ICCAS OpenIR
Electrophosphorescent Heterobimetallic Oligometallaynes and Their Applications in Solution-Processed Organic Light-Emitting Devices
Zhou, Guijiang1,2; He, Yue1,2; Yao, Bing3; Dang, Jingshuang1,2; Wong, Wai-Yeung4,5,6; Xie, Zhiyuan3; Zhao, Xiang1,2; Wang, Lixiang3
2010
Source PublicationCHEMISTRY-AN ASIAN JOURNAL
ISSN1861-4728
Volume5Issue:11Pages:2405-2414
AbstractBy 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.
KeywordAlkynes Bimetallic Organic Light-emitting Diodes Phosphorescence Polymetallaynes
DOI10.1002/asia.201000341
Indexed BySCI
Language英语
WOS IDWOS:000284515100013
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/71070
Collection中国科学院化学研究所
Corresponding AuthorZhou, Guijiang
Affiliation1.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
Recommended Citation
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.
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