Adsorption of Pyrrole on the Si(111)-7×7 Surface: Effect of Substrate Temperature

Abstract:

Adsorption of pyrrole on the Si(111)-7×7 surface was investigated using scanning tunneling microscopy (STM). Template-induced molecular corral structure was observed at room temperature though the N-H bond cleavage. At the substrate temperature of 130 °C, the pyrrolyl adsorbates were observed by STM with reserving the 7×7 substrate. However, the self-assembly of the molecular corral structure was disarranged at 130 °C. Then, pyrrolyl group was decomposed or desorbed from the surface at the substrate temperature of 200 °C. The defect-induced attachment of pyrrole was also observed.

• Periodical: Advanced Materials Research (Volume 1117)
• Pages: 35-38
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1117.35
• Online since: July 2015
• Authors: Masaru Shimomura*, Keisuke Ota
• Keywords: Adsorption Structure, Pyrrole, Scanning Tunneling Microscopy, Silicon

References

[1] Binnig G, Rohrer H, Gerber Ch and Weibel E 1983 Phys. Rev. Lett. 50 120.

[2] Takayanagi K, Tanishiro Y, Takahashi S and Takahashi M 1985 Surf. Sci. 164 367.

[3] Yuan Z Y, Chen X F, Wang Z H, Yong K S, Cao Y, Xu G Q 2003 J. Chem. Phys. 119 10389.

[4] Peng X, Wang X, Liu L, Wang Y and Tan, Y 2009 Chem. Phys. 359 21.

[5] Zhang Y P and Xu G Q 2010 J. Phys. Chem. C 114 16625.

[6] Wolkow R and Avouris Ph 1988 Phys. Rev. Lett. 60 1049.