Binding groups for highly ordered SAM formation: carboxylic versus thiol

The structure of analogous SAMs chemisorbed on an Ag substrate via a –SH or –COOH binding group is reported. Our observations indicate that COOH binding groups can be considered as a promising alternative for the current standard based on the sulfur binding groups, particularly when 2D ordering, SAM fabrication time and stability under ambient conditions are of great importance.