Tuning the Mechanical Response of Metal−Organic Frameworks by Defect Engineering

Stefano Dissegna, Pia Vervoorts, Claire Hobday, Tina Duren, Dominik Daisenberger, Andrew Smith, Roland A Fischer, Gregor Kieslich

Research output: Contribution to journalArticlepeer-review

75 Citations (SciVal)
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The incorporation of defects into crystalline materials provides an important tool to fine-tune properties throughout various fields of materials science. We performed high-pressure powder X-ray diffraction experiments, varying pressures from ambient to 0.4 GPa in 0.025 GPa increments to probe the response of defective UiO-66 to hydrostatic pressure for the first time. We observe an onset of amorphization in defective UiO-66 samples around 0.2 GPa and decreasing bulk modulus as a function of defects. Intriguingly, the observed bulk moduli of defective UiO-66(Zr) samples do not correlate with defect concentration, highlighting the complexity of how defects are spatially incorporated into the framework. Our results demonstrate the large impact of point defects on the structural stability of metal-organic frameworks (MOFs) and pave the way for experiment-guided computational studies on defect engineered MOFs.

Original languageEnglish
Pages (from-to)11581-11584
Number of pages4
JournalJournal of the American Chemical Society
Issue number37
Early online date31 Aug 2018
Publication statusPublished - 19 Sept 2018

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry


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