From Amphiphilic Organic Ligands to Metal-Coordinated Complexes: Structural Difference in Their Self-Organizations Studied by STM
From Amphiphilic Organic Ligands to Metal-Coordinated Complexes: Structural Difference in Their Self-Organizations Studied by STM
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DOI：
10.1021/jp0670790
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发表时间：
2007-03
影响因子：
3.7
通讯作者：
Shan-shan Li;Zhi-Yong Yang;Cunji Yan;Hui-Juan Yan;L. Wan;P. Guo;Minghua Liu
中科院分区：
文献类型：
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作者：
Shan-shan Li;Zhi-Yong Yang;Cunji Yan;Hui-Juan Yan;L. Wan;P. Guo;Minghua Liu
两亲性有机配体5-十八烷氧基-2-（2-吡啶偶氮）苯酚（PARC 18）和1，10-双[3 '-羟基-4'-（2“”-吡啶偶氮）酚氧基]癸烷（PAR）2C 10与Cu（II）离子配位，生成两种配合物。扫描隧道显微镜（STM）图像提供了直接的结构证据，从有机配体的配位所产生的配合物。在高取向热解石墨（HOPG）表面自组织的STM图像中，可以清楚地看到配体和相应配合物的形貌和构象差异。PARC 18 −Cu和（PAR）2C 10 −Cu配合物的吸附层结构与其相应配体的吸附层结构显著不同。在与PARC 18配体及其络合物形成的吸附层中发现相分离。结果表明，扫描隧道显微镜是配体和配合物分析的有力工具。从配体到金属离子的配合物的配位是一种简单的表面改性和功能化的途径。
Amphiphilic organic ligands, 5-octadecyloxy-2-(2-pyridylazo)phenol (PARC18) and 1,10-bis[3‘-hydroxy-4‘-(2‘ ‘-pyridylazo)phenoloxy]decane (PAR)2C10, are coordinated with Cu(II) ions, resulting in two complexes. Scanning tunneling microscopy (STM) images provide direct structural evidence for the coordination from organic ligands to resulted complexes. The appearance and conformation differences in ligands and corresponding complexes can be clearly seen in STM images recorded from their self-organizations on highly oriented pyrolytic graphite (HOPG). The adlayer structures of PARC18−Cu and (PAR)2C10−Cu complexes are significantly different from those of their corresponding ligands. A phase separation is found in the adlayer formed with the PARC18 ligand and its complex. The results demonstrate that STM is a powerful tool in coordination chemistry in analyzing ligand and coordinated complex. The coordination from ligands to complexes with metal ions would be a facile approach to surface modification and func...