Abstract
Three novel orange emission supramolecular phosphorescent polymers (SPPs) with cationic iridium complex have been developed for polymer light-emitting diodes (PLEDs) through efficient self-assembly. The supramolecular assembly process was monitored by 1H nuclear magnetic resonance (1H NMR) and viscosity measurement. These SPPs give orange phosphorescence with a peak at about 595 nm and display good thermal properties with a glass-transition temperature (Tg) about 90 °C. The single-emissive-layer PLEDs with charged SPPs exhibited the highest device efficiency of 2.81 cd A−1 with the Commission Internationale de L’Eclairage coordinates of (0.58, 0.40). The present work reported the charged SPPs self-assembled by the cationic iridium complex for the first time and provided a new guide to develop orange emitters for solution-processable optoelectronic devices.
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Acknowledgements
The work was financially supported by the National Natural Science Foundation of China (No. 51763013), the Natural Science Foundation of Jiangxi Province (No. 20192BAB203011), the Foundation of Jiangxi Educational Committee (No. GJJ200301) and the Open Project Program of Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University (No. KLFS-KF-201927).
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Huang, Y., Huang, S., Li, X. et al. Supramolecular Phosphorescent Polymer Based on Cationic Iridium Complexes for Polymer Light-Emitting Diodes. J Inorg Organomet Polym 32, 1499–1505 (2022). https://doi.org/10.1007/s10904-021-02211-x
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DOI: https://doi.org/10.1007/s10904-021-02211-x