Supramolecular Anisotropy in a Surface-Confined Bicomponent System
Supramolecular Anisotropy in a Surface-Confined Bicomponent System
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DOI：
10.1021/acs.jpcc.2c07707
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发表时间：
2022-11
期刊：
影响因子：
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通讯作者：
Xiaojie Wen;Jie Li;Yuxuan Lin;Mengxiao Diao;Wenhui Zhao;Bin Di;Zhantao Peng;Dan Liu;
中科院分区：
文献类型：
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作者：
Xiaojie Wen;Jie Li;Yuxuan Lin;Mengxiao Diao;Wenhui Zhao;Bin Di;Zhantao Peng;Dan Liu;
表面限制超分子的各向异性工程提供了一种潜在的方法来精确调整低维分子纳米材料的性质和性能。在这里，我们报告了一个表面限制的双组分超分子结构的特点，结构各向异性相结合的扫描隧道显微镜和密度泛函理论研究的建设。corannulene与钛氧酞菁或铜酞菁形成的一维超分子带仅沿Ag（111）上的等效方向沿着延伸。这种超分子各向异性被证明是分子-基底可折叠性和分子间相互作用弛豫的综合效应的结果，这导致超分子带在Ag（111）上相称生长的取向依赖的能量成本。这些发现提供了深入的了解之间的分子-底物和分子间相互作用的超分子结构的精细平衡的调解作用，提供了一个有效的方法，超分子各向异性工程。
Anisotropical engineering of surface-confined supramolecules provides a potential approach to precisely tweaking the properties and performance of low-dimensional molecular nanomaterials. Here, we report the construction of a surface-confined bicomponent supramolecular structure that features structural anisotropy by combined scanning tunneling microscopy and density functional theory studies. One-dimensional supramolecular ribbons formed by corannulene with either titanyl phthalocyanine or copper phthalocyanine exclusively extend along the equivalent ⟨11̅0⟩ directions on Ag(111). Such a supramolecular anisotropy is demonstrated as a result of the combined effects of molecule–substrate commensurability and intermolecular interaction relaxation, which leads to orientation-dependent energy cost for commensurate growth of the supramolecular ribbon on Ag(111). These findings provide insights into the mediation effect of the fine balance between the molecule–substrate and intermolecular interactions on the supramolecular structures, offering an efficient methodology for supramolecular anisotropical engineering.