Origins of Displacement in 1-Adamantanethiolate Self-Assembled Monolayers

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• 作者：Arrelaine A. Dameron ; Thomas J. Mullen ; Robert W. Hengstebeck ; Hé ; ctor M. Saavedra ; Paul S. Weiss
• 刊名：Journal of Physical Chemistry C
• 出版年：2007
• 出版时间：May 10, 2007
• 年：2007
• 卷：111
• 期：18
• 页码：6747 - 6752
• 全文大小：218K
• 年卷期：v.111,no.18(May 10, 2007)
• ISSN：1932-7455

文摘

We have investigated the origins of the susceptibility of 1-adamantanethiolate self-assembled monolayers onAu{111} to displacement by other thiol molecules. Using scanning tunneling microscopy, X-ray photoelectronspectroscopy, and electrochemical desportion experiments to probe separated self-assembled monolayers onAu{111} created by the displacement of 1-adamantanethiolate with n-dodecanethiolate, we have shown thatthere is no difference between the chemical environments at the Au{111} surface for single-component orseparated self-assembled monolayers of each molecule. There are, however, differences in interaction strengthsbetween the 1-adamantanethiolate molecules and the n-dodecanethiolate molecules that contribute to1-adamantanethiolate displacement.