Affiliation:
1. Key Laboratory of Cluster Science Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 102488 P. R. China
2. State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and Devices School of Materials Science and Engineering South China University of Technology Guangzhou 510640 P. R. China
3. School of Chemistry and Chemical Engineering Jiangxi Science and Technology Normal University Nanchang Jiangxi 330013 P. R. China
Abstract
AbstractOrganic molecules with fluorescence‐phosphorescence dual‐emission have attracted significant attention for their potential applications in white organic light‐emitting diodes (WOLEDs). Herein, donor–accepter molecules, Mes*BA‐Cz and FXylBA‐Cz, are designed and synthesized, and the photoluminescence of these two compounds in solid state exhibits fluorescence‐phosphorescence dual‐emission. Through the single crystal study, the phosphorescent emission is mainly caused by the molecular stacking in the crystalline state, which is beneficial for aggregation‐induced intersystem crossing. Dual emission behavior further caused the mechanochromism of the two compounds, with emission color changed between amorphous and crystalline state. White light photoluminescence with CIE coordinates of (0.33, 0.34) is achieved by doping FXylBA‐Cz in the poly (methyl methacrylate) film. Furthermore, a WOLED based on FXylBA‐Cz is manufactured with CIE coordinates of (0.31, 0.33), and the external quantum efficiency (EQE) reached 0.49%.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Guangdong Province
Beijing Institute of Technology Research Fund Program for Young Scholars
Subject
Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献