Molecular recognition based on hydrogen bond interaction plays a significant role in supramolecular self-assembly. In this work, we successfully developed a class of novel frameworks containing a urea in the recognition site and a carboxylate anion in the guest unit. The self-recognition model based on the interaction between urea and carboxylate anion could induce the molecules to assemble into a highly organized form. The crystal structures showed that they assembled in highly ordered two-dimensional architectures. The optical properties showed that the position of carboxylate anion on the diphenylacetylene backbone had an obvious influence on optical properties. The self-recognition strategy is useful for the construction of highly ordered self-assembled architectures.

基于氢键相互作用的分子识别在超分子自组装中起重要作用。在这项工作中，我们成功开发出一类新颖的骨架，在识别位点中包含尿素，在来宾单元中包含羧酸根阴离子。基于尿素和羧酸根阴离子之间相互作用的自我识别模型可以诱导分子组装成高度有组织的形式。晶体结构表明它们以高度有序的二维结构组装。光学性质表明，羧酸根阴离子在二苯乙炔主链上的位置对光学性质有明显的影响。自我识别策略对于构建高度有序的自组装体系结构很有用。