Electrophosphorescent Heterobimetallic Oligometallaynes and Their Applications in Solution-Processed Organic Light-Emitting Devices

doi:10.1002/asia.201000341

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	Electrophosphorescent Heterobimetallic Oligometallaynes and Their Applications in Solution-Processed Organic Light-Emitting Devices
	Zhou, Guijiang 1,2; He, Yue 1,2; Yao, Bing 3; Dang, Jingshuang 1,2; Wong, Wai-Yeung 4,5,6; Xie, Zhiyuan 3; Zhao, Xiang 1,2; Wang, Lixiang 3
刊名	CHEMISTRY-AN ASIAN JOURNAL
	2010
卷号	5 期号:11 页码:2405-2414
关键词	Alkynes Bimetallic Organic Light-emitting Diodes Phosphorescence Polymetallaynes
ISSN号	1861-4728
DOI	10.1002/asia.201000341
英文摘要	By combining the iridium-(III) ppy-type complex (Hppy = 2-phenylpyridine) with a square-planar platinum(II) unit, some novel phosphorescent oligometallaynes bearing dual metal centers (viz. Ir-III and Pt-II) were developed by combining trans-[Pt-(PBu3)(2)Cl-2] with metalloligands of iridium possessing bifunctional pendant acetylene groups. Photophysical and computational studies indicated that the phosphorescent excited states arising from these oligometallaynes can be ascribed to the triplet emissive Ir-III ppy-type chromophore, owing to the obvious trait (such as the longer phosphorescent lifetime at 77 K) also conferred by the Pt-III center. So, the two different metal centers show a synergistic effect in governing the photophysical behavior of these heterometallic oligometallaynes. The inherent nature of these amorphous materials renders the fabrication of simple solution-processed doped phosphorescent organic light-emitting diodes (PHOLEDs) feasible by effectively blocking the close-packing of the host molecules. Saliently, such a synergistic effect is also important in affording decent device performance for the solution-processed PHOLEDs. A maximum brightness of 3356 cd m(-2) (or 2708 cd m(-2)), external quantum efficiency of 0.50% (or 0.67%), luminance efficiency of 1.59 cd A(-1) (or 1.55 cd A(-1)), and power efficiency of 0.60 Lm W-1 (or 0.55 Lm W-1) for the yellow (or orange) phosphorescent PHOLEDs can be obtained. These results show the great potential of these bimetallic emitters for organic light-emitting diodes.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000284515100013
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/71069]
专题	中国科学院化学研究所
通讯作者	Zhou, Guijiang
作者单位	1.Xi An Jiao Tong Univ, Fac Sci, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Xian 710049, Peoples R China 2.Xi An Jiao Tong Univ, Fac Sci, Dept Chem, Xian 710049, Peoples R China 3.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 4.Hong Kong Baptist Univ, Inst Mol Funct Mat, Kowloon Tong, Hong Kong, Peoples R China 5.Hong Kong Baptist Univ, Dept Chem, Kowloon Tong, Hong Kong, Peoples R China 6.Hong Kong Baptist Univ, Ctr Adv Luminescence Mat, Kowloon Tong, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Guijiang,He, Yue,Yao, Bing,et al. Electrophosphorescent Heterobimetallic Oligometallaynes and Their Applications in Solution-Processed Organic Light-Emitting Devices[J]. CHEMISTRY-AN ASIAN JOURNAL,2010,5(11):2405-2414.
APA	Zhou, Guijiang.,He, Yue.,Yao, Bing.,Dang, Jingshuang.,Wong, Wai-Yeung.,...&Wang, Lixiang.(2010).Electrophosphorescent Heterobimetallic Oligometallaynes and Their Applications in Solution-Processed Organic Light-Emitting Devices.CHEMISTRY-AN ASIAN JOURNAL,5(11),2405-2414.
MLA	Zhou, Guijiang,et al."Electrophosphorescent Heterobimetallic Oligometallaynes and Their Applications in Solution-Processed Organic Light-Emitting Devices".CHEMISTRY-AN ASIAN JOURNAL 5.11(2010):2405-2414.