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. 2022 Jun 7;13:3256. doi: 10.1038/s41467-022-30927-y

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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. 1 — a Chemical structures of Y6, Qx-1 and Qx-2 acceptors. b Energy level diagram of the related materials. c UV–vis absorption (abs.) and photoluminescence (PL) spectra of acceptors in the solution. d UV–vis absorption (abs.) and photoluminescence (PL) spectra of acceptors in the films. e, f The molecular packing patterns of Qx-1 and Qx-2 in the single-crystal structure.