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Organic Long‐Persistent Luminescence from a Thermally Activated Delayed Fluorescence Compound
https://oist.repo.nii.ac.jp/records/1875
https://oist.repo.nii.ac.jp/records/18751eb836dd-7241-42cb-a90e-21d5e42f8a78
名前 / ファイル | ライセンス | アクション |
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Li-2020-Organic Long-Persistent Luminescence f (1.6 MB)
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Creative Commons Attribution 4.0 International(https://creativecommons.org/licenses/by/4.0/)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-01-14 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Organic Long‐Persistent Luminescence from a Thermally Activated Delayed Fluorescence Compound | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | afterglow | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | charge recombination | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | charge separation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | long-persistent luminescence (LPL) | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | organic long-persistent luminescence (OLPL) | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | thermally activated delayed fluorescence (TADF) | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者(英) |
Li, Wenbo
× Li, Wenbo× Li, Zhaoning× Si, Changfeng× Wong, Michael Y.× Jinnai, Kazuya× Gupta, Abhishek Kumar× Kabe, Ryota× Adachi, Chihaya× Huang, Wei× Zysman‐Colman, Eli× Samuel, Ifor D. W. |
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書誌情報 |
en : Advanced Materials 巻 32, 号 45, p. 2003911, 発行日 2020-10-07 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Organic long-persistent luminescence (OLPL) is one of the most promising methods for long-lived-emission applications. However, present room-temperature OLPL emitters are mainly based on a bimolecular exciplex system which usually needs an expensive small molecule such as 2,8-bis(diphenyl-phosphoryl)dibenzo[b,d]thiophene (PPT) as the acceptor. In this study, a new thermally activated delayed fluorescence (TADF) compound, 3-(4-(9H-carbazol-9-yl)phenyl)acenaphtho[1,2-b]pyrazine-8,9-dicarbonitrile (CzPhAP), is designed, which also shows OLPL in many well-known hosts such as PPT, 2,2',2''-(1,3,5-benzinetriyl)-tris(1-phenyl-1-H-benzimidazole) (TPBi), and poly(methyl methacrylate) (PMMA), without any exciplex formation, and its OLPL duration reaches more than 1 h at room temperature. Combining the low cost of PMMA manufacture and flexible designs of TADF molecules, pure organic, large-scale, color tunable, and low-cost room-temperature OLPL applications become possible. Moreover, it is found that the onset of the 77 K afterglow spectra from a TADF-emitter-doped film is not necessarily reliable for determining the lowest triplet state energy level. This is because in some TADF-emitter-doped films, optical excitation can generate charges (electron and holes) that can later recombine to form singlet excitons during the phosphorescence spectrum measurement. The spectrum taken in the phosphorescence time window at low temperature may consequently consist of both singlet and triplet emission. | |||||
出版者 | ||||||
出版者 | Wiley-VCH GmbH. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0935-9648 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1521-4095 | |||||
PubMed番号 | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | PMID | |||||
関連識別子 | info:pmid/33029892 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1002/adma.202003911 | |||||
権利 | ||||||
権利情報 | © 2020 The Author(s). | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://onlinelibrary.wiley.com/doi/10.1002/adma.202003911 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |