Synthesis and Characterization of Organosilane Functionalized DAM-1 Mesoporous Silica

摘要

Organic functionalized mesoporous DAM-1 containing amine, cyclopentadienyl, phenyl, and thiol groups was synthesized under acidic conditions by the direct co-condensation of TEOS or TMOS with respective organosilanes using vitamin E TPGS as the structure directing agent. Well-ordered functionalized mesoporous DAM-1 containing both amine and thiol were successfully prepared yielding ～1 mmol g~(-1) of sulfur and 0.73 mmol g~(-1) of nitrogen when started with ～0.088 molar ratio of APTMS/TMOS and MPTMS/TMOS. The incorporation of both amine and thiol was confirmed by forming a fluorescent isoindole from o-phthalaldehyde. The presence of cyclopentadiene in the mesopore was demonstrated by synthesizing a supported half sandwich compound CpMn(CO)_3-DAM-1 from Mn_2(CO)_(10) via photolysis. The samples were characterized by fluorescence and vibrational spectroscopy as well as x-ray diffraction and surface area measurements.