Degradation of ZIF-8 in phosphate buffered saline media

Miriam De J. Velásquez-Hernández, Raffaele Ricco, Francesco Carraro, F. Ted Limpoco, Mercedes Linares-Moreau, Erich Leitner, Helmar Wiltsche, Johannes Rattenberger, Hartmuth Schröttner, Philipp Frühwirt, Eduard M. Stadler, Georg Gescheidt, Heinz Amenitsch, Christian J. Doonan*, Paolo Falcaro

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Understanding the stability of zeolitic imidazolate framework-8 (ZIF-8) under physiological conditions is critical in biotechnology and biomedicine for biosensing, biocatalysis, and drug delivery. The use of ZIF-8 has shown that this metal organic framework (MOF) and its derived bio-composites can degrade in presence of buffer solutions. Here we present an in-depth analysis of the structural and chemical changes of pure ZIF-8 particles exposed to phosphate buffered saline (PBS) media. Two different particle sizes (2 μm and 250 nm) were selected and the decomposition operated by 10 mM PBS (aka 1X) was studied using powder X-ray diffraction (PXRD), Fourier transformed infrared spectroscopy (FTIR), time resolved atomic force microscopy (AFM), in situ small angle X-ray scattering (SAXS), and 31P NMR.

Original languageEnglish
Pages (from-to)4538-4544
Number of pages7
JournalCrystEngComm
Volume21
Issue number31
DOIs
Publication statusPublished - 1 Jan 2019

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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