Synthesis and Characterization of High-Efficiency Red Phosphorescent Iridium(III) Complexes with 1-(4-(Trifluoromethyl)phenyl)isoquinoline Ligand
| Autor: | Kai Liu, Shui-Xing Wu, Zhi-Gang Niu, Zi-Wen Tao, Zheng Zhao, Xiao-Han Yang, Gao-Nan Li, Zheng-Rong Mo, Han-Ru Xu, Guang-Ying Chen |
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| Rok vydání: | 2021 |
| Předmět: |
Trifluoromethyl
010405 organic chemistry Ligand chemistry.chemical_element 1-(4-(trifluoromethyl)phenyl)isoquinoline 01 natural sciences Medicinal chemistry 0104 chemical sciences lcsh:Chemistry chemistry.chemical_compound chemistry dft calculation lcsh:QD1-999 red phosphorescence Excited state General Earth and Planetary Sciences Phenol iridium(iii) complex Iridium Isoquinoline Phosphorescence Single crystal General Environmental Science |
| Zdroj: | Acta Chimica Slovenica, Vol 66, Iss 4, Pp 978-986 (2019) |
| ISSN: | 1580-3155 |
| Popis: | Two new tfmpiq-based bis-cyclometalated iridium(III) complexes, [(tfmpiq) 2 Ir(imdzppo)] ( 2a ) and [(tfmpiq) 2 Ir(idzpo)] ( 2b ) (where tfmpiq = 1-(4-(trifluoromethyl)phenyl)isoquinoline, imdzppo = 2-(imidazo[1,2-a]pyridin-2-yl)phenol, idzpo = 2-(2 H -indazol-2-yl)phenol), have been synthesized and fully characterized. The single crystal structure of 2b has been determined. The relationship between the structures and photophysical properties of both complexes are considered, and the DFT calculations have been used to further support the deduction. These Ir(III) complexes emit red light with quantum yields of 39.9–51.9% in degassed CH 2 Cl 2 solution at room temperature. Also, their emission originates from a hybrid 3 MLCT/ 3 LLCT/ 3 LC excited state. All these results show that iridium(III) complexes 2a - 2b are suitable for red-phosphorescent materials in OLEDs. |
| Databáze: | OpenAIRE |
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