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. 2024 Nov 7;15:9611. doi: 10.1038/s41467-024-53740-1

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© The Author(s) 2024

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — (a) Time-resolved emission spectra, (b) steady-state photoluminescence (room temperature) and phosphorescence (80 K, 80 ms delay) of p-ICz-PI doped in 1 wt.% zeonex films. (c) Time-resolved emission spectra, (d) steady-state photoluminescence (room temperature), and phosphorescence (80 K, 80 ms delay) of o-ICz-PI doped in 1 wt.% zeonex films (λ_exc = 355 nm). Photographs of p-ICz-PI upper right panel and o-ICz-PI lower right panel doped in zeonex (1 wt.%), indicating a clear persistent emission behavior both at RT and 80 K upon excitation with a 355 nm UV source.