Abstract
The preparation and application of new intercalation compounds of graphite oxide are reviewed. Graphite oxide was silylated with different silylating reagents such as alkyltrichlorosilane and 3-aminopropylethoxysilanes. After they were bidentately or monodentately attached to layers of graphite oxide, Si-OH groups which are available for further functionalization were introduced. When highly silylated graphite oxide was heated under vacuum, microporous or mesoporous pillared carbons in which adjacent carbon layers are connected with siloxane or silsesquioxane pillars were obtained. Organic molecules were size-selectively intercalated into the pillared carbon obtained from graphite oxide silyated 3 times with methyltrichlorosilane. The excess hydrogen adsorption of pillared carbons at ambient temperature reached 0.6 wt% at 20 MPa. Pillared carbon thin films were prepared and they showed a selective electrical resistance change response to electron donating and smaller organic molecules.
