Porous polymers are a class of porous media materials in which monomers form 2D and 3D polymers containing angstrom- to nanometer-scale pores formed by the arrangement of the monomers.
Subclasses include covalent organic frameworks (COFs), hydrogen-bonded organic frameworks (HOFs), metal-organic frameworks (MOFs), and porous organic polymers (POPs).
Covalent organic frameworks are crystalline porous polymers assembled from organic monomers linked through covalent bonds.
[1] Hydrogen-bonded organic frameworks are crystalline porous polymers assembled from organic monomers linked through hydrogen bonds.
[2] Metal-organic frameworks are crystalline porous polymers assembled from organic monomers connected by coordination to metal atom centers.