Compound based on carbazole and anthrone structures and application thereof

A compound and compound structure technology, applied in the field of organic electroluminescence devices, can solve the problems of high fluorescence quantum yield, insufficient development of TADF materials, lagging efficiency and lifetime development, etc., to achieve triplet exciton quenching prolongation , small spectral changes, low attenuation coefficient effect

Pending Publication Date: 2022-03-29
JIANGSU SUNERA TECH CO LTD
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  • Abstract
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Problems solved by technology

[0004] Theoretically, TADF materials can realize 100% exciton utilization rate through anti-intersystem jumping from triplet state to singlet state, but in the process of acting as a host or doping in practical applications, the device effect is not good, and its main The following problems: (1) Since the design of TADF materials requires a small S1-T1 band gap, it is difficult to achieve both fast anti-system crossing rate (short delayed luminescence lifetime) and high fluorescence quantum yield; (2) due to Strong CT effect, TADF material has spectral instability caused by different ratios
[0005] As far as the actual needs of the current OLED display lighting industry are concerned, the development of TADF materials is far from enough, and a lot of manpower and material resources still need to be invested to solve the problems of lagging efficiency and life span encountered in the commercialization of this type of materials.

Method used

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  • Compound based on carbazole and anthrone structures and application thereof
  • Compound based on carbazole and anthrone structures and application thereof
  • Compound based on carbazole and anthrone structures and application thereof

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Experimental program
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preparation Embodiment 1

[0050]

[0051] 1) Add 0.01mol of raw material A1 and 0.012mol of raw material B1 to 120mL of toluene:ethanol=2:1 (volume ratio) mixed solvent, add 0.02mol of potassium carbonate, and add 0.0005mol of Pd under nitrogen protection (PPh 3 ) 4 , heated to 110°C and reacted for 12 hours, took a sample and spotted the plate, after the raw material A1 was completely reacted, cooled and filtered, the filtrate was rotary evaporated to remove the solvent, and the crude product was passed through a silica gel column to obtain compound intermediate C1; HPLC purity 99.36%, yield 88.6%;

[0052] 2) Under the protection of nitrogen, add 0.01mol intermediate C1, 0.012mol raw material D1, 0.02mol sodium tert-butoxide, 1.0×10 -4 mol Pd 2 (dba) 3 , 1.0×10 -4 mol of tri-tert-butylphosphine and 150ml of toluene were stirred and mixed, then heated to 110°C, refluxed for 24 hours, and the plate was sampled, showing that no intermediate C1 remained, and the reaction was complete; naturally c...

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Abstract

The invention relates to a compound based on carbazole and anthrone structures and application thereof, belongs to the technical field of semiconductors, and provides a compound with a structure as shown in a general formula (1). The compound provided by the invention has relatively high thermal stability; when the material is used as a luminescent layer material of an OLED luminescent device, a TADF effect can be generated, the voltage of the device can be effectively reduced, the luminous efficiency of the device can be improved, and the service life of the device can be prolonged.

Description

technical field [0001] The invention belongs to the field of organic photoelectric materials, and relates to a new organic compound based on carbazole and anthrone structure and its use as an organic light-emitting functional material, and a light-emitting layer containing a structure based on carbazole and anthrone Organic electroluminescent devices. Background technique [0002] Organic electroluminescence (OLED: Organic Light Emission Diodes) device technology can be used to manufacture new display products, and can also be used to make new lighting products. It is expected to replace the existing liquid crystal display and fluorescent lighting, and has a wide application prospect. The OLED light-emitting device is like a sandwich structure, including electrode material film layers, and organic functional materials sandwiched between different electrode film layers. Various functional materials are superimposed on each other according to the application to form an OLED li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D209/86C07D405/10C07D405/14C07D409/10C09K11/06H01L51/54H01L51/50
CPCC07D405/14C07D405/10C07D409/10C07D209/86C09K11/06C09K2211/1029C09K2211/1088C09K2211/1007C09K2211/1059H10K85/654H10K85/6574H10K85/6572H10K50/11
Inventor 陆颖曹旭东张兆超李崇崔明
Owner JIANGSU SUNERA TECH CO LTD
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