Aza-phenanthro-fluorene derivative and preparation method thereof as well as electrically-induced fluorescence luminescent device

A technology of fluorene derivatives and phenanthroline, 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 the degree of red shift, and suppressing π-π stacking

Active Publication Date: 2014-01-29
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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  • Aza-phenanthro-fluorene derivative and preparation method thereof as well as electrically-induced fluorescence luminescent device
  • Aza-phenanthro-fluorene derivative and preparation method thereof as well as electrically-induced fluorescence luminescent device
  • Aza-phenanthro-fluorene derivative and preparation method thereof as well as electrically-induced fluorescence luminescent device

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Embodiment Construction

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

[0033] This embodiment provides an azaphenanthrofluorene derivative, the general structure of which is as follows:

[0034] , Where Ar 1 And Ar 2 All are carbazole groups.

[0035] Where the Ar 1 And Ar 2 One of the following combinations:

[0036] Ar 1 =Ar 2 = At this time, the azaphenanthrofluorene derivative is: 9,9'-diphenyl-azaphenanthrofluorene (abbreviated as DPPhF);

[0037] Ar 1 = , Ar 2 = At this time, the azaphenanthrofluorene derivative is: 9-phenyl-9'-(9-phenylcarbazolyl)-azaphenanthrofluorene (abbrevi...

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Abstract

The invention discloses an aza-phenanthro-fluorene derivative and a preparation method thereof as well as an electrically-induced fluorescence luminescent device. The structural general formula of the aza-phenanthro-fluorene derivative is as shown in the specification, wherein Ar1 and Ar2 in the structural general formula are carbazole groups. The aza-phenanthro-fluorene derivative disclosed by the invention has the advantages that the aza-phenanthro-fluorene derivative has a relatively good non-planar rigid structure, due to the introduction of heteroatom, the electron transfer rate of the fluorene compound is increased, the device efficiency is improved, meanwhile the fluorene compound is connected to other carbazole groups with high fluorescence quantum efficiency and hole transfer rate through 9-site of the aza-phenanthro-fluorene, the molecular rigidity of the whole compound can be enhanced very well, the glass transition temperature of the compound is increased, the luminescent layer hole and the electron transfer rate of the device are promoted, the exciton recombination probability is increased, the stability of the luminescent device is further improved, meanwhile the pi-pi stacking between molecules of the compound is inhibited, the red shift degree of electroluminescent spectra is reduced, and the efficiency of the fluorescence luminescent device is improved.

Description

Technical field [0001] The invention relates to the field of organic light-emitting materials, in particular to an azaphenanthrofluorene derivative, a preparation method and an electroluminescence light-emitting device. Background technique [0002] Organic light-emitting diodes (OLED) After more than 20 years of development, more and more organic light-emitting materials have been developed, and some of the first groups used in blue fluorescent light-emitting materials have also been further improved, such as anthracene, naphthalene, phenanthrene And pyrene has a relatively large energy band width, which can well meet the requirements of blue fluorescent light-emitting materials, and its structural formula is as follows: [0003] [0004] It can be seen from the above that the anthracene, naphthalene, phenanthrene and pyrene groups used in blue fluorescent light-emitting materials have relatively good planarity. Therefore, when the structure of their derivatives does not break the...

Claims

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Application Information

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Patent Type & Authority Applications(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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