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CN-122010941-A - Organic condensed ring compound and organic electroluminescent device prepared from same

CN122010941ACN 122010941 ACN122010941 ACN 122010941ACN-122010941-A

Abstract

The invention belongs to the technical field of materials, and particularly relates to an organic fused ring compound and an organic electroluminescent device prepared from the same. The compound of the invention forms a rigid main body structure with a twisted structure by fusing the alicyclic ring and the spiro ring, and has higher thermal stability and high solubility. When the compound is applied to an organic light emitting device, an organic light emitting device having high efficiency, low voltage, and long lifetime characteristics can be obtained.

Inventors

  • MU GUANGYUAN
  • ZHUANG SHAOQING
  • TAO KANG

Assignees

  • 湖北尚赛光电材料有限公司

Dates

Publication Date
20260512
Application Date
20251216

Claims (10)

  1. 1. An organic fused ring compound, wherein the compound has a structural formula represented by formula one: Wherein A is an aliphatic hydrocarbon ring of C 5 to C 6 , R 1 、R 2 is independently selected from substituted or unsubstituted aryl of C 6 to C 12 , R 1 and R 2 are independently each other, or R 1 and R 2 are bonded by a single bond to form a condensed ring structure; The substituted aryl of C 6 to C 12 is C 6 to C 12 wherein one or more H at any position on the aryl is substituted with R' which is M is selected from 0 or 1, ar 1 is selected from arylene of C 6 to C 12 , R is selected from substituted or unsubstituted alkyl of C 1 to C 4 , aryl of C 6 to C 30 , arylamine of C 6 to C 30 , heteroaryl of C 6 to C 30 ; The substituents in the substituted aryl groups of C 6 to C 30 , the arylamine groups of C 6 to C 30 and the heteroaryl groups of C 6 to C 30 are one or more of deuterium, cyano, alkyl groups of C 1 -C 4 and phenyl groups.
  2. 2. The organic fused ring compound according to claim 1, wherein R 1 、R 2 is the same or different and is selected from the group consisting of substituted or unsubstituted monocyclic aryl, substituted or unsubstituted polycyclic aryl formed by 2 monocyclic aryl groups through a single bond or fused bond; Ar 1 is selected from monocyclic arylene, polycyclic arylene formed by 2 monocyclic arylene groups through a single bond or fused bond.
  3. 3. The organic fused ring compound according to claim 1, wherein the fused ring structure formed by single bond bonding between R 1 and R 2 has the following structural formula: 、 、 、 , Is the attachment site for R 1 、R 2 in formula one.
  4. 4. The organic fused ring compound of claim 1, wherein Ar 1 is selected from the group consisting of phenylene, biphenylene, and naphthylene.
  5. 5. The organic fused ring compound according to claim 1, wherein: The unsubstituted aryl group of C 6 to C 30 is selected from R 3 to R 7 are respectively and independently selected from H, C 1 -C 4 alkyl or phenyl, R 3 to R 7 are mutually and independently bonded with a central phenyl group through a single bond, or are bonded and condensed through a single bond between any two adjacent substituents in R 3 to R 7 , or are condensed with the central phenyl group through non-adjacent 1-2 substituents in R 3 to R 7 ; The unsubstituted C 6 to C 30 heteroaryl is selected from Or (b) Y 2 is selected from N (R 13 ), O or S, Y 1 、Z 1 -Z 3 is selected from CH or N independently, and Z 1 -Z 3 is not C at the same time, R 8 、R 13 is selected from alkyl of H, C 1 -C 4 and phenyl, R 8 is connected by a single bond or is condensed with Y 1 by sharing a pair of chemical bonds, R 9 、R 10 is selected from a group shown in a formula II or a formula III; The unsubstituted C 6 to C 30 arylamine group is selected from R 11 to R 12 are each independently selected from the group represented by formula II or formula III; * Is a junction site.
  6. 6. The organic fused ring compound according to claim 5, wherein the formula II is selected from 、 、 、 、 、 ; Formula three is selected from: 、 、 、 ; Formula four is selected from: 、 、 、 、 、 、 、 、 ; Said fifth is selected from 、 、 、 、 、 、 、 、 、 。
  7. 7. The organic fused ring compound of claim 1, wherein a is selected from cyclopentane or cyclohexane.
  8. 8. The organic fused ring compound of claim 7, wherein the organic fused ring compound is selected from the following structural formulas: 。
  9. 9. an organic electroluminescent device comprising a first electrode and a second electrode disposed opposite to each other, an organic layer being disposed between the first electrode and the second electrode, wherein the organic layer comprises the organic fused ring compound of any one of claims 1 to 8.
  10. 10. The organic electroluminescent device according to claim 9, wherein the organic layer comprises any one, two or more of a hole injection layer, a hole transport layer, an electron injection layer, an electron blocking layer, a hole blocking layer, a light emitting layer, and a light emitting auxiliary layer, and the organic layer containing the organic condensed ring compound is a light emitting layer, an electron transport layer, an electron blocking layer, a hole transport layer, or a hole blocking layer.

