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Zinc bridled chiroporphyrin (ZnBCP-8) molecules on a rutile titanium dioxide (TiO 2 )(110)–(1×1) surface were successfully observed by scanning tunneling microscopy (STM) under ultrahigh vacuum conditions. The molecules were selectively adsorbed on the surface apparently due to a molecule–substrate interaction. The origin of the interaction is thought to be Coulomb force between molecule and oxygen vacancy on the TiO 2 surface. STM imaging revealed a selective molecular orientation on the TiO 2 (110)–(1×1) structure. These results support the possibility of manipulating molecules on the surface and constructing well designed molecular structures by controlling the molecular–substrate and intermolecular interactions.
Kobe Advanced ICT Research Center, National Institute of Information and Communications Technology (NICT), 588-2 Iwaoka, Nishi-ku, Kobe 651-2492, Japan
Kobe Advanced ICT Research Center, National Institute of Information and Communications Technology (NICT), 588-2 Iwaoka, Nishi-ku, Kobe 651-2492, Japan
Kobe Advanced ICT Research Center, National Institute of Information and Communications Technology (NICT), 588-2 Iwaoka, Nishi-ku, Kobe 651-2492, Japan