Yoshimoto Soichiro, Honda Yosuke, Murata Yasujiro, Murata Michihisa, Komatsu Koichi, Ito Osamu, Itaya Kingo
Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-04 Aoba, Sendai 980-8579, Japan.
J Phys Chem B. 2005 May 12;109(18):8547-50. doi: 10.1021/jp051112l.
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.
通过将其浸入含有ZnOEP分子的苯溶液中，在重构的Au(100)-(hex)和未重构的Au(100)-(1×1)表面上制备了ZnOEP的吸附层，并通过扫描隧道显微镜(STM)对吸附层结构进行了表征。在Au(100)-(hex)表面上形成了六边形排列的ZnOEP阵列，而在Au(100)-(1×1)表面上发现了矩形排列的ZnOEP阵列。ZnOEP的吸附层结构取决于底层的Au原子排列。此外，通过使用开笼式C(60)衍生物(开孔C(60))对这些修饰表面的超分子组装进行了研究。在Au(100)-(hex)上形成了开孔C(60)/ZnOEP组成为1:1的超分子组装吸附层，而在ZnOEP修饰的Au(100)-(1×1)表面上发现了开孔C(60)的聚集体。开孔C(60)的电化学响应受到底层ZnOEP阵列的显著影响。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孔C(60)很重要。
