Organic electroluminescent materials and devices

Patent metadata

Field	Value
Publication number	US-10236458-B2
Application number	US-201715479842-A
Country	US
Kind code	B2
Filing date	Apr 5, 2017
Priority date	Oct 24, 2016
Publication date	Mar 19, 2019
Grant date	Mar 19, 2019

Abstract

The present invention includes high triplet hosts with a macrocyclic structure that may provide high device quantum efficiency in OLEDs.

First claim

We claim:

1. A compound of Formula I:

wherein rings R A , R B , R C and R D are each independently an unsubstituted or substituted 5- or 6-membered monocyclic or polycyclic aromatic ring.

2. The compound of claim 1 , wherein at least one of rings R A , R B , R C and R D is a 6-membered aromatic ring.

3. The compound of claim 1 , wherein the compound of Formula I is selected from the group consisting of:

4. The compound of claim 1 , wherein at least one of rings R A , R B , R C and R D is a 5-membered aromatic ring.

5. The compound of claim 1 , wherein the compound of Formula I is selected from the group consisting of:

6. A compound of Formula II:

wherein rings R A , R B and R C are each independently an unsubstituted or substituted 5- or 6-membered monocyclic or polycyclic aromatic ring, and at least one of rings R A , R B and R C is a 5-membered aromatic ring.

7. The compound of claim 6 , wherein at least one of rings R A , R B and R C is a 6-membered aromatic ring.

8. The compound of claim 6 , wherein the compound of Formula II is selected from the group consisting of:

9. An organic light-emitting device (OLED) comprising:
an anode;
a cathode; and
an organic layer disposed between the anode and the cathode, the organic layer comprising a compound of Formula I or Formula II:

wherein rings R A , R B , R C and R D are each independently an unsubstituted or substituted 5- or 6-membered aromatic, heteroaromatic or polycyclic ring, and for the compounds of Formula II at least one of rings R A , R B and R C is a 5-membered aromatic ring.

10. The OLED of claim 9 , wherein the organic layer is an emissive layer and the compound of Formula I or Formula II is a host.

11. The OLED of claim 9 , wherein the organic layer is an emissive layer and the compound of Formula I or Formula II is an emitter.

12. The OLED of claim 9 , wherein the organic layer further comprises a phosphorescent emissive dopant; wherein the emissive dopant is a transition metal complex having at least one ligand or part of the ligand if the ligand is more than bidentate selected from the group consisting of:

wherein each X 1 to X 13 are independently selected from the group consisting of carbon and nitrogen;
wherein X is selected from the group consisting of BR′, NR′, PR′, O, S, Se, C═O, S═O, SO 2 , CR′R″, SiR′R″, and GeR′R″;
wherein R′ and R″ are optionally fused or joined to form a ring;
wherein each R a , R b , R c , and R d may represent from mono substitution to the possible maximum number of substitution, or no substitution;
wherein R′, R″, R a , R b , R c , and R d are each independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and
wherein any two adjacent substituents of R a , R b , R c , and R d are optionally fused or joined to form a ring or form a multidentate ligand.

13. The OLED of claim 9 , wherein the organic layer is a blocking layer and the compound of Formula I or Formula II is a blocking material in the organic layer.

14. The OLED of claim 9 , wherein the organic layer is a transporting layer and the compound of Formula I or Formula II is a transporting material in the organic layer.

15. The OLED of claim 9 , wherein the OLED is incorporated into a device selected from the group consisting of a consumer product, an electronic component module, and a lighting panel.

Assignees

• Universal Display Corp

Inventors

• Kwong Raymond
• Lam Siu Tung
• Lee Chi Hang

Classifications

• H01L51/5206

  Electricity · mapped topic

• H01L51/5096

  Electricity · mapped topic

• H01L51/5056

  Electricity · mapped topic

• H01L51/5072

  Electricity · mapped topic

• H01L51/008

  Electricity · mapped topic