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Functionalization of surfaces with organosilanes
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We demonstrate the successful covalent functionalization of -type with organosilanes. In particular, wet-chemically processed self-assembled layers of octadecyltrimethoxysilane and amino-propyldiethoxymethylsilane were investigated. The structural and chemical properties of these layers were studied by contact angle measurements, atomic force microscopy, thermal desorption, and x-ray photoelectron spectroscopy. The organic layers are smooth and wetting angles up to 100° are observed. Desorption temperatures in the range of prove the covalent bonding of the organic molecules to the SiCsurface. By utilizing self-assembled layers with functional end groups, attachment of complex molecules was demonstrated by immobilization of proteins on micropatterned organic layers.
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