Photo-switchable smart superhydrophobic surface with controllable superwettability,Polymer Chemistry

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Photo-switchable smart superhydrophobic surface with controllable superwettability
Polymer Chemistry ( IF 4.1 ) Pub Date : 2021-08-25 , DOI: 10.1039/d1py00984b
Xiaoyan Yang ₁ , Haibao Jin ₁ , Xinfeng Tao ₁ , Binbin Xu ₁ , Shaoliang Lin ₁

Affiliation

New-generation smart surfaces responsive to external stimuli with a controllable wettability have garnered increasing attention in recent years. Notably, a smart surface with a switchable wettability that manifests the facile transition between water-adhesive, rolling isotropic, and rolling anisotropic forms has yet to be explored. Herein, we report the crafting of a superhydrophobic surface with both tunable microstructures and wettability by capitalizing on the azobenzene-containing memory polymer as the substrate. Intriguingly, through photo-manipulation, the azo-polymer film is reversibly and reliably transformed among three wetting states, that is, rose-petal-like water-adhesion, lotus-leaf-like rolling isotropy, and rice-leaf-like rolling anisotropy. Furthermore, the smart superhydrophobic surface is employed as a rewritable platform for droplet transportation. As such, our study expands the category of responsive bio-inspired superhydrophobicity and provides a new strategy to design and access superwetting materials.

中文翻译：

具有可控超润湿性的光可切换智能超疏水表面

近年来，具有可控润湿性的响应外部刺激的新一代智能表面受到越来越多的关注。值得注意的是，尚未探索具有可切换润湿性的智能表面，其表现出水粘性、滚动各向同性和滚动各向异性形式之间的轻松过渡。在此，我们报告了通过利用含偶氮苯的记忆聚合物作为基材来制作具有可调微结构和润湿性的超疏水表面。有趣的是，通过光操纵，偶氮聚合物薄膜在三种润湿状态之间可逆且可靠地转变，即玫瑰花瓣状水粘附、荷叶状滚动各向同性和稻叶状滚动各向异性. 此外，智能超疏水表面被用作液滴运输的可重写平台。因此，我们的研究扩展了响应性仿生超疏水性的类别，并提供了一种设计和获取超润湿材料的新策略。

更新日期：2021-09-08

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