Jump to main content
Jump to site search


MOF transmetalation beyond cation substitution: defective distortion of IRMOF-9 in the spotlight

Author affiliations

Abstract

The beneficial effects of transmetalation on MOFs' functional behaviours are well-known as it endows the material with novel functionalities. Even though the structural adaptation of the framework to the new metal ion has a great impact on the properties of the resulting material, this subject still remains poorly understood. Herein, we present a detailed structural study by single crystal XRD and scanning electron microscopy on the unprecedented Co-substituted form of a renowned MOF, namely IRMOF-9. The performed Zn-to-Co exchange induced profound changes in the microstructure of the crystals as well as in the framework arrangement. While the evaluation of the first suggests an unconventional transmetalation mechanism involving a phase demolition and re-growth process, the average coordination network shows a remarkable shrinking of the solid with a loss of ∼2.5% of its starting volume. This deformation comes with an increased exposure of the metal sites to the MOF cavities due to a more open disposition of the linkers, whose peculiar disorder agrees with such structural change. These results shed light on the complexity of IRMOF-9(Co), highlighting the importance of structural investigations in transmetalation studies.

Graphical abstract: MOF transmetalation beyond cation substitution: defective distortion of IRMOF-9 in the spotlight

Back to tab navigation

Supplementary files

Publication details

The article was received on 22 Oct 2018, accepted on 12 Dec 2018 and first published on 12 Dec 2018


Article type: Paper
DOI: 10.1039/C8CE01808A
Citation: CrystEngComm, 2019, Advance Article
  •   Request permissions

    MOF transmetalation beyond cation substitution: defective distortion of IRMOF-9 in the spotlight

    S. Canossa, L. Fornasari, N. Demitri, M. Mattarozzi, D. Choquesillo-Lazarte, P. Pelagatti and A. Bacchi, CrystEngComm, 2019, Advance Article , DOI: 10.1039/C8CE01808A

Search articles by author

Spotlight

Advertisements