Title:
COMPOUND PROVIDED WITH AN AZA-SPIROFLUORENE AND ARYL KETONE CORE, PREPARATION METHOD THEREOF, AND APPLICATION OF SAME IN OLEDS
Document Type and Number:
WIPO Patent Application WO/2019/085759
Kind Code:
A1
Abstract:
The invention relates to a compound provided with an aza-spirofluorene and aryl ketone core, a preparation method thereof, and an application of the same in organic light-emitting diodes (OLEDs). The compound comprises aza-spirofluorene and aryl ketone structures, wherein at least one N atom is provided on the spirofluorene structure. Aza-spirofluorene and aryl ketone groups are powerful electron donating groups that have deep highest occupied molecular orbital (HOMO) energy levels and high electron mobility, making them suited to use in hole-blocking materials or electron transfer materials. The structure of the hole groups comprised in the invention can balance electron and hole transport in the material, enabling the material to be used as a host material in an emissive electroluminescent layer. Moreover, the groups in the compound of the present invention are relatively rigid and are not prone to intermolecular crystallization or aggregation, while exhibiting good film-forming properties. Use of the compound in an OLED device as an organic electroluminescent functional layer material results in a considerable improvement in current efficiency, power efficiency, and external quantum efficiency of the device, and there is also a very noticeable boost in the useful life of the device.
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Inventors:
WU XIUQIN (CN)
LI CHONG (CN)
ZHANG ZHAOCHAO (CN)
ZHANG XIAOQING (CN)
LI CHONG (CN)
ZHANG ZHAOCHAO (CN)
ZHANG XIAOQING (CN)
Application Number:
PCT/CN2018/110694
Publication Date:
May 09, 2019
Filing Date:
October 17, 2018
Export Citation:
Assignee:
JIANGSU SUNERA TECH CO LTD (CN)
International Classes:
C07D471/00; C07D471/10; C07D519/00; C09K11/06; H01L51/50
Foreign References:
| CN107056783A | 2017-08-18 | |||
| CN103189368A | 2013-07-03 | |||
| CN102870248A | 2013-01-09 |
Attorney, Agent or Firm:
KEYCOM PARTNERS, P.C. (CN)
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