion of mussels under wet conditions has inspired the development of numerous catechol-based wet adhesives. Nevertheless, the performance of catechol-based wet adhesive suffers from the sensitivity toward temperature, pH, or oxidation stimuli. Therefore, it is of great significance to develop non-catechol-based wet adhesives to fully recapitulate nature’s dynamic function. Herein, a novel type of non-catechol-based wet adhesive is reported, which is readily formed by self-assembly of commercially available branched polyethylenimine and phosphotungstic acid in aqueous solution through the combination of electrostatic interaction and hydrogen bonding. This wet adhesive shows reversible, tunable, and strong adhesion on diverse substrates and further exhibits high efficacy in promoting biological wound healing. During the healing of the wound, the as-prepared wet adhesive also possesses inherent antimicrobial properties, thus avoiding inflammations and infections due to microorganism accumulation.

中文翻译：

一种通过聚乙烯亚胺和多金属氧酸盐的简单水性自组装的通用和可逆湿粘合剂

贻贝在潮湿条件下的出色粘附性激发了许多基于儿茶酚的湿粘合剂的开发。然而，基于邻苯二酚的湿粘合剂的性能受到对温度、pH 或氧化刺激的敏感性的影响。因此，开发非儿茶酚基湿粘合剂以充分再现自然的动态功能具有重要意义。本文报道了一种新型的非邻苯二酚基湿粘合剂，它是由市售的支化聚乙烯亚胺和磷钨酸在水溶液中通过静电相互作用和氢键的结合自组装形成的。这种湿粘合剂在多种基材上表现出可逆、可调和强的粘附力，并在促进生物伤口愈合方面进一步表现出高效。

更新日期：2021-10-06

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