Synthesis and properties of furan-based imine-linked porous organic frameworks

Abstract

Furan-based porous organic frameworks (FOFs) were prepared by condensation of biomass-derived 2,5-diformylfuran (DFF) and diamines via the formation of imine linkages, which are insoluble in water and common organic solvents and can keep stable around 300 °C under N₂ atmosphere. The materials obtained by DFF being condensed with nonlinear diamines show higher specific surface areas and micropore volumes than that of with linear diamines. In the adsorption of CO₂, the capacity of the FOFs largely depends on their specific surface areas and micropore volumes.