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Controlling the Polymorphism and Topology Transformation in Porphyrinic Zirconium Metal-Organic Frameworks via Mechanochemistry

preprint
submitted on 16.09.2019 and posted on 20.09.2019 by Bahar Karadeniz, Dijana Žilić, Igor Huskić, Luzia S. Germann, Athena M. Fidelli, Senada Muratović, Ivor Lončarić, Martin Etter, Robert E. Dinnebier, Dajana Barišić, Nikola Cindro, Timur Islamoglu, Omar K. Farha, Tomislav Friscic, Krunoslav Uzarevic
The mechanochemical approach has been used here for preparation and polymorph resolution in porphyrinic MOF-525/PCN-223 zirconium metal-organic frameworks system, achieving pure target MOF phases in 30-60 minutes milling. In specific reaction condition, MOF-525 forms rapidly by milling but transforms into PCN-223, confirming it to be the kinetic phase in this polymorphic system. ESR measurements showed a strong effect of internal MOF structure on the spin structure of paramagnetic cations coordinated into porphyrin linkers, which show potential for these polymorphic MOFs in spintronics application.

Funding

Croatian Science Foundation Grant 4744

Croatian Science Foundation Grant 3168

Defense Threat Reduction Agency HDTRA1-19-1-0007

NSERC RGPIN-2017-06467

NSERC STPGP 521582-18

History

Email Address of Submitting Author

krunoslav.uzarevic@irb.hr

Institution

Ruder Boskovic Institute

Country

Croatia

ORCID For Submitting Author

0000-0002-7513-6485

Declaration of Conflict of Interest

Authors declare no conflict of interest.

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