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Chemical Science

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

Lizhi Chu,a   Chenglin Ma,a   Li Zhang,a   Yannan Zhou,a   Jingru Song,a   Qikun Sun,a   Shi-Tong Zhang,*b   Wenjun Yang ORCID logo a  and  Shanfeng Xue ORCID logo *a  

* Corresponding authors

a Key Laboratory of Rubber-Plastics of the Ministry of Education, School of Polymer Science & Engineering, Qingdao University of Science and Technology, 53-Zhengzhou Road, Qingdao 266042, P. R. China
E-mail: sfxue@qust.edu.cn

b State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
E-mail: stzhang@jlu.edu.cn

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.

Graphical abstract: Multifunctional oxadiazole-based ultraviolet-emitting materials used as hosts for multicolor phosphorescence

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Article information

DOI
https://doi.org/10.1039/D5SC00374A
Article type
Edge Article
Submitted
15 Jan 2025
Accepted
18 Feb 2025
First published
24 Feb 2025
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2025, Advance Article

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

L. Chu, C. Ma, L. Zhang, Y. Zhou, J. Song, Q. Sun, S. Zhang, W. Yang and S. Xue, Chem. Sci., 2025, Advance Article , DOI: 10.1039/D5SC00374A

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