Figure 2.
Amount of APS adsorbed to silicon oxide surface (Si-O-Si region, 900–1280 cm−1 band area) versus pre-silanization atmospheric moisture content (g H2O/m3 air, outdoor humidity reading with indoor experiment). Black squares indicate APTES adsorption in anhydrous solvent. Additional samples were pre-heated to 100–200 °C, flushed with dry nitrogen gas, then sealed from atmospheric moisture prior to exposure to APTES in anhydrous solvent (circled triangles).