Magnetic resonance study of nanodiamonds prepared by laser-assisted technique

We present XRD, 1H and 13C NMR and EPR characterization of nanodiamond samples fabricated using laser treatment of carbon soot. We show that the samples are of high quality and nearly metal- and graphite-free. Variations in the EPR spectra and 13C nuclear spin–lattice relaxation times with increased grain size are obtained.

► First NMR study of nanodiamonds fabricated by laser treatment of carbon soot.
► First EPR study of nanodiamonds fabricated by laser treatment of carbon soot.
► Size dependence of EPR spectra and 13C spin–lattice relaxation time.