546631-87-2Relevant academic research and scientific papers
Synthesis, structure, photophysical and electrochemical properties of series of new fac-triscyclometallated iridium complexes with carbazole or oxadiazole moieties
Xu, Qiu-Lei,Li, Hong-Yan,Wang, Cheng-Cheng,Zhang, Song,Li, Tian-Yi,Jing, Yi-Ming,Zheng, You-Xuan,Huang, Wei,Zuo, Jing-Lin,You, Xiao-Zeng
experimental part, p. 50 - 57 (2012/10/08)
A series of new fac-triscyclometallated iridium complexes Ir(Ln) 3 (n = 1-6) (L1: 2-{4-[5-phenyl-[1,3,4]oxadiazol-2-yl]- phenyl}-pyridine, L2: 2-{4-[5-(4-tert-butyl-phenyl)-[1,3,4] oxadiazol-2-yl]- phenyl}-pyridine, L3: 9-(4-pyridin-2-yl-phenyl)-9H-carbazole, L4: 1-[4-(5-phenyl-[1,3,4]oxadiazol-2-yl)-phenyl]-isoquinoline, L5: 1-{4-[5-(4-tert-butyl-phenyl)-[1,3,4] oxadiazol-2-yl]-phenyl}-isoquinoline, L6: 9-(4-isoquinolin-1-yl-phenyl)-9H-carbazole) based on Ir(ppy)3 (ppy = phenyl-pyridine) and Ir(piq)3 (piq = 1-phenylisoquinoline) were synthesized from Ir(acac)3 and corresponding ligands by a new and effective way using anthracene as a solvent. Single-crystal X-ray diffraction spectra of three complexes were studied and the iridium centers were found to adopt distorted octahedral coordination geometry. UV-Vis, photoluminescence, cyclic voltammetry were employed for studying the photophysical and electrochemical properties. These complexes exhibit intense phosphorescence in toluene solution at room temperature with high quantum efficiencies (0.07-0.58) and submicrosecond lifetimes (0.57-0.87 μs).
