Synthesis and Characterization of Mesoporous Silica with Cyclodextrin Derivatives as Templates

Abstract

Certain small molecules such as cyclodextrins can form inclusion compounds with polymers. The guest polymer chains are confined to narrow, cylindrical channels created by the host molecular. The inclusion compound between cyclodextrin and Poly (ethylene glycol)-block -poly (propylene glycol)-block poly (ethylene glycol)have been successfully prepared and studied in this thesis. Several methods including TGA, X-ray diffraction, FTIR and NMR have been developed to characterize and confirm that polymer chains have been successfully included inside the IC narrow channels formed by the cyclodextrins. Mesoporous silica with additional mesopores has been synthesized by using dimethyloctasilyl-?-cyclodextrin and triblock polymer (poly (ethylene glycol)-poly (propylene glycol)-poly (ethylene glycol)) P123 as the structure directing agent. X-ray diffraction (XRD) and NMR techniques were used to characterize the calcined sample