Effect of the formation of highly ordered platinum(II) octaethylporphyrin adlayer on the surface reconstruction of gold and supramolecular assembly of fullerenes
Effect of the formation of highly ordered platinum(II) octaethylporphyrin adlayer on the surface reconstruction of gold and supramolecular assembly of fullerenes
复制标题
高度有序铂(II)八乙基卟啉吸附层的形成对金表面重构和富勒烯超分子组装的影响
DOI：
10.1021/jp509312d
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发表时间：
2014
影响因子：
3.7
通讯作者：
Teppei Kawamoto
中科院分区：
文献类型：
--
作者：
Soichiro Yoshimoto;Satoi Yasunishi;Teppei Kawamoto
在0.05 M HClO 4溶液中，用原位扫描隧道显微镜（STM）研究了八乙基卟啉铂（PtOEP）在Au（111）和Au（100）表面的二维分子组装结构.原位STM观察表明，PtOEP在双电层区的宽电位范围内吸附，形成高度有序的排列，从而稳定了Au（111）和Au（100）的重构相，PtOEP覆盖层扩大了重构相的稳定电位范围。此外，研究了C60和C84在Au（111）表面形成的高度有序PtOEP吸附层上的超分子组装。STM图像显示的位置选择性的超分子组装的富勒烯，特别是C84，表现出低覆盖率的PtOEP吸附层。C60分子在PtOEP上形成了高度有序的吸附层，而C84分子则表现出无序的排列。研究结果表明，P-Fe ~（2+）的强π电子贡献是P-Fe ~（2+）的主要原因。
The structures of 2D molecular assemblies of platinum(II) octaethylporphyrin (PtOEP) on Au(111) and Au(100) surfaces were examined using in situ scanning tunneling microscopy (STM) in 0.05 M HClO4 solutions. The in situ STM observations revealed that the reconstructed rows of Au(111) and Au(100) were stabilized through the formation of highly ordered arrays by adsorption of PtOEP in a wide potential range of the electric double-layer region and that the PtOEP overlayer expanded the stable potential range for the reconstructed phase. Furthermore, the supramolecular assembly of C60 and C84 on a highly ordered PtOEP adlayer formed on Au(111) surfaces was investigated. STM images revealed site-selective supramolecular assembly of fullerenes, especially C84, which exhibited a low coverage on the PtOEP adlayer. C60 molecules exhibited a full coverage and formed highly ordered adlayers on PtOEP, whereas C84 exhibited disordered arrays. The results of this study showed that the strong π-electron donation by the P...