XPS study of oriented organic molecules. The single crystal of an azobenzene-containing alkyl ammonium amphiphile

Youichi Nakayama, Takayuki Takahagi, Fusami Soeda, Akira Ishitani, Masatsugu Shimomura, Kenji Okuyama, Toyoki Kunitake

研究成果: Contribution to journalArticle査読

14 被引用数 (Scopus)

抄録

We have observed the angle-dependent XPS (X-ray photoelectron spectroscopy) N 1s spectral change of a single crystal of azobenzene-containing ammonium amphiphile C12AzoC5N+Br-. By comparing the calculated intensity ratio of the azo-group nitrogens against the ammonium nitrogen with that experimentally observed, the N 1s spectral change has successfully been correlated with the stacked bilayer model in the outermost surface of the crystal. With the assumption that the molecular axis inclines about 30 ° to the layer surface as determined by X-ray diffraction measurement, the N 1s photoelectron (about 850 eV in kinetic energy) mean-free-path was estimated to be about 24 Å. The value agreed well with theoretical values. We have successfully confirmed that XPS has potentiality for analyzing molecular orientation besides conventional elemental and functional group analyses.

本文言語英語
ページ(範囲)1307-1316
ページ数10
ジャーナルApplied Surface Science
33-34
C
DOI
出版ステータス出版済み - 9 1988

All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 凝縮系物理学
  • 物理学および天文学(全般)
  • 表面および界面
  • 表面、皮膜および薄膜

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