Visible to near-IR fluorescence from single-digit detonation nanodiamonds: excitation wavelength and pH dependence
AuthorReineck, P; Lau, DWM; Wilson, ER; Nunn, N; Shenderova, OA; Gibson, BC
Source TitleScientific Reports
PublisherNATURE PUBLISHING GROUP
University of Melbourne Author/sGibson, Brant
AffiliationSchool of Physics
Document TypeJournal Article
CitationsReineck, P., Lau, D. W. M., Wilson, E. R., Nunn, N., Shenderova, O. A. & Gibson, B. C. (2018). Visible to near-IR fluorescence from single-digit detonation nanodiamonds: excitation wavelength and pH dependence. SCIENTIFIC REPORTS, 8 (1), https://doi.org/10.1038/s41598-018-20905-0.
Access StatusOpen Access
Detonation nanodiamonds are of vital significance to many areas of science and technology. However, their fluorescence properties have rarely been explored for applications and remain poorly understood. We demonstrate significant fluorescence from the visible to near-infrared spectral regions from deaggregated, single-digit detonation nanodiamonds dispersed in water produced via post-synthesis oxidation. The excitation wavelength dependence of this fluorescence is analyzed in the spectral region from 400 nm to 700 nm as well as the particles' absorption characteristics. We report a strong pH dependence of the fluorescence and compare our results to the pH dependent fluorescence of aromatic hydrocarbons. Our results significantly contribute to the current understanding of the fluorescence of carbon-based nanomaterials in general and detonation nanodiamonds in particular.
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