Tertiary Chiral Domains Assembled by Achiral Metal-Organic Complexes on Cu(110)
Tertiary Chiral Domains Assembled by Achiral Metal-Organic Complexes on Cu(110)
复制标题
Cu(110)上非手性金属有机配合物组装的三级手性结构域
DOI：
10.1021/jp101439z
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发表时间：
2010-07
影响因子：
3.7
通讯作者：
Costantini, Giovanni
中科院分区：
文献类型：
--
作者：
Fabris, Stefano;Kern, Klaus;Wang, Yeliang;Costantini, Giovanni
本文报道了对苯二甲酸（TPA）和铁在Cu（110）表面自组装形成的手性结构域。使用扫描隧道显微镜，我们观察到的超分子结构上组织连续的层次结构。手性的发展，只有在最新的组装步骤，与初级TPA成分和二级二铁-对苯二甲酸金属有机配合物是镜像对称的。生成这些高阶手性结构的驱动力被确定为金属有机络合物内的竞争配位键合和它们之间的氢键。扩展的金属有机网络的出现受到与基底的不可渗透性的阻碍。
We report on the formation of chiral domains self-assembled from terephthalic acid (TPA) and iron on a Cu(110) surface. Using scanning tunnelling microscopy, we observe that the supramolecular structures are organized on successive hierarchical levels. Chirality develops only at the latest assembly step, with the primary TPA constituents and the secondary diiron-terephthalate metal-organic complexes being mirror symmetric. The driving forces for the generation of these high-order chiral architectures are identified as competing coordination bonding within the metal-organic complexes and hydrogen bonding among them. The emergence of extended metal-organic networks is hindered by the incommensurability with the substrate.