Description

Organic condensed ring compound and organic electroluminescent device prepared from same Technical Field The invention belongs to the technical field of materials, and particularly relates to an organic fused ring compound and an organic electroluminescent device prepared from the same. Background Compared with a liquid crystal display LCD which is a main stream of a flat panel display device, the organic electroluminescent device is self-luminous and can be driven under low voltage, has excellent visual angle and contrast, does not need a light and thin backlight, consumes less energy, has advantages in power aspect and wide color reproduction range, and becomes a main stream display scheme of medium and small-sized and high-end equipment. Materials for the organic material layer in the organic electroluminescent device may be classified into a light emitting material and a charge transporting material, such as a hole injecting material, a hole transporting material, an electron injecting material, and the like, according to functions. In addition, the light emitting material may be classified into a blue light material, a green light material, and a red light material according to the light emitting color. Meanwhile, if a single pure organic material is used as an active substance of the light-emitting layer, the light-emitting peak is easily shifted to the long wave direction due to aggregation effect (such as pi-pi stacking) among molecules of the material, and meanwhile, the light-emitting attenuation of the device is caused along with the increase of the non-radiative transition probability, so that the color purity degradation and the external quantum efficiency are finally caused. In order to solve the problem, the current mainstream technical scheme is to construct a light-emitting layer by adopting a main body/dopant blending system, namely, a main body material is used for providing a stable molecular environment and binding excitons, and the excitons are efficiently transferred to dopant molecules, so that the light-emitting red shift is obviously inhibited, the color purity is improved, and the light-emitting efficiency and the service life of a device are maximized. The realization of the excellent characteristics of the organic light-emitting device is highly dependent on the chemical stability and photoelectric efficiency of the organic functional layer material, the stable molecular structure is the core for guaranteeing the long service life of the device, and the high-efficiency carrier transmission/injection capability and the high fluorescence/phosphorescence quantum yield are the keys for realizing high brightness and high efficiency. However, organic functional layer materials with both high stability and high photoelectric properties still have a scarcity in the current industry. Accordingly, new materials for organic light emitting devices are required to be continuously developed. Disclosure of Invention In order to solve the defects in the prior art, the invention provides an organic fused ring compound and an organic electroluminescent device prepared from the same. The technical scheme provided by the invention is as follows: an organic fused ring compound having the structural formula shown in formula one: Wherein A is an aliphatic hydrocarbon ring of C 5 to C 6, R 1、R2 is independently selected from substituted or unsubstituted aryl of C 6 to C 12, R 1 and R 2 are independently each other, or R 1 and R 2 are bonded by a single bond to form a condensed ring structure; The substituted aryl of C 6 to C 12 is C 6 to C 12 wherein one or more H at any position on the aryl is substituted with R' which is M is selected from 0 or 1, ar 1 is selected from arylene of C 6 to C 12, R is selected from substituted or unsubstituted alkyl of C 1 to C 4, aryl of C 6 to C 30, arylamine of C 6 to C 30, heteroaryl of C 6 to C 30; The substituents in the substituted aryl groups of C 6 to C 30, the arylamine groups of C 6 to C 30 and the heteroaryl groups of C 6 to C 30 are one or more of deuterium, cyano, alkyl groups of C 1-C4 and phenyl groups. In particular, said a is selected from cyclopentane or cyclohexane. Specifically, the R 1、R2 is the same or different and is selected from substituted or unsubstituted monocyclic aryl, substituted or unsubstituted polycyclic aryl formed by single bond or condensed bond of 2 monocyclic aryl; Ar 1 is selected from monocyclic aryl, polycyclic aryl formed by 2 monocyclic aryl groups through a single bond or a fused bond. Specifically, the fused ring structure formed by bonding R 1 and R 2 through single bond has the following structural formula:、、、, Is the attachment site for R 1、R2 in formula one. Specifically, ar 1 is selected from phenylene, biphenylene or naphthylene. Specifically, the unsubstituted aryl group of C 6 to C 30 is selected fromR 3 to R 7 are each independently selected from H, C 1-C4 alkyl or phenyl, R 3 to R 7 are each independently bonded