Effect of amine functionalization of SBA-15 on controlled baicalin drug release

In this paper, we present the release of baicalin from hexagonal periodic mesoporous silica SBA-15 and amino-functionalized mesoporous SBA-15 (A-SBA-15), which serve as drug delivery systems (SBA-15/baicalin and A-SBA-15/baicalin). The modified and drug loaded mesoporous materials were characterized by XRD, SEM, TEM, N2 physisorption, IR, TG and HPLC. The results demonstrated that slightly higher amount of baicalin was loaded in APS-SBA-15, and the dissolution rate of baicalin from the A-SBA-15/baicalin was much faster than from the SBA-15/baicalin. A-SBA-15/baicalin as baicalin delivery system was better than SBA-15/baicalin because the faster dissolution rate compared with SBA-15/baicalin was more conducive to drug absorption.