Scanning Tunneling Microscopy Studies of Self-Assembled Monolayers of Alkanethiols on Gold
PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF CHEMISTRY
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We have used scanning tunneling microscopy to probe the molecular scale structures of pure and mixed composition self-assembled monolayers of CH3CH215SH and CH302CCH215SH on gold. A predominant defect structure is found for both films and is assigned as a void defect in the thiolate overlayer. The mixed composition films are observed to phase segregate into domains of the pure component thiolates. Time-lapse series of scanning tunneling microscope images reveal kink-driven motion at step edges and exchange of thiolate molecules on terraces.
- Inorganic Chemistry
- Organic Chemistry