Smart Anisotropic Wetting Surfaces with Reversed pH-Responsive Wetting Directions

doi:10.1002/adfm.201802001

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	Smart Anisotropic Wetting Surfaces with Reversed pH-Responsive Wetting Directions
	Ge, P.; Zhang, J. L.; Liu, Y. S.; Wang, S. L.; Liu, W. D.; Yu, N. Z.; Wu, Y. X.; Zhang, J. H.; Yang, B.
	2018
发表期刊	Advanced Functional Materials
ISSN	1616-301X
卷号	28 期号:29 页码:9
摘要	Smart pH-responsive surfaces that could autonomously induce unidirectional wetting of acid and base with reversed directions are fabricated. The smart surfaces, consisting of chemistry-asymmetric Janus silicon cylinder arrays (Si-CAs), are prepared by precise modification of functional groups on each cylinder unit. Herein, amino and carboxyl groups are chosen as typical pH-responsive groups, owing to their protonation/deprotonation effect in response to pH of the contacted aqueous solution. One side of the Si-CAs is modified by poly(2-(dimethylamino)ethyl methacrylate), while the other side is modified by mixed self-assembled monolayers of 1-dodecanethiol and 11-mercaptoundecanoic acid. On such surfaces, it is observed that acid and base wet in a unidirectional manner toward corresponding directions that are modified by amino or carboxyl groups, which is caused by asynchronous change of wetting property on two sides of the asymmetric structures. The as-prepared Janus surfaces could regulate the wetting behavior of acid and base and could direct unidirectional wetting of water with reversed directions when the surfaces are treated by strong acid or base. Due to the excellent response capability, the smart surfaces are potential candidates to be applied in sensors, microfluidics, oil/water separation, and smart interfacial design.
关键词	anisotropic wetting asymmetric structures pH-responsive materials protonation/deprotonation effects self-assembled monolayers super-hydrophobicity wettability arrays superhydrophobicity fabrication hydrogels release liquids motion Chemistry Science & Technology - Other Topics Materials Science Physics
DOI	10.1002/adfm.201802001
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/61152
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Ge, P.,Zhang, J. L.,Liu, Y. S.,et al. Smart Anisotropic Wetting Surfaces with Reversed pH-Responsive Wetting Directions[J]. Advanced Functional Materials,2018,28(29):9.
APA	Ge, P..,Zhang, J. L..,Liu, Y. S..,Wang, S. L..,Liu, W. D..,...&Yang, B..(2018).Smart Anisotropic Wetting Surfaces with Reversed pH-Responsive Wetting Directions.Advanced Functional Materials,28(29),9.
MLA	Ge, P.,et al."Smart Anisotropic Wetting Surfaces with Reversed pH-Responsive Wetting Directions".Advanced Functional Materials 28.29(2018):9.

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