Synthesis and characterization of mesoporous composite silica monolith

摘要

Coumarin4 (Cou4) was loaded into mesoporous silicon SBA-15 monolith channels by a simple postgraft-ing method at room temperature. The obtained Cou4/SBA-15 composite monolith was compared with the blank SBA-15 monolith. The investigation of X-ray diffraction, transmission electron microscopy (TEM), UV-vis and photoluminescence (PL) reveals the existence of cou4 in the channels of SBA-15 monolith. In addition, a red-shift and strong fluorescence in PL spectrum was observed from the composite monolith compared with that of Cou4 in C2H5OH solution. This is good for the new application of optical materials.