The adsorption of unsymmetrical spiroalkanethiols onto gold affords homogeneously mixed multi-component interfaces

Young-Seok Shon, Seunghwan Lee, Scott S. Perry, T. Randall Lee

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Exposure of the unsymmetrical spiroalkanedithiol, 2-octyl-2-pentadecylpropane-1,3-dithiol, to the surface of gold afforded a multicomponent self-assembled monolayer (SAM) in which the differing tail groups were well mixed at the molecular level. The new “mixed” SAM was characterized by ellipsometry, contact angle goniometry, polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS), and atomic force microscopy (AFM). Comparison of the new SAM to those generated by the coadsorption of mixtures of normal alkanethiols having analogous chain lengths and surface compositions showed that local domain formation (or “islanding”) of the tail groups found in the latter SAMs was absent in the SAM derived from the unsymmetrical spiroalkanedithiol.
Original languageEnglish
JournalJournal of the American Chemical Society
Volume122
Issue number7
Pages (from-to)1278-1281
ISSN0002-7863
DOIs
Publication statusPublished - 2000
Externally publishedYes

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