Multifunctional Amine Mesoporous Silica Spheres Modified with Multiple Amine as Carriers for Drug Release

Figure 5

FTIR spectra of sample: MDNQ (a), NQ-62 (b), MSN-40/MSN-40/IBU (c), and IBU/MSN-NH2-40/IBU/MSN-DQ-40 (d).

(a)

(b)

(c)

(d)