School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang District, Shanghai 200240, China.
State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200240, China.
ACS Appl Bio Mater. 2021 Aug 16;4(8):6351-6360. doi: 10.1021/acsabm.1c00582. Epub 2021 Aug 2.
Biofilm formation on the surface of materials has brought great troubles to various industries. Designing surfaces with long-lasting antibiofouling properties can help restrain primary bacterial and protein attachment and subsequent biofilm formation for a long time, which is also of great significance for industrial applications. In this work, we successfully prepared fluorinated carbon nanotubes through a one-step fluorination method using fluorosilane and fabricated a superamphiphobic coating using a simple spray method. This coating with ultralow surface free energy and stable micro/nano structures achieved highly efficient and long-term underwater antibiofouling properties. Tea, milk, BSA, and bacterial solution can bounce highly on this surface without wetting the surface in air. The long-term existence of the underwater air-bubble layer on the surface of the superamphiphobic coating was observed. Thus, this surface can effectively resist BSA and bacterial attachment (), and the efficiency, respectively, reaches 97.5 and 98.2%. Even if it is fully soaked in BSA and BS solution for 120 h, the whole surface is still able to repel water, BSA, and BS solution very well. In addition, the coating possessed excellent wear resistance, the CAs of BSA and BS solution just decreased slightly (higher than 158°), and the sliding angles increased slightly (lower than 4°) after 50 tape abrasion cycles. Therefore, this superamphiphobic coating may have promising applications for marine devices, biomedical materials, protective clothing, and chemical shielding.
生物膜在材料表面的形成给各行业带来了极大的困扰。设计具有持久抗生物污染性能的表面可以长时间抑制细菌和蛋白质的初始附着和随后的生物膜形成，这对于工业应用也具有重要意义。在这项工作中，我们成功地通过一步氟硅烷氟化法制备了氟化碳纳米管，并通过简单的喷涂方法制备了超双疏涂层。这种具有超低表面自由能和稳定的微/纳米结构的涂层实现了高效和长期的水下抗生物污染性能。茶、牛奶、BSA 和细菌溶液在该表面上可以高度反弹而不会在空气中润湿表面。观察到超双疏涂层表面长时间存在水下气泡层。因此，该表面可以有效地抵抗 BSA 和细菌的附着（），效率分别达到 97.5%和 98.2%。即使在 BSA 和 BS 溶液中完全浸泡 120 小时，整个表面仍然能够很好地排斥水、BSA 和 BS 溶液。此外，该涂层具有优异的耐磨性，经过 50 次纸带磨损循环后，BSA 和 BS 溶液的 CA 仅略有下降（高于 158°），滑动角略有增加（低于 4°）。因此，这种超双疏涂层可能在海洋设备、生物医学材料、防护服和化学屏蔽等领域有很好的应用前景。
