Segregation of molecular overlayers with different structures on a metal surface

Hitoshi Suzuki, Hideki Miki, Shiyoshi Yokoyama, Shinro Mashiko

Research output: Contribution to journalConference articlepeer-review

11 Citations (Scopus)


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
Publication statusPublished - Aug 22 2003
Externally publishedYes
EventThe 5th International Conference on Nano-Molecular Electronics - Kobe, Japan
Duration: Dec 10 2002Dec 12 2002

All Science Journal Classification (ASJC) codes

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


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