Acta Phys. -Chim. Sin. ›› 1998, Vol. 14 ›› Issue (07): 609-614.doi: 10.3866/PKU.WHXB19980707

• ARTICLE • Previous Articles     Next Articles

Preparation of Atomically Flat Stripped-gold Substrate for Self-assembly

Jiang Peng, Cheng Guang-Jun, Zhang Hao-Li, Cai Sheng-Min, Liu Zhong-Fan   

  1. Center for Intelligent Materials Research(CIMR),College of Chemistry and Molecular Engineering,Peking University,Beijing 100871
  • Received:1997-11-13 Revised:1998-01-16 Published:1998-07-15
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Abstract:

 A method for preparing of atomical flat gold substrate was reported. A series of gold substrates were prepared with the method from 25 C to 270 C and were characterized by using Scanning probe Microscope(SPM). The results show that the mean roughness values of these gold substrates are smaller than 0.4 nm for areas of 25 μm2. A higher resolution image made by using Scanning Tunneling Microscope (STM) shows a hexagonal pattern of high spots with nearest neighbor spacing of 0.30±0.04 nm, which is consistent with a Au-(111) lattice. Meanwhile, self-assembled monolayer film of 1,6-hexanedithiol on the gold has been characterized by electrochemical cyclic voltammetry and X-ray photoelectron spectra.

Key words: Stripped-gold substrate, Scanning probe microscope, Self-assembly