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Azaphenanthrene fluorene derivatives, preparation method and electroluminescence light-emitting device

A technology of fluorene derivatives and azophenanthrene, which is applied in the field of organic light-emitting materials, can solve the problems of device instability and low luminous efficiency, and achieve the effects of improving device efficiency, reducing red shift, and increasing glass transition temperature

Active Publication Date: 2017-03-08
TCL CORPORATION
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Problems solved by technology

[0007] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide an azaphenanthrene fluorene derivative, a preparation method and an electroluminescent light-emitting device, aiming at solving the problems of low luminous efficiency and unstable devices of existing fluorescent light-emitting materials. question

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[0032] The present invention provides an azaphenanthrene fluorene derivative, a preparation method and an electroluminescent light-emitting device. In order to make the purpose, technical solution and effect of the present invention clearer and more definite, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] This embodiment provides azaphenanthrene fluorene derivatives, the general structural formula of which is as follows:

[0034] , where Ar 1 and Ar 2 Both are carbazole groups.

[0035] Among them, the Ar 1 and Ar 2 One of the following combinations:

[0036] Ar 1 =Ar 2 = , at this time, the azaphenanthrene fluorene derivatives are: 9,9'-diphenyl-azaphenanthrene fluorene (abbreviated as DPPhF);

[0037] Ar 1 = , Ar 2 = , at this time, the azaphenanthrene fluorene derivatives are: 9-...

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Abstract

The invention discloses a nitrogen miscellaneous derivatives, preparation methods and electrochemical fluorescent light emitting devices. Among them, the nitrogen miscellaneous disharma is as follows as follows:, AR1 and AR2 are crackedAzoli group.The nitrogen miscellaneous and mackerel derivatives of the present invention have relatively good non -flat rigid structures, and due to the introduction of the miscellaneous atoms, the electronic transmission rate of the mandarin compounds is further improved, the efficiency of the device is improved, and at the same time, with other high fluorescent quantumsThe Kagazaza group with an efficiency and an unacopoly transmission rate is connected through the nitrogen mixed 9 -‑ 芴, which can enhance the rigidity of the entire compound molecule, increase the glass transformation temperature of the compound, and promote the lighting layer of the device.Electronic transmission balance, increase the probability of excitement compound, further enhance the stability of the light emitting devices, at the same time inhibit the accumulation of π‑π π between the molecules of compounds, reduce the degree of red shift of the optometry spectrum, and improve the efficiency of fluorescent lighting devices.

Description

technical field [0001] The invention relates to the field of organic light-emitting materials, in particular to an azaphenanthrene fluorene derivative, a preparation method and an electroluminescence light-emitting device. Background technique [0002] After more than 20 years of development of organic light-emitting diodes (OLED), more and more organic light-emitting materials have been developed, and some groups that were first used in blue-light fluorescent light-emitting materials have also been further improved, such as anthracene, naphthalene, phenanthrene And pyrene, etc. have a relatively large energy band width, which can well meet the requirements of blue-light fluorescent light-emitting materials, and its structural formula is as follows: [0003] [0004] It can be seen from the above that groups such as anthracene, naphthalene, phenanthrene and pyrene used in blue-light fluorescent light-emitting materials have relatively good planarity, so when the structure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D221/18C07D401/14C07D401/04C09K11/06H01L51/54
CPCC09K11/06C07D221/18C07D401/04C07D401/14C09K2211/1029H10K85/6572
Inventor 黄宏
Owner TCL CORPORATION
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