title: Communication: Site-dependent reactivity between chlorine atoms and mixed-chain-length alkanethiolate monolayers.
abstract: The chemical reaction of atomic chlorine with mixed monolayers of alkanethiolates having different chain lengths was investigated. In situ scanning tunneling microscopy was used to acquire time-lapsed series of images, allowing the measurement of the effect of monolayer structure and composition on reactivity. The rate of chemical reaction is strongly site-dependent. In particular, the boundary between two different-length alkanethiolates greatly promotes the reactivity of nearby molecules, much more so than any other native defect typical of single-component alkanethiolate monolayers.
authors.affiliation: Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA.
authors.forename: David Y
authors.initials: DY
authors.lastname: Lee
authors.forename: S Alex
authors.initials: SA
authors.lastname: Kandel