Metal-organic frameworks MOFs exchange

This is not to say that all has been discovered about these materials. New solids are continually being synthesised, and the rapidly developing field of porous metal organic frameworks (MOFs) is a current example. The applica-bihty of microporous solids is continually being extended within the traditional fields of adsorption, catalysis and ion exchange. One exciting application explores their use as catalysts in the manufacture of fine chemicals. Other emerging areas of research concern their potential use in medicine or in devices that require speeial electronic or optical properties. 

The definition for catalytic purposes of a zeolite reads as follows a crystalline material with micropores and cation-exchange capacity that is insoluble in water and common organic solvents and has sufficient thermal stability that allows removal of all pore-filling agents present in the as-synthesized materials. This definition is narrower than that of the IZA Constitution, which includes mesoporous solids, metal organic frameworks (MOFs), cationic and anionic clays [3]. 

AAS = atomic absorption spectroscopy ATOF-MS = aerosol time-of-flight mass spectrometry 2,6-ndc = 2,6-naphthalenedicarboxylate bdc = 1,4-benzenedicar-boxylate bpdc = 1,3,5-benzenetricarboxylate bpydc = 2,2 -bipyridine-5,5 -dicarboxylate btb = 4,4, 4"-benzene-1,3,5-triylbenzoate btc = 1,3,5-benzenetricarboxylate 3D = three-dimensional dabco = l,4-diaza[2.2.2]bicyclo-octane EDX = energy-dispersive X-ray spectroscopy EXAFS = extended X-ray fine structure Fc = ferrocenyl ICP-AES = inductively coupled plasma atomic emission spectroscopy MOF = metal-organic framework PSD = postsynthetic deprotection PSM = Postsynthetic modification PXRD = Powder X-ray diffraction 1,4-ndc = 1,4-naphthalenedicarboxylate SALE = solvent-assisted linker exchange SBU = secondary building unit ... 

Dalgarno, Thallapally, and coworkers also report a system where exchange of an organic cation for a transition metal cation also leads to grafting of the metal onto the MOF framework. Complex (NH2Me2)2[Mn3(L)2]-9DMF, where L = tetrakis[4-(carboxyphenyl)oxamethyl]methane, has an anionic... 

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