Key Laboratory of Colloid and Interface Chemistry (Shandong University), Jinan, 250100, PR China.
Chem Soc Rev. 2010 Feb;39(2):769-82. doi: 10.1039/b913622c. Epub 2009 Oct 20.
This critical review outlines the current state-of-the-art research on the reversibly switchable wettability of surface brought about by external stimuli and the exchange of counterions. Chemical composition and surface topography are the two key factors in the wettability of solid substrates. Applying external stimuli and exchanging counterions of ionic liquids and polyelectrolyte films are valuable approaches for rendering the change in surface chemistry and/or topography, and for driving the transition between hydrophilicity and hydrophobicity of surfaces. Through the combination of stimuli-responsive films and micro-/nanostructural surfaces, smart surfaces with reversible switching between superhydrophobicity and superhydrophilicity have been achieved. As an important advancement in reversibly switchable wettability, this review briefly introduces ionic liquids (ILs) as on-off systems to obtain reversibly switchable wettability and then discusses in more detail the methods to induce the reversibly switchable wettability of surfaces modified by ILs, additives, or thin films. In addition to reversibly switchable wettability mechanisms, open problems and potential solutions are discussed (157 references).
这篇评论性文章概述了目前关于表面在外力刺激和反离子交换作用下可逆转润湿性能的最新研究进展。固体基底的润湿性主要由化学组成和表面形貌两个关键因素决定。施加外部刺激和交换离子液体和聚电解质薄膜中的反离子是改变表面化学性质和/或形貌、驱动表面亲水性和疏水性转变的有效方法。通过将刺激响应性薄膜与微纳结构化表面相结合，已经实现了具有超亲水性和超疏水性之间可逆切换功能的智能表面。作为可逆转润湿性的一个重要进展，本文简要介绍了将离子液体 (ILs) 作为开-关系统来获得可逆转润湿性，然后详细讨论了通过 ILs、添加剂或薄膜修饰表面诱导可逆转润湿性的方法。除了可逆转润湿性机制外，本文还讨论了存在的问题和潜在的解决方案（引用了 157 篇参考文献）。
