Guest-Dependent Single-Crystal-to-Single-Crystal Phase Transitions in a Two-Dimensional Uranyl-Based Metal-Organic Framework

Sylvia L. Hanna, Xuan Zhang, Ken Ichi Otake, Riki J. Drout, Peng Li, Timur Islamoglu, Omar K. Farha*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Two-dimensional metal-organic frameworks (2D-MOFs) have shown promise in gas storage and separation applications due to their structural isomerism in response to external stimuli such as temperature, mechanical pressure, and/or guest molecules. Here, we report the guest-dependent phase transitions of a uranyl-based 2D-MOF, NU-1302, observed as single-crystal-to-single-crystal transformations. Different stacking configurations of the same structure were observed in DMF and ethanol, and after supercritical CO 2 activation. The structural isomerism upon exposure to different solvents and when solvent-free demonstrated the ability of this system to respond to guests by shifting neighboring 2D sheets, resulting in the expansion or contraction of one-dimensional channels.

Original languageEnglish (US)
Pages (from-to)506-512
Number of pages7
JournalCrystal Growth and Design
Volume19
Issue number1
DOIs
StatePublished - Jan 2 2019

Funding

O.K.F. acknowledges the support from the U.S. Department of Energy, National Nuclear Security Administration, under Award Number DE-NA0003763. S.L.H. and R.J.D. gratefully acknowledge funding from the International Institute for Nanotechnology (IIN) Ryan Fellowship. The authors also acknowledge the Integrated Molecular Structure Education and Research Center (IMSERC) facilities at Northwestern University where PXRD and SCXRD measurements were performed. We are grateful for helpful scientific insight from Prof. Peter Burns and Dr. Christos Malliakas.

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics

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