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Synthesis, characterization, photophysics and electrophosphorescent applications of phosphorescent platinum cyclometalated complexes with 9-arylcarbazole moieties
Ho, Cheuk-Lam1,2; Wong, Wai-Yeung1,2; Yao, Bing3; Xie, Zhiyuen3; Wang, Lixiang3; Lin, Zhenyang4
2009-08-01
Source PublicationJOURNAL OF ORGANOMETALLIC CHEMISTRY
ISSN0022-328X
Volume694Issue:17Pages:2735-2749
AbstractA series of cyclometalating platinum(II) complexes with substituted 9-arylcarbazolyl chromophores have been synthesized and characterized. These complexes are thermally stable and most of them have been characterized by X-ray crystallography. The phosphorescence emissions of the complexes are dominated by (3)MLCT excited states. The excited state properties of these complexes can be modulated by varying the electronic characteristics of the cyclometalating ligands via substituent effects, thus allowing the emission to be tuned from bright green to yellow, orange and red light. The correlation between the functional properties of these metallophosphors and the results of density functional theory calculations was made. Because of the propensity of the electron-rich carbazolyl group to facilitate hole injection/transport, the presence of such moiety can increase the highest occupied molecular orbital levels and improve the charge balance in the resulting complexes relative to the parent platinum(II) phosphor with 2-phenylpyridine ligand. The solution-processed electrophosphorescent organic light-emitting diodes doped with these platinum-based phosphors have been fabricated which showed a maximum external quantum efficiency of 2.77% for the best device, corresponding to a power efficiency of 3.48 lm/W and a luminance efficiency of 8.49 cd/A. The present work enables the rational design of platinum-carbazolyl electrophosphors by synthetically tailoring the structure of carbazolylpyridine ring that can permit good color-tuning versatility suitable for multi-color display technology. (C) 2009 Elsevier B. V. All rights reserved.
KeywordCarbazole Platinum Complexes Optical Properties Organic Light-emitting Diodes Phosphorescence
DOI10.1016/j.jorganchem.2009.03.002
Indexed BySCI ; IC
Language英语
WOS IDWOS:000267931300013
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:55[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67050
Collection中国科学院化学研究所
Corresponding AuthorHo, Cheuk-Lam
Affiliation1.Hong Kong Baptist Univ, Dept Chem, Kowloon Tong, Hong Kong, Peoples R China
2.Hong Kong Baptist Univ, Ctr Adv Luminescence Mat, Kowloon Tong, Hong Kong, 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 Univ Sci & Technol, Dept Chem, Hong Kong, Hong Kong, Peoples R China
Recommended Citation
GB/T 7714
Ho, Cheuk-Lam,Wong, Wai-Yeung,Yao, Bing,et al. Synthesis, characterization, photophysics and electrophosphorescent applications of phosphorescent platinum cyclometalated complexes with 9-arylcarbazole moieties[J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY,2009,694(17):2735-2749.
APA Ho, Cheuk-Lam,Wong, Wai-Yeung,Yao, Bing,Xie, Zhiyuen,Wang, Lixiang,&Lin, Zhenyang.(2009).Synthesis, characterization, photophysics and electrophosphorescent applications of phosphorescent platinum cyclometalated complexes with 9-arylcarbazole moieties.JOURNAL OF ORGANOMETALLIC CHEMISTRY,694(17),2735-2749.
MLA Ho, Cheuk-Lam,et al."Synthesis, characterization, photophysics and electrophosphorescent applications of phosphorescent platinum cyclometalated complexes with 9-arylcarbazole moieties".JOURNAL OF ORGANOMETALLIC CHEMISTRY 694.17(2009):2735-2749.
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