Covalently attached organic monolayers on SiC and SixN4 surfaces: formation using UV light at room temperature.
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.
Rosso
Michel
M
Laboratory of Organic Chemistry, Wageningen University, Wageningen, The Netherlands.
Giesbers
Marcel
M
Arafat
Ahmed
A
Schroën
Karin
K
Zuilhof
Han
H
D000478:Alkylation; D017554:Carbon Compounds, Inorganic / Q000737:chemistry*; D017655:Silicon Compounds / Q000737:chemistry*; D013053:Spectrophotometry; D013499:Surface Properties; D013696:Temperature; D014466:Ultraviolet Rays
D017554:Carbon Compounds, Inorganic; D017655:Silicon Compounds; C032734:silicon nitride; C022088:silicon carbide