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1. (WO2018157477) SPIROFLUORENE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT DEVICE

Pub. No.:    WO/2018/157477    International Application No.:    PCT/CN2017/084848
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Fri May 19 01:59:59 CEST 2017
IPC: C07D 209/86
C07F 9/53
C07D 235/18
C09K 11/06
H01L 51/50
H01L 51/54
Applicants: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD
武汉华星光电技术有限公司
Inventors: PAN, Biao
潘彪
Title: SPIROFLUORENE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT DEVICE
Abstract:
Provided are a spirofluorene derivative and an organic electroluminescent device using the spirofluorene derivative as a host material. The spirofluorene derivative is represented by general formula I. The 3-position and the 6-position of spirofluorene are modified with groups with electron and hole transport performance respectively to regulate the hole and electron transport performance of molecules, so that the problem that a high triplet state energy level, carrier transport matching, and a high glass transition temperature cannot be achieved simultaneously by a conventional phosphorescent host material is resolved.