Formation and Surface Structure of Organic Thiosulfate Self-Assembled Monolayers on Au(111)

Abstract

Self-assembled monolayers (SAMs) prepared from n-alkanethiols and w-functionalized alkanethiols have been extensively studied to date, and these SAM systems are now relatively well characterized. In order to extend the application of SAMs, it is essential to develop and characterize a new SAM system. It is also very important to understand the nature of the self-assembly process and the SAM structure. Instead of alkanethiols, organic thiosulfates have three main advantages: water-soluble compounds, high chemical stability, and no stink smell. In this study, to explore new class SAMs, the SAMs formed by organic thiosulfates on Au(111) were prepared and characterized by various surface sensitive techniques. From these results, we will discuss formation mechanism and surface structureof organic thiosulfate SAMs on Au(111).