The unique corona structure of surface-compartmentalized micelles (Janus micelles, patchy micelles) opens highly relevant applications, e.g. as efficient particulate surfactants for emulsion stabilization or compatibilization of polymer blends. Here, stereocomplex-driven self-assembly (SCDSA) as a facile route to micelles with a semicrystalline stereocomplex (SC) core and a patch-like microphase separated corona, employing diblock copolymers with enantiomeric poly(L-lactide)/poly(D-lactide) blocks and highly incompatible corona-forming blocks (polystyrene (PS), poly(tert-butyl methacrylate)) is introduced. The spherical patchy SC micelles feature a narrow size distribution and show a compartmentalized, shamrock-like corona structure. Compared to SC micelles with a homogeneous PS corona the patchy micelles have a significantly higher interfacial activity attributable to the synergistic combination of an amphiphilic corona with the Pickering effect of nanoparticles. The patchy micelles are successfully employed in the stabilization of emulsions, underlining their application potential.

中文翻译：

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通过立体复合物驱动的自组装进行表面分隔的胶束

表面分隔的胶束（Janus 胶束、片状胶束）的独特电晕结构开启了高度相关的应用，例如作为高效的颗粒表面活性剂用于聚合物共混物的乳液稳定或相容化。在这里，立体复合物驱动的自组装 (SCDSA) 作为一种简便的途径来制备具有半结晶立体复合物 (SC) 核心和贴片状微相分离电晕的胶束，采用具有对映体聚 (L-丙交酯)/聚 (D-)的二嵌段共聚物丙交酯）块和高度不相容的电晕形成块（聚苯乙烯（PS），聚（叔-引入甲基丙烯酸丁酯))。球形斑片状 SC 胶束具有狭窄的尺寸分布，并显示出分隔的三叶草状冠状结构。与具有均匀 PS 电晕的 SC 胶束相比，片状胶束具有明显更高的界面活性，这归因于两亲性电晕与纳米粒子的皮克林效应的协同组合。片状胶束成功地用于乳液的稳定，突出了它们的应用潜力。