作者:Shuguo An、Aiyou Hao、Pengyao Xing
DOI:10.1002/anie.202100044
日期:2021.4.26
oligosilsesquioxane (POSS) derivatives that self‐assemble into well‐defined chiral nanoassemblies. POSSs were covalently conjugated to N‐terminal aromatic amino acids, which self‐assembled into nanohelices and twists with explicit handedness tuned by solvent polarity. Chiral nanoassemblies showed active chiroptical responses including Cotton effects and circularly polarized luminescence. The chiral systems can bind
将具有原子精度的巨型分子纳米粒子并入手性纳米组件中,有助于制造具有超分子手性的功能性有序相,这仍然是个谜。此处报道的是多面体低聚倍半硅氧烷(POSS)衍生物的第一个实例,该衍生物可自组装为定义良好的手性纳米组件。POSS共价键合至N末端芳香族氨基酸,后者自组装成纳米螺旋,并通过溶剂极性调整了明确的手性而扭曲。手性纳米组装体表现出积极的手性反应,包括棉花效应和圆偏振发光。手性体系可以通过电荷转移相互作用结合客体分子,从而进一步调节了自组装结构,手性活性和发光颜色。独特的组装系统应用于即时信息加密和具有多个发光显示器的存储。这项工作为通过分子自组装设计POSS功能性手性材料提供了新的协议。