The chemistry and wettability of oxygen containing surfaces can be conveniently modified by silanization with various organosilanes which form SiO bonds on the surface. This work shows that a superhydrophobic nanoporous polymer coating can be reverted to its previous hydrophilic state by removing the fluoroalkyl silane with fluoride anions using tetrabutyl ammonium fluoride. This leads to a completely reversible process of silanization and desilanization which can be performed in less than 2 min for each step as proven by droplet shape analysis and secondary ion mass spectrometry. Additionally, the desilanization solution can be applied spatially by an automated liquid dispenser or manually by a brush, leading to patterns with different wettability, such as droplet microarrays or liquid channels.

中文翻译：

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硅烷化可逆的表面润湿性

含氧表面的化学性质和润湿性可通过用各种有机硅烷硅烷化来方便地进行改性，这些有机硅烷会在表面形成SiO键。这项工作表明，通过使用四丁基氟化铵用氟阴离子除去氟烷基硅烷，可以将超疏水性纳米多孔聚合物涂层恢复为先前的亲水状态。这导致了完全可逆的硅烷化和脱硅化过程，对于每一步，在不到2分钟的时间内即可完成，如液滴形状分析和二次离子质谱所证明的那样。此外，可以通过自动液体分配器或刷子手动在空间上应用脱硅溶液，从而产生具有不同润湿性的图案，例如液滴微阵列或液体通道。