Department of Polymer Science, University of Akron, Akron, OH, 44325, USA.
Key Laboratory of Polymer Chemistry and Physics of the Ministry of Education, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering, Peking University, Beijing, 100871, China.
Angew Chem Int Ed Engl. 2016 Feb 12;55(7):2459-63. doi: 10.1002/anie.201510524. Epub 2016 Jan 15.
Spontaneous formation of concentric lamellae was observed in self-assembling giant surfactants consisting of a fluorinated polyhedral oligomeric silsesquioxane (FPOSS) head and flexible polymer tail(s). Owing to the asymmetrical sizes of the head and tail blocks and the rectangular molecular interface, the giant surfactants assumed a truncated-wedge-like molecular shape, which induced morphological curvature during self-assembly, thus resulting in the formation of curved and concentric lamellae. These curved/concentric lamellae were observed in FPOSS-based giant surfactants with different architectures and compositions. The spontaneous curvature formation not only promotes our fundamental understanding of assembly principles, but also provides a promising and efficient approach to the fabrication of a wide range of high-performance devices.
在由氟化多面体低聚倍半硅氧烷（FPOSS）头和柔性聚合物尾组成的自组装巨型表面活性剂中观察到同心层的自发形成。由于头和尾块的不对称尺寸和矩形分子界面，巨型表面活性剂呈现出截顶楔形分子形状，这在自组装过程中诱导了形态曲率，从而导致了弯曲和同心层的形成。这些弯曲/同心层在具有不同结构和组成的 FPOSS 基巨型表面活性剂中被观察到。自发曲率的形成不仅促进了我们对组装原理的基本理解，而且为制造各种高性能器件提供了一种有前途且高效的方法。
