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A kind of phosphorescent platinum complex as oled doping material and its application

A technology of platinum complexes and doping materials, applied in the field of phosphorescent platinum complexes, can solve problems such as unsatisfactory lifetime performance, and achieve the effects of good industrialization prospects, improved luminous efficiency, and high luminous efficiency

Active Publication Date: 2022-03-08
JIANGSU SUNERA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The Forrest group used platinum octaethylporphyrin (PtOEP) to dope the small molecule host material 8-hydroxyquinoline aluminum to make a red electrophosphorescent device, and the external quantum efficiency reached 4%. So far, the research on electrophosphorescence has been greatly improved Attention, but the lifetime performance of the existing organic electrophosphorescent complexes is not ideal, and needs to be further improved

Method used

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  • A kind of phosphorescent platinum complex as oled doping material and its application
  • A kind of phosphorescent platinum complex as oled doping material and its application
  • A kind of phosphorescent platinum complex as oled doping material and its application

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preparation example Construction

[0054] The specific reaction types involved in the preparation of the compounds of the present invention are classified as follows:

[0055] Reaction condition 1:

[0056] In a 250mL three-neck flask, under nitrogen protection, 0.02mol reactant A, 0.022mol reactant B, 0.05mol sodium tert-butoxide, 0.2mmol Pd 2 (dba) 3 Add 0.2mmol tri-tert-butylphosphine into 150mL toluene, stir and mix, heat to 110-120°C, reflux for 12-16 hours, and the reaction is complete; naturally cool to room temperature, filter, and the filtrate is rotary evaporated under reduced pressure until there is no distillate. Neutral silica gel column to obtain the product.

[0057] Reaction condition 2:

[0058] Add 0.05mol of reactant C, 41.6g of N-bromosuccinimide (NBS), 500mL of dichloromethane and 500mL of acetonitrile into the three-necked flask in turn, stir at room temperature for 24h, after the reaction, the precipitated solid product is decompressed Suction filtration, the resulting solid product w...

preparation Embodiment 1

[0078]

[0079] Under a nitrogen atmosphere, weigh 0.01mol of reactant S-1 and dissolve it in 45mL of tetrahydrofuran, cool down to -78°C, slowly drop into a cyclohexane solution containing 0.02mol of n-butyllithium, after the dropwise addition, keep stirring for 30 minutes Slowly add a tetrahydrofuran solution containing 0.035mol trimethyl borate dropwise. After the dropwise addition, slowly warm up to room temperature and keep warm for 10 hours. After the reaction, cool down to 0°C and slowly drop in distilled water. Stir for 1 hour, then rise to room temperature; extract the reaction solution with 150 mL of ethyl acetate, wash the extract with 150 mL of saturated brine three times, and finally dry over anhydrous magnesium sulfate, and distill the solution under reduced pressure, and distill the obtained solid with 400 mL of V 甲苯 :V 乙醇 =3:1 mixed solution was recrystallized to obtain E-1.

[0080] In a 250mL three-neck flask, under nitrogen protection, 0.02mol reactant A...

preparation Embodiment 2

[0085]

[0086] Under a nitrogen atmosphere, weigh 0.01mol of reactant S-2 and dissolve it in 45mL of tetrahydrofuran, cool down to -78°C, slowly drop into a cyclohexane solution containing 0.02mol of n-butyllithium, after the dropwise addition, keep stirring for 30 minutes Slowly add a tetrahydrofuran solution containing 0.035mol trimethyl borate dropwise. After the dropwise addition, slowly warm up to room temperature and keep warm for 10 hours. After the reaction, cool down to 0°C and slowly drop in distilled water. Stir for 1 hour, then rise to room temperature; extract the reaction solution with 150 mL of ethyl acetate, wash the extract with 150 mL of saturated brine three times, and finally dry over anhydrous magnesium sulfate, and distill the solution under reduced pressure, and distill the obtained solid with 400 mL of V 甲苯 :V 乙醇 =3:1 mixed solution was recrystallized to obtain E-2.

[0087]In a 250mL three-neck flask, under nitrogen protection, 0.02mol reactant A-...

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Abstract

The invention discloses a phosphorescent platinum complex used as an OLED doping material and an application thereof, belonging to the technical field of semiconductors. The structure of the phosphorescent platinum complex is shown in general formula (1): the present invention also discloses the application of the phosphorescent platinum complex as OLED doping material. The organic electroluminescent material uses metallic platinum as the structural core and is applied to OLED devices. As a doping material for the light-emitting layer material, it can emit phosphorescence under the action of an electric field, so that the current efficiency, power efficiency and external quantum efficiency of the device are all obtained. Great improvement; at the same time, the improvement of device life is very obvious. The phosphorescent platinum complex of the invention has a good application effect in OLED light-emitting devices, and has a good industrialization prospect.

Description

technical field [0001] The invention relates to the technical field of semiconductor materials, in particular to a phosphorescent platinum complex used as an OLED doping material and an application thereof. Background technique [0002] Research on improving the performance of OLED light-emitting devices includes: reducing the driving voltage of the device, improving the luminous efficiency of the device, and increasing the service life of the device. In order to realize the continuous improvement of the performance of OLED devices, not only the innovation of OLED device structure and manufacturing process is required, but also the continuous research and innovation of OLED photoelectric functional materials to create higher-performance OLED functional materials. [0003] Organic electroluminescent materials are divided into two categories: organic electroluminescent materials and organic electrophosphorescent materials. Among them, organic electroluminescence is the result...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D401/14C07D471/04C07D498/04C07D519/00C07D491/048C07D405/14C07D471/14C07D487/04C07D495/04C07D513/04C07D413/14C07D417/14C07D491/22C07D491/147C07D495/14C09K11/06H01L51/50H01L51/54
CPCC07D401/14C07D471/04C07D498/04C07D519/00C07D491/048C07D405/14C07D471/14C07D487/04C07D495/04C07D513/04C07D413/14C07D417/14C07D491/22C07D491/147C07D495/14C09K11/06C09K2211/185H10K85/346H10K50/11
Inventor 叶中华张兆超崔明
Owner JIANGSU SUNERA TECH CO LTD
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