title: Covalently attached organic monolayers on SiC and SixN4 surfaces: formation using UV light at room temperature.
abstract: We describe the formation of alkyl monolayers on silicon carbide (SiC) and silicon-rich silicon nitride (SixN4) surfaces, using UV irradiation in the presence of alkenes. Both the surface preparation and the monolayer attachment were carried out under ambient conditions. The stable coatings obtained in this way were studied by water contact angle measurements, infrared reflection absorption spectroscopy, X-ray reflectivity, and X-ray photoelectron spectroscopy. Besides unfunctionalized 1-alkenes, methyl undec-10-enoate, and 2,2,2-trifluoroethyl undec-10-enoate were also grafted onto both substrates. The resulting ester-terminated surfaces could then be further reacted after hydrolysis using amide chemistry to easily allow the attachment of amine-containing compounds.
authors.affiliation: Laboratory of Organic Chemistry, Wageningen University, Wageningen, The Netherlands.
authors.forename: Michel
authors.initials: M
authors.lastname: Rosso
authors.forename: Marcel
authors.initials: M
authors.lastname: Giesbers
authors.forename: Ahmed
authors.initials: A
authors.lastname: Arafat
authors.forename: Karin
authors.initials: K
authors.lastname: Schroën
authors.forename: Han
authors.initials: H
authors.lastname: Zuilhof
mesh_terms: D000478:Alkylation; D017554:Carbon Compounds, Inorganic / Q000737:chemistry*; D017655:Silicon Compounds / Q000737:chemistry*; D013053:Spectrophotometry; D013499:Surface Properties; D013696:Temperature; D014466:Ultraviolet Rays
chemical_list: D017554:Carbon Compounds, Inorganic; D017655:Silicon Compounds; C032734:silicon nitride; C022088:silicon carbide