Dependence of molecular recognition of fullerene derivative on the adlayer structure of zinc octaethylporphyrin formed on Au(100) surface.
Dependence of molecular recognition of fullerene derivative on the adlayer structure of zinc octaethylporphyrin formed on Au(100) surface.
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DOI：
10.1021/jp051112l
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发表时间：
2005-05
期刊：
影响因子：
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通讯作者：
Soichiro Yoshimoto;Yosuke Honda;Y. Murata;M. Murata;K. Komatsu;O. Ito;K. Itaya
中科院分区：
文献类型：
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作者：
Soichiro Yoshimoto;Yosuke Honda;Y. Murata;M. Murata;K. Komatsu;O. Ito;K. Itaya
用苯溶液浸渍法在重构的Au（100）-（hex）和未重构的Au（100）-（1 × 1）表面制备了ZnOEP吸附层，并用扫描隧道显微镜（STM）表征了吸附层的结构。在Au（100）-（hex）表面上形成六边形排列的ZnOEP阵列，而在Au（100）-（1 × 1）表面上发现矩形排列的ZnOEP阵列。ZnOEP的吸附层结构取决于底层的Au原子排列。此外，通过使用开笼C（60）衍生物（开C（60））对这些改性表面的spuramolecular组装进行了研究。在Au（100）-（hex）表面形成了C（60）/ZnOEP（1：1）的超分子组装吸附层，而在ZnOEP修饰的Au（100）-（1 × 1）表面发现了C（60）的聚集体。开放的C（60）的电化学响应显着影响底层ZnOEP阵列。这一发现表明，精确控制具有Au原子结构的底层ZnOEP吸附层对于识别其上的开放C（60）是重要的。
Adlayers of ZnOEP were prepared on reconstructed Au(100)-(hex) and unreconstructed Au(100)-(1 x 1) surfaces by immersing into a benzene solution containing ZnOEP molecules, and the adlayer structures were characterized by scanning tunneling microscopy (STM). A hexagonally arranged ZnOEP array was formed on an Au(100)-(hex) surface, whereas a rectangularly arranged ZnOEP array was found on an Au(100)-(1 x 1) surface. The adlayer structure of ZnOEP was dependent upon the underlying Au atomic arrangements. Furthermore, an investigation of the spuramolecular assembly for these modified surfaces was carried out by using an open-cage C(60) derivative (opened C(60)). A supramolecular assembled adlayer with a 1:1 composition of opened C(60)/ZnOEP was formed on Au(100)-(hex), whereas aggregates of opened C(60) were found on the ZnOEP-modified Au(100)-(1 x 1) surface. Electrochemical responses of opened C(60) were significantly influenced by underlying ZnOEP arrays. This finding suggests that precise control of underlying ZnOEP adlayers with the Au atomic structure is important to recognize the opened C(60) on them.