Orbital Interactions between a C 60 Molecule and Cu(111) Surface

Atsushi Ogawa, Masamitsu Tachibana, Masakazu Kondo, Kazunari Yoshizawa, Hiroshi Fujimoto, Roald Hoffmann

研究成果: ジャーナルへの寄稿記事

9 引用 (Scopus)

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C-Cu orbital interactions between a two-layer Cu 10 or three-layer Cu 34 cluster model of a Cu(111) surface and an adsorbed single C 60 molecule have been theoretically investigated, so as to elucidate the nature of the C 60-Cu(111) bonding and orientational configuration of the C 60 molecule on a Cu surface. Geometry optimizations and single-point calculations at the B3LYP/LanL2MB level of theory and fragment molecular orbital (FMO) analyses, coupled with a paired-interaction-orbital (PIO) scheme at the extended Hückel level of theory, have been performed for five symmetric adsorption models, in which a C 60 molecule is attached to the Cu 10 or Cu 34 cluster respectively by a six-membered ring (6-ring), by a five-membered ring (5-ring), by a C-C bond belonging to two 6-rings (6-6 bond), by a C-C bond belonging to a 6-ring and a 5-ring (5-6 bond), and by an edge carbon atom that is located at the center of two 6-rings and a 5-ring. Large stabilization is obtained for adsorption by an edge carbon atom or a 6-6 bond, whereas the other coordination types are not favored. Our result differs from an XPD experimental result for a C 60 monolayer on Cu(111), in which adsorption by a 6-ring is most favored. The discrepancy strongly suggests that C 60-C 60 interactions contribute significantly to the determination of C 60 orientations in C 60/Cu(111) monolayer systems.

元の言語英語
ページ(範囲)12672-12679
ページ数8
ジャーナルJournal of Physical Chemistry B
107
発行部数46
出版物ステータス出版済み - 11 20 2003

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All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

これを引用

Ogawa, A., Tachibana, M., Kondo, M., Yoshizawa, K., Fujimoto, H., & Hoffmann, R. (2003). Orbital Interactions between a C 60 Molecule and Cu(111) Surface. Journal of Physical Chemistry B, 107(46), 12672-12679.