Hydrosilylation of Azide‐Containing Olefins as a Convenient Access to Azidoorganotrialkoxysilanes for Self‐Assembled Monolayer Elaboration onto Silica by Spin Coating

Abstract We have developed a convenient and versatile synthetic methodology to prepare various azidoorganotrialkoxysilanes using the platinum‐catalyzed hydrosilylation of stable olefinic precursors with an azide function as the last step. Hydrosilylation of alkene‐functionalized aliphatic and aromatic azides featuring alkyl, urea, carbamate and pegylated moieties has been successfully achieved while preserving the integrity of the azide function. The spin coating technique has been used successfully to prepare one azide‐terminated monolayer in ambient atmosphere onto an oxide surface. This process has the advantages of being fast, simple, easy to handle and needs less solvent. The ability of the azide‐terminated surface to immobilize molecules via the copper‐catalyzed alkyne‐azide cycloaddition reaction has been demonstrated by Modulation Infrared Reflection‐Adsorption Spectroscopy using a probe molecule bearing a NO 2 group.