Greenish yellow organic light emitting devices based on novel iridium complexes containing 2-cyclohexenyl-1-phenyl-1H-benzo[d]imidazole

CORC > 青岛生物能源与过程研究所 > 中国科学院青岛生物能源与过程研究所 > 先进有机功能材料团队

	Greenish yellow organic light emitting devices based on novel iridium complexes containing 2-cyclohexenyl-1-phenyl-1H-benzo[d]imidazole
	Han, Liangliang 1; Zhang, Dongyu 2; Zhou, Yuanhang 1; Yang, Ying 1; Woo, Han Young 3; Bai, Fali 1; Yang, Renqiang1
刊名	DYES AND PIGMENTS
	2013-12-01
卷号	99 期号:3 页码:1010-1015
关键词	Organic light emitting devices Greenish yellow phosphorescence 2-Cyclohexenyl-1-phenyl-1H-benzo[d]imidazole Heterocyclometalated iridium complexes Photoluminescence Electroluminescence
英文摘要	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.
学科主题	先进功能有机材料
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Applied ; Engineering, Chemical ; Materials Science, Textiles
研究领域[WOS]	Chemistry ; Engineering ; Materials Science
关键词[WOS]	ALKENYLQUINOLINE LIGANDS ; ELECTROCHEMICAL-CELLS ; SOLID-STATE ; EFFICIENT ; DIODES ; PHOSPHORESCENCE ; EMITTERS
收录类别	SCI
语种	英语
WOS记录号	WOS:000327560200065
公开日期	2014-03-25
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn:8080/handle/337004/1706]
专题	青岛生物能源与过程研究所_先进有机功能材料团队
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.