Directional Functionalization of MOF-74 Analogs via Ligand Pre-installation

A MOF-74 analog derived from non-DOBDC linkers, Cu(II)-MOF-74-L¹, was synthesized and characterized. Based on this, directionanl functionalizations of the hexagonal pore were introduced through well-designed pre-installation of ligands. By this strategy, two MOF-74 analogs with hydrophobic and hydrophilic surfaces of pore had been achieved by equiping with Cl or OH groups respectively and proved with excellent catalysis and luminescent sensing properties. Herein, the synthetic strategy and functional regulation were reported toward the development of functional MOF-74 materials. An effective functionalization strategy has been developed. Well designed pre-installation of the ligand can easily remain the original MOF stucture under mild conditions. Meanwhile, the insert of active group into MOF can't be achieved by the multi-constituents assembly method rather than the direct way.