Diarylmethylene-bridged triphenylamine derivatives encapsulated with fluorene: very high T-g host materials for efficient blue and green phosphorescent OLEDs

	Diarylmethylene-bridged triphenylamine derivatives encapsulated with fluorene: very high T-g host materials for efficient blue and green phosphorescent OLEDs
	Fan C ; Chen YH ; Jiang ZQ ; Yang CL ; Zhong C ; Qin JG ; Ma DG
刊名	journal of materials chemistry
	2010
卷号	20 期号:16 页码:3232-3237
关键词	LIGHT-EMITTING-DIODES ORGANIC ELECTROLUMINESCENT DEVICES ANODIC OXIDATION PATHWAYS ELECTROPHOSPHORESCENT DEVICES BIPOLAR HOST BENZIMIDAZOLE DERIVATIVES IRIDIUM COMPLEXES CARRIER TRANSPORT ENERGY-TRANSFER TRIPLET ENERGY
ISSN号	0959-9428
通讯作者	yang cl
中文摘要	two bridged triphenylamine/fluorene hybrids, btpaf1 and btpaf2, were designed and synthesized through friedel-crafts reaction. their thermal, electrochemical, electronic absorption and photoluminescent properties were fully investigated. very high glass transition temperatures (t-g) were observed at 204 degrees c for btpaf1 and 211 degrees c for btpaf2, owing to the introduction of rigid fluorene and bridged triphenylamine unit. the encapsulation of a fluorene unit at the para positions of bridged triphenylamine greatly enhances their electrochemical stability. the linkage by the quaternary carbon atom of the fluorene moiety (c-9) effectively prevents the extension of p-conjugation of the bridged triphenylamine core, and consequently means that the compounds have a high triplet energy of 2.86 ev. phosphorescent organic light-emitting devices (pholeds) fabricated by using the two compounds as the hosts and the blue emitter bis[2-(4',6'-difluorophenyl) pyridinato-n,c-2']iridium(iii) picolate (firpic) as the guest exhibit good el performances with a maximum current efficiency of 20 cd a(-1), a maximum power efficiency of 14 lm w-1, and a maximum external quantum efficiency of 9.4%. green electrophosphorescent devices by using green-emitter iridium(iii) wfac-tris(2-phenylpyridine) [ir(ppy)(3)] as guest and the two new compounds as the hosts display excellent el performances with a maximum current efficiency of 75 cd a(-1), a maximum power efficiency of 60 lm w-1, and a maximum external quantum efficiency of 19.5%. the device figures of merit, together with the excellent morphological and electrochemical stabilities, make the new compounds ideal host materials for pholeds, especially for high-temperature applications of devices.
收录类别	SCI收录期刊论文
语种	英语
公开日期	2012-06-06
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/43802]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Fan C,Chen YH,Jiang ZQ,et al. Diarylmethylene-bridged triphenylamine derivatives encapsulated with fluorene: very high T-g host materials for efficient blue and green phosphorescent OLEDs[J]. journal of materials chemistry,2010,20(16):3232-3237.
APA	Fan C.,Chen YH.,Jiang ZQ.,Yang CL.,Zhong C.,...&Ma DG.(2010).Diarylmethylene-bridged triphenylamine derivatives encapsulated with fluorene: very high T-g host materials for efficient blue and green phosphorescent OLEDs.journal of materials chemistry,20(16),3232-3237.
MLA	Fan C,et al."Diarylmethylene-bridged triphenylamine derivatives encapsulated with fluorene: very high T-g host materials for efficient blue and green phosphorescent OLEDs".journal of materials chemistry 20.16(2010):3232-3237.