Self-assembly of PcOC8 and its sandwich lanthanide complex Pr(PcOC8)(2) with oligo(phenylene-ethynylene) molecules.
Self-assembly of PcOC8 and its sandwich lanthanide complex Pr(PcOC8)(2) with oligo(phenylene-ethynylene) molecules.
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DOI：
10.1021/jp052216z
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发表时间：
2005-10
期刊：
影响因子：
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通讯作者：
Zhi-Yong Yang;L. Gan;S. Lei;L. Wan;Chen Wang;Jian-Zhuang Jiang
中科院分区：
文献类型：
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作者：
Zhi-Yong Yang;L. Gan;S. Lei;L. Wan;Chen Wang;Jian-Zhuang Jiang
通过扫描隧道显微镜 (STM) 在高取向热解石墨 (HOPG) 表面上研究了八(辛氧基)酞菁 (PcOC8) 及其夹心稀土配合物、取代镨双 (酞菁) (Pr(PcOC8)(2)) 与低聚亚苯基乙炔基 (OPE) 的自组装。通过将分子溶解在苯辛烷溶液中来制备组件。研究发现PcOC8和Pr(PcOC8)(2)均可在HOPG上形成4倍或6倍对称吸附层。高分辨率STM图像揭示了Pr(PcOC8)(2)分子的分子内结构。当OPE分子添加到苯辛烷溶剂中时，Pr(PcOC8)(2)分子倾向于在OPE吸附层的顶部形成有序吸附层，而PcOC8分子直接吸附在HOPG表面上并与OPE形成分离的域。这些结果可能有助于未来构建表面组件和开发分子电子器件。
Self-assemblies of octakis(octyloxy) phthalocyanine (PcOC8) and its sandwich lanthanide complex, substituted praseodymium bis(phthalocyanine) (Pr(PcOC8)(2)), with oligo(phenylene-ethynylene) (OPE) have been investigated by scanning tunneling microscopy (STM) on a highly oriented pyrolytic graphite (HOPG) surface. The assemblies were prepared by dissolving the molecules in phenyloctane solution. It was found that both PcOC8 and Pr(PcOC8)(2) can form 4-fold or 6-fold symmetrical adlayers on HOPG. The intramolecular structure of Pr(PcOC8)(2) molecule was revealed by a high-resolution STM image. When OPE molecules are added into phenyloctane solvent, Pr(PcOC8)(2) molecules prefer to form an ordered adlayer at the top of the OPE adlayer, while PcOC8 molecules adsorb on HOPG surface directly and form separated domains with OPE. These results may be helpful to construct surface assemblies and develop molecular electronic devices in the future.