Small molecular blue light material and preparation method thereof
A technology of blue light materials and small molecules, which is applied in the field of preparation of small molecule blue light materials, can solve problems such as reducing device life and forming black spots, and achieve the effects of reducing interaction, preventing aggregation, and improving luminous efficiency
Inactive Publication Date: 2010-10-20
IRICO
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Problems solved by technology
Since small molecular organic compounds are easy to crystallize, black spots are easy to form in the film after the device is made, thereby reducing the life of the device
Method used
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Embodiment 1
[0021] Add 20 grams of p-benzoquinone, 30 grams of 2,3-di-tert-butyl-1,3-butadiene and 200 mL of toluene solvent in a 500 mL three-neck flask equipped with a reflux condenser, and heat to reflux for 24-48 After cooling the reaction system to room temperature, 1000 mL of ethanol was added into the above reaction system with stirring, and a white solid was obtained by suction filtration. The obtained product was recrystallized with an appropriate amount of toluene to obtain the product 2,3,6,7-tetra-tert-butyl-octahydro-anthraquinone with a yield of 80%;
[0022] Add 20 grams of 2,3,6,7-tetra-tert-butyl-octahydro-anthraquinone and 350 mL of potassium hydroxide ethanol solution (mass concentration 3- 8%), feed high-purity oxygen in a three-necked flask and stir the reaction for 24-48 hours. After the reaction, the product 2,3,6,7-tetra-tert-butylanthraquinone is obtained by suction filtration, and the yield is 95%.
[0023] Add 80mL of anhydrous diethyl ether into a 500mL three-...
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Abstract
The invention discloses a small molecular blue light material and a preparation method thereof. The preparation method is characterized by adopting the following three-step reaction of: (1) preparing 2,3,6,7-tetra-tertiary butyl-octahydro-anthraquinone; (2) preparing 2,3,6,7-tetra-tertiary butyl anthraquinone; and (3) preparing 2,3,6,7-tetra-tertiary butyl-9,10-(1-dinaphthyl)-anthracene. The fourtertiary butyls in the synthesized blue light material reduce the fluorescence quenching effect at higher doping concentration to a greater degree, and the luminous efficiency is improved. Moreover, the 2,3,6,7-tetra-tertiary butyl-9,10-(1-dinaphthyl)-anthracene introduces four tertiary butyls, and material molecules increase steric hindrance on an anthracene framework of a planar structure so asto prevent aggregation between molecular chromophores more effectively, reduce interaction between molecules and remarkably improve the luminous performance of the material.
Description
Technical field: [0001] The invention belongs to the technical field of organic electroluminescence materials, and in particular relates to a preparation method of a small molecule blue light material. Background technique: [0002] With the continuous development of information technology, the application of luminescent materials in information display, optical communication and other optoelectronic fields has attracted much attention. People are working hard to develop new luminescent materials and devices for flat panel display. In recent years, a new type of organic electroluminescent flat-panel display (OLED) has received extensive attention. Compared with liquid crystal flat-panel displays, organic electroluminescent flat-panel displays have significant characteristics such as active light emission, lightness, thinness, good contrast, no angle dependence, and low energy consumption, and have broad application prospects. In terms of colorization of OLED devices, variou...
Claims
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IPC IPC(8): C09K11/06C07C15/27C07C1/32
Inventor 张志刚
Owner IRICO