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. 2016 Jul 1;5(7):e16120. doi: 10.1038/lsa.2016.120

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Copyright © 2016 CIOMP

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/

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Optical images of CNDs (left) and supra-CNDs (right), (a) in the solid state, (b) in solution and (c) under UV irradiation; (d) the absorption spectra (normalized at the absorption maxima in the UV region) of CND and supra-CND, and (e) the fluorescence spectra of CND and supra-CND (0.28 mg ml⁻¹) excited at 340 nm.