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. 2022 May 12;13:2646. doi: 10.1038/s41467-022-30425-1

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© The Author(s) 2022

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. 2 — Time-dependent UV–Vis spectra of 1 (a) and 2 (b) upon irradiation. Insert: photos of color changes for crystal samples 1 and powder samples 2; time-dependent photoluminescent spectra of 1 (c) and 2 (d) excited at 283 nm; room temperature ESR spectra of 1 (e) and 2 (f) under a frequency of 9.84 GHz before and after light irradiation; the calculated spatial distributions of HOMO (g) and LUMO (h) of 1 at the B3LYP/6-311G(d) level.