title: Adsorption, manipulation and self-assembling of TBrPP-Co molecules on a Ag/Si(111) surface by scanning tunnelling microscopy.
abstract: Individual adsorption and two-dimensional assembling of 5,10,15,20-tetrakis-(4-bromophenyl)-porphyrin-Co (TBrPP-Co) molecules on a Si(111)-[Formula: see text] Ag reconstructed surface have been studied using low-temperature scanning tunnelling microscopy (STM). All the isolated molecules are observed in a planar shape with slight distortion. The isolated molecules can be controllably rotated with an STM tip to the orientation along the trigonal lattice ([Formula: see text] direction) of the substrate. With an increased coverage (0.07 ML) and appropriate annealing, the molecules assemble to form three types of ordered phase. The long-range ordered structures, however, disappear at higher coverage (0.75 ML).
authors.affiliation: The Institute for Solid State Physics, The University of Tokyo, 5-1-5, Kashiwa-no-ha, Kashiwa 277-8581, Japan. Institute of Physics, Chinese Academy of Science, Beijing 100080, People's Republic of China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Li
authors.forename: Shiro
authors.initials: S
authors.lastname: Yamazaki
authors.forename: Toyoaki
authors.initials: T
authors.lastname: Eguchi
authors.forename: Yukio
authors.initials: Y
authors.lastname: Hasegawa
authors.forename: Howon
authors.initials: H
authors.lastname: Kim
authors.forename: Se-Jong
authors.initials: SJ
authors.lastname: Kahng
authors.forename: Jin
authors.initials: J
authors.lastname: Feng Jia
authors.forename: Qi Kun
authors.initials: QK
authors.lastname: Xue