文献类型：期刊文献

英文题名：Morphologically and Functionally Tunable Nanostructures Self-Assembled from Azopyridine-Containing Block Copolymers

作者：Wang, Yuqing[1];Guo, Wanjun[1];Jia, Shiqing[1];Tao, Xinfeng[1];Xu, Binbin[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

年份：2025

卷号：35

期号：29

外文期刊名：ADVANCED FUNCTIONAL MATERIALS

收录：;EI(收录号：20251118022199);WOS:【SCI-EXPANDED(收录号:WOS:001435944400001)】；

基金：Y.W. and W.G. contributed equally to this work. The authors are thankful for financial support from National Science Foundation for Distinguished Young Scholars (52325308), National Natural Science Foundation of China (52273008 and 52473005), Shanghai Scientific and Technological Innovation Project (22ZR1479300), and Shanghai Rising-Star Program (23QA1402500).

语种：英文

外文关键词：azopyridine; coassembly; fluorescence detection; hierarchical structures; liquid crystals

摘要：Hierarchical structures with enhanced performances are of growing importance in many fields, but their preparation suffers from tedious and multistep procedures. There remain challenges to transfer and magnify the molecular functions in hierarchical structures to pursue more unique applications. Herein, a facile one-step approach for the fabrication of hierarchical structures assembling from amphiphilic copolymers, poly(ethylene glycol)-block-poly(6-(4-(4-pyridyazo)phenoxy)hexyl methacrylate) (PEG-b-PAzoPy) with controlled morphologies and enhanced functions, is reported. Various hierarchical structures including three-dimensional raspberry-like assemblies, worm networks (WNs), and large compound vesicles are obtained through a heating-cooling-aging process in THF/ethanol. The fluorescence detection of p-nitrophenol at ultralow concentrations (10(-12) m) is realized by the formation of nonfluorescent nitrophenol-WNs complexes, taking advantage of the high surface area and unique cavities of WNs. Furthermore, a highly efficient nanofiltration composite membrane is constructed by assembling WNs on the surface of a commercial polypropylene membrane. More interestingly, using simple 2H,2H,3H,3H-perfluoroundecanoic acid as the H-bond donor and PEG-b-PAzoPy as the acceptor, they can form H-bond complexes and further assemble into nanowires with highly ordered liquid crystalline stripes. This study not only offers a facile strategy for the design of hierarchical structures but also facilitates the application of advanced hierarchical materials in various fields.