Fabrication of uniform two-dimensional (2D) structures from small molecules remains a formidable challenge for living self-assembly despite its great success in producing uniform one-dimensional (1D) structures. Here, we report the construction of unprecedented uniform 2D platelets with tailorable shapes and controlled sizes by creating new nuclei from a donor–acceptor (D–A) molecule and 1-hexanol to initiate 2D living self-assembly. We demonstrate that the D–A molecule undergoes 1-hexanol-induced twisting to form continuous alternative hydrogen bonds in-between under electrostatic attraction, which in turn forms a new nucleus. This connection architecture of the new nucleus allows to simultaneously regulate the growth rate of 1 in two dimensions to generate 2D platelets of distinct shapes through simply varying the amount of 1-hexanol relative to hexane. Furthermore, the living nature of the new nucleus enables seeded growth of complex concentric multiblock 2D heteroplatelets by sequential and alternative addition of different D–A molecules. Interestingly, the resulting 2D platelets obtained by such living self-assembly exhibit enhanced photostability compared to those obtained by conventional self-assembly without the involvement of 1-hexanol.

中文翻译：

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前所未有的基于小分子的均匀二维血小板，具有可定制的形状和尺寸

尽管在生产均匀的一维（1D）结构方面取得了巨大成功，但从小分子制造均匀的二维（2D）结构仍然是活体自组装的巨大挑战。在这里，我们报告了通过从供体-受体 (D-A) 分子和 1-己醇创建新的核来启动 2D 活体自组装来构建具有可定制形状和可控尺寸的前所未有的均匀 2D 血小板。我们证明 D-A 分子经历 1-己醇诱导的扭曲，在静电引力作用下在其间形成连续的交替氢键，进而形成一个新的原子核。新核的这种连接结构允许同时调节1通过简单地改变 1-己醇相对于己烷的量，在二维中生成不同形状的 2D 薄片。此外，新细胞核的生命特性能够通过顺序和交替添加不同的 D-A 分子来实现复杂的同心多块 2D 异质血小板的种子生长。有趣的是，与通过不涉及 1-己醇的常规自组装获得的那些相比，通过这种活的自组装获得的二维血小板表现出增强的光稳定性。