Solvent dependent synthesis of micro- and nano- crystalline phosphinate based 1D tubular MOF: structure and CO2 adsorption selectivity

A novel porous tubular 1D-MOF, built from Cu(II), 1,2-bis(4-pyridyl) ethane and P, P'-diphenyl-diphosphinate, has been prepared by an easy and direct self-assembly process in either needle microcrystal or nanorod form depending on the synthesis conditions. The CO2 absorption kinetics drastically increased from the micrometric crystals to the nanorods. The selectivity towards other gases and polar solvents was also investigated.