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

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.

SUBMITTER: Reineck P

PROVIDER: S-EPMC5802785 | biostudies-other | 2018 Feb

REPOSITORIES: biostudies-other

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

Reineck Philipp P Lau Desmond W M DWM Wilson Emma R ER Nunn Nicholas N Shenderova Olga A OA Gibson Brant C BC

Scientific reports 20180206 1

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 ...[more]

PMID: 29410508

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