Metal organic frameworks host-guest interactions

There are several basic approaches to the design of heterogeneous catalysts based on MOFs the use of MOFs as classical supports for an active metal, the immobilization of a catalytically active site in the framework per se (in the inorganic node or in the organic linker), host-guest interaction, postsynthetic modification of the framework, and so forth. These approaches will be discussed later in more detail. 

As we have mentioned, MOFs are formed by metal ions or clusters as the lattice nodes and organic ligands as linkers. Due to the hybrid nature of MOFs, the active site can initially be present in the organic or inorganic component of the framework or can be introduced from the outside (host-guest interaction, a postsynthesized site, doping with catalyticaUy active metals). 

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