%0 Journal Article
%A Karadeniz, Bahar
%A Žilić, Dijana
%A Huskić, Igor
%A Germann, Luzia S.
%A Fidelli, Athena M.
%A Muratović, Senada
%A Lončarić, Ivor
%A Etter, Martin
%A Dinnebier, Robert E.
%A Barišić, Dajana
%A Cindro, Nikola
%A Islamoglu, Timur
%A Farha, Omar K.
%A Friscic, Tomislav
%A Užarević, Krunoslav
%T Controlling the Polymorphism and Topology Transformation in Porphyrinic Zirconium Metal–Organic Frameworks via Mechanochemistry
%J Journal of the American Chemical Society
%V 141
%N 49
%@ 1520-5126
%C Washington, DC
%I American Chemical Society
%M PUBDB-2019-05166
%P 19214 - 19220
%D 2019
%Z © American Chemical Society
%X Tetratopic porphyrin-based metal−organicframeworks (MOFs) represent a particularly interestingsubclass of zirconium MOFs due to the occurrence ofseveral divergent topologies. Control over the targettopology is a demanding task, and reports often showproducts containing phase contamination. We demonstratehow mechanochemistry can be exploited forcontrolling the polymorphism in 12-coordinated porphyriniczirconium MOFs, obtaining pure hexagonal PCN-223and cubic MOF-525 phases in 20−60 min of milling. Thereactions are mainly governed by the milling additives andthe zirconium precursor. In situ monitoring by synchrotronpowder X-ray diffraction revealed that specificreaction conditions resulted in the formation of MOF-525 as an intermediate, which rapidly converted to PCN-223 upon milling. Electron spin resonance measurementsrevealed significant differences between the spectra ofparamagnetic centers in two polymorphs, showing apotential of polymorphic Zr-MOFs as tunable supports inspintronics applications.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:31747754
%U <Go to ISI:>//WOS:000502687800005
%R 10.1021/jacs.9b10251
%U https://bib-pubdb1.desy.de/record/429646