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PHOTOINDUCED PRODUCTS IN AC60MONOLAYER ON${\rm Si}(111) (\sqrt{3}\times \sqrt{3})\hbox{-}{\rm Ag}$: AN STM STUDY

Author

Listed:
  • T. NAKAYAMA

    (The Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan)

  • J. ONOE

    (The Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan)

  • K. NAKATSUJI

    (The Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan)

  • J. NAKAMURA

    (The Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan)

  • K. TAKEUCHI

    (The Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan)

  • M. AONO

    (The Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan;
    Department of Precision Science and Technology, Osaka University, Suita, Osaka 565-0871, Japan)

Abstract

Irradiation of ultraviolet-visible light onto aC60monolayer on${\rm Si}(111) (\sqrt{3}\times \sqrt{3}){\rm R30}^\circ\hbox{-}{\rm Ag}$resulted in a chemical reaction between adjacentC60molecules, as confirmed by scanning tunneling microscopy (STM) images. The major photoinduced products were double-bonded (two covalent C–C bonds between molecules)C60dimers and linear trimers. We also found single-bonded (single covalent bond between molecules)C60dimers and linear trimers, and two-dimensionalC60oligomers as minor products. Observed atomic geometry of the nonbonding contact between aC60dimer (or a trimer) and a neighboring dimer (or a trimer), which are parallel to each other regarding their axes, is different from that reported betweenC60molecules in three-dimensionalC60crystals, where there is no interaction with a substrate.

Suggested Citation

  • T. Nakayama & J. Onoe & K. Nakatsuji & J. Nakamura & K. Takeuchi & M. Aono, 1999. "PHOTOINDUCED PRODUCTS IN AC60MONOLAYER ON${\rm Si}(111) (\sqrt{3}\times \sqrt{3})\hbox{-}{\rm Ag}$: AN STM STUDY," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 6(06), pages 1073-1078.
    • Handle: RePEc:wsi:srlxxx:v:06:y:1999:i:06:n:s0218625x99001177
    DOI: 10.1142/S0218625X99001177
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