Organic electroluminescent materials and devices

Patent metadata

Field	Value
Publication number	US-11038137-B2
Application number	US-201815943857-A
Country	US
Kind code	B2
Filing date	Apr 3, 2018
Priority date	Apr 28, 2017
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

The present invention relates to compounds containing fused dibenzo more-than-six-membered heterocycles or azaheterocycles. These compounds may be useful as host materials for phosphorescent electroluminescent devices.

First claim

We claim:

1. A compound of Formula I:

wherein A 1 -A 8 are each independently selected from the group consisting of C and N;
wherein Y and Z are each independently selected from the group consisting of O, S, Se, BR, NR, CRR′, and SiRR′;
wherein m is 1, 2, 3, or 4;
wherein n is 1, 2, 3, or 4;
wherein at least one of m and n is 2;
wherein if m is 2, 3, or 4, each Y may be the same or different;
wherein if n is 2, 3, or 4, each Z may be the same or different;
wherein R A and R B represent mono to the maximum allowable number of substitutions, or no substitution;
wherein R A , R B , R, and R′ 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 at least one of R A , R B , R, and R′ comprises a structure selected from the group consisting of:

2. The compound of claim 1 , wherein each R A , R B , R, and R′ is independently selected from the group consisting of hydrogen, deuterium, fluorine, alkyl, cycloalkyl, heteroalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, aryl, heteroaryl, nitrile, isonitrile, and combinations thereof.

3. The compound of claim 1 , wherein if m is 2, at least one Y is CRR′ or SiRR′.

4. The compound of claim 1 , wherein if n is 2, at least one Z is CRR′ or SiRR′.

5. The compound of claim 1 , wherein each of A 1 -A 8 is C.

6. The compound of claim 1 , wherein at least one of A 1 -A 8 is N.

7. The compound of claim 1 , wherein the compound is selected from the group consisting of:

Assignees

• Universal Display Corp

Inventors

• Wolohan Peter
• Drennan Diana
• Fitzgerald George

Classifications

• C07D313/14 Primary

  [b,f]-condensed · CPC title

• H10K50/121

  for assisting energy transfer, e.g. sensitization · CPC title

• C07D245/04

  condensed with carbocyclic rings or ring systems · CPC title

• C07D407/10

  linked by a carbon chain containing aromatic rings · CPC title

• C07D321/12

  Eight-membered rings · CPC title