Separation of p-Divinylbenzene by Selective Room-Temperature Adsorption Inside Mg-CUK-1 Prepared by Aqueous Microwave Synthesis

A new MgII‐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 materi...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2015-04, Vol.54 (18), p.5394-5398
Main Authors: Saccoccia, Beau, Bohnsack, Alisha M., Waggoner, Nolan W., Cho, Kyung Ho, Lee, Ji Sun, Hong, Do-Young, Lynch, Vincent M., Chang, Jong-San, Humphrey, Simon M.
Format: Article
Language:English
Subjects:
Adsorption
divinylbenzene
isomer separation
Isomers
liquid sorption
Magnesium
Materials selection
metal-organic frameworks
Microwaves
Porosity
porous coordination polymers
Pyridines
Single crystals
Synthesis
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Summary:A new MgII‐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. From complex to simple: The porous material Mg‐CUK‐1 has been prepared using an aqueous microwave‐assisted synthetic method. This material contains infinite one‐dimensional pores that show highly selective, room‐temperature adsorption of p‐divinylbenzene (p‐DVB) and other organic compounds from complex mixtures of isomers.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201411862