Spirofluorene ring compound, its use and organic electroluminescent device using it
A technology of electroluminescent devices and cyclic compounds, which is applied in the field of organic electroluminescent materials, can solve problems such as easy crystallization, and achieve the effects of improved film formation, increased efficiency, and improved crystallization performance
Active Publication Date: 2022-05-27
BEIJING ETERNAL MATERIAL TECH +1
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Problems solved by technology
Such materials have high electron mobility but tend to crystallize
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[0016] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0017] The invention discloses a spirofluorene ring compound, the compound has the structural formula shown in formula (I):
[0018]
[0019] Among them, A 1 ~A 12 Can be hydrogen or electron withdrawing group independently, and not both.
[0020] The outstanding advantage of the above structure is that the whole molecule is based on the spirofluorene ring structure, utilizing the SP of the central C atom. 3 The hybrid stereo configuration breaks the conjugation of the molecule, so that the HOMO and LUMO energy levels are distributed in the upper and lower parts, so as to prevent the triplet energy level from decreasing. In addition, the compound of the present invention adopts an asymmetric spi...
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A spirofluorene ring compound, its use and an organic electroluminescent device using it. The spirofluorene ring compound has a structure shown in the following formula (I); wherein, A 1 ~A 12 Independently hydrogen or electron-withdrawing groups, and cannot be hydrogen at the same time; electron-withdrawing groups are independently selected from carbonyl, cyano, substituted or unsubstituted C 2 ~C 30 The heteroaryl. The spirofluorene ring compound of the present invention is suitable as an electron transport material in organic electroluminescent devices, can reduce the lighting voltage of the device, improve the luminous efficiency of the device, is beneficial to the improvement of the film-forming properties of molecules, and expands the range of applications in organic electroluminescent devices. Light emitting devices.
Description
technical field [0001] The present invention relates to the field of organic electroluminescence materials, and more particularly, to a spirofluorene ring compound, its application in the field of organic electroluminescence, and organic optoelectronic materials and organic electroluminescence devices using the same. Background technique [0002] Due to the advantages of low driving voltage, low power consumption, high contrast ratio, active light emission, light weight and thin body, and flexible display, organic electroluminescent diodes (OLEDs) have gradually developed into the most powerful competitors in the new generation of flat panel display technology. , widely used in many electronic products such as TVs, mobile phones and wearable devices. [0003] Organic semiconductors are being developed for many different types of electronic applications. The construction of organic electroluminescent devices in which these organic semiconductors are used as functional materi...
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IPC IPC(8): C07D213/16C07C255/52C07D213/57C07D401/10C07D403/10C07C49/788C07F9/53C07F9/6568C07F7/08C07D249/08C07F5/02C07C317/14C07D333/76C07D413/10C07D417/10C07D251/24C07D235/18C07D239/26C07D471/04C07C25/22C09K11/06H01L51/54
CPCC09K11/06C07C25/22C07C49/788C07C255/52C07C317/14C07D213/16C07D213/57C07D235/18C07D239/26C07D249/08C07D251/24C07D333/76C07D401/10C07D403/10C07D413/10C07D417/10C07D471/04C07F5/027C07F7/0812C07F9/5325C07F9/65685C09K2211/1037C09K2211/1033C09K2211/1029C09K2211/1011C09K2211/1007C09K2211/1014C09K2211/1044C09K2211/1048C09K2211/1059C09K2211/1096H10K85/624H10K85/649H10K85/656H10K85/615H10K85/655H10K85/6565H10K85/654H10K85/6576H10K85/6572
Inventor 高文正范洪涛邵爽任雪艳
Owner BEIJING ETERNAL MATERIAL TECH