title: Spatially selective formation of hydrocarbon, fluorocarbon, and hydroxyl-terminated monolayers on a microelectrode array.
abstract: A protection-deprotection strategy, using gold oxide as a passivating layer, was used to direct the self-assembly of monolayers (SAMs) selectively at individual gold microelectrodes in an array. This approach allowed the formation of hydroxyl-terminated monolayers, without side reactions, in addition to hydrocarbon and fluorocarbon SAMs. Fluorescence microscopy was used to visualize selective dewetting of hydrophobic monolayers by an aqueous dye solution, and spatially resolved X-ray photoelectron spectroscopy was used to demonstrate a lack of cross-contamination on neighboring microelectrodes in the array.
authors.affiliation: Department of Chemistry, Lehigh University, Bethlehem, Pennsylvania 18015-3172, United States.
authors.forename: Kevin M
authors.initials: KM
authors.lastname: Cook
authors.forename: Daniel A
authors.initials: DA
authors.lastname: Nissley
authors.forename: Gregory S
authors.initials: GS
authors.lastname: Ferguson
mesh_terms: D005466:Fluorocarbons / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D006838:Hydrocarbons / Q000737:chemistry*; D006878:Hydroxides / Q000737:chemistry*; D008839:Microelectrodes; D010087:Oxides / Q000737:chemistry; D013499:Surface Properties
chemical_list: D005466:Fluorocarbons; D006838:Hydrocarbons; D006878:Hydroxides; D010087:Oxides; D006046:Gold; C031356:hydroxide ion