Synthesis, characterization and electrophosphorescent properties of mononuclear platinum(II) complexes based on 2-phenylbenzoimidazole derivatives

doi:10.1016/j.jorganchem.2009.04.024

CORC > 化学研究所 > 中国科学院化学研究所

	Synthesis, characterization and electrophosphorescent properties of mononuclear platinum(II) complexes based on 2-phenylbenzoimidazole derivatives
	Li, Hui 1,2; Ding, Junqiao 1; Xie, Zhiyuan 1; Cheng, Yanxiang 1; Wang, Lixiang 1
刊名	JOURNAL OF ORGANOMETALLIC CHEMISTRY
	2009-08-01
卷号	694 期号:17 页码:2777-2785
关键词	Platinum 2-phenylbenzoimidazole Phosphorescence Spin-coating Organic Light-emitting Diode
ISSN号	0022-328X
DOI	10.1016/j.jorganchem.2009.04.024
英文摘要	The rational design, synthesis and characterization of five phosphorescent platinum complexes [(C boolean AND N) Pt(acac)] [Hacac = acetylacetone, HC boolean AND N = 1-methyl-2-(4-fluorophenyl)benzoimidazole (H-FMBI), 1-methyl-2-phenylbenzoimidazole (H-MBI), 1,2-diphenyl-benzoimidazole (H-PBI), 1-(4-(3,6-di-t-butylcarbazol-9-yl)) phenyl-2-phenylbenzoimidazole (t-BuCz-H-PBI), and 1-(4-(3,6-di-(3,6-di-t-butyl-carbazol-9-yl))carbazol-9-yl) phenyl-2-phenylbenzoimidazole (t-BuCzCz-H-PBI)] have been discussed. The crystal structure of (MBI) Pt(acac) shows a nearly ideal square planar geometry around Pt atom and the weak intermolecular interactions with pi-pi spacing of 3.55 angstrom. All of the complexes emit green phosphorescence from the metal-to-ligand charge-transfer (MLCT) excited state with high quantum efficiency (0.08-0.17) at room temperature. A multilayer organic light-emitting diode (OLED) with (MBI) Pt(acac) as phosphorescent dopant was fabricated using the method of high-vacuum thermal evaporation, which gives a maximum brightness, luminous and power efficiency of 13 605 cd/m(2), 15.1 cd/A and 4.3 lm/W, respectively. In contrast, the comparable performance can be achieved in the solution-processed OLED based on (t-BuCzPBI) Pt(acac) with a peak brightness, luminous and power efficiency of 13 606 cd/m(2), 17.5 cd/A and 8.4 lm/W, respectively. The better device efficiency results from the good square plane of central Pt coordination unit and the inhibition of the aggregates due to bulky and rigid t-butylcarbazole dendrons. (C) 2009 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000267931300017
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/67367]
专题	中国科学院化学研究所
通讯作者	Cheng, Yanxiang
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin Province, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Li, Hui,Ding, Junqiao,Xie, Zhiyuan,et al. Synthesis, characterization and electrophosphorescent properties of mononuclear platinum(II) complexes based on 2-phenylbenzoimidazole derivatives[J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY,2009,694(17):2777-2785.
APA	Li, Hui,Ding, Junqiao,Xie, Zhiyuan,Cheng, Yanxiang,&Wang, Lixiang.(2009).Synthesis, characterization and electrophosphorescent properties of mononuclear platinum(II) complexes based on 2-phenylbenzoimidazole derivatives.JOURNAL OF ORGANOMETALLIC CHEMISTRY,694(17),2777-2785.
MLA	Li, Hui,et al."Synthesis, characterization and electrophosphorescent properties of mononuclear platinum(II) complexes based on 2-phenylbenzoimidazole derivatives".JOURNAL OF ORGANOMETALLIC CHEMISTRY 694.17(2009):2777-2785.