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INTRAMOLECULAR ENERGY BAND DISPERSION IN ORIENTED THIN FILM OFn-CF3(CF2)22CF3STUDIED BY ANGLE-RESOLVED UPS AND THEORETICAL SIMULATION

Author

Listed:
  • DAISUKE YOSHIMURA

    (Research Center for Materials Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan)

  • KAZUHIKO SEKI

    (Research Center for Materials Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan)

  • TAKAYUKI MIYAMAE

    (National Institute of Materials and Chemical Research, 1-1 Higashi, Tsukuba 305-8565, Japan)

  • HISAO ISHII

    (Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan)

  • SHINJI HASEGAWA

    (Institute for Molecular Science, Myodaiji-cho, Okazaki 444-8585, Japan)

  • KOJI KAMIYA OKUDAIRA

    (Department of Materials Science, Faculty of Engineering, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan)

  • NOBUO UENO

    (Department of Materials Science, Faculty of Engineering, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan)

Abstract

Electronic structure of perfluorotetracosane [n-CF3(CF2)22CF3; PFT], which is an oligomer of poly(tetrafluoroethylene) (PTFE), was investigated by angle-resolved photoemission spectroscopy (ARUPS) with synchrotron radiation. Theoretical simulations of ARUPS spectra were also performed by the independent atomic center (IAC) approximation combined with ab initio molecular orbital (MO) calculations. Measured normal-emission spectra for end-on oriented (the long-chain axis of PFT is perpendicular to the surface) films showed an incident photon energy dependence due to the intramolecular energy band dispersion. The energy band structure along the long-chain direction of PFT obtained from measured and calculated spectra is also discussed.

Suggested Citation

  • Daisuke Yoshimura & Kazuhiko Seki & Takayuki Miyamae & Hisao Ishii & Shinji Hasegawa & Koji Kamiya Okudaira & Nobuo Ueno, 2002. "INTRAMOLECULAR ENERGY BAND DISPERSION IN ORIENTED THIN FILM OFn-CF3(CF2)22CF3STUDIED BY ANGLE-RESOLVED UPS AND THEORETICAL SIMULATION," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 9(01), pages 407-412.
    • Handle: RePEc:wsi:srlxxx:v:09:y:2002:i:01:n:s0218625x02002397
    DOI: 10.1142/S0218625X02002397
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