文献类型：期刊文献

英文题名：Pillararene-based supramolecular membranes with the rose-petal effect and nanostructure-modulated tunable water adhesion

作者：Li, Jinjie[1];Dong, Jinhui[1];Cui, Kun[2];Wang, He[1];Sun, Yao[1];Yao, Yuan[1];Chen, Jianzhuang[1];Gu, Jinlou[1];Lin, Shaoliang[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat, Minist Educ,Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Key Lab Synthet & Self Assembly Chem Organ Funct, Shanghai Inst Organ Chem, Shanghai 200032, Peoples R China

年份：2020

卷号：8

期号：21

起止页码：10917

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20202308800609);WOS:【SCI-EXPANDED(收录号:WOS:000538143000028)】；

基金：This work was supported by the National Natural Science Foundation of China [grant numbers 51873061, 91834301, 51573046, and 21404039]; the Projects of Shanghai Municipality [grant numbers 19JC1411700, 18JC1410802, 18ZR1408200, and 17JC400700]; and the Key Laboratory of Synthetic and SelfAssembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences [grant number K2018-3]. The authors are grateful to Dr Yingjie Ma from the National Center for Nanoscience and Technology and Dr Peifa Wei from the Hong Kong University of Science and Technology for their great help and useful discussions in this work.

语种：英文

外文关键词：Adhesion - Materials handling - Coatings - Polyethylenes - Nanosheets - Polyethylene glycols - Polyethylene oxides - Pore size - Supramolecular chemistry - Swelling - Functional materials - Surface roughness

摘要：The ability to craft supramolecular membranes with the rose-petal effect in a simple yet rapid manner represents an important endeavor towards creating functional materials and devices for use in anti-icing, controlled transportation of fluids, material coating, etc. Herein, we report a robust strategy for crafting a pillararene-based supramolecular membrane possessing the rose-petal effect via judiciously integrating electrospraying with the breath figure approach. Specifically, polypseudorotaxane (PPR), a complex of an amphiphilic triblock copolymer (PCL-b-PEG-b-PCL) and 1,4-diethoxypillar[5]arene (DEP5A), is designed and subsequently exploited for creating such a smart membrane. Notably, the membrane comprises multi-layered honeycomb nanosheets (denoted as HNM) with an average pore size of approximately 80 nm and is promising for trace liquid transportation and material coating. Furthermore, the swelling of the amphiphilic copolymer in ethanol and the competitive guest-responsiveness of PPR enable the formation of the folded nanosheet membrane (FNM), the papillae-nanosheet membrane (PNM) and the leaf-nanosheet membrane (LNM) from the HNM, respectively. Intriguingly, despite the fact that all the membranes exhibit superhydrophobicity, the FNM, PNM and LNM manifest significantly different water adhesion forces compared to the HNM. These results reveal that the water adhesion forces of these membranes depend heavily on the surface roughness induced by the nanostructures of the nanosheets.