Solution-Processible 2,2-Dimethyl-biphenyl Cored Carbazole Dendrimers as Universal Hosts for Efficient Blue, Green, and Red Phosphorescent OLEDs

doi:10.1002/adfm.201302849

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	Solution-Processible 2,2-Dimethyl-biphenyl Cored Carbazole Dendrimers as Universal Hosts for Efficient Blue, Green, and Red Phosphorescent OLEDs
	Wang, Xingdong 1,2; Wang, Shumeng 1,2; Ma, Zhihua 1; Ding, Junqiao 1; Wang, Lixiang 1; Jing, Xiabin 1; Wang, Fosong 1
刊名	ADVANCED FUNCTIONAL MATERIALS
	2014-06-01
卷号	24 期号:22 页码:3413-3421
关键词	Carbazoles Phosphorescence Host-guest Systems Dendrimers Oleds
ISSN号	1616-301X
DOI	10.1002/adfm.201302849
英文摘要	A series of solution-processible 2,2-dimethyl-biphenyl cored dendrimers, namely G1MP, G2MP, and G3MP, is designed and synthesized by tuning the generation of periphery carbazole dendron. The resulting dendrimers all show excellent solubility in common organic solvents, and their high-quality thin films can be formed via spin-coating with a root-mean-square roughness in the range of 0.38-0.54 nm. G3MP, which contains the third-generation carbazole dendron, has the greatest potential among those made here as an ideal universal host for multicolored triplet emitters. G3MP exhibits good thermal stability, with a glass transition temperature of 368 degrees C, a triplet energy as high as 2.85 eV enough to prevent the loss of triplet excitons, and suitable HOMO/LUMO levels of -5.30/-2.11 eV to facilitate both hole and electron injection and transport. When using G3MP as the host, highly efficient deep-blue, blue, green, and red phosphorescent organic light-emitting diodes (PhOLEDs) are successfully demonstrated, revealing a maximum luminous efficiency up to 18.2, 28.2, 54.0, and 12.7 cd A-1 with the corresponding Commission Internationale de L'Eclairage (CIE) coordinates of (0.15, 0.23), (0.15, 0.35), (0.38, 0.59), and (0.64, 0.34), respectively. The state-of-art performance indicates that dendritic hosts have a favorable prospect of applications in solution-processed white PhOLEDs and full-color displays.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000337490600021
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/50803]
专题	中国科学院化学研究所
通讯作者	Wang, Xingdong
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xingdong,Wang, Shumeng,Ma, Zhihua,et al. Solution-Processible 2,2-Dimethyl-biphenyl Cored Carbazole Dendrimers as Universal Hosts for Efficient Blue, Green, and Red Phosphorescent OLEDs[J]. ADVANCED FUNCTIONAL MATERIALS,2014,24(22):3413-3421.
APA	Wang, Xingdong.,Wang, Shumeng.,Ma, Zhihua.,Ding, Junqiao.,Wang, Lixiang.,...&Wang, Fosong.(2014).Solution-Processible 2,2-Dimethyl-biphenyl Cored Carbazole Dendrimers as Universal Hosts for Efficient Blue, Green, and Red Phosphorescent OLEDs.ADVANCED FUNCTIONAL MATERIALS,24(22),3413-3421.
MLA	Wang, Xingdong,et al."Solution-Processible 2,2-Dimethyl-biphenyl Cored Carbazole Dendrimers as Universal Hosts for Efficient Blue, Green, and Red Phosphorescent OLEDs".ADVANCED FUNCTIONAL MATERIALS 24.22(2014):3413-3421.