Blue and narrow band green and red emitting metal complexes

Patent metadata

Field	Value
Publication number	US-12037348-B2
Application number	US-201916291395-A
Country	US
Kind code	B2
Filing date	Mar 4, 2019
Priority date	Mar 9, 2018
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

The present invention includes tetradentate platinum (II) complexes for narrow band green and red phosphorescent emitters. The present invention also includes blue emitting metal complexes with six-membered chelate rings based on fused carbazole. The present invention also includes organic light emitting diodes (OLEDS) including these complexes, and devices including these OLEDS.

First claim

What is claimed is:

1. A complex represented by one of General Formulas I and II:

wherein:
as depicted, each complex has an axis of symmetry through M and X;
M is Pt 2+ ;
R 1 , R 2 , R 3 , and R 4 , if present each independently represents hydrogen, deuterium, trideuteriummethyl, pentadeuteriumphenyl, halogen, hydroxy, nitro, nitrile, thiol; or substituted or unsubstituted amino, alkoxy, aryl, or C 1 -C 4 alkyl;
each n independently represents an integer, valency permitting;
Y 1a , Y 1b , Y 1c , Y 1d , Y 1e , Y 1f , Y 2a , Y 2b , Y 2c , Y 2d , Y 2e , Y 2f , Y 3a , Y 3b , Y 3c , Y 3d , Y 3e , Y 3f , Y 4a , Y 4b , Y 4c , Y 4d , Y 4e , and Y 4f each independently represents C, N, Si, O, or S; and
each X and X 2 independently represents a single bond, NR, PR, CRR′, SiRR′, O, S, S═O, O═S=O, Se, Se═O, or O═Se=O;
each X 1 represents N, P, CR, SiR, S═O, Se, or Se═O; and
R and R′ each independently represents hydrogen, deuterium, trideuteriummethyl, pentadeuteriumphenyl, nitrile, halogen, hydroxy, nitro, thiol; or substituted or unsubstituted alkoxy, aryl, amino, or C 1 -C 4 alkyl.

2. The complex of claim 1 , wherein Ar 1 , Ar 2 , Ar 3 , and Ar 4 independently represent aryl or heteroaryl groups.

3. A complex represented by one of the following structures:

wherein each R 1 and R 2 independently represents hydrogen, deuterium, trideuteriummethyl, pentadeuteriumphenyl, nitrile, halogen, hydroxy, nitro, thiol, or substituted or unsubstituted alkoxy, aryl, amino, or C 1 -C 4 alkyl.

4. An organic light-emitting diode comprising the complex of claim 1 .

5. A light-emitting device comprising the organic light-emitting diode of claim 4 .

6. The complex of claim 1 , wherein X 2 is S.

7. The complex of claim 1 , wherein the compound is represented by General Formula I.

8. The complex of claim 1 , wherein X represents NR, PR, CRR′, SiRR′, S, S═O, O═S=O, Se, Se═O, or O═Se=O.

9. The complex of claim 1 , wherein the compound is represented by General Formula II.

Assignees

• Univ Arizona State

Inventors

• Li Jian
• Zhu zhi-qiang

Classifications

• H10K50/12

  comprising dopants · CPC title

• H10K2101/10

  Triplet emission · CPC title

• H10K50/11

  characterised by the electroluminescent [EL] layers · CPC title

• H10K85/346

  comprising platinum · CPC title

• C09K2211/185

  of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd · CPC title