Center for Synthetic Soft Materials, The Key Laboratory of Functional Polymer Materials of Ministry of Education and Institute of Polymer Chemistry, Nankai University, Tianjin, China.
Langmuir. 2013 May 14;29(19):5714-22. doi: 10.1021/la400802p. Epub 2013 Apr 30.
We report the construction of dumbbell-shaped hybrid molecules for programming their hierarchical supramolecular nanostructures through a synergetic self-assembly. Our first dumbbell-shaped hybrid molecule is a POM-organic-POSS cocluster produced by covalently coupling a POM cluster and a POSS cluster together through an organic tether. Structural analyses demonstrated a highly ordered lamellar morphology with a 4.9 nm periodicity, indicating a strong thermodynamic force driving a nanoscale phase separation of the POM and POSS blocks. The POM clusters were arranged in an orderly fashion within the POM-containing layer with a 1.38 nm periodicity because of fixed shape and size of the cluster. This investigation provides in-depth understanding of how to construct hierarchical supramolecular nanostructures at a nanoscale less than 5 nm by manipulating and controlling the topological shape of hybrid molecules.
我们报告了哑铃形杂化分子的构建，通过协同自组装来编程其分级超分子纳米结构。我们的第一个哑铃形杂化分子是通过共价键将一个多酸簇和一个 POSS 簇连接在一起的 POM-有机-POSS 共聚物。结构分析表明具有 4.9nm 周期性的高度有序层状形态，表明热力学力强烈驱动 POM 和 POSS 块的纳米尺度相分离。由于簇的固定形状和尺寸，多酸簇在含有多酸的层内以 1.38nm 的周期性有序排列。这项研究深入了解了如何通过操纵和控制杂化分子的拓扑形状，在小于 5nm 的纳米尺度上构建分级超分子纳米结构。
