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J Phys Chem A. 2009 Apr 23;113(16):3895-903. doi: 10.1021/jp810048n.

Self-assembled monolayers of 2-Adamantanethiol on Au{111}: control of structure and displacement.

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1
Department of Chemistry and Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.

Erratum in

  • J Phys Chem A. 2012 Mar 1;116(8):1974.

Abstract

We have investigated the formation of 2-adamantanethiolate self-assembled monolayers on Au{111} and their displacement by n-dodecanethiol, using scanning tunneling microscopy, X-ray photoelectron spectroscopy, and infrared reflection absorption spectroscopy. Well-ordered 2-adamantanethiolate monolayers undergo rapid and significant molecular exchange upon exposure to n-dodecanethiol solutions, but their structures and intermolecular interactions template the growth of n-dodecanethiolate domains. Annealing 2-adamantanethiolate monolayers at 78 degrees C decreases the density of vacancy islands, while increasing the overall order and the average domain sizes in the films. This results in slower displacement by n-dodecanethiol molecules, as compared to unannealed monolayers. The secondary sulfur position on the adamantyl cage influences the lattice structure and exchange of 2-adamantanethiolate monolayers by alkanethiols.

PMID:
19309101
DOI:
10.1021/jp810048n

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