Spirobenzofluorene linked anthracene derivatives: Synthesis and application in blue fluorescent host materials
摘要:
Blue light-emitting anthracene-based host materials with a spiro[benzo[c]fluorene-7,9'-fluorene] core, 5-(10-(naphthalen-2-yl)anthracen-9-yl)spiro[ benzo[c]fluorene-7,9'-fluorene] (NA-SBFF) and 5-(10-(4(naphthalen-1-yl)phenyl)anthracen-9-yl)spiro[benzo[c]fluorene-7,9'-fluorenel (NPA-SBFF), were designed and synthesized via two-step Suzuki coupling reactions. Introduction of a spiro group into the structure of the anthracene moieties lead to a reduction in crystallization tendency, and a high glass transition temperature was observed. Typical blue fluorescent organic light emitting diodes with the configuration of ITO/N,N'-diphenyl-N,N'-bis[4-(phenyl-m-tolyl-amino)phenyl]biphenyl-4,4'-diamine (DNTPD)/N,N'-di(1-naphthyl)-N,N'-diphenylbenzidine (NPB)/HOST: Dopant/tris(8-hydroxyquinoline)aluminum (Alq(3))/LiF were developed using SBFF-type anthracene derivatives as a host material and N,N,N',N'-tetraphenylspiro [benzo[c]fluorene-7,9'-fluorene]-5,9-diamine (TPA-SBFF) as a dopant material. A device obtained from NA-SBFF doped with TPA-SBFF showed blue color purity of 0.146 and 0.167, a luminance efficiency of 8.65 cd/A, and an external quantum efficiency > 6.01% at 8.0 V. (C) 2012 Elsevier Ltd. All rights reserved.
ORGANIC COMPOUND FOR ORGANIC ELECTROLUMINESCENCE DEVICE AND USING THE SAME
申请人:YEN FENG-WEN
公开号:US20170084842A1
公开(公告)日:2017-03-23
The present invention generally discloses an organic compound and organic electroluminescence (herein referred to as organic EL) device using the organic compound. More specifically, the present invention relates to an organic EL device employing the organic compound as fluorescent emitting layer which can display long lifetime, high efficiency and emitting fluorescent blue light and green light.
TRIPHENYLENE-BASED MATERIALS FOR ORGANIC ELECTROLUMINESCENT DEVICES
申请人:Stoessel Philipp
公开号:US20130200359A1
公开(公告)日:2013-08-08
The present invention relates to compounds of the formula (1) and (2) which are suitable for use in electronic devices, in particular organic electroluminescent devices.