Unexpected Propeller-Like Hexakis(fluoren-2-yl)benzene Cores for Six-Arm Star-Shaped Oligofluorenes: Highly Efficient Deep-Blue Fluorescent Emitters and Good Hole-Transporting Materials

doi:10.1002/adfm.201202286

CORC > 化学研究所 > 中国科学院化学研究所

	Unexpected Propeller-Like Hexakis(fluoren-2-yl)benzene Cores for Six-Arm Star-Shaped Oligofluorenes: Highly Efficient Deep-Blue Fluorescent Emitters and Good Hole-Transporting Materials
	Zou, Yang 1; Zou, Jianhua 2; Ye, Tengling 3; Li, Hao 1; Yang, Chuluo 1; Wu, Hongbin 2; Ma, Dongge 3; Qin, Jingui 1; Cao, Yong 2
刊名	ADVANCED FUNCTIONAL MATERIALS
	2013-04-12
卷号	23 期号:14 页码:1781-1788
关键词	Star-shaped Macromolecules Oligofluorene Deep-blue Fluorescence Organic Light-emitting Devices (Oleds) Hole-transporting Materials
ISSN号	1616-301X
DOI	10.1002/adfm.201202286
英文摘要	Grafting six fluorene units to a benzene ring generates a new highly twisted core of hexakis(fluoren-2-yl)benzene. Based on the new core, six-arm star-shaped oligofluorenes from the first generation T1 to third generation T3 are constructed. Their thermal, photophysical, and electrochemical properties are studied, and the relationship between the structures and properties is discussed. Simple double-layer electroluminescence (EL) devices using T1T3 as non-doped solution-processed emitters display deep-blue emissions with Commission Internationale de l'Eclairage (CIE) coordinates of (0.17, 0.08) for T1, (0.16, 0.08) for T2, and (0.16, 0.07) for T3. These devices exhibit excellent performance, with maximum current efficiency of up to 5.4 cd A1, and maximum external quantum efficiency of up to 6.8%, which is the highest efficiency for non-doped solution-processed deep-blue organic light-emitting diodes (OLEDs) based on starburst oligofluorenes, and is even comparable with other solution-processed deep-blue fluorescent OLEDs. Furthermore, T2- and T3-based devices show striking blue EL color stability independent of driving voltage. In addition, using T0T3 as hole-transporting materials, the devices of indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene):poly(styrene sulfonic acid) (PEDOT:PSS)/T0T3/tris(8-hydroxyquinolinato)aluminium (Alq3)/LiF/Al achieve maximum current efficiencies of 5.516.62 cd A1, which are among the highest for hole-transporting materials in identical device structure.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000317293100008
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/46705]
专题	中国科学院化学研究所
通讯作者	Zou, Yang
作者单位	1.Wuhan Univ, Hubei Key Lab Organ & Polymer Optoelect Mat, Dept Chem, Wuhan 430072, Peoples R China 2.S China Univ Technol, State Key Lab Luminescent Mat & Devices, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Zou, Yang,Zou, Jianhua,Ye, Tengling,et al. Unexpected Propeller-Like Hexakis(fluoren-2-yl)benzene Cores for Six-Arm Star-Shaped Oligofluorenes: Highly Efficient Deep-Blue Fluorescent Emitters and Good Hole-Transporting Materials[J]. ADVANCED FUNCTIONAL MATERIALS,2013,23(14):1781-1788.
APA	Zou, Yang.,Zou, Jianhua.,Ye, Tengling.,Li, Hao.,Yang, Chuluo.,...&Cao, Yong.(2013).Unexpected Propeller-Like Hexakis(fluoren-2-yl)benzene Cores for Six-Arm Star-Shaped Oligofluorenes: Highly Efficient Deep-Blue Fluorescent Emitters and Good Hole-Transporting Materials.ADVANCED FUNCTIONAL MATERIALS,23(14),1781-1788.
MLA	Zou, Yang,et al."Unexpected Propeller-Like Hexakis(fluoren-2-yl)benzene Cores for Six-Arm Star-Shaped Oligofluorenes: Highly Efficient Deep-Blue Fluorescent Emitters and Good Hole-Transporting Materials".ADVANCED FUNCTIONAL MATERIALS 23.14(2013):1781-1788.