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Two-photon-excited ultralong organic room temperature phosphorescence by dual-channel triplet harvesting
Due to inefficient molecular design strategies, two-photon-excited ultralong organic room temperature phosphorescence (TPUOP) has not yet been reported in single-component materials. Herein, we present an innovative design method by dual-channel triplet harvesting to obtain the first bright TPUOP mo...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Royal Society of Chemistry
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6713867/ https://www.ncbi.nlm.nih.gov/pubmed/31489156 http://dx.doi.org/10.1039/c9sc02282a |
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author | Mao, Zhu Yang, Zhan Xu, Chao Xie, Zongliang Jiang, Long Gu, Feng Long Zhao, Juan Zhang, Yi Aldred, Matthew P. Chi, Zhenguo |
author_facet | Mao, Zhu Yang, Zhan Xu, Chao Xie, Zongliang Jiang, Long Gu, Feng Long Zhao, Juan Zhang, Yi Aldred, Matthew P. Chi, Zhenguo |
author_sort | Mao, Zhu |
collection | PubMed |
description | Due to inefficient molecular design strategies, two-photon-excited ultralong organic room temperature phosphorescence (TPUOP) has not yet been reported in single-component materials. Herein, we present an innovative design method by dual-channel triplet harvesting to obtain the first bright TPUOP molecule with a lifetime of 0.84 s and a quantum efficiency of 16.6%. In compound o-Cz the donor and acceptor units are connected at the ortho position of benzophenone, showing intramolecular space charge transfer. Therefore, the two-photon absorption ability is improved due to the enhanced charge transfer character. Moreover, the small energy gap boosts dual-channel triplet harvesting via ultralong thermally activated delayed fluorescence and H-aggregation phosphorescence, which suppresses the long-lived triplet concentration quenching. Through two-photon absorption, a near-infrared laser (808 nm) is able to trigger the obvious ultralong emission under ambient conditions. This research work provides valuable guidance for designing near-infrared-excited ultralong organic room temperature phosphorescence materials. |
format | Online Article Text |
id | pubmed-6713867 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-67138672019-09-05 Two-photon-excited ultralong organic room temperature phosphorescence by dual-channel triplet harvesting Mao, Zhu Yang, Zhan Xu, Chao Xie, Zongliang Jiang, Long Gu, Feng Long Zhao, Juan Zhang, Yi Aldred, Matthew P. Chi, Zhenguo Chem Sci Chemistry Due to inefficient molecular design strategies, two-photon-excited ultralong organic room temperature phosphorescence (TPUOP) has not yet been reported in single-component materials. Herein, we present an innovative design method by dual-channel triplet harvesting to obtain the first bright TPUOP molecule with a lifetime of 0.84 s and a quantum efficiency of 16.6%. In compound o-Cz the donor and acceptor units are connected at the ortho position of benzophenone, showing intramolecular space charge transfer. Therefore, the two-photon absorption ability is improved due to the enhanced charge transfer character. Moreover, the small energy gap boosts dual-channel triplet harvesting via ultralong thermally activated delayed fluorescence and H-aggregation phosphorescence, which suppresses the long-lived triplet concentration quenching. Through two-photon absorption, a near-infrared laser (808 nm) is able to trigger the obvious ultralong emission under ambient conditions. This research work provides valuable guidance for designing near-infrared-excited ultralong organic room temperature phosphorescence materials. Royal Society of Chemistry 2019-06-24 /pmc/articles/PMC6713867/ /pubmed/31489156 http://dx.doi.org/10.1039/c9sc02282a Text en This journal is © The Royal Society of Chemistry 2019 http://creativecommons.org/licenses/by-nc/3.0/ This article is freely available. This article is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported Licence (CC BY-NC 3.0) |
spellingShingle | Chemistry Mao, Zhu Yang, Zhan Xu, Chao Xie, Zongliang Jiang, Long Gu, Feng Long Zhao, Juan Zhang, Yi Aldred, Matthew P. Chi, Zhenguo Two-photon-excited ultralong organic room temperature phosphorescence by dual-channel triplet harvesting |
title | Two-photon-excited ultralong organic room temperature phosphorescence by dual-channel triplet harvesting
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title_full | Two-photon-excited ultralong organic room temperature phosphorescence by dual-channel triplet harvesting
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title_fullStr | Two-photon-excited ultralong organic room temperature phosphorescence by dual-channel triplet harvesting
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title_full_unstemmed | Two-photon-excited ultralong organic room temperature phosphorescence by dual-channel triplet harvesting
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title_short | Two-photon-excited ultralong organic room temperature phosphorescence by dual-channel triplet harvesting
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title_sort | two-photon-excited ultralong organic room temperature phosphorescence by dual-channel triplet harvesting |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6713867/ https://www.ncbi.nlm.nih.gov/pubmed/31489156 http://dx.doi.org/10.1039/c9sc02282a |
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