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首页> 外文期刊>Advanced Functional Materials >Supramolecular Nanostructuring of Silver Surfaces via Self-Assembly of [60] Fullerene and Porphyrin Modules
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Supramolecular Nanostructuring of Silver Surfaces via Self-Assembly of [60] Fullerene and Porphyrin Modules

机译：通过[60]富勒烯和卟啉模块的自组装，银表面的超分子纳米结构。

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Recent achievements in our laboratory toward the "bottom-up" fabrication of addressable multicomponent molecular entities obtained by self-assembly of C_(60) and porphyrins on Ag(100) and Ag(111) surfaces are described. Scanning tunneling microscopy (STM) studies on ad-layers constituting monomeric and triply linked porphyrin modules showed that the molecules self-organize into ordered supramolecular assemblies, the ordering of which is controlled by the porphyrin chemical structure, the metal substrate, and the surface coverage. Specifically, the successful preparation of unprecedented two-dimensional porphyrin-based assemblies featuring regular pores on Ag(111) surfaces has been achieved. Subsequent co-deposition of C_(60) molecules on top of the porphyrin monolayers results in selective self-organization into ordered molecular hybrid bilayers, the organization of which is driven by both fullerene coverage and porphyrin structure. In all-ordered fullerene-porphyrin assemblies, the C_(60) guests organize, unusually, into long chains and/or two-dimensional arrays. Furthermore, sublimation of C_(60) on top of the porous porphyrin network reveals the selective long-range inclusion of the fullerene guests within the hosting cavities. The observed mode of the C_(60) self-assembly originates from a delicate equilibrium between substrate-molecule and molecule-molecule interactions involving charge-transfer processes and conformational reorganizations as a consequence of the structural adaptation of the fullerene-porphyrin bilayer.
机译：描述了在我们的实验室中通过“自下而上”制造可寻址多组分分子实体的最新成就，这些分子是通过在Ag（100）和Ag（111）表面上自组装C_（60）和卟啉获得的。扫描隧道显微镜（STM）对构成单体和三联连接的卟啉模块的Ad层的研究表明，分子自组织成有序的超分子组装体，其顺序受卟啉化学结构，金属基质和表面覆盖率的控制。具体而言，已经成功地制备了前所未有的二维基于卟啉的组件，该组件在Ag（111）表面具有规则的孔。随后在卟啉单分子层上共沉积C_（60）分子导致选择性自组织成有序的分子杂化双层，其组织由富勒烯覆盖和卟啉结构共同驱动。在所有有序的富勒烯-卟啉装配中，C_（60）来宾通常会组织成长链和/或二维阵列。此外，C_（60）在多孔卟啉网络顶部的升华揭示了富勒烯客体在宿主腔体内的选择性远距离包容。观察到的C_（60）自组装模式是由于富勒烯-卟啉双层结构的适应性，涉及电荷转移过程和构象重组的底物-分子与分子-分子相互作用之间的微妙平衡。

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