Abstract

The binary monolayer system of 2-naphthalenethiol (2NT) and octanethiol (OT) was prepared on the surface of Au(111) and structurally characterized by scanning tunneling microscopy (STM) in ambient conditions. X-ray photoelectron spectroscopy (XPS) was conducted for elemental analysis of the adsorbates present in each monolayer. Both the sequence of deposition and the concentration of the 2NT solution used were varied. The mixed monolayer systems formed various surface structures, including the formation of novel packing of 2NT which are observed when the lower concentration of 2NT is adsorbed onto a pre-existing OT monolayer.

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