Synthesis, Structure and Properties of Green-emitting Iridium (III) Complexes
Haipeng Xu , Xiangguang Li , Zhifeng Nie , Lihang Yang , Qiaowen Chang , Caixian Yan , Wen Jiang
Journal of Wuhan University of Technology Materials Science Edition ›› 2025, Vol. 40 ›› Issue (3) : 836 -841.
Synthesis, Structure and Properties of Green-emitting Iridium (III) Complexes
Green-emitting iridium (III) complexes were synthesised using chlorobridged dimer(ppy)2Ir2Cl2(ppy)2, 3-hydroxy-2-methyl-γ-pyranone,2-ethyl-3-hydroxy-4-pyranone, and 5-hydroxy-2-(hydroxymethyl)-1,4-pyranone as the auxiliary ligand. The structure of the target product was characterised by nuclear magnetic resonance spectroscopy(1H-NMR), infrared spectroscopy(IR) and mass spectrometry(MS), and its thermal stability, photophysical properties and electrochemical properties were investigated. The results show that the decomposition temperatures of Ir1, Ir2 and Ir3 are 3 49, 292 and 200 °C, respectively. The maximum emission wavelength of Ir1, Ir2 and Ir3 dissolved in dichloromethane is 491 nm. The HOMO energy level of Ir1, Ir2 and Ir3 are 5.39, −5.38, and −5.30 eV. The LUMO energy levels are −2.86, −2.85, and −2.80 eV, respectively.
Wuhan University of Technology and Springer-Verlag GmbH Germany, Part of Springer Nature
/
| 〈 |
|
〉 |
PDF
