Proton magnetic resonance study of diamond nanoparticles decorated by transition metal ions

A. M. Panich, A. Altman, A. I. Shames, V. Yu Osipov, A. E. Aleksenskiy, A. Ya Vul

Research output: Contribution to journalArticlepeer-review

Abstract

We report on a 1H NMR study of diamond nanoparticles decorated by copper and cobalt. Increase in the 1H relaxation rate under decoration results from the interactions of hydrogen nuclear spins of the surface hydrocarbon and hydroxyl groups with paramagnetic copper and cobalt ions. This finding reveals the appearance of paramagnetic Cu2+ or Co2+ ions on the detonation nanodiamond (DND) surface rather than as a separate phase, which is consistent with the 13C NMR data of the same samples. Our results shed light on the mechanism of ion incorporation. A topological model for relative position of paramagnetic Cu2+ or Co2+ ions and hydrogen atoms on the DND surface is suggested. An application of the studied nanomaterials in the field of biomedicine is discussed.

Original languageAmerican English
Article number125303
JournalJournal Physics D: Applied Physics
Volume44
Issue number12
DOIs
StatePublished - 30 Mar 2011

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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