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Thermally induced delayed fluorescence material based on anthrone receptor and preparation method thereof

A thermally induced delayed fluorescence, acceptor technology, applied in the preparation of luminescent materials, organic compounds, chemical instruments and methods, etc., can solve problems such as efficiency roll-off

Pending Publication Date: 2020-08-28
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for all TADF devices, at high current densities, singlet-triplet annihilation (STA), triplet-triplet annihilation (TTA), triplet-polaron annihilation (TPQ), and excited states The non-radiative attenuation caused by molecular vibration relaxation will cause the efficiency roll-off to be very serious. Therefore, the further development of TADF materials and the solution to the problem of its efficiency roll-off are current research hotspots in the field of OLEDs.

Method used

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  • Thermally induced delayed fluorescence material based on anthrone receptor and preparation method thereof
  • Thermally induced delayed fluorescence material based on anthrone receptor and preparation method thereof
  • Thermally induced delayed fluorescence material based on anthrone receptor and preparation method thereof

Examples

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Embodiment 1

[0025] This example provides a preparation method of anthracene-9-yl (4-(3,6-di-tert-butyl-9h-carbazol-9-yl)phenyl) ketone ketone material, the specific steps are:

[0026] (1) Synthesis of anthracen-9-yl(4-iodophenyl)methanone.

[0027] Take a 500mL three-necked reaction bottle in the oven, add a magnetic rotor, assemble the reaction system while it is hot, and vacuumize the system, add 4-iodobenzoyl chloride (7.98g, 30mmol) and anthracene (6.41g, 35mmol) under nitrogen atmosphere , and add 250ml of dried CH2Cl2 solution, seal the system, change the nitrogen gas 3 times continuously, add AlCl3 (5.20g, 38mmol) to the reaction solution under the condition of nitrogen gas, and keep the reaction in a nitrogen environment. , The reflux temperature was 45°C and stirred for 4h. The reaction solution was cooled to room temperature, and the solvent was removed by rotary evaporation. The obtained product was ultrasonically dissolved with a very small amount of CH2Cl2 solution, and pur...

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Abstract

The invention belongs to the technical field of photoelectric materials, and particularly relates to an organic photoelectric material and a preparation method thereof. According to the organic photoelectric material, anthrone is used as a receptor to form a thermotropic delayed fluorescence material. The dense donor-acceptor group combination effectively avoids triplet state-charge reaction energy loss caused by electron and hole carrier density imbalance of the device so that the roll reduction problem of the device is improved, non-radiative transition is inhibited, and the material is an ideal luminescent layer material, an electron transport material and a light emitting layer material in the organic electroluminescent device.

Description

technical field [0001] The present invention relates to an organic photoelectric material and a preparation method thereof, in particular to a luminescent material based on an anthrone acceptor-based thermally induced delayed fluorescent material ketone material and a preparation method thereof. Background technique [0002] Organic light-emitting diodes (OLEDs) have attracted extensive attention from academia and industry due to their broad application prospects in the fields of full-color flat panel display and solid-state lighting. Organic electroluminescence can be divided into fluorescence and phosphorescence from the luminescence mechanism. Although phosphorescent materials can make full use of singlet and triplet excitons, the quantum efficiency of the device can theoretically reach 100%. A class of materials with the highest luminous efficiency, but compared from the perspective of device cost and lifetime, fluorescent materials are more valuable in practical applica...

Claims

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Application Information

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IPC IPC(8): C07C49/813C07C225/22C07D209/86C07C45/46C07C221/00C09K11/06
CPCC07C45/46C07C49/813C07C221/00C07C225/22C07C2603/24C07D209/86C09K11/06C09K2211/1011C09K2211/1014C09K2211/1029
Inventor 李璐陈善勇王超于军胜
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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