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. 2018 Oct 23;9:4407. doi: 10.1038/s41467-018-06755-4

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 7 — Luminescence properties of SD/Ag44 and SD/Ag50. Varied-temperature emission spectra of SD/Ag44 (a) and SD/Ag50 (b) in solid state under the excitation of 463 nm, Insets: the photographs of SD/Ag44 and SD/Ag50 irradiated by hand-held UV light (λ_ex = 365 nm) at 298 and 77 K