Pore shape modification of a microporous metal–organic framework using high pressure: accessing a new phase with oversized guest molecules

Scott C. McKellar, Jorge Sotelo, Alex Greenaway, John P. S. Mowat, Odin Kvam, Carole A. Morrison, Paul A. Wright, Stephen A. Moggach

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Pressures up to 0.8 GPa have been used to squeeze a range of sterically "oversized" C5-C8 alkane guest molecules into the cavities of a small-pore Sc-based metal?organic framework. Guest inclusion causes a pronounced reorientation of the aromatic rings of one-third of the terephthalate linkers, which act as "torsion springs", resulting in a fully reversible change in the local pore structure. The study demonstrates how pressure-induced guest uptake can be used to investigate framework flexibility relevant to "breathing" behavior and to understand the uptake of guest molecules in MOFs relevant to hydrocarbon separation.
Original languageEnglish
Pages (from-to)466-473
Number of pages8
JournalChemistry of Materials
Volume28
Issue number2
DOIs
Publication statusPublished - 26 Jan 2016

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