Issue 11, 2018

A flexible metal–organic framework with adaptive pores for high column-capacity gas chromatographic separation

Abstract

Solvothermal reaction of Zn(NO3)2 and a bifunctional ligand 4-(3,5-dimethyl-1H-pyrazol-4-yl)benzoic acid (H2mpba) using benzene as template gave a two-fold interpenetrated porous framework [Zn2(Hmpba)2(mpba)]·2C6H6 (1·C6H6 or MCF-54), which displayed single-crystal to single-crystal (SCSC) structural transformations upon activation and adsorption of methanol, toluene and cyclohexane. Single-crystal structural analysis and computational simulations demonstrated that compound 1 possesses adaptive pores toward various shapes or arrangements of guests. Using silicone rubber as binder, microcrystalline powders of 1 were coated on the inner surface of a capillary column for gas chromatography, which displayed high separation performances and/or abnormal separation sequences for similar benzene homologues. By virtue of the large loading amount of adsorbent, the column shows extra-large column-capacity, being almost 300 times larger than that of common commercial capillary columns, leading to good selectivities and resolutions even in the presence of large amount of interferents.

Graphical abstract: A flexible metal–organic framework with adaptive pores for high column-capacity gas chromatographic separation

Supplementary files

Article information

Article type
Research Article
Submitted
12 јул. 2018
Accepted
26 авг. 2018
First published
29 авг. 2018

Inorg. Chem. Front., 2018,5, 2777-2783

A flexible metal–organic framework with adaptive pores for high column-capacity gas chromatographic separation

C. He, Z. Ye, Y. Xu, Y. Xie, X. Lian, J. Zhang and X. Chen, Inorg. Chem. Front., 2018, 5, 2777 DOI: 10.1039/C8QI00684A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements