| 초록 |
Since researchers at Mobil Company reported the syntheses of mesoporous silicas, there have been a lot of development in their synthesis, structural characterization and modification with various inorganic or organic functional groups. Most popularly, the organically modified mesoporous silicas can be prepared via post-grafting technique. However, post-grafting method is too easy cleavage of the Si-O-C bonds during applications and the loss of functionality. We propose a novel strategy for modification of mesoporous silica surface via a dehydroxylation route using Grignard reagent. The route gives not only the formation of a direct Si-C bond, which is much stronger in hydrolytic cleavage, but also preclusion from the formation of both surface bound oligomers and variable modes of attachment. Preparation and application of periodic mesoporus organo-silica materials are also discussed. |
