USE OF TRANSITION METAL CARBENE COMPLEXES IN ORGANIC LIGHT-EMITTING DIODES (OLEDS)

• US 20200136064A1
• Filed: 12/30/2019
• Published: 04/30/2020
• Est. Priority Date: 11/25/2004
• Status: Active Grant

• Current Assignee: UDC Ireland Limited (Universal Display Corporation)
• Original Assignee: UDC Ireland Limited (Universal Display Corporation)
• Inventors: Egen, Martina, Kahle, Klaus, Bold, Markus, Gessner, Thomas, Lennartz, Christian, Nord, Simon, Schmidt, Hans-Werner, Thelakkat, Mukundan, Baete, Markus, Neuber, Christian, Kowalsky, Wolfgang, Schildknecht, Christian, Johannes, Hans-Hermann
• Granted Patent: US 11,980,086 B2
• Time in Patent Office: Days
• CPC Class Codes: C07F 15/00 Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
• CPC Class Codes: C07F 15/0033 Iridium compounds
• CPC Class Codes: C07F 15/0086 Platinum compounds
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1044 containing two nitrogen atoms as heteroatoms
• CPC Class Codes: C09K 2211/185 of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
• CPC Class Codes: H05B 33/14 characterised by the chemical or physical composition or the arrangement of the electroluminescent material , or by the simultaneous addition of the electroluminescent material in or onto the light source
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/14 Carrier transporting layers
• CPC Class Codes: H10K 50/15 Hole transporting layers
• CPC Class Codes: H10K 50/18 Carrier blocking layers
• CPC Class Codes: H10K 50/181 Electron blocking layers
• CPC Class Codes: H10K 85/342 comprising iridium

Abstract

The present invention relates to the use of transition metal-carbene complexes in organic light-emitting diodes (OLEDs), to a light-emitting layer, to a blocking layer for electrons or excitons, or to a blocking layer for holes, each comprising these transition metal-carbene complexes, to OLEDs comprising these transition metal-carbene complexes, to devices which comprise an inventive OLED, and to transition metal-carbene complexes.

Claims

1. The use of uncharged transition metal-carbene complexes of the general formula I

2. The use of complexes of the formula I according to claim 1, wherein

M is selected from the group consisting of Rh, Ir, Pd, Pt, Ru and Os in any oxidation state possible for the particular metal atom;

and the remaining variables are each as defined in claim 1.

3. The use of complexes of the formula I according to claim 1 or 2, wherein

n is at least 2 and the carbene ligands may be the same or different;

m is 0 or ≥

1 and the ligands L, when m>

1, may be the same or different;

q is 0 or ≥

1 and the ligands K, when q>

1, may be the same or different;

where the variables other than n, m and q are each as defined in claim 1 or 2.

4. The use of complexes of the formula I according to claim 1 or 2, wherein

n is at least 2 and the carbene ligands may be the same or different;

m, q are each 0;

where the variables other than n, m and q are each as defined in claim 1 or 2.

5. The use of complexes of the formula I according to claim 1 or 2, wherein

n is at least 2 and the carbene ligands are the same;

m, q are each 0;

where the variables other than n, m and q are each as defined in claim 1 or 2.

6. An uncharged transition metal-carbene complex of the general formula I according to one or more of claims 1 to 5.

7. A process for preparing transition metal-carbene complexes of the formula t according to one or more of claims 1 to 5 by deprotonating the ligand precursors corresponding to the particular carbene ligands and subsequently or simultaneously reacting with suitable metal complexes comprising the desired metal.

8. An OLED comprising at least one transition metal-carbene complex of the formula I according to one or more of claims 1 to 5.

9. A light-emitting layer comprising at least one transition metal-carbene complex of the formula I according to one or more of claims 1 to 5.

10. An OLED comprising a light-emitting layer according to claim 9.

11. A device selected from the group consisting of stationary visual display units such as visual display units of computers, televisions, visual display units in printers, kitchen appliances and advertising panels, illuminations, information panels and mobile visual display units such as visual display units in mobile telephones, laptops, vehicles and destination displays in buses and trains, comprising an OLED according to claim 8 or 10.

12. The use of uncharged transition metal-carbene complexes of the formula I according to one or more of claims 1 to 5 for the bulk coloration of polymeric materials.