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. 2015 Feb 3;13:8. doi: 10.1186/s12951-015-0071-y

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© Ge et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Optical characterization of Au/Ce NCs. (A) UV–Vis absorption spectroscopy and fluorescence emission spectrum: Curve a and curve b were UV–Vis absorption spectroscopy of Ce³⁺ aqueous solution and Au/Ce NCs, respectively. Curve c and curve d were fluorescence emission spectrum of Au/Ce NCs and Ce³⁺ aqueous solution, respectively, excitation wavelength was 290 nm. (B) Fluorescence lifetime analysis of Au/Ce NCs, excitation was 430 nm.