The inkjet MOF ink was prepared by dissolving 0.5 gm water-soluble MOF powder in 50 ml DI water. Printing solvent was then added to the MOF solution, Figure . The viscosity and surface tension of the print ink were obtained as 2.0 cP and exhibited shear thinning properties, Figure . The surface tension was found 28.59 mN m -1 (Supporting information 4, Figure ); the Ohnesorge number was then calculated as 0.080668 following the below formula: