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    Visible to near-IR fluorescence from single-digit detonation nanodiamonds: excitation wavelength and pH dependence

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    Author
    Reineck, P; Lau, DWM; Wilson, ER; Nunn, N; Shenderova, OA; Gibson, BC
    Date
    2018-02-06
    Source Title
    Scientific Reports
    Publisher
    NATURE PUBLISHING GROUP
    University of Melbourne Author/s
    Gibson, Brant
    Affiliation
    School of Physics
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    Reineck, 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 Status
    Open Access
    URI
    http://hdl.handle.net/11343/255907
    DOI
    10.1038/s41598-018-20905-0
    Abstract
    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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