Nanoporous Crystals Of Calixarene/porphyrin Supramoiecular Complex Functionalized By Diffusion And Coordination Of Metal Ions

摘要

The high concentration and high degree of order provided by the crystalline state potentially imply high activity of reactions associated with high stereocontrol. However, among the forms of matter, the solid state is the least reactive, as reactions in the bulk are generally difficult to promote because of the close packing. For this reason, microporous frameworks having voids and channels of various aperture sizes and shapes are important for a wide range of technological applications, such as selective guest storage and molecular sieving as well as use as nanoreactors. Natural and artificial zeolites and metal phosphates are an important class of robust, rigid nanoporous materials whose frameworks are based on the strength and directionality of the covalent nature of bonds. These properties are also present in the class of completely artificial metal-organic polyhedra that can be rationally designed and functionalized through their constituents.