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Longevity gene responsible for robust blue organic materials employing thermally activated delayed fluorescence

The 3(rd)-Gen OLED materials employing thermally-activated delayed fluorescence (TADF) combine advantages of first two for high-efficiency and low-cost devices. Though urgently needed, blue TADF emitters have not met stability requirement for applications. It is essential to elucidate the degradatio...

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Autores principales: Meng, Qing-Yu, Wang, Rui, Wang, Yi-Lei, Guo, Xing-Wei, Liu, Yu-Qi, Wen, Xue-Liang, Yao, Cheng-Yu, Qiao, Juan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10318018/
https://www.ncbi.nlm.nih.gov/pubmed/37400475
http://dx.doi.org/10.1038/s41467-023-39697-7
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author Meng, Qing-Yu
Wang, Rui
Wang, Yi-Lei
Guo, Xing-Wei
Liu, Yu-Qi
Wen, Xue-Liang
Yao, Cheng-Yu
Qiao, Juan
author_facet Meng, Qing-Yu
Wang, Rui
Wang, Yi-Lei
Guo, Xing-Wei
Liu, Yu-Qi
Wen, Xue-Liang
Yao, Cheng-Yu
Qiao, Juan
author_sort Meng, Qing-Yu
collection PubMed
description The 3(rd)-Gen OLED materials employing thermally-activated delayed fluorescence (TADF) combine advantages of first two for high-efficiency and low-cost devices. Though urgently needed, blue TADF emitters have not met stability requirement for applications. It is essential to elucidate the degradation mechanism and identify the tailored descriptor for material stability and device lifetime. Here, via in-material chemistry, we demonstrate chemical degradation of TADF materials involves critical role of bond cleavage at triplet state rather than singlet, and disclose the difference between bond dissociation energy of fragile bonds and first triplet state energy (BDE-E(T1)) is linearly correlated with logarithm of reported device lifetime for various blue TADF emitters. This significant quantitative correlation strongly reveals the degradation mechanism of TADF materials have general characteristic in essence and BDE-E(T1) could be the shared “longevity gene”. Our findings provide a critical molecular descriptor for high-throughput-virtual-screening and rational design to unlock the full potential of TADF materials and devices.
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spelling pubmed-103180182023-07-05 Longevity gene responsible for robust blue organic materials employing thermally activated delayed fluorescence Meng, Qing-Yu Wang, Rui Wang, Yi-Lei Guo, Xing-Wei Liu, Yu-Qi Wen, Xue-Liang Yao, Cheng-Yu Qiao, Juan Nat Commun Article The 3(rd)-Gen OLED materials employing thermally-activated delayed fluorescence (TADF) combine advantages of first two for high-efficiency and low-cost devices. Though urgently needed, blue TADF emitters have not met stability requirement for applications. It is essential to elucidate the degradation mechanism and identify the tailored descriptor for material stability and device lifetime. Here, via in-material chemistry, we demonstrate chemical degradation of TADF materials involves critical role of bond cleavage at triplet state rather than singlet, and disclose the difference between bond dissociation energy of fragile bonds and first triplet state energy (BDE-E(T1)) is linearly correlated with logarithm of reported device lifetime for various blue TADF emitters. This significant quantitative correlation strongly reveals the degradation mechanism of TADF materials have general characteristic in essence and BDE-E(T1) could be the shared “longevity gene”. Our findings provide a critical molecular descriptor for high-throughput-virtual-screening and rational design to unlock the full potential of TADF materials and devices. Nature Publishing Group UK 2023-07-03 /pmc/articles/PMC10318018/ /pubmed/37400475 http://dx.doi.org/10.1038/s41467-023-39697-7 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/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/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Meng, Qing-Yu
Wang, Rui
Wang, Yi-Lei
Guo, Xing-Wei
Liu, Yu-Qi
Wen, Xue-Liang
Yao, Cheng-Yu
Qiao, Juan
Longevity gene responsible for robust blue organic materials employing thermally activated delayed fluorescence
title Longevity gene responsible for robust blue organic materials employing thermally activated delayed fluorescence
title_full Longevity gene responsible for robust blue organic materials employing thermally activated delayed fluorescence
title_fullStr Longevity gene responsible for robust blue organic materials employing thermally activated delayed fluorescence
title_full_unstemmed Longevity gene responsible for robust blue organic materials employing thermally activated delayed fluorescence
title_short Longevity gene responsible for robust blue organic materials employing thermally activated delayed fluorescence
title_sort longevity gene responsible for robust blue organic materials employing thermally activated delayed fluorescence
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10318018/
https://www.ncbi.nlm.nih.gov/pubmed/37400475
http://dx.doi.org/10.1038/s41467-023-39697-7
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