Antifogging coatings prepared by highly hydrophilic/superhydrophilic strategies are susceptible to general oil contamination, hence readily losing their activities. Herein, a stimuli-responsive antifogging/oil-repellent coating with a delicate balance between hydrophilic and oleophobic components was prepared via a UV-assisted cross-linking method. Initially, different contents of acrylate monomers, including acrylic acid (AA), 1H,1H,2H,2H-tridecafluoro-n-octyl acrylate (TFOA), and 4-benzoylphenyl acrylate (BPA) were thermally polymerized to obtain a series of terpolymers, poly(AA-co-TFOA-co-BPA). Afterwards, poly(AA-co-TFOA-co-BPA) was covalently tethered to varied substrate surfaces (i.e., glass slides, PC, PET, and PVC) through a UV triggered anchoring of BPA. Benefiting from the delicate balance between hydrophilic poly(AA) and oleophobic poly(TFOA), the resultant coating displays solvent sensitive stimuli-responsive wettability, driven by the encountered liquids with different surface tensions. Therefore, these coatings show excellent anti-fogging ability with ∼90% light transmission, in a wide temperature range from −20 °C to 85 °C, meanwhile, the coatings also display remarkably high oil-repellence with an extremely low sliding angle for low tension liquids. These findings support the development of functional coatings that can highly maintain antifogging performances while effectively avoiding oil contamination in various imaging, medical and analytical applications.

中文翻译：

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具有防雾拒油性能的紫外光固化刺激响应涂料

通过高度亲水/超亲水策略制备的防雾涂层容易受到一般油污染的影响，因此很容易失去其活性。在此，通过紫外线辅助交联方法制备了一种在亲水性和疏油性组分之间具有微妙平衡的刺激响应性防雾/拒油涂层。最初，将不同含量的丙烯酸酯单体，包括丙烯酸（AA）、1H,1H,2H,2H-十三氟-正辛基丙烯酸酯（TFOA）和丙烯酸4-苯甲酰苯酯（BPA）进行热聚合，得到一系列三元共聚物, 聚 (AA- co- TFOA- co- BPA)。之后，poly(AA- co- TFOA- co- BPA) 共价连接到不同的基材表面（即、载玻片、PC、PET 和 PVC）通过紫外线触发的 BPA 锚定。得益于亲水性聚 (AA) 和疏油性聚 (TFOA) 之间的微妙平衡，所得涂层显示出溶剂敏感的刺激响应润湿性，由遇到的具有不同表面张力的液体驱动。因此，这些涂层在-20°C 至 85°C 的宽温度范围内表现出优异的防雾能力，透光率约为 90%，同时，涂层还显示出非常高的拒油性和极低的滑动角低压液体。这些发现支持了功能涂层的开发，该涂层可以在各种成像、医疗和分析应用中高度保持防雾性能，同时有效避免油污染。