Jump to main content
Jump to site search

Issue 6, 2018
Previous Article Next Article

Three isoreticular MOFs derived from nitrogen-functionalized diisophthalate ligands: exploring the positional effect of nitrogen functional sites on the structural stabilities and selective C2H2/CH4 and CO2/CH4 adsorption properties

Author affiliations

Abstract

Understanding the structure–property relationship is conducive to the rational design and synthesis of porous MOFs with better performance. In this work, we constructed three isoreticular MOFs derived from quinoline-functionalized bent diisophthalate ligands as a platform to investigate the positional effect of nitrogen functional sites on the structural stabilities and gas adsorption properties of the resulting MOFs. N2 adsorption experiments performed at 77 K revealed that the three MOF compounds exhibited different stabilities against the framework desolvation, which we think is attributed to different accessibility degrees of nitrogen functional sites leading to different interactions between the frameworks and activated solvent molecules. In addition, as a consequence of the incorporation of nitrogen functional sites into the framework, the most stable MOF ZJNU-84 outperformed its parent compound ZJNU-71 in terms of C2H2 and CO2 uptake capacities and C2H2/CH4 and CO2/CH4 adsorption selectivities, indicating its promising potential for the selective separation of C2H2 and CO2 from CH4. However, the enhancement is not as remarkable as expected due to a low degree of accessibility of nitrogen functional sites in the framework.

Graphical abstract: Three isoreticular MOFs derived from nitrogen-functionalized diisophthalate ligands: exploring the positional effect of nitrogen functional sites on the structural stabilities and selective C2H2/CH4 and CO2/CH4 adsorption properties

Back to tab navigation

Supplementary files

Publication details

The article was received on 26 Mar 2018, accepted on 20 Apr 2018 and first published on 23 Apr 2018


Article type: Research Article
DOI: 10.1039/C8QI00268A
Inorg. Chem. Front., 2018,5, 1423-1431

  •   Request permissions

    Three isoreticular MOFs derived from nitrogen-functionalized diisophthalate ligands: exploring the positional effect of nitrogen functional sites on the structural stabilities and selective C2H2/CH4 and CO2/CH4 adsorption properties

    D. Bai, X. Gao, M. He, Y. Wang and Y. He, Inorg. Chem. Front., 2018, 5, 1423
    DOI: 10.1039/C8QI00268A

Search articles by author

Spotlight

Advertisements