Acta Optica Sinica, Volume. 29, Issue 5, 1420(2009)
Spectral Characteristics of a New Iridium(Ⅲ) Organic Complex
A new phosphorescent (pq)2Ir(N-phenyl-isobutyramide) complex is synthesized and its spectral characteristics are investigated. The ligands of this complex are phenyl-quinoline and N-phenyl-isobutyramide. The complex is characterized by UV-Vis absorption spectrometry and luminescence spectrometry, and the results show that strong absorption appeared at about 225 nm, 267 nm, 339 nm and 460 nm, respectively. Especially the complex shows single and triplet metal-to-ligand charge transfer from 320 nm to 580 nm. The luminescence spectra indicate that the increase in concentration of the iridium (Ⅲ) organic complex in the solution with the solvent of CH2Cl2 leads to red shift of luminescence spectra. At the excitation wavelength of 460 nm, the luminescence interference of dichloromethane is absent, so the strong metal triplet phosphorescence at around 606 nm of the Ir(Ⅲ) organic complex was generated by itself. Therefore, we conclude that the Ir(Ⅲ) organic complex can be used as a new phosphorescent material for the application in organic electroluminescence area.
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Sun Xiaochen, Zhu Tuo, Chen Guoqing, Ding Yuqiang. Spectral Characteristics of a New Iridium(Ⅲ) Organic Complex[J]. Acta Optica Sinica, 2009, 29(5): 1420