A light-emitting material based on a thioxanthene-fluorene spiro structure and an organic optoelectronic device using the material as a light-emitting layer

A technology for luminescent materials and optoelectronic devices, which can be applied in luminescent materials, electro-solid devices, electrical components, etc., can solve the problems of rarely reported organic light-emitting small molecules, and achieve improved carrier transport characteristics, molecular weight determination, and good reproducibility. Effect

Active Publication Date: 2017-01-04
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] So far, although there have been many reports on light-emitting materials for organic electroluminescent devices, there are few reports on small organic light-emitting molecules with a thioxanthene-fluorene spiro structure as the core.

Method used

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  • A light-emitting material based on a thioxanthene-fluorene spiro structure and an organic optoelectronic device using the material as a light-emitting layer
  • A light-emitting material based on a thioxanthene-fluorene spiro structure and an organic optoelectronic device using the material as a light-emitting layer
  • A light-emitting material based on a thioxanthene-fluorene spiro structure and an organic optoelectronic device using the material as a light-emitting layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation of intermediate 1 of this embodiment:

[0040] Add 4.66g (20mmol, 10equ) of 2-bromobiphenyl to the low-temperature reaction flask, dissolve it with 60mlTHF, and protect it with nitrogen gas. After sealing the device, add liquid nitrogen to cool to -78°C, and drop 8.0ml (2.5 M) Butyllithium, keep warm for 40min, then add 0.7g 3,7-dibromothioxanthone THF solution at one time, then react at room temperature overnight, the reaction is complete, remove THF with rotary evaporator, dichloromethane extraction, column separation The isolated product h1 was obtained, 20ml of acetic acid and an appropriate amount of hydrochloric acid were added to the isolated product, under nitrogen protection, stirred overnight at 80°C, and 10.83g of white solid intermediate 1 was obtained by column separation, with a yield of 82%. 1H NMR (400MHz, CDCl 3 , ppm): 7.86-7.82 (d, 2H), 7.50-7.54 (s, 2H), 7.25-7.40 (m, 4H), 7.02-7.05 (m, 4H), 6-95-7.00 (dd, 2H) . The reaction equati...

Embodiment 2

[0048] The preparation of intermediate 2 of the present embodiment:

[0049]Dissolve 1.5 g of the intermediate 1 obtained in Example 1 with 30 ml of dichloromethane, add 12 ml of acetic acid and 3.0 ml of 30% hydrogen peroxide, and react overnight at 80° C. After the reaction is complete, extract with dichloromethane, dry over anhydrous magnesium sulfate, and the solid Sample loading, petroleum ether:dichloromethane=2:1 (volume ratio) was passed through the column, and 1.23 g of white solid intermediate 2 was isolated with a yield of 80%. 1H NMR (400MHz, CDCl 3 , ppm): 7.86-7.82 (d, 2H), 7.64-7.68 (dd, 2H), 7.50-7.54 (s, 2H), 7.38-7.43 (m, 4H), 7.25-7.40 (m, 4H). The reaction equation is as follows:

[0050]

Embodiment 3

[0052] The preparation of intermediate 3 of this embodiment:

[0053] Add 4.66g (20mmol, 10equ) of 2-bromobiphenyl to the low-temperature reaction flask, dissolve it with 60mlTHF, and protect it with nitrogen gas. After sealing the device, add liquid nitrogen to cool to -78°C, and drop 8.0ml (2.5 M) Butyllithium, keep warm for 40min, then add 0.582g of 3-bromothioxanthone THF solution at one time, then react overnight at room temperature, the reaction is complete, remove THF with rotary evaporator, extract with dichloromethane, column separation to obtain product h2 , adding 20ml of acetic acid and appropriate amount of hydrochloric acid to the product h2, under nitrogen protection, stirring at 80°C overnight, and column separation to obtain 0.65g of white solid intermediate product 3, with a yield of 76%. C 25 h 15 BrS M / S=426.01, theoretical value: 428.01 (100.0%), 426.01 (99.0%), 429.01 (28.2%), 427.01 (27.7%), 428.00 (4.5%), 430.00 (4.4%), 430.01 (3.7%) ), 431.00 (1.2%)...

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Abstract

The invention belongs to the technical field of photoelectric materials, and in particular relates to a luminescent material based on a thioxanthene-fluorene spiro structure and an organic photoelectric device using the material as a luminescent layer. The luminescent material uses a thioxanthene-fluorene spiro structure as a skeleton unit, prepares an intermediate through Ullmann reaction, and then obtains a target compound through Ullmann reaction or Suzuki reaction. This type of material has a single structure and a definite molecular weight; the spiral structure of the material of the present invention can adjust the packing mode between molecules, thereby effectively suppressing the light emission of exciplexes, which has far-reaching significance for the development of high-performance devices; The organic photoelectric device of the layer has good light-emitting performance and can be applied to organic small molecule light-emitting diodes.

Description

technical field [0001] The invention belongs to the technical field of photoelectric materials, and in particular relates to a luminescent material based on a thioxanthene-fluorene spiro structure and an organic photoelectric device using the material as a luminescent layer. Background technique [0002] In order to improve the efficiency and lifetime of organic electroluminescent devices, compared with polymers, light-emitting small molecules are more likely to be commercialized due to fewer preparation steps, stable structures, and no disadvantages of polydispersity. The preparation of multilayer devices by evaporation or solution processing of small molecules has received great attention and great progress has been made. [0003] So far, although there have been many reports on light-emitting materials for organic electroluminescent devices, there are few reports on small organic light-emitting molecules with a thioxanthene-fluorene spiro structure as the core. Based on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D409/14C07D409/04C07D335/04C07D417/14C07D417/04C07D409/10C07D417/10C09K11/06H01L51/54
Inventor 苏仕健李云川谢高瞻彭俊彪曹镛
Owner SOUTH CHINA UNIV OF TECH
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