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. 2023 Jun 10;14:3443. doi: 10.1038/s41467-023-39161-6

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© The Author(s) 2023

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 Scheme showing the molecular structures of the polymers presented in this study. b Normalised UV–Visible thin-film spectra of the polymers. c PL spectra of polymers films upon 400 nm excitation, corrected by the number of absorbed photons. d Comparison of the PL decay kinetics of polymers films, excited at 404 nm, and recorded at different polymer emission wavelengths, whereby Prompt corresponds to the instrument response function (IRF). e Energy level diagram of the four polymers.