Modulation of Pore Shape and Adsorption Selectivity by Ligand Functionalization in a Series of “rob”-like Flexible Metal-Organic Frameworks
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2018-08-08Autor
Cepeda Ruiz, Javier
Pérez Mendoza, Manuel
Calahorro, Antonio J.
Casati, Nicola
Aragones Anglada, Marta
Peyman, Z. Moghadam
Fairen-Jimenez, David
Rodríguez Diéguez, Antonio
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Journal of Materials Chemistry A 6(36) : 17409-17416 (2018)
Resumen
We report the synthesis of a new family of four new isoreticular metal–organic frameworks (MOFs) based on
Cu–Cu paddle-wheel building units. The four MOFs contain 1D microchannels modulated by chemical
functionalisation of a dicarboxylate ligand or the use of different bis-4,40-pyridyl-like connectors
behaving as ancillary linkers. A deep analysis of their CO2, H2 and CH4 adsorption properties, combining
both experimental and grand canonical Monte Carlo isotherms as well as in situ synchrotron X-ray
diffraction, shows variable adsorption behaviour towards the studied gases, with some materials acting
as molecular sieves with virtually infinite selectivity.