title: Exchange reactions between alkanethiolates and alkaneselenols on Au{111}.
abstract: When alkanethiolate self-assembled monolayers on Au{111} are exchanged with alkaneselenols from solution, replacement of thiolates by selenols is rapid and complete, and is well described by perimeter-dependent island growth kinetics. The monolayer structures change as selenolate coverage increases, from being epitaxial and consistent with the initial thiolate structure to being characteristic of selenolate monolayer structures. At room temperature and at positive sample bias in scanning tunneling microscopy, the selenolate-gold attachment is labile, and molecules exchange positions with neighboring thiolates. The scanning tunneling microscope probe can be used to induce these place-exchange reactions.
authors.affiliation: California NanoSystems Institute and Department of Chemistry and Biochemistry, University of California , Los Angeles, California 90095, United States.
authors.forename: J Nathan
authors.initials: JN
authors.lastname: Hohman
authors.forename: John C
authors.initials: JC
authors.lastname: Thomas
authors.forename: Yuxi
authors.initials: Y
authors.lastname: Zhao
authors.forename: Harsharn
authors.initials: H
authors.lastname: Auluck
authors.forename: Moonhee
authors.initials: M
authors.lastname: Kim
authors.forename: Wouter
authors.initials: W
authors.lastname: Vijselaar
authors.forename: Sander
authors.initials: S
authors.lastname: Kommeren
authors.forename: Andreas
authors.initials: A
authors.lastname: Terfort
authors.forename: Paul S
authors.initials: PS
authors.lastname: Weiss