Network of tris(porphyrinato)cerium(III) arranged on the herringbone structure of an Au(111) surface.
Network of tris(porphyrinato)cerium(III) arranged on the herringbone structure of an Au(111) surface.
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DOI：
10.1021/la902019s
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发表时间：
2010-01
期刊：
影响因子：
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通讯作者：
Hiroyuki Tanaka;T. Ikeda;Kousei Yamashita;M. Takeuchi;S. Shinkai;T. Kawai
中科院分区：
文献类型：
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作者：
Hiroyuki Tanaka;T. Ikeda;Kousei Yamashita;M. Takeuchi;S. Shinkai;T. Kawai
通过脉冲注入沉积的方法在Au(111)表面形成了三(卟啉)Ce(III)三层(TD)络合物网络。用超高真空扫描隧道显微镜(UHV-STM)观察了其结构。高分辨率的UHV-STM图像揭示了TD网络结构的细节以及联噻吩基和卟啉基团的内部结构，表明TD络合物发生了面对面的吸附。这些联噻吩烷基链不仅使TD分子在有机溶剂中溶解，而且在阻止它们与Au底物之间形成键而使卟啉分子表面垂直于底物方面起到了关键作用。这些结果表明，噻吩基可以用来控制分子在Au(111)表面人字形结构上的吸附和组装。
A network of bithiophene-modified tris(porphyrinato)cerium(III) triple-decker (TD) complexes was formed by pulse injection depositing on the Au(111) surface. The structure was observed with ultrahigh vacuum scanning tunneling microscopy (UHV-STM). High resolution UHV-STM images revealed the details of network structure of TD and the internal structure of both bithiophene and porphyrin moieties, indicating that the TD complexes undergo face-on adsorption. The alkyl chains on these bithiophenes not only make the TD molecules soluble in organic solvents, but also play a key role in preventing them from forming bonds between the thiophenes and the Au substrate, which enables the porphyrin molecular surface to be perpendicular to the substrate. These results suggest that the thiophene moiety can be used to control the adsorption and assembly of molecules on the herringbone structure of the Au(111) surface.