Covalent organic frameworks (COFs) have emerged as highly crystalline porous organic materials and proved to be the potential candidates for various interesting applications, such as gas adsorption and separation, catalysis,...

Multifunctional metal–organic frameworks (MOFs) rely on the properties of metal centers (nodes) and/or linkers (struts) for their diverse applications in the emerging field of research. Currently, there is a huge demand for MOF materials in the field of capture/fixation/sensing of air pollutants, harmful chemical effluents, and nuclear waste. However, it is a challenging task to utilize one MOF for providing remedies to all these issues. On the basis of our current research activities, we have identified that an oxadiazole moiety–a five-membered ring with two different heteroatoms (O and N)–in a carboxylate linker can be the key to generating such MOF materials for its (a) inherent polarizable nature and molecular docking ability and (b) photoluminescence properties. In this work, we report a 3D MOF {[Co2(oxdz)2(tpbn)(H2O)2]·4H2O} n (1), self-assembled at room temperature from a three-component reaction, with an oxadiazole moiety (where H2oxdz = 4,4′-(1,3,4-oxadiazole-2,5-diyl)dibenzoic acid and tpbn = N,N′,N,”N″’-tetrakis(2-pyridylmethyl)-1,4-diaminobutane). The inherent polarizable nature of the oxadiazole moiety in 1 has been efficiently exploited for (i) multimedia iodine capture and (ii) fixation of CO2 under solvent-free and ambient conditions. On the other hand, the luminescent nature of the framework is found to be an efficient, highly preferred turn-on sensor for the ultra-fast detection of ketones with a limit as low as parts-per-trillion (mesitylene oxide: 447 ppt; cycloheptanone: 4.7 ppb; cyclohexanone: 17.2 ppb; acetylacetone: 18 ppb).

Molecules with solid state luminescence and mechanochromic luminescence properties have attracted immense interest owing to their potential application in the area of organic field-effect transistors (OFETs), organic light-emitting diodes (OLEDs),...

In this work, the influence of solvent and reaction conditions (solvothermal vs room temperature) on the product formation is analyzed with two Zn(II) MOFs, {[Zn(bpaipa)]·DMF·2H2O}n (1) and {[Zn(bpaipa)]·5H2O}n (2), where...

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