“…Therefore, to achieve better therapeutic action, the drug materials are required to bind with some carrier materials for the targeted drug delivery process . Two types of carriers generally work in the drug delivery system: one is the organic carrier, which includes polymer materials, micelles, liposomes, and protein nanoparticles, and the other includes porous materials such as zeolites, mesoporous silica, etc. − The porous materials are advantageous over other organic carriers due to their well-defined porosity and flexibility, which help in greater loading of drug molecules as well as their controlled release. , Despite various types of mesoporous materials, metal organic frameworks (also called supramolecular solids) are extensively used as drug carriers, as they possess a regular porosity, a large pore volume, flexible pore sizes with high thermal and chemical stability, and organic functionality. ,, They are constructed by metal atoms or metal clusters, called secondary building units (SBUs), connected with multidentate organic ligands with coordinate bonds . Structurally, metal organic frameworks contain hydrophilic and hydrophobic units, which help to tune their pore sizes and also help the guest molecules to interact with them.…”