Segregation of molecular overlayers with different structures on a metal surface

Hitoshi Suzuki, Hideki Miki, Shiyoshi Yokoyama, Shinro Mashiko

Research output: Contribution to journalConference article

10 Citations (Scopus)

Abstract

Segregation of molecular overlayers having different structures depending on the molecular structure was observed by using scanning tunneling microscope in ultra-high vacuum at 77.5 K. Two kinds of molecules, chloro[tri-tert-butyl-subphthalocyaninato]boron(III) (TBSubPc) and phenyl[tri-tert-butyl-subphthalocyaninato]boron(III) (phenyl-TBSubPc), were successively co-deposited on an Au (111) surface. Two different overlayer structures were clearly identified: a honeycomb lattice consisting of phenyl-TBSubPc molecules and a quasi-hexagonal lattice consisting of TBSubPc molecules. This behavior suggests that the molecules can interact strongly with the same molecules to form their own overlayer structure. The difference in the central part of the molecular structures affects the intermolecular interaction resulting in the segregation of molecular overlayers.

Original languageEnglish
Pages (from-to)97-100
Number of pages4
JournalThin Solid Films
Volume438-439
DOIs
Publication statusPublished - Aug 22 2003
EventThe 5th International Conference on Nano-Molecular Electronics - Kobe, Japan
Duration: Dec 10 2002Dec 12 2002

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metal surfaces
Metals
Boron
Molecules
boron
molecules
Molecular structure
molecular structure
Ultrahigh vacuum
ultrahigh vacuum
Microscopes
microscopes
Scanning
scanning
interactions

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Segregation of molecular overlayers with different structures on a metal surface. / Suzuki, Hitoshi; Miki, Hideki; Yokoyama, Shiyoshi; Mashiko, Shinro.

In: Thin Solid Films, Vol. 438-439, 22.08.2003, p. 97-100.

Research output: Contribution to journalConference article

Suzuki, Hitoshi ; Miki, Hideki ; Yokoyama, Shiyoshi ; Mashiko, Shinro. / Segregation of molecular overlayers with different structures on a metal surface. In: Thin Solid Films. 2003 ; Vol. 438-439. pp. 97-100.
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AB - Segregation of molecular overlayers having different structures depending on the molecular structure was observed by using scanning tunneling microscope in ultra-high vacuum at 77.5 K. Two kinds of molecules, chloro[tri-tert-butyl-subphthalocyaninato]boron(III) (TBSubPc) and phenyl[tri-tert-butyl-subphthalocyaninato]boron(III) (phenyl-TBSubPc), were successively co-deposited on an Au (111) surface. Two different overlayer structures were clearly identified: a honeycomb lattice consisting of phenyl-TBSubPc molecules and a quasi-hexagonal lattice consisting of TBSubPc molecules. This behavior suggests that the molecules can interact strongly with the same molecules to form their own overlayer structure. The difference in the central part of the molecular structures affects the intermolecular interaction resulting in the segregation of molecular overlayers.

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