Phenyl branching luminescent material and organic electroluminescent device thereof
A luminescent material, electroluminescence technology, applied in the direction of luminescent materials, electro-solid devices, electrical components, etc., can solve the problems of affecting the transition and recombination of electrons or holes, low electro-optical conversion coefficient, influence of device performance, etc., and achieve good thin film shape. appearance, strong light physical properties, and the effect of reducing energy loss
Active Publication Date: 2019-08-23
WUHAN SUNSHINE OPTOELECTRONICS TECH CO LTD
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Problems solved by technology
However, in practical applications, it is still a big problem to design and synthesize optoelectronic materials with excellent comprehensive properties.
For example, the electro-optic conversion coefficient is low due to the electrostatic interaction between the groups of small organic molecules, which affects the transition and recombination of electrons or holes in the mat...
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[0072] The present invention will be further described below in conjunction with synthetic examples and device examples. The following examples help to further understand the present invention. The given examples are only used to explain the present invention and are not intended to limit the scope of the present invention.
[0073] Synthesis of Synthetic Example 1 Compound (1-1)
[0074]
[0075] In a 100mL three-necked flask, add [1,1'-biphenyl]-2-amine (3.38g, 20mmol), 5'-bromo-1,1':3',1"-terphenyl (15.46g, 50mmol ), sodium tert-butoxide (3.84g, 40mmol), tri-tert-butylphosphine tetrafluoroborate (0.058g, 0.2mmol), according to the amount of substance of [1,1'-biphenyl]-2-amine , add 2.5 times the volume of toluene, under a nitrogen atmosphere, add tris(dibenzylideneacetone) dipalladium (0.096g, 0.1mmol), react at 100-115°C for 8-24h, the liquid phase monitoring reaction is basically complete, cool to room temperature, washed with water, separated, concentrated the organ...
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Abstract
The invention belongs to the technical field of organic synthesis, and particularly relates to a phenyl branching luminescent material and an organic electroluminescent device thereof. According to the invention, through fine design of a hole-transport material subjected to branching twisting, a core light-emitting layer material is further selected, and a high-refraction low-absorption covering layer material is introduced, so that compared with the prior art, the device is obviously improved in comprehensive performance such as starting voltage, light emitting brightness, current efficiency,light color and thermal stability, and is obviously improved in performance stability under a state that the device is operated and heat is accumulated.
Description
technical field [0001] The invention belongs to the field of organic synthesis technology, and in particular relates to a phenyl branched luminescent material and an organic electroluminescent device. Background technique [0002] In recent years, organic light-emitting materials have the advantages of good flexibility and suitable for making large-area display devices in practical applications due to their characteristics of diverse luminous colors, adjustable luminous colors, and easy structural adjustment. hotspot. At the same time, organic light-emitting materials also have a very wide range of applications in the fields of electroluminescence, photochemical sensors, biological cell imaging, and dye-sensitized solar cells. [0003] Organic light-emitting materials can be divided into small organic molecules, conjugated polymers and metal complexes according to their basic molecular structure. Among them, organic small molecules have the characteristics of simple struct...
Claims
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Patent Timeline
Login to view more IPC IPC(8): C07C211/54C07D213/74C07D239/42C07D251/42C07D213/38C07D239/26C07D251/24C07C211/61C07D209/88C07F7/08C07F5/02C07F9/53C07D405/04C07D409/04C07D209/86C07D417/10C07D417/14C09K11/06H01L51/50H01L51/54
CPCC07C211/54C07D213/74C07D239/42C07D251/42C07D213/38C07D239/26C07D251/24C07C211/61C07D209/88C07F7/0816C07F5/027C07F9/5325C07F7/081C07D405/04C07D409/04C07D209/86C07D417/10C07D417/14C09K11/06C09K2211/1007C09K2211/1011C09K2211/1014C09K2211/1029C09K2211/1044C09K2211/1059C09K2211/1096C09K2211/1051C09K2211/1088C09K2211/1092H10K85/622H10K85/615H10K85/631H10K85/636H10K85/626H10K85/654H10K85/633H10K85/6576H10K85/6574H10K85/657H10K85/6572H10K85/40H10K50/15Y02E10/549
Inventor 穆广园庄少卿任春婷徐鹏
Owner WUHAN SUNSHINE OPTOELECTRONICS TECH CO LTD
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