Modification and intercalation of layered zirconium phosphates: a solid-state NMR monitoring

Magn Reson Chem. 2017 Jul;55(7):648-654. doi: 10.1002/mrc.4568. Epub 2017 Jan 19.

Abstract

Several layered zirconium phosphates treated with Zr(IV) ions, modified by monomethoxy-polyethyleneglycol-monophosphate and intercalated with doxorubicin hydrochloride have been studied by solid-state MAS NMR techniques. The organic components of the phosphates have been characterized by the 13 C{1 H} CP MAS NMR spectra compared with those of initial compounds. The multinuclear NMR monitoring has provided to establish structure and covalent attachment of organic/inorganic moieties to the surface and interlayer spaces of the phosphates. The MAS NMR experiments including kinetics of proton-phosphorus cross polarization have resulted in an unusual structure of zirconium phosphate 6 combining decoration of the phosphate surface by polymer units and their partial intercalation into the interlayer space. Copyright © 2016 John Wiley & Sons, Ltd.

Keywords: cross polarization; intercalation; solid-state NMR; zirconium phosphates.

MeSH terms

  • Doxorubicin / chemistry
  • Magnetic Resonance Spectroscopy
  • Polyethylene Glycols / chemistry
  • Surface Properties
  • Zirconium / chemistry*

Substances

  • zirconium phosphate
  • Polyethylene Glycols
  • Doxorubicin
  • Zirconium