Nonplanar adsorption and orientational ordering of porphyrin molecules on Au(111)

DOI PDF 被引用文献8件
  • Takashi Yokoyama
    National Institute for Materials Science, 2268-1 Shimo-shidami, Moriyama-ku, Nagoya 463-0003, Japan
  • Shiyoshi Yokoyama
    Communication Research Laboratory, 588-2 Iwaoka, Nishi-ku, Kobe 651-2401, Japan
  • Toshiya Kamikado
    Communication Research Laboratory, 588-2 Iwaoka, Nishi-ku, Kobe 651-2401, Japan
  • Shinro Mashiko
    Communication Research Laboratory, 588-2 Iwaoka, Nishi-ku, Kobe 651-2401, Japan

書誌事項

公開日
2001-08-22
DOI
  • 10.1063/1.1389276
公開者
AIP Publishing

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<jats:p>Saddle-shaped deformation of planar porphyrin molecules is accomplished by rotations of four phenyl-based substituents, which results from optimum adsorption onto Au(111) surface. The nonplanar macrocyclic conformation is clearly visualized by using low-temperature scanning tunneling microscopy and confirmed by molecular orbital calculations. Inside of the supramolecular molecular islands, we find that two different orientations of the nonplanar porphyrins are randomly distributed. An orientational ordering is obtained after short thermal excitations, which should be associated with steric intermolecular interactions between substituents.</jats:p>

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