Electrochemical method of controlling thiolate coverage on a conductive substrate such as gold
AssigneeIowa State University Research Foundation, Inc.
InventorsMarc D. Porter, Duane E. Weisshaar
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Abstract
An electrochemical method for forming a partial monomolecular layer of a predetermined extent of coverage of a thiolate of the formula, XRS.sup.-, wherein R can be a linear or branched chain hydrocarbon or an aromatic or the like and X can be any compatible end group, e.g., OH, COOH, CH.sub.3 or the like, upon a substrate such as gold, which involves applying in an electrochemical system a constant voltage preselected to yield the desired predetermined extent of coverage.
Claims14
A method for forming a partial monomolecular layer of a thiolate having the formula, XRS.sup.-, wherein R is a member selected from the group consisting of linear chain hydrocarbons, branched chain hydrocarbons and aromatics, and X is a member selected from the group consisting of OH, COOH, CH.sub.3, CF.sub.3 (CF.sub.2).sub.7, inorganic complexes with thiol ligands, organometallic compounds, cyclodextrins, and crown ethers, upon a substrate, which comprises determining the constant voltage necessary to be applied to provide a desired extent of coverage of said thiolate upon said substrate, providing an electrochemical system for forming said thiolate partial monomolecular layer upon said substrate and applying said constant voltage for a time sufficient to establish a redox equilibrium, which deposits the thiolate partial monomolecular layer upon said substrate.
Dependencies are inferred from the claim text.