- AutorIn
- Maria E. Schweinefuß
- Sergej Springer
- Igor A. BaburinTechnische Universität Dresden, Institut für Physikalische Chemie und Elektrochemie, Dresden, Germany
- Todor Hikov
- Klaus Huber
- Stefano Leoni
- Michael Wiebcke
- Titel
- Zeolitic imidazolate framework-71 nanocrystals and a novel SOD-type polymorph
- Untertitel
- solution mediated phase transformations, phase selection via coordination modulation and a density functional theory derived energy landscape
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-361027
- Quellenangabe
- Dalton transactions Erscheinungsort: London
Verlag: Royal Society of Chemistry
Erscheinungsjahr: 2014
Jahrgang: 43
Heft: 9
Seiten: 3528-3536
E-ISSN: 1364-5447 - Erstveröffentlichung
- 2014
- Abstract (EN)
- We report a rapid additive-free synthesis of nanocrystals (NCs) of RHO-type ZIF-71 (1) of composition [Zn(dcim)₂] (dcim = 4,5-dichloroimidazolate) in 1-propanol as solvent at room temperature. NC-1 has a size of 30–60 nm and exhibits permanent microporosity with a surface area (SBET = 970 m² g−¹) comparable to that of microcrystalline material. When kept under the mother solution NC-1 undergoes transformation into a novel SOD-type polymorph (2), which in turn converts into known ZIF-72 (3) with lcs topology. It is shown that microcrystals (MCs) of 2 can be favourably synthesised using 1-methylimidazole as a coordination modulator. NC-2 with size <200 nm was prepared using NC-ZIF-8 as a template with SOD topology in a solvent assisted ligand exchange-related process. DFT-assisted Rietveld analysis of powder XRD data revealed that novel polymorph 2 possesses an unusual SOD framework conformation. 2 was further characterised with regard to microporosity (SBET = 597 m² g−¹) and thermal as well as chemical stability. DFT calculations were performed to search for further potentially existing but not-yet synthesised polymorphs in the [Zn(dcim)₂] system.
- Andere Ausgabe
- Link zum Artikel, der zuerst in der Zeitschrift 'Dalton transactions' erschienen ist.
DOI: 10.1039/c3dt52992d - Freie Schlagwörter (DE)
- additivfreie Synthese von Nanokristallen (NCs), Mikroporosität, Ligandenaustauschprozess, synthetisierte Polymorphe
- Freie Schlagwörter (EN)
- additive-free synthesis of nanocrystals (NCs), microporosity, ligand exchange-related process, synthesised polymorphs
- Klassifikation (DDC)
- 540
- Verlag
- Royal Society of Chemistry, London
- Förder- / Projektangaben
- Deutsche Forschungsgemeinschaft Crystalline Non-equilibrium Phases
ID: 1415 - Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa2-361027
- Veröffentlichungsdatum Qucosa
- 27.11.2019
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis