Correlations between Wettability and Structure in Monolayers of Alkanethiols Adsorbed on Gold

摘要

Long-chain aklanethiols absorb onto gold from solution and from monolayers. Coadsorption of HS(CH2)11OH and HS(CH2)21CH3 from ethanolic solutions of varying composition generates monolayers, the wettability of which is correlated closely with the composition of the monolayer. Absorption of the longer chain thiol is preferred over the short chain, and formation of monolayers comprising predominantly one component is favored over mixed monolayers containing both component thiols.