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Red light conjugated polymer of side-chain quinoline ligand-containing iridium compound and light-emitting device

A technology of conjugated polymers and iridium complexes, which is applied in the manufacture of electrical solid devices, semiconductor devices, and semiconductor/solid-state devices. It can solve the problems of low luminous efficiency of light-emitting devices and achieve high luminous efficiency and stable performance.

Active Publication Date: 2010-07-14
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the luminous efficiency of light-emitting devices prepared with them is low

Method used

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  • Red light conjugated polymer of side-chain quinoline ligand-containing iridium compound and light-emitting device
  • Red light conjugated polymer of side-chain quinoline ligand-containing iridium compound and light-emitting device
  • Red light conjugated polymer of side-chain quinoline ligand-containing iridium compound and light-emitting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Polymerization Example 1: Synthesis of phosphorescent polymer (PF0.5R0) with iridium complex content z=0.005, ie 0.5%:

[0073] The reaction formula is as follows:

[0074]

[0075] Under argon protection, 2,7-dibromo-9,9-dioctylfluorene (0.995mmol, 0.2715g) and DBrFR0 monomer (0.005mmol , 6.9mg), bis-boronate monomer of fluorene (0.5mmol, 0.2792g), 1% mmolPd (PPh 3 ) 4 , 20mg Aliguat336, 8mL toluene and 2mL 2M K 2 CO 3 Aqueous solution, under the protection of argon, stirred and reacted in the dark at 90°C for 24 hours, then added 100 mg of phenylboronic acid and 0.5 mL of bromobenzene successively, and reacted for 12 hours respectively. After the reaction, inject the reaction solution into methanol, filter and vacuum-dry the precipitated solid, extract with acetone for 48 hours, then dissolve methanol with dichloromethane for several times, and finally obtain a fibrous polymer after vacuum-drying.

[0076] The structural characterization of the obtained polyme...

Embodiment 4

[0088] Polymerization Example 4: Synthesis of phosphorescent polymer (PFCz0.5R0) with iridium complex content z=0.005, ie 0.5%:

[0089] The reaction formula is as follows:

[0090]

[0091] Under argon protection, 3,6-dibromo-N-decylcarbazole (0.495mmol, 0.2303g) and DBrCzR0 monomer (0.005mmol, 6.6 mg), bis-boronate monomer of fluorene (0.5mmol, 0.2792g), 1% mmolPd (PPh 3 ) 4 , 20mg Aliguat336, 8mL toluene and 2mL 2M K 2 CO 3 Aqueous solution, under the protection of argon, stirred and reacted in the dark at 90°C for 24 hours, then added 100 mg of phenylboronic acid and 0.5 mL of bromobenzene successively, and reacted for 12 hours respectively. After the reaction, inject the reaction solution into methanol, filter and vacuum-dry the precipitated solid, extract with acetone for 48 hours, then dissolve methanol with dichloromethane for several times, and finally obtain a fibrous polymer after vacuum-drying.

[0092] Structural characterization of the resulting polymer: ...

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Abstract

The invention provides a red light conjugated polymer of a side-chain quinoline ligand-containing iridium compound, and an organic electric light-emitting device made from the red light conjugated polymer and a preparation method. At least one light-emitting layer with the red light conjugated polymer of the side-chain quinoline ligand-containing iridium compound is coated between the anode and the cathode of the electric light-emitting device, wherein the light-emitting layer is connected with the cathode. Therefore, the invention has the advantages of high light-emitting efficiency and stable performance.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to a red-light conjugated polymer whose side chain contains iridium complexes of quinoline ligands and an organic electroluminescent device using the polymer. Background technique [0002] Organic Light-Emitting Diodes (OLEDs) have attracted extensive attention from academia and industry due to their advantages such as high brightness, low driving voltage, light weight, and low processing cost for large-area flexible displays. Become the first choice for future display technology. [0003] According to the different luminescent principles, organic electroluminescent materials can be divided into two categories: fluorescence and phosphorescence. Since phosphorescent materials can simultaneously utilize singlet and triplet excitons, the internal quantum efficiency of the device can theoretically reach 100%. Therefore, transition metal complexes are widely used in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/02C08G61/12C09K11/06H01L51/50H01L51/54H01L51/56
Inventor 王利祥马志华丁军桥王斌隋丹
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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