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Organometallic complex for red light organic electroluminescent materials

An organometallic and luminescent technology, applied in luminescent materials, organic chemistry, and compounds containing elements of Group 8/9/10/18 of the periodic table, etc., can solve problems such as poor thermal stability, short life, and low luminous efficiency , to achieve the effects of good thermal stability, long life and high luminous efficiency

Inactive Publication Date: 2018-01-16
EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the prior art, compared with fluorescent materials, phosphorescent materials not only start late, but also have problems such as poor thermal stability, low luminous efficiency, short life, and low color saturation, which have been a very challenging problem so far.

Method used

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  • Organometallic complex for red light organic electroluminescent materials
  • Organometallic complex for red light organic electroluminescent materials
  • Organometallic complex for red light organic electroluminescent materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Synthesis of Example 1 Compound 1

[0046]

[0047] 1

[0048] (1) Synthesis of Ligand 11

[0049]

[0050] Weigh compound A1 (5 mmol) and compound B1 (6 mmol) into a three-necked flask, add Pd (pph 3 ) 4 (0.15 mmol) as a catalyst, and adding K 2 CO 3 (16 mmol), vacuumize-nitrogen-vacuumize on the double-row tube, cycle three times, and finally protect the reaction system with nitrogen. Add 15 mL each of dimethyl ether and water with a syringe, and heat to reflux. Reflux for about 24 h and cool to room temperature. After rotary evaporation and column purification, the product 11 was obtained.

[0051] (2) Synthesis of Ligand 12

[0052]

[0053] Weigh compound C1 (5 mmol) into a three-neck flask, add dioxane liquid, and heat to dissolve C1. Add Ca(OH) to the solution 2or Ba(OH) 2 (10 mmol), and D1 (6 mmol) was added dropwise to the reaction system, and heated to reflux for 30 min. After the reaction system was cooled to room temperature, it was trea...

Embodiment 2

[0063] Synthesis of Example 2 Compound 5

[0064]

[0065] (1) Synthesis of Ligand 51

[0066]

[0067] Weigh compound A1 (5 mmol) and compound B5 (6 mmol) into a three-necked flask, add Pd (pph 3 ) 4 (0.15 mmol) as a catalyst, and adding K 2 CO 3 (16 mmol), vacuumize-nitrogen-vacuumize on the double-row tube, cycle three times, and finally protect the reaction system with nitrogen. Add 15 mL each of dimethyl ether and water with a syringe, and heat to reflux. Reflux for about 24 h and cool to room temperature. After rotary evaporation and column purification, the product 51 was obtained.

[0068] (2) Synthesis of Ligand 52

[0069]

[0070] Weigh compound C5 (5 mmol) into a three-necked flask, add dioxane liquid, and heat to dissolve C5. Add Ca(OH) to the solution 2 or Ba(OH) 2 (10 mmol), and D5 (6 mmol) was added dropwise to the reaction system, and heated to reflux for 30 min. After the reaction system was cooled to room temperature, it was treated with ...

Embodiment 3

[0080] Example 3 Synthesis of Compound 12

[0081]

[0082] (1) Synthesis of Ligand 121

[0083]

[0084] Weigh compound A12 (5 mmol) and compound B1 (6 mmol) into a three-necked flask, add Pd (pph 3 ) 4 (0.15 mmol) as a catalyst, and adding K 2 CO 3 (16 mmol), vacuumize-nitrogen-vacuumize on the double-row tube, cycle three times, and finally protect the reaction system with nitrogen. Add 15 mL each of dimethyl ether and water with a syringe, and heat to reflux. Reflux for about 24 h and cool to room temperature. After rotary evaporation and column purification, the product 121 was obtained.

[0085] (2) Synthesis of Ligand 122

[0086]

[0087] Weigh compound C1 (5 mmol) into a three-neck flask, add dioxane liquid, and heat to dissolve C1. Add Ca(OH) to the solution 2 or Ba(OH) 2 (10 mmol), and D12 (6 mmol) was added dropwise to the reaction system, and heated to reflux for 30 min. After the reaction system was cooled to room temperature, it was treated w...

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Abstract

The invention discloses an organometallic complex for red light organic electroluminescent materials. The organometallic complex has a structure shown as general formula (I) in the specification, wherein M is metal with an atomic number of greater than 40, o is the total ligand number of metal M, n and m are respectively the numbers of L1 and L2, and n is greater than or equal to 1, m is greater than or equal to 1, and o is greater than or equal to 3; L1 and L2 are independently substituted or unsubstituted C-N cyclometalated ligands of C11-C30 respectively; L3 is an auxiliary ligand, and hasa structure shown as formula (II) in the specification, wherein X and Y are selected from B or N, and X and Y are different; R is selected from hydrogen, deuterium, halogen, alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocyclic alkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl. The organometallic complex designed by the inventioncan be used as an OLED red light doped material for making of OLED devices. The luminescent material has the advantages of good thermal stability, high luminous efficiency, long service life and the like, and has application prospect in the AMOLED industry.

Description

technical field [0001] The invention relates to an organic electroluminescent compound, in particular to an organometallic complex used for red light organic electroluminescent materials. Background technique [0002] At present, TFT (Thin Film Transistor, Thin Film Field Effect Transistor)-LCD is the main display screen. Since it is a non-self-illuminating display, it must project light through the backlight and pass through the TFT-LCD panels in sequence. Polarizers, glass substrates, liquid crystal layers, color filters, glass substrates, polarizers and other related components must finally enter the human eye for imaging to achieve the display function. It is precisely because of the above-mentioned complicated display process that its display screen has shortcomings such as slow response rate, power consumption, and narrow viewing angle in the actual application process, which is not enough to become a perfect display screen. [0003] As a new display technology, organ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C09K11/06H01L51/00H01L51/54
Inventor 梁花
Owner EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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