Adsorption, manipulation and self-assembling of TBrPP-Co molecules on a Ag/Si(111) surface by scanning tunnelling microscopy

Qing Li, Shiro Yamazaki, Toyoaki Eguchi, Yukio Hasegawa, Howon Kim, Se Jong Kahng, Jin Feng Jia, Qi Kun Xue

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Individual adsorption and two-dimensional assembling of 5,10,15,20-tetrakis-(4-bromophenyl)-porphyrin-Co (TBrPP-Co) molecules on a Si(111)- 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 ( 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).

Original languageEnglish
Article number465707
JournalNanotechnology
Volume19
Issue number46
DOIs
Publication statusPublished - 2008 Nov 19
Externally publishedYes

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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    Li, Q., Yamazaki, S., Eguchi, T., Hasegawa, Y., Kim, H., Kahng, S. J., Feng Jia, J., & Xue, Q. K. (2008). Adsorption, manipulation and self-assembling of TBrPP-Co molecules on a Ag/Si(111) surface by scanning tunnelling microscopy. Nanotechnology, 19(46), [465707]. https://doi.org/10.1088/0957-4484/19/46/465707