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

Compound and preparation method, and organic light-emitting display device

A luminescent display and compound technology, applied in chemical instruments and methods, organic chemistry, luminescent materials, etc., can solve the problems of poor molecular thermal stability, low triplet energy level, low glass transition temperature, etc., and achieve polymer thermal stability , macromolecular density, and the effect of improving luminous efficiency

Active Publication Date: 2022-05-20
WUHAN TIANMA MICRO ELECTRONICS CO LTD +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing phosphorescent host materials have disadvantages such as low triplet energy level, low molecular density, low glass transition temperature, and poor molecular thermal stability.

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
  • Compound and preparation method, and organic light-emitting display device
  • Compound and preparation method, and organic light-emitting display device
  • Compound and preparation method, and organic light-emitting display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0087] According to one embodiment of the present invention, the compound is selected from:

[0088]

[0089] any of the

[0090] Among them, D represents the electron donor unit, X 5 selected from C atoms or N atoms,

[0091] a and b are each independently selected from 0 or 1, A 1 and A 2 Each independently selected from substituted or unsubstituted C1-C20 alkyl, substituted or unsubstituted C3-C20 cycloalkyl, substituted or unsubstituted C1-C20 alkoxy, substituted or unsubstituted C3-C20 heterocycle Any one or more of substituted or unsubstituted C6-C40 aryl, substituted or unsubstituted C10-C40 condensed aryl, and substituted or unsubstituted C4-C40 heteroaryl.

[0092] According to one embodiment of the present invention, the D unit is selected from one of aniline, aniline derivative substituents, carbazolyl, carbazole derivative substituents, acridinyl, acridine derivative substituents or more than one.

[0093] According to one embodiment of the present inventi...

Embodiment 1～16

[0199] Using density functional theory (DFT), for compound H1 to compound H16, using the Gaussian 09 program package under the B3LYP / 6-31G(d) functional basis set, the distribution of molecular frontier orbitals was optimized and calculated.

[0200] figure 1 The orbital arrangement of compound H3 is shown, wherein, figure 1 (a) is the HOMO energy level distribution diagram of compound H3, figure 1 (b) is the LUMO energy level distribution diagram of compound H3. from figure 1 It can be clearly seen that the HOMO and LUMO of compound H3 are respectively arranged on different units, achieving a better separation between the donor and the donor, which is beneficial to the resonance between the donor and the donor group, Reduce energy difference △E between systems ST , thereby improving the intersystem crossing ability from singlet to triplet.

[0201] The relevant data of Examples 1-16 are shown in Table 2. It can be seen from Table 2 that the triplet energy levels of the ...

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 relates to the field of light-emitting materials, in particular to a compound, a preparation method, and an organic light-emitting display device. The compound has the structure shown below: the compound is used in organic electroluminescent devices and can be used as a host material, a doping material, a hole transport layer material, an electron transport layer material, and a capping layer material, and can reduce the driving voltage, Improve luminous efficiency, brightness, thermal stability, color purity and device life.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence materials, in particular to a compound and a preparation method, and an organic light-emitting display device. Background technique [0002] The luminescent mechanism of organic electroluminescent materials (OLED) can be divided into two types: electroluminescent luminescence and electrophosphorescence. Fluorescence is the radiative attenuation transition of singlet excitons, and phosphorescence is caused by the radiative decay of triplet excitons to the ground state. emitted light. The internal quantum efficiency of fluorescent materials does not exceed 25%, while the internal quantum efficiency of electrophosphorescent materials theoretically reaches 100%. [0003] However, the existing phosphorescent host materials have disadvantages such as low triplet energy level, low molecular density, low glass transition temperature, and poor molecular thermal stability. Contents of...

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): C07D519/00C07D471/04C07D401/14C07D405/14C07D487/04C09K11/06H01L51/50H01L51/54H10K99/00
CPCC07D417/14C09K11/06C09K2211/1092C09K2211/1088C09K2211/1029C09K2211/1037C09K2211/1033C09K2211/1044H10K85/6576H10K85/6574H10K85/6572H10K85/657H10K50/15H10K50/16H10K50/11C07D519/00C07D401/14H10K85/654H10K2101/10C09K2211/1018H10K85/615H10K85/636
Inventor 张磊王湘成高威牛晶华
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD