Enhanced surface evolution induced by the molecular desorption in dodecanethiol self-assembled monolayer on Au(1 1 1)

• Published in: Surface science Vol. 600; no. 3; pp. 625 - 631
• Main Authors: Pi, U.H., Kim, J.H., Yu, H.Y., Park, Chan Woo, Choi, Sung-Yool, Kim, Yong-Kwan, Ha, Jeong Sook
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01-02-2006; Amsterdam Elsevier Science; New York, NY
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Desorption; Dodecanethiol; Evolution; Exact sciences and technology; Melting transition; Mobility; Physics; Scanning tunneling microscopy; Self-assembled monolayer; Surface; Scanning tunneling microscopy; Dodecanethiol; Mobility; Melting transition; Self-assembled monolayer; Evolution; Desorption; Surface; Melting; Phase transformations; Self-assembled layers
• ISSN: 0039-6028; 1879-2758
• DOI: 10.1016/j.susc.2005.11.014

The evolution of the surface structure in dodecanethiol self-assembled monolayer on Au(1
1
1) substrate has been studied with ultra high vacuum scanning tunneling microscopy at several temperatures. The structure of substrate Au(1
1
1) surface changed suddenly at a temperature of 110
°C. The enhanced mobility of the substrate gold atoms at this temperature is attributed to the desorption of the dodecanethiol molecules.