Here the authors report a versatile and strong underwater adhesive that was inspired by the chemical features of mussel foot proteins. A random copolymer (poly(N-(3,4-dihydroxyphenethyl)methacrylamide-co-methacryloxyethyltrimethyl ammonium chloride-co-acrylamide) (PDMA)–Tf₂N) was prepared that contained side-chain catechol groups and quaternary ammonium cations that were ion-paired with bis(trifluoromethane-sulfonyl)imide anion (Tf₂N⁻). After dissolving PDMA–Tf₂N and poly(acrylic acid) in dimethyl sulfoxide, a polyelectrolyte complex coacervate adhesive (P2) could be formed, which could be triggered through solvent exchange. P2 exhibited outstanding underwater shear strength to various substrate surfaces. After a critical curing time (t _s = 10 min), the adhesion strength of P2 to glass increased sharply up to 187.298 kPa (t _s = 40 min).

中文翻译：

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受贻贝启发：仿生聚电解质复合凝聚层粘合剂通过水交换启动连接

在这里，作者报告了一种多功能且坚固的水下粘合剂，其灵感来自贻贝足蛋白的化学特征。制备了含有侧链儿茶酚基团和季铵阳离子的无规共聚物（聚（N-（3,4-二羟基苯乙基）甲基丙烯酰胺-共-甲基丙烯酰氧基乙基三甲基氯化铵-共-丙烯酰胺）（PDMA）-Tf _{2 N）与双(三氟甲磺酰基)亚胺阴离子(Tf 2} N ^- )离子配对。溶解 PDMA-Tf _2后N和聚（丙烯酸）在二甲基亚砜中，可以形成聚电解质复合凝聚层粘合剂（P2），可以通过溶剂交换触发。P2 对各种基材表面表现出出色的水下剪切强度。经过临界固化时间（t _s = 10 分钟）后，P2 对玻璃的粘合强度急剧增加至 187.298 kPa（t _s = 40 分钟）。