文献类型：期刊文献

英文题名：Light-Driven Transformation of Bio-Inspired Superhydrophobic Structure via Reconfigurable PAzoMA Microarrays: From Lotus Leaf to Rice Leaf

作者：Gao, Fei[1];Yao, Yuan[1];Wang, Wei[1];Wang, Xiaofan[1];Li, Lei[2];Zhuang, Qixin[1];Lin, Shaoliang[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China;[2]Xiamen Univ, Coll Mat, Xiamen 621005, Peoples R China

年份：2018

卷号：51

期号：7

起止页码：2742

外文期刊名：MACROMOLECULES

收录：;EI(收录号：20181605011120);WOS:【SCI-EXPANDED(收录号:WOS:000430022000035)】；

基金：This work was supported by National Natural Science Foundation of China (51622301, 51573046, and 51573088). Support from Projects of Shanghai Municipality (14SG29 and 17JC400700), Natural Science Foundation of Fujian Province (2014J07002), and Fundamental Research Funds for the Central Universities (222201717001 and WD1616010) is also appreciated.

语种：英文

外文关键词：Free energy - Polarization - Gold nanoparticles - Self assembly - Biomimetics - Hydrophobicity - Water conservation

摘要：Light-driven transformation from isotropic super hydrophobicity to anisotropic superhydrophobicity was accomplished through bio-inspired modification and reconfiguration on poly[6-(4-methoxy-4'-oxyazobenzene)hexyl methacrylate] (PA-zoMA) microarrays. In this study, ordered PAzoMA microarray film was fabricated via the reverse breath figure (RBF) method. After gold nanoparticles sputtering and subsequent modification with self-assembly of 1H,1H,2H,2H-perfluorodecanethiol (FSH), the obtained lotus-leaf-inspired film showed isotropic super hydrophobicity with self-cleaning property due to the hierarchical structure and low surface free energy. Upon irradiation with linearly polarized light (LPL), the microspheres were elongated along the direction of polarization and exhibited anisotropic superhydrophobicity resembling rice leaf. With the increase of illumination time, the axis ratio became larger, and anisotropy sliding was more obvious. This research enriches responsive bioinspired superhydrophobicity and further provides a promising candidate for smart water harvesting.