| 초록 |
Periodic mesoporous cyclic-organosilicas were prepared under very weak acidic conditions using block copolymer templates. Generally, mesoporous silica and organosilica materials can be synthesized under very strong acidic condition when nonionic block copolymer is used as a template. In this study, very weak acids such as boric acid, copper chloride, and iron chloride were employed to synthesize highly ordered mesoporous organosilicas. We discuss for any change of thermal property as well as structural properties. TG and DTG thermograms were obtained to analyze the thermal property. SAXS and TEM were used for the ordered mesostructure and solid state 29Si and 13C MAS NMR was analyzed in detail for the structural integrity and stability. A |
