Li Xiangyu, Zhang Runqing, Zhang Jingru, Li Qike, Yu Zhiqun, Zhou Zishuai, Lin Shiman, Li Zhong, Cui Miaomiao, Zhao Wenjie, Wang Liping, Wang Fuhui, Xu Dake
State Key Laboratory of Digital Steel, School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, P.R. China.
Foshan Graduate School of Innovation, Northeastern University, Foshan, 528312, P.R. China.
Angew Chem Int Ed Engl. 2025 Jun 2;64(23):e202503295. doi: 10.1002/anie.202503295. Epub 2025 Apr 10.
Artificial liquid-repellent surfaces are highly desirable to combat pervasive biofouling and corrosion in biological environments. However, existing strategies often suffer from slow binding kinetics and harsh fabrication conditions, hindering the concurrent integration of liquid repellency, universal adhesion, and robust flexibility. Herein, we report that it is possible to engineer microbial biofilms as eco-friendly, cohesive, and flexible materials for omniphobic slippery coatings fulfilling all these requirements. Unlike conventional synthetic slippery coatings requiring laborious surface pretreatments, biofilm sheets formed on demand assemble a durable nanotextured framework on diverse substrates with multiple material categories and surface topologies, serving as hydrophobic lubricant reservoirs. Employing this renewable material enables the scalable and sustainable coating production. The resulting optically transparent and highly flexible coatings manifest exceptional self-cleaning properties, readily shedding both waterborne and oily liquids over a broad viscosity range. Notably, the synergy between the corrosion-protective extracellular matrix and nonstick slipping motion confers unprecedented antibiofouling efficacy and corrosion resistance. This study offers a distinctive perspective on harnessing ubiquitous native biofilms as biomaterials for self-adaptive coatings, facilitating tailored functionality across broad applications.
人工拒液表面对于对抗生物环境中普遍存在的生物污垢和腐蚀非常理想。然而，现有策略往往存在结合动力学缓慢和制造条件苛刻的问题，阻碍了拒液性、通用粘附性和强大柔韧性的同时集成。在此，我们报告了利用微生物生物膜作为环保、有粘性且灵活的材料来制备满足所有这些要求的超疏水滑涂层是可行的。与需要繁琐表面预处理的传统合成滑涂层不同，按需形成的生物膜片在具有多种材料类别和表面拓扑结构的不同基材上组装了一个耐用的纳米纹理框架，作为疏水润滑剂储存库。使用这种可再生材料能够实现可扩展且可持续的涂层生产。所得的光学透明且高度灵活的涂层表现出卓越的自清洁性能，能在很宽的粘度范围内轻松地甩掉水性和油性液体。值得注意的是，具有防腐蚀作用的细胞外基质与不粘滑动运动之间的协同作用赋予了前所未有的抗生物污垢功效和耐腐蚀性。这项研究为利用无处不在的天然生物膜作为自适应涂层的生物材料提供了独特视角，有助于在广泛应用中实现定制功能。
