| Greenish yellow organic light emitting devices based on novel iridium complexes containing 2-cyclohexenyl-1-phenyl-1H-benzo[d]imidazole | |
Han, Liangliang1 ; Zhang, Dongyu2; Zhou, Yuanhang1; Yang, Ying1; Woo, Han Young3; Bai, Fali1; Yang, Renqiang1
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| 2013-12-01 | |
| 发表期刊 | DYES AND PIGMENTS
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| 卷号 | 99期号:3页码:1010-1015 |
| 摘要 | 2-Cyclohexenyl-1-phenyl-1H-benzo[d]imidazole (Hcyclopbi) and its heterocyclometalated iridium complexes bis[2-cyclohexenyl-1-phenyl-1H-benzo[d]imidazole](acetylacetonate)iridium(III) [(cyclopbi)(2)Iracac] and bis[2-cyclohexenyl-1-phenyl-1H-benzo[d]imidazole][2-(3-(trifluoromethyl)-1H-pyrazol-5-yl)pyridinate]iridium(III) [(cyclopbi)(2)IrCF3] were firstly designed and synthesized. Owing to the strong electron withdrawing ability of 2-(3-(trifluoromethyl)-1H-pyrazol) compared to that of acetylacetonate, blue shifted phosphorescence 542 nm was obtained for (cyclopbi)(2)IrCF3 compared to that of (cyclopbi)(2)Iracac 545 nm with photoluminescence quantum yields (phi) 0.22 and 0.25, respectively, as well the highest occupied molecular orbit (HOMO) energy level was estimated to be -5.10 eV for (cyclopbi)(2)IrCF3, 0.19 eV lower than that of -4.91 eV for (cyclopbi)(2)Iracac. When (cyclopbi)(2)Iracac was doped into 4,4'-bis(9H-carbazol-9-yl)biphenyl (CBP) as the emitting layer, high efficiency organic light emitting devices (OLEDs) were obtained with maximum current efficiency (eta(c)) 22.3 cd/A at 3.1 mA/cm(2) and maximum brightness 16,300 cd/m(2) at 171.6 mA/cm(2), which were comparable to those of bis(2-phenylpyridine)(acetylacetonate)iridium(III) [(ppy)(2)Iracac] with the same device structure. This results indicate that (cyclopbi)(2)Iracac and (cyclopbi)(2)IrCF3 are potential phosphorescent dyes used for OLEDs. (C) 2013 Elsevier Ltd. All rights reserved. |
| 文章类型 | Article |
| 关键词 | Organic Light Emitting Devices Greenish Yellow Phosphorescence 2-cyclohexenyl-1-phenyl-1h-benzo[d]Imidazole Heterocyclometalated Iridium Complexes Photoluminescence Electroluminescence |
| 学科领域 | 先进功能有机材料 |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| DOI | 10.1016/j.dyepig.2013.08.011 |
| 关键词[WOS] | ALKENYLQUINOLINE LIGANDS ; ELECTROCHEMICAL-CELLS ; SOLID-STATE ; EFFICIENT ; DIODES ; PHOSPHORESCENCE ; EMITTERS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Chemistry ; Engineering ; Materials Science |
| WOS类目 | Chemistry, Applied ; Engineering, Chemical ; Materials Science, Textiles |
| WOS记录号 | WOS:000327560200065 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qibebt.ac.cn/handle/337004/1706 |
| 专题 | 先进有机功能材料研究组 |
| 作者单位 | 1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China 2.Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Suzhou 215123, Peoples R China 3.Pusan Natl Univ, Dept Cogno Mechatron Engn WCU, Miryang 627706, South Korea |
| 推荐引用方式 GB/T 7714 | Han, Liangliang,Zhang, Dongyu,Zhou, Yuanhang,et al. Greenish yellow organic light emitting devices based on novel iridium complexes containing 2-cyclohexenyl-1-phenyl-1H-benzo[d]imidazole[J]. DYES AND PIGMENTS,2013,99(3):1010-1015. |
| APA | Han, Liangliang.,Zhang, Dongyu.,Zhou, Yuanhang.,Yang, Ying.,Woo, Han Young.,...&Yang, Renqiang.(2013).Greenish yellow organic light emitting devices based on novel iridium complexes containing 2-cyclohexenyl-1-phenyl-1H-benzo[d]imidazole.DYES AND PIGMENTS,99(3),1010-1015. |
| MLA | Han, Liangliang,et al."Greenish yellow organic light emitting devices based on novel iridium complexes containing 2-cyclohexenyl-1-phenyl-1H-benzo[d]imidazole".DYES AND PIGMENTS 99.3(2013):1010-1015. |
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