Gu Pei-Yang, Xie Ganhua, Kim Paul Y, Chai Yu, Wu Xuefei, Jiang Yufeng, Xu Qing-Feng, Liu Feng, Lu Jian-Mei, Russell Thomas P
College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation, Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, China.
Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA.
Angew Chem Int Ed Engl. 2021 Feb 8;60(6):2871-2876. doi: 10.1002/anie.202012742. Epub 2020 Dec 9.
Locking nonequilibrium shapes of liquids into targeted architectures by interfacial jamming of nanoparticles is an emerging area in material science. 5,10,15,20-tetrakis(4-sulfonatophenyl) porphyrin (H TPPS) shows three different aggregation states that present an absorption imaging platform to monitor the assembly and jamming of supramolecular polymer surfactants (SPSs) at the liquid/liquid interface. The interfacial interconversion of H TPPS, specifically H TPPS dissolved in water, from J- to an H-aggregation was induced by strong electrostatic interactions with amine-terminated polystyrene dissolved in toluene at the water/toluene interface. This resulted in color-tunable liquids due to interfacial jamming of the SPSs formed between H TPPS and amine-terminated polystyrene. However, the formed SPSs cannot lock in nonequilibrium shapes of liquids. In addition, a self-wrinkling behavior was observed when amphiphilic triblock copolymers of PS-block-poly(2-vinylpyridine)-block-poly(ethylene oxide) were used to interact with H TPPS . Subsequently, the SPSs formed can lock in nonequilibrium shapes of liquids.
通过纳米颗粒的界面堵塞将液体的锁定非平衡形状转变为目标结构是材料科学中一个新兴的领域。5,10,15,20-四（4-磺基苯基）卟啉（H TPPS）呈现出三种不同的聚集状态，这为监测超分子聚合物表面活性剂（SPSs）在液/液界面的组装和堵塞提供了一个吸收成像平台。H TPPS，特别是溶解在水中的H TPPS，在水/甲苯界面与溶解在甲苯中的胺基封端聚苯乙烯发生强烈的静电相互作用，从而诱导其从J聚集转变为H聚集。由于H TPPS与胺基封端聚苯乙烯之间形成的SPSs的界面堵塞，这导致了颜色可调的液体。然而，形成的SPSs不能锁定液体的非平衡形状。此外，当使用PS-嵌段-聚（2-乙烯基吡啶）-嵌段-聚（环氧乙烷）的两亲性三嵌段共聚物与H TPPS相互作用时，观察到了自褶皱行为。随后，形成的SPSs可以锁定液体的非平衡形状。
