高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (S1): 103.

• 研究论文 • 上一篇    下一篇

Chemically and Electrochemically Induced Surface Reconstruction of Au Single Crystal Studied by the Nonlinear Optics

Baba R., Mochizuki H., Kozakai T., Fujishima A.   

  1. Department of Applied Chemistry, Faculty of Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113, Japan
  • 收稿日期:1995-08-05 出版日期:1995-12-31 发布日期:1995-12-31

Chemically and Electrochemically Induced Surface Reconstruction of Au Single Crystal Studied by the Nonlinear Optics

Baba R., Mochizuki H., Kozakai T., Fujishima A.   

  1. Department of Applied Chemistry, Faculty of Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113, Japan
  • Received:1995-08-05 Online:1995-12-31 Published:1995-12-31

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摘要：

The rotational anisotropy of the optical second harmonic generation (SHG) from Au (Ⅲ) surface was studied as a measure of the surface reconstruction before and after the self-assembly (SA) of thiols on the gold facet. The SA reaction was undertaken on the √3×23 reconstructed Au(Ⅲ) surface which was achieved consistently throughout the reacition by the electrochemical potential control in an aqueous HCIO4, solution. The polarization dependence of the anisotropic SHG pattern showed that the initial surface symmetry of the reconstructed √3×23 structure was neither settled nor deformed into the 1×1 structure by the monolayer deposition of SA-overcoat which was expected to show √3×√3 hexagonal structure.

关键词: Surface reconstruction, Self-assembly, SHG

Abstract:

The rotational anisotropy of the optical second harmonic generation (SHG) from Au (Ⅲ) surface was studied as a measure of the surface reconstruction before and after the self-assembly (SA) of thiols on the gold facet. The SA reaction was undertaken on the √3×23 reconstructed Au(Ⅲ) surface which was achieved consistently throughout the reacition by the electrochemical potential control in an aqueous HCIO4, solution. The polarization dependence of the anisotropic SHG pattern showed that the initial surface symmetry of the reconstructed √3×23 structure was neither settled nor deformed into the 1×1 structure by the monolayer deposition of SA-overcoat which was expected to show √3×√3 hexagonal structure.

Key words: Surface reconstruction, Self-assembly, SHG

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