Scanning tunneling microscopy (STM) is used in ambient conditions to characterize the surfaces produced on Au(111) through exposure to octanethiol (OT) and decyl thiocyanate (DTCN). Mixed monolayers formed through the coadsorption of OT and DTCN are influenced by the relative ratios of the two components; increasing the fraction of DTCN increases its coverage on the surface. The overall solution concentration also affects the surface structures produced. Sequential adsorption of OT followed by DTCN results in the restructuring of the domain boundaries and allows the displacement of OT along defects in the monolayer. We demonstrate here that modifying the deposition parameters can tailor the surface coverage and aggregation patterns formed using SAMs.

Altering the surface structure of SAMs through the adsorption of octanethiol and decyl thiocyanate on Au(111)

254th National Meeting (2017)

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