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Neutral copper(I) phosphorescent complexes from their ionic counterparts with 2-(2 '-quinolyl)benzimidazole and phosphine mixed ligands
Min, Junhui1,3; Zhang, Qisheng2; Sun, Wei1,3; Cheng, Yanxiang1,2; Wang, Lixiang1
2011
Source PublicationDALTON TRANSACTIONS
ISSN1477-9226
Volume40Issue:3Pages:686-693
AbstractNeutral mononuclear Cu-I complexes and their counterparts with counterion, i.e. Cu(qbm)(PPh3)(2), Cu(qbm)(DPEphos), [Cu(Hqbm)(PPh3)(2)](BF4) and [Cu(Hqbm)(DPEphos)](BF4), where Hqbm = 2-(2'-quinolyl) benzimidazole, DPEphos = bis[2-(diphenylphosphino)phenyl] ether, have been synthesized and characterized by X-ray structure analyses. All of the four complexes in solid state exhibit a strong phosphorescence band in the orange spectral region at room temperature. The photophysical properties of these complexes in both methylene chloride solution and poly(methyl methacrylate) film have been studied. Compared to the related cationic complexes, the neutral ones show blue-shifted emissions and longer lifetimes that can be attributed to the additional ligand-centered pi-pi* transition beside traditional metal-to-ligand charge-transfer (MLCT). By doping these complexes in N-(4-(carbazol-9-yl) phenyl)-3,6-bis(carbazol-9-yl) carbazole (TCCz), multilayer organic light-emitting diodes (OLEDs) were fabricated with the device structure of ITO/PEDOT/TCCz: Cu-I (10 wt%)/BCP/Alq(3)/LiF/Al. The neutral complex Cu(qbm)(DPEphos) exhibits a higher current efficiency, up to 8.87 cd A(-1), than that (5.58 cd A(-1)) of its counterpart [Cu(Hqbm)(DPEphos)](BF4).
DOI10.1039/c0dt01031f
Indexed BySCI
Language英语
WOS IDWOS:000285748800018
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:98[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/73590
Collection中国科学院化学研究所
Corresponding AuthorWang, Lixiang
Affiliation1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Min, Junhui,Zhang, Qisheng,Sun, Wei,et al. Neutral copper(I) phosphorescent complexes from their ionic counterparts with 2-(2 '-quinolyl)benzimidazole and phosphine mixed ligands[J]. DALTON TRANSACTIONS,2011,40(3):686-693.
APA Min, Junhui,Zhang, Qisheng,Sun, Wei,Cheng, Yanxiang,&Wang, Lixiang.(2011).Neutral copper(I) phosphorescent complexes from their ionic counterparts with 2-(2 '-quinolyl)benzimidazole and phosphine mixed ligands.DALTON TRANSACTIONS,40(3),686-693.
MLA Min, Junhui,et al."Neutral copper(I) phosphorescent complexes from their ionic counterparts with 2-(2 '-quinolyl)benzimidazole and phosphine mixed ligands".DALTON TRANSACTIONS 40.3(2011):686-693.
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