چكيده فارسي :
Metal−organic frameworks (MOFs) are a class of porous materials with great potentials in catalysis , gas storage, and sensing [1]. An important feature of MOFs over other porous materials is the ability to tune their pore size, topology, and functionality by the deliberate design and selection of organic and inorganic molecular building blocks from which the network is constructed [2]. Taking advantage of this feature, chemists have tried to design and synthesize novel MOFs having particularly desired and predetermined functions and properties. In the present work, we could successfully indicate that subtle substrate selectivity can be induced in the catalytic system by designing a series of isoreticular MOFs with slight structural modifications. Four MOF catalysts possess imine and/or amine basic N-donor pillars bearing phenyl or naphtyl cores owing different hydrophobic character around the basic reaction center were prepared via simple mechano-chemical synthesis. They were characterized thoroughly using TG, IR and PXRD analysis. For the first time, aldol-type condensation reaction of malononitrile with ketone functionalized carbonyl substrates developed in the presence of the basic MOF organocatalysts.
