Unlock instant, AI-driven research and patent intelligence for your innovation.

An organometallic complex luminescent material

A light-emitting material, organometallic technology, applied in the field of dopants, can solve the problems of poor light-emitting effect and low fluorescence quantum efficiency, etc.

Active Publication Date: 2021-05-11
GUANGDONG AGLAIA OPTOELECTRONICS MATERIALS
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

People such as Mark use porphyrin as a ligand to form a Pt organometallic complex (US6303238) with a unique configuration, but the luminescence effect is not good, and the quantum efficiency of the device is only less than 1%; A tetradentate ligand with a base structure (US20050233167), whose light emission covers the wavelength range from green to red
However, there is still the problem of low fluorescence quantum efficiency (about 40%) of red light molecules.

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
  • An organometallic complex luminescent material
  • An organometallic complex luminescent material
  • An organometallic complex luminescent material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056]

[0057] Molecule Preparation:

[0058]

[0059] Compounds 1, 2, 4 and the inorganic salts, catalysts, catalyst ligands and solvents used in the reaction process are all commercially available raw materials.

[0060] Synthesis of compound 3: 18.6 g (0.1 mol) of compound 1 and 15.2 g (0.11 mol) of compound 2 were added to a round bottom flask. Then add 0.575g (0.001mol) Pd (dba) 2 , 0.82g (0.002mol) SPhos, vacuumized for 30 minutes and then filled with nitrogen protection; 400ml of toluene nitrogen bubbled for 30min, then added to the flask; 150ml of 2M potassium carbonate aqueous solution with nitrogen bubbled for 30min, then added to the flask. After reacting for 12 hours under nitrogen atmosphere, it was cooled, washed with water, dried over anhydrous magnesium sulfate, and filtered. After distilling off the toluene solvent from the organic phase, the solid was recrystallized with n-hexane / dichloromethane system. 18.3 g of a light yellow solid was obtained wi...

Embodiment 2

[0065]

[0066] Molecule Preparation:

[0067] The preparation method is the same as the synthetic route of S1 molecule, the only difference is that compound 7 is used instead of compound 2. The molecular formula of compound 7 is shown in formula (III):

[0068]

[0069] The synthetic route of compound 7 is as follows:

[0070]

[0071] The structure of comparative example E1 is shown in formula (IV):

[0072]

[0073] For the synthesis of compound E1, refer to the synthesis method in the patent US20050233167. Mass Spectrum (APCI): 510

[0074] The following are application examples of the compounds of the present invention.

[0075] Device structure such as figure 1 .

[0076] Materials used in devices TCTA(4,4′,4″-Tri(9-carbazoyl)triphenylamine), TAPC(1,1-Bis[4-[N,N'-di(p-tolyl)amino]phenyl]cyclohexane) , TmPYPB (1,3,5-tri[(3-pyridyl)-phen-3-yl]benzene) are commercially available materials, and their specific structures are shown in formula (V):

[0077] ...

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

No PUM Login to View More

Abstract

The present invention relates to an organometallic complex luminescent material, which has the structural formula described in formula (1), wherein A, B, and C are independently substituted or unsubstituted C, N, O, and S atoms; linking A and B atoms The dotted ring in is a substituted or unsubstituted conjugated ring structure; L1, L2, L3, L4 are independently single or double bonds, where L3 and L4 are the conjugated rings linking A and B atoms Part of the structure; X, X1, Y, Y1 are independently C, N, O, S atoms; Ar1 ​​and Ar2 are independently substituted or unsubstituted conjugated ring structures; M is Pt, W, Au atoms. The organometallic complex in the invention has high fluorescence quantum efficiency, good thermal stability and low quenching constant, and can manufacture red light OLEDs with high efficiency and low efficiency roll-off.

Description

technical field [0001] The invention relates to an organic metal complex light-emitting material, especially a dopant used in an OLED light-emitting device, which plays the role of photon emission in the light-emitting layer. Background technique [0002] OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) technology has been published since 1987 by Dr. Deng Qingyun of Kodak Company (Organic electroluminescent diodes.AppliedPhysics Letters.1987, Volume 51, Issue 12, Page 913). It has been thriving for 30 years. In the past five years, due to its uniqueness, OLED technology has attracted a lot of attention and investment from the industry. In the field of display, compared with the current mainstream LCD (Liquid Crystal Display, liquid crystal display) display technology, OLED display has great advantages in high brightness, high contrast, high resolution, ultra-thin display, and flexible display; in the field of lighting, OLED lighting It has great advantages...

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 Patents(China)
IPC IPC(8): C07F15/00C07D213/53C07D213/68C07D401/14C07D401/04C07D217/14C09K11/06H01L51/50H01L51/54H10K99/00
CPCC07D213/53C07D213/68C07D217/14C07D401/04C07D401/14C07F15/00C09K11/06Y02E10/549Y02P70/50H10K85/346H10K50/11H10K2101/10C07F15/0093C09K2211/185
Inventor 于明泉戴雷蔡丽菲
Owner GUANGDONG AGLAIA OPTOELECTRONICS MATERIALS