Skip to main content
. 2004 Nov 10;32(20):5973–5980. doi: 10.1093/nar/gkh932

Figure 2.

Figure 2

IR absorbance of silica/APTES/PMPI supports in the region of maleimide and aromatic C–H stretching. (a) As a function of immersion time in 10 mM sodium phosphate, 0.1 M NaCl, pH 7.0. Solid line: 0.5 h; dashed line: 4.5 h; dotted line: 168 h. (b) As a function of pH for a 3 h immersion in 10 mM sodium phosphate, 0.1 M NaCl. Solid line: pH 2; dashed line: pH 7; dotted line: pH 12. Arrow in (a) indicates the maleimide C–H band. The structure shown in the inset indicates the corresponding C–H bonds in bold.