Lu Jie, Yu Shengsheng, Li Zhaohua, Lee Myongsoo, Yang Yuntian, Jin Long Yi
Department of Chemistry, Yanbian University, Yanji 133002, P. R. China.
Department of Chemistry, Shandong University of Technology, Zibo 255000, P. R. China.
Soft Matter. 2020 Mar 4;16(9):2224-2229. doi: 10.1039/d0sm00018c.
Controlling the morphology of rod-coil molecular aggregates is crucial for studying and obtaining functional materials with exceptional properties. In this paper, we report the construction of rod-coil molecular nanoaggregates with well-defined structures. The rod-coil molecules, labeled 1a-1d, consist of a rod section, composed of phenyl and biphenyl groups, and oligoether chains with 7 and 12 repeating units. The final assembled structures showed either oblique or hexagonal columnar structures, depending on the length of the coils in the bulk state. Interestingly, in water, molecules 1a and 1c self-assemble into scrolled nanofibers and cylindrical micelles. Instead, molecules 1b and 1d, which have methyl groups decorated at the interface of the rod and coil sections, self-organize into helical nanofibers and nanorings, respectively. Thus, controlling the length of the coil chains and inserting lateral methyl groups is an effective strategy to construct precise rod-coil molecular assemblies in the bulk and in aqueous solution.
控制棒-线圈分子聚集体的形态对于研究和获得具有优异性能的功能材料至关重要。在本文中，我们报道了具有明确结构的棒-线圈分子纳米聚集体的构建。标记为1a-1d的棒-线圈分子由一个由苯基和联苯基组成的棒状部分以及具有7个和12个重复单元的低聚醚链组成。最终的组装结构根据本体状态下线圈的长度呈现出倾斜或六方柱状结构。有趣的是，在水中，分子1a和1c自组装成卷曲的纳米纤维和圆柱形胶束。相反，在棒状和线圈状部分的界面处带有甲基修饰的分子1b和1d分别自组装成螺旋纳米纤维和纳米环。因此，控制线圈链的长度并插入侧向甲基是在本体和水溶液中构建精确的棒-线圈分子组装体的有效策略。
