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Compound containing triazine and carbazole and application thereof, and organic electroluminescence device
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A compound, carbazole technology, applied in the field of organic electroluminescent devices, can solve problems such as charge imbalance in the light-emitting layer, lower device efficiency, and difficult flow of electrons, and achieve high luminous purity, good thermal stability, and high luminous efficiency. Effect
Inactive Publication Date: 2018-11-30
SHANGHIA TAOE CHEM TECH CO LTD
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However, due to the characteristics of CBP that holes are easy to transport and electrons are difficult to flow, the charge in the light-emitting layer is unbalanced, which reduces the efficiency of the device.
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Embodiment 1
[0044] Synthesis of compound 1
[0045]
[0046] Synthesis of Intermediate 1-1
[0047] In the flask, the intermediates 2-(3-chloro-5-bromo-phenyl)-4, 6-diphenyl-1,3,5-triazine (4g, 9.5mmol), phenylboronic acid (1.4 g, 14mmol), potassiumcarbonate (2.7g, 20mmol), tetrakistriphenylphosphine palladium (0.1g), tetrahydrofuran (400mL) and water (20mL), heated to reflux for 12 hours under nitrogen protection, cooled, and dichloromethane Extraction, drying, concentration, and recrystallization of the crude product from toluene yielded 2.6 g with a yield of 67%.
[0054] Its synthesis method is the same as the synthesis of intermediate 1-1, only 9-phenanthreneboronic acid is used instead of phenylboronic acid, and the yield is 73%.
[0055] The synthetic method of compound 4
[0056] The synthesis method is the same as that of compound 1, the raw material used is intermediate 4-1 instead of intermediate 1-1, and the yield is 60%.
[0061] The synthesis method is the same as the synthesis of intermediate 1-1, the raw material used is 4-biphenylboronic acid instead of phenylboronic acid, and the yield is 77%.
[0062] The synthetic method of compound 6
[0063] The synthesis method is the same as that of compound 1, except that intermediate 1-1 is replaced by intermediate 6-1, and the yield is 49%.
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Abstract
The invention provides a compound containing triazine and carbazole. The compound has a structural formula as described in the specification. The compound provided by the invention has good thermal stability, high luminous efficiency and high luminous purity, and can be applied to the fields of organic electroluminescence devices, solar cells, and organic thin-film transistors or organic photoreceptors; and the organic electroluminescence device manufactured by adopting the compound containing the triazine and the carbazole has the advantages of good electroluminescent efficiency, excellent color purity and long service life.
Description
technical field [0001] The invention relates to the field of organic electroluminescent materials, in particular to a compound containing triazine and carbazole and its application, and also relates to an organic electroluminescent device. Background technique [0002] Organic electroluminescent devices (OLEDs) are devices prepared by depositing a layer of organic materials between two metal electrodes by spin coating or vacuum evaporation. A classic three-layer organic electroluminescent device includes a hole transport layer, emissive layer and electrontransport layer. The holes generated by the anode are combined with the electrons generated by the cathode through the hole transport layer to form excitons in the light emitting layer through the hole transport layer, and then emit light. Organic electroluminescent devices can be adjusted to emit various required lights by changing the material of the light-emitting layer as required. [0003] As a new type of display te...
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