Separation of p-divinylbenzene by selective room-temperature adsorption inside Mg-CUK-1 prepared by aqueous microwave synthesis.
A new Mg(II) -based version of the porous coordination polymer CUK-1 with one-dimensional pore structure was prepared by microwave synthesis in water. Mg-CUK-1 is moisture-stable, thermally stable up to 500 °C, and shows unusual reversible soft-crystal behavior: dehydrated single crystals of the material selectively adsorb a range of organic molecules at ambient temperature and pressure. Both polar and apolar aromatic compounds, including pyridine, benzene, p-xylene, and p-divinylbenzene (p-DVB), are all readily adsorbed, while other isomers from complex mixtures of xylenes or DVBs are selectively excluded. The solvent-loaded structures have been studied by single-crystal X-ray diffraction. Time-dependent liquid sorption experiments using commercially available DVB demonstrate a high and rapid selective adsorption of p-DVB and exclusion of m-DVB and ethylvinylbenzene isomers.
Department of Chemistry, The University of Texas at Austin, Welch Hall 2.204, 105 E. 24thSt. Stop A5300, Austin, TX 78712-1224 (USA).
Beau
B
Saccoccia
Alisha M
AM
Bohnsack
Nolan W
NW
Waggoner
Kyung Ho
KH
Cho
Ji Sun
JS
Lee
Do-Young
DY
Hong
Vincent M
VM
Lynch
Jong-San
JS
Chang
Simon M
SM
Humphrey
divinylbenzene; isomer separation; liquid sorption; metal-organic frameworks; porous coordination polymers