title: Palladium-catalyzed coupling reactions for the functionalization of Si surfaces: superior stability of alkenyl monolayers.
abstract: Palladium-catalyzed Suzuki, Heck, and Sonogashira coupling reactions were studied as reaction protocols for organic modification of Si surfaces. These synthetically useful protocols allow for surface modification of alkene, alkyne, and halide terminated surfaces. Surface oxidation and metal contamination were assessed by X-ray photoelectron spectroscopy. The nature of the primary passivation layer was an important factor in the oxidation resistance of the Si surface during the secondary functionalization. Specifically, the use of alkynes as the primary functionalization layer gave superior stability compared to alkene analogues. The ability to utilize Pd-catalyzed coupling chemistries on Si surfaces opens great versatility for potential molecular and nanoscale electronics and sensing/biosensing applications.
authors: Department of Chemistry and the Tyndall National Institute, University College Cork , Cork, Ireland.
authors: Gillian
authors: G
authors: Collins
authors: Colm
authors: C
authors: O'Dwyer
authors: Michael
authors: M
authors: Morris
authors: Justin D
authors: JD
authors: Holmes