947192-78-1Relevant articles and documents
IrIII(C^N)2(P-donor ligand)Cl-type complexes bearing functional groups and showing aggregation-induced phosphorescence emission (AIPE) behavior for highly efficient OLEDs
Jiao, Bo,Jin, Yulin,Li, Bochen,Li, Huiying,Sun, Yuanhui,Yang, Xiaolong,Yao, Chaofan,Zhou, Guijiang
supporting information, p. 12330 - 12341 (2021/09/30)
Based on the P-donor ligands of triphenylphosphine and triethylphosphine, a series of IrIII(C^N)2(P-donor ligand)Cl-type complexes bearing C^N ligands with functional groups of diphenylamine and carbazole have been successfully prepared. In dilute solution, these complexes exhibit low phosphorescence quantum yields (ΦP), while much higherΦPvalues can be obtained in doped films, indicating their aggregation-induced phosphorescence emission (AIPE) potential. On checking the PL spectra of these IrIII(C^N)2(P-donor ligand)Cl-type complexes in a mixture of THF and water, it has been found that the phosphorescence intensity can be effectively enhanced by increasing the water volume ratio (fw) in THF solution, confirming the obvious AIPE property. In addition, the diphenylamine group can effectively promote the hole injection ability of the concerned complexes, which can benefit the electroluminescence properties. Hence, these IrIII(C^N)2(P-donor ligand)Cl-type complexes can show very impressive EL efficiencies in solution-processed OLEDs with a maximum external quantum efficiency (ηext) of 12.8%, a current efficiency (ηL) of 47.5 cd A?1and a power efficiency (ηP) of 39.1 lm W?1, representing the best EL results ever achieved by these types of complexes. All these results not only provide valuable information for developing new AIPE molecules but also represent an important way to develop new phosphorescent Ir(iii) complexes with high EL ability.
Novel organic metal iridium complex, preparation method thereof, and organic electroluminescent device containing metal iridium complex
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Paragraph 0069-0075, (2020/03/06)
The invention discloses a novel organic metal iridium complex, a preparation method thereof, and an organic electroluminescent device containing the metal iridium complex. The structural general formula of the novel organic metal iridium complex is shown in the specification. According to the novel metal iridium complex provided by the invention, the compound wavelength is adjusted by selecting specific heterocyclic ligand for combination, and after the obtained organic metal compound is used in an organic electroluminescent device, the light-emitting efficiency of the organic electroluminescent device is improved, and the service life is long.
Two novel bipolar Ir(III) complexes based on 9-(4-(pyridin-2-yl)phenyl)-9H-carbazole and N-heterocyclic ligand
Huixia, Xu,Fang, Wang,Kexiang, Wang,Peng, Sun,Jie, Li,Tingting, Yang,Hua, Wang,Bingshe, Xu
, p. 316 - 322 (2017/07/22)
Two novel bipolar Ir(III) complexes named (Czppy)2Ir(tfmptz) and (Czppy)2Ir(pptz) were synthesized and characterized, where the Czppy is 9-(4-(pyridin-2-yl)phenyl)-9H-carbazole, tfmptz refers to 2-(3-(trifluoromethyl)-1H-1,2,4-triazol-5-yl)pyridine and Hpptz represents 2-(1H-tetrazol-5-yl)pyridine, respectively. Their molecular structures were confirmed by 1H NMR and photophysical were investigated. The performances in phosphorescent organic light emitting devices (PhOLEDs) were characterized by a heavy doping concentration of 20 wt% in host as emitting layer. The results suggest that the number of nitrogen atoms in ancillary has no obvious effects on their photophysical properties. Both (Czppy)2Ir(tfmptz) and (Czppy)2Ir(pptz) display the blue-green emission with the peaks at 492, 526 nm. The performances of complexes (Czppy)2Ir(tfmptz) in PhOLEDs superior to that of the (Czppy)2Ir(pptz) due to the poor thermal stability.
