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

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Scanning Tunnelling Microscopy
Porphyrins
Scanning tunneling microscopy
Adsorption
Molecules
Temperature
Annealing
Substrates

ASJC Scopus subject areas

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

Cite this

Adsorption, manipulation and self-assembling of TBrPP-Co molecules on a Ag/Si(111) surface by scanning tunnelling microscopy. / Li, Qing; Yamazaki, Shiro; Eguchi, Toyoaki; Hasegawa, Yukio; Kim, Howon; Kahng, Se-Jong; Feng Jia, Jin; Xue, Qi Kun.

In: Nanotechnology, Vol. 19, No. 46, 465707, 19.11.2008.

Research output: Contribution to journalArticle

Li, Qing ; Yamazaki, Shiro ; Eguchi, Toyoaki ; Hasegawa, Yukio ; Kim, Howon ; Kahng, Se-Jong ; Feng Jia, Jin ; Xue, Qi Kun. / Adsorption, manipulation and self-assembling of TBrPP-Co molecules on a Ag/Si(111) surface by scanning tunnelling microscopy. In: Nanotechnology. 2008 ; Vol. 19, No. 46.
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