Multifunctional oxadiazole-based ultraviolet-emitting materials used as hosts for multicolor phosphorescence†

IF 7.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Chemical Science Pub Date : 2025-02-24 DOI:10.1039/D5SC00374A
Lizhi Chu, Chenglin Ma, Li Zhang, Yannan Zhou, Jingru Song, Qikun Sun, Shi-Tong Zhang, Wenjun Yang and Shanfeng Xue
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Abstract

Highly efficient ultraviolet materials and host materials for organic light-emitting diodes (OLEDs) have been gaining increasing attention in recent years. In this study, three donor–acceptor (D–A) molecules with different HLCT properties were designed and synthesized using oxadiazole as an electron acceptor. Not only does the molecule m-PIOXZ exhibit efficient ultraviolet electroluminescence, but it can also serve as the host material for high-efficiency phosphorescent OLEDs (PhOLEDs) with low roll-off. As a result, high external quantum efficiency (EQE) and long operational lifetimes are obtained in green, yellow and red emissive PhOLEDs, providing new insights for developing high-efficiency, low roll-off, and full-color OLEDs.

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多功能恶二唑基紫外发射材料的多色磷光寄主研究
近年来,高效紫外材料和有机发光二极管(oled)宿主材料越来越受到人们的关注。本研究以恶二唑为电子受体,设计并合成了三种具有不同HLCT性质的给受体(D-A)分子。分子m-PIOXZ不仅表现出高效的紫外电致发光,而且还可以作为低滚降的高效磷光oled (PhOLEDs)的主体材料。因此,在绿色、黄色和红色发光oled中获得了高外量子效率(EQE)和长工作寿命,为开发高效、低滚降和全彩oled提供了新的见解。
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来源期刊
Chemical Science
Chemical Science CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
14.40
自引率
4.80%
发文量
1352
审稿时长
2.1 months
期刊介绍: Chemical Science is a journal that encompasses various disciplines within the chemical sciences. Its scope includes publishing ground-breaking research with significant implications for its respective field, as well as appealing to a wider audience in related areas. To be considered for publication, articles must showcase innovative and original advances in their field of study and be presented in a manner that is understandable to scientists from diverse backgrounds. However, the journal generally does not publish highly specialized research.
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