Ir(III) complex, preparation method of Ir(III) complex, and application of Ir(III) complex to preparation of electroluminescent device

A technology of electroluminescent devices and complexes, applied in the direction of electric solid devices, electrical components, luminescent materials, etc., can solve the problems that have not yet found high-efficiency and standard red and blue light materials, achieve improved luminous brightness, good application prospects, Stable and reproducible results

Inactive Publication Date: 2017-06-30
SUN YAT SEN UNIV
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] An important restrictive factor for the industrialization of OLED today is that efficient and standard red and blue light materials have not yet been found.

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
  • Ir(III) complex, preparation method of Ir(III) complex, and application of Ir(III) complex to preparation of electroluminescent device
  • Ir(III) complex, preparation method of Ir(III) complex, and application of Ir(III) complex to preparation of electroluminescent device
  • Ir(III) complex, preparation method of Ir(III) complex, and application of Ir(III) complex to preparation of electroluminescent device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1I

[0052] Example 1 Ir (III) complex (Ir-Fppy 2 -phq) preparation

[0053] 1. The preparation method of the Ir(III) complex is as follows:

[0054] (1) Synthetic intermediate [Ir(Fppy) 2 Cl] 2 :

[0055] IrCl 3 ·3H 2 O 0.604g (1.7mmol) and Fppy 0.719g (3.7mmol) were added to the mixed solution of 30ml ethylene glycol ether / water (v:v=3:1), N 2 protection, 120°C, react for 24h, add 10ml H 2 O to adjust the polarity, filter, and wash the filter cake with a small amount of EtOH, then with a small amount of ether, and finally with a large amount of n-hexane, and dry to obtain a yellow solid with a yield of 40%. The product was directly put into the next reaction without further post-processing.

[0056] The structural formula of Fppy ligand is as formula (II):

[0057]

[0058] [Ir(Fppy) 2 Cl] 2 The structure of is as shown in formula (III):

[0059]

[0060] (2) Synthesis of complex Ir-Fppy 2 -phq:

[0061] [Ir(Fppy) 2 Cl] 2 0.12g (0.1mmol) and 8-hydroxyquinol...

Embodiment 2

[0067] Example 2 Photoluminescence test of Ir(III) complexes

[0068] A photoluminescence test was performed on the Ir(III) complex prepared in Example 1 (using an EDINBURGH FLS980 fluorometer, with an excitation wavelength of 300 nm).

[0069] Test results such as figure 1 shown. The photoluminescence test shows that the Ir(III) complex with the structure of formula (I) emits red light in the wavelength range of 600-750nm.

Embodiment 3

[0070] Example 3 Preparation of electroluminescent device

[0071] 1. Preparation of vapor-deposited multilayer electroluminescent devices:

[0072] The Ir-Fppy 2 -phq complex and host material 4,4'-bis(carbazol-9-yl)biphenyl (CBP) doped evaporation, according to CBP:Ir-Fppy 2 The mass ratio of -phq complex is 100:6, as the light-emitting layer EML; all materials are prepared by evaporation method on the ITO glass substrate with a multi-layer structure electroluminescent device, which is Ir-Fppy 2 -phq complex LED devices.

[0073] 2. Performance testing of electroluminescent devices

[0074] (1) Conduct electroluminescence test on the prepared electroluminescent device (use PR-735 spectrum test system to test). The electroluminescence device emits an electroluminescence spectrum similar to the photoluminescence spectrum, and the test results are as follows: Figure 2~3 shown.

[0075] It can be seen from the figure that the device produces electroluminescence in the 600...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses an Ir(III) complex, a preparation method of the Ir(III) complex, and application of the Ir(III) complex to preparation of an electroluminescent device. The structural formula of the Ir(III) complex is shown in the description. The preparation method of the Ir(III) complex Ir-Fppy2-phq comprises the following steps: enabling an Fppy ligand and IrCl3 to react to obtain an intermediate [Ir(Fppy)2Cl]2, and further enabling the intermediate [Ir(Fppy)2Cl]2 to react with a phq ligand to obtain the target product Ir-Fppy2-phq. The Ir(III) complex gives off red light, is good in stability and reproducibility, and can be used as a luminescent material to prepare the electroluminescent device. The prepared electroluminescent device has the advantages of good photoluminescence stability and pure light color, and is easy to be compounded with green light and blue light materials to obtain a white light electroluminescent device. The Ir(III) complex has an excellent application prospect in the fields of LEDs.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials. More specifically, it relates to an Ir(III) complex, its preparation method and its application in the preparation of electroluminescent devices. Background technique [0002] Organic Light Emitting Diodes OLED (Organic Light Emitting Diodes OLED) has many advantages such as high brightness, small thickness, energy saving and environmental protection. [0003] An important restrictive factor for OLED industrialization today is that efficient and standard red and blue light materials have not been found yet. [0004] Because the d orbitals of heavy metals such as platinum, iridium, and osmium have a strong spin coupling effect, the singlet and triplet states of the complexes are mixed, which improves the ability of the complexes to emit phosphorescence. The use of heavy metal complexes in the light-emitting layer of OLED can make the theoretical internal quantum efficiency of the d...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07F15/0033C09K2211/1029C09K2211/185H10K85/342H10K50/11
Inventor 潘梅尹少云陈永信陈玲孙思思张露尹苏成勇
Owner SUN YAT SEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap