Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Organic blue light electrophosphorescent metal iridium complex as well as preparation method and application of organic blue light electrophosphorescent metal iridium complex

A technology of iridium metal complexes and phosphorescent materials, which is applied in the field of iridium metal complexes of blue-light organic electrophosphorescent materials and its preparation, can solve the problems of blue-light phosphorescent materials’ emission color purity, luminous efficiency device efficiency attenuation bottleneck, etc., and achieve good blue light Luminous efficiency, convenient operation, simple and easy preparation method

Inactive Publication Date: 2015-03-18
OCEANS KING LIGHTING SCI&TECH CO LTD +2
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] People's research on iridium metal complexes of organic electrophosphorescent materials has been in-depth, but there are bottlenecks in the luminous color purity, luminous efficiency and device efficiency decay of blue phosphorescent materials.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Organic blue light electrophosphorescent metal iridium complex as well as preparation method and application of organic blue light electrophosphorescent metal iridium complex
  • Organic blue light electrophosphorescent metal iridium complex as well as preparation method and application of organic blue light electrophosphorescent metal iridium complex
  • Organic blue light electrophosphorescent metal iridium complex as well as preparation method and application of organic blue light electrophosphorescent metal iridium complex

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] This example provides a bis(2-(4',6'-difluoro-5'-trifluoromethylphenyl)pyrimidine-N,C 2 ')(2,4-bis(trifluoromethyl)-5-(pyridine-2'-yl)pyrrole)iridium complex, the chemical structural formula of which is shown in P1:

[0064]

[0065] The preparation steps of the above P1 are as follows:

[0066] S10. Provide compound A1 (2-bromopyrimidine) and compound B (2,4-difluoro-3-trifluoromethylphenylboronic acid) represented by the following structural formula:

[0067]

[0068] S20. Synthesis of compound C1 (2-(2',4'-difluoro-3'-trifluoromethylphenyl)pyrimidine)

[0069] Under nitrogen protection, combine 1.59g (10mmol) 2-bromopyrimidine, 2.71g (12mmol) 2,4-difluoro-3-trifluoromethylphenylboronic acid and 0.58g (0.5mmol) tetrakis (triphenylphosphine) Palladium was dissolved in 40mL toluene and stirred for 10min. Subsequently, 20 mL of an aqueous solution containing 2.76 g (20 mmol) of potassium carbonate was added dropwise to the reaction system. Heated and stirred at...

Embodiment 2

[0094]This example provides a bis(2-(4',6'-difluoro-5'-trifluoromethylphenyl)-5-methylpyrimidine-N,C 2 ')(2,4-bis(trifluoromethyl)-5-(pyridine-2'-yl)pyrrole)iridium complex, the chemical structural formula of which is shown in P2:

[0095]

[0096] The preparation steps of above-mentioned P2 are as follows:

[0097] S10. Provide compound A2 (2-bromo-5-methylpyrimidine) and compound B (2,4-difluoro-3-trifluoromethylphenylboronic acid) represented by the following structural formula:

[0098]

[0099] S20. Synthesis of compound C2 (2-(2',4'-difluoro-3'-trifluoromethylphenyl)-5-methylpyrimidine)

[0100] Under nitrogen protection, 1.73g (10mmol) 2-bromo-5-methylpyrimidine, 2.48g (11mmol) 2,4-difluoro-3-trifluoromethylphenylboronic acid and 0.28g (0.4mmol) dichlorobis (Triphenylphosphine)palladium was dissolved in 50mL DMF and stirred for 10min. Subsequently, 25 mL of an aqueous solution containing 3.18 g (30 mmol) of sodium carbonate was added dropwise to the reaction sy...

Embodiment 3

[0123] This example provides a bis(2-(4',6'-difluoro-5'-trifluoromethylphenyl)-5-tert-butylpyrimidine-N,C 2 ')(2,4-bis(trifluoromethyl)-5-(pyridine-2'-yl)pyrrole)iridium complex, the chemical structural formula of which is shown in P3:

[0124]

[0125] The preparation steps of above-mentioned P3 are as follows:

[0126] S10. Provide compound A3 (2-bromo-5-tert-butylpyrimidine) and compound B (2,4-difluoro-3-trifluoromethylphenylboronic acid) represented by the following structural formula:

[0127]

[0128] S20. Synthesis of compound C3 (2-(2',4'-difluoro-3'-trifluoromethylphenyl)-5-tert-butylpyrimidine)

[0129] Under nitrogen protection, 2.15g (10mmol) 2-bromo-5-tert-butylpyrimidine, 3.39g (15mmol) 2,4-difluoro-3-trifluoromethylphenylboronic acid and 0.21g (0.3mmol) dichloro Bis(triphenylphosphine)palladium was dissolved in 35mL DMF and stirred for 10min. Subsequently, 15 mL of an aqueous solution containing 1.38 g (10 mmol) of potassium carbonate was added dropwis...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Sheet resistanceaaaaaaaaaa
Maximum lumen efficiencyaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of photoelectric materials and particularly relates to an organic blue light electrophosphorescent metal iridium complex with the structural formula as shown in the specification, wherein r is a hydrogen atom, c1-c20 alkyl or c1-c20 alkoxy. By using the organic blue light electrophosphorescent metal iridium complex, blue light emitting wavelength with relatively high light emitting efficiency can be obtained; and the organic blue light electrophosphorescent metal iridium complex also has relatively high phosphorescent quantum efficiency as well as relatively good dissolving property and processability. The invention also provides a preparation method of the organic blue light electrophosphorescent metal iridium complex and application of the organic blue light electrophosphorescent metal iridium complex to an organic electroluminescent device.

Description

technical field [0001] The invention relates to the field of photoelectric materials, in particular to a blue light organic electrophosphorescent material iridium metal complex and its preparation method and application. Background technique [0002] Organic electroluminescence refers to a luminescence phenomenon in which organic materials directly convert electrical energy into light energy under the action of an electric field. Due to the limitation of spin statistics theory, the theoretical internal quantum efficiency limit of fluorescent materials is only 25%. How to make full use of the remaining 75% of phosphorescence to achieve higher luminous efficiency has become a hot research direction in this field since then. The complexes of iridium, ruthenium, platinum, etc. can obtain high emission energy from their own triplet state, and the metal iridium (III) compound, due to its good stability, has mild reaction conditions during the synthesis process and has a high elect...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07F15/00C09K11/06H01L51/54
CPCC09K11/06C07F15/0033C09K2211/185H10K85/342
Inventor 周明杰王平张娟娟钟铁涛
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com