S-triazine derivatives and application thereof to organic electroluminescence devices

A technology of s-triazine and derivatives, applied in the field of s-triazine derivatives, can solve the problems of reducing luminous efficiency, limiting applications, reducing the efficiency of OLEDs, etc., and achieving the effect of high fluorescence quantum yield
CN103539751AInactive Publication Date: 2014-01-29NANJING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING UNIV
Publication Date
2014-01-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to s-triazine derivatives which not only can be used as organic light-emitting layers, but also can be used as main materials of phosphor materials to be applied to organic electroluminescence devices. The glass transition temperature of the s-triazine derivatives provided by the invention ranges from 70 DEG C to 180 DEG C, the triplet-state energy of the s-triazine derivatives is over 2.7eV, the molecular structure of the s-triazine derivatives contains an s-triazine group, and the s-triazine derivatives have the structural general formula I shown in the specification. The s-triazine derivatives provided by the invention have higher fluorescence quantum yield, high stability and higher steric hindrance so that the solid fluorescence quenching is avoided, and the brightness and efficiency of the devices can be well increased when the s-triazine derivatives are used as the light-emitting layers to be applied to the organic electroluminescence devices; in addition, the s-triazine derivatives have higher triplet-state energy and can be used as the main materials to effectively transfer the triplet-state energy to green and red phosphorescent materials, so that the brightness and efficiency of the organic electroluminescence devices made of the phosphor materials can be increased.
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Description

technical field

[0001] The invention relates to a class of s-triazine derivatives, which can be used as organic light-emitting layers and host materials of phosphorescent materials in organic electroluminescent devices. Background technique

[0002] Under the environment of global energy shortage and climate warming, governments of various countries have vigorously developed sustainable high-tech energy-saving industries one after another. Organic electroluminescent devices (OLEDs) have attracted much attention because of their advantages such as wide vision, high brightness, low energy consumption, and the ability to prepare flexible displays. They are known as key technologies that will dominate the future display world. Therefore, governments and enterprises of various countries have laid out OLEDs industry one after another, such as Kodak and UDC in the United States, Philips in the Netherlands, Siemens in Germany, Sony in Japan, Samsung and LG in South Korea, etc. [0...

Claims

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