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Polymer, composition for organic electroluminescent element, organic electroluminescent element, organic EL display device and organic EL lighting

A polymer and repeating unit technology, applied in the field of polymers, can solve the problems of not yet reaching the practical level, poor driving stability, difficult lamination by wet film-forming method, etc., achieving excellent electrochemical stability, long driving life, technology high value effect

Active Publication Date: 2020-06-23
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the wet film formation method is difficult to laminate, so compared with the device obtained by the vacuum evaporation method, the driving stability is poor, and the current situation is that it has not yet reached the practical level except for some

Method used

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  • Polymer, composition for organic electroluminescent element, organic electroluminescent element, organic EL display device and organic EL lighting
  • Polymer, composition for organic electroluminescent element, organic electroluminescent element, organic EL display device and organic EL lighting
  • Polymer, composition for organic electroluminescent element, organic electroluminescent element, organic EL display device and organic EL lighting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0389] [Synthesis of Monomer (Compound 3)]

[0390] Compound 1 was synthesized as follows.

[0391] Synthesis of monomer

[0392] [chemical 16]

[0393]

[0394] Put 4-sec-butylaniline (37.36g, 250.34mmol), bromobenzene (38.52g, 245.33mmol) and sodium tert-butoxide (57.77g, 601.05mmol), toluene (500ml) into the flask, fully carry out Replaced with nitrogen, heated to 60°C (Solution A). Add 1,1'-bis(diphenylphosphino)ferrocene ( 1.09g, 1.96mmol), heated to 60°C (solution B). Solution B was added to Solution A in a nitrogen stream, and stirred at 100° C. for 4.0 hours. After naturally cooling to room temperature, ethyl acetate (300ml) and brine (100ml) were added to the reaction solution and stirred, followed by liquid separation, and the aqueous layer was extracted with ethyl acetate (100ml×2 times), the organic layers were combined, and washed with Concentrate after drying over magnesium sulfate. Furthermore, purification was carried out by silica gel column chromato...

Embodiment 2

[0413] make out figure 1 The organic electroluminescence device shown.

[0414] After depositing an indium tin oxide (ITO) transparent conductive film on the glass substrate 1 by sputtering, it patterned 2mm-wide stripes using common photolithography and hydrochloric acid etching to form an anode with a film thickness of 70nm. 2. After the patterned ITO substrate was cleaned in the order of ultrasonic cleaning with aqueous surfactant solution, water washing with ultrapure water, ultrasonic cleaning with ultrapure water, and water washing with ultrapure water, it was dried with compressed air, Finally, ultraviolet ozone cleaning is carried out.

[0415] Next, the polymer 1 (P1) synthesized in Example 1, 4-isopropyl-4'-methyldiphenyliodonium tetrakis(pentafluorophenyl)boronic acid shown in structural formula (A1) was prepared A coating solution for forming a hole injection layer of a salt and ethyl benzoate. This coating solution was formed into a film on the anode 2 by spin...

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Abstract

The present invention provides a polymer with high hole injection and transport ability and high durability, a composition for organic electroluminescent elements containing the polymer, an organic electroluminescent element with high luminous efficiency manufactured using the composition, and A display device and a lighting device using the organic electroluminescence element. The polymer of the present invention contains a unit represented by formula (1) as a repeating unit. (where, Ar 1 , R 1 , T 1 The definitions are the same as those described in the specification, respectively. )

Description

technical field [0001] The present invention relates to a polymer, and more specifically, to a polymer useful as a charge-transporting material of an organic electroluminescent device, a composition for an organic electroluminescent device containing the polymer, and a layer formed using the composition An organic electroluminescence element, an organic EL (Electro Luminescence, electroluminescence) display device and an organic EL lighting having the organic electroluminescence element. Background technique [0002] As a method for forming an organic layer in an organic electroluminescence element, a vacuum vapor deposition method and a wet film-forming method are mentioned. The vacuum vapor deposition method has the advantages of being easy to improve the injection of charges from the anode and / or cathode and confining excitons in the light-emitting layer because it is easy to form layers. On the other hand, the wet film forming method does not require a vacuum process an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02C08L79/02G09F9/30H01L27/32H01L51/50
CPCC08G73/02C08L79/02G09F9/30H10K50/17C08G73/0206F21Y2115/15
Inventor 饭田宏一朗李延军梅基友和
Owner MITSUBISHI CHEM CORP
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