US 12,391,876 B2
Organic electroluminescent materials and devices
Zhiqiang Ji, Ewing, NJ (US); Lichang Zeng, Ewing, NJ (US); and Chun Lin, Ewing, NJ (US)
Assigned to Universal Display Corporation
Filed by Universal Display Corporation, Ewing, NJ (US)
Filed on May 28, 2024, as Appl. No. 18/675,910.
Application 18/675,910 is a continuation of application No. 17/382,486, filed on Jul. 22, 2021, abandoned.
Application 17/382,486 is a continuation of application No. 15/828,678, filed on Dec. 1, 2017, abandoned.
Claims priority of provisional application 62/441,653, filed on Jan. 3, 2017.
Prior Publication US 2024/0324445 A1, Sep. 26, 2024
Int. Cl. C09K 11/06 (2006.01); C07F 15/00 (2006.01); H10K 50/11 (2023.01); H10K 50/81 (2023.01); H10K 85/30 (2023.01); H10K 101/10 (2023.01); H10K 101/20 (2023.01)
CPC C09K 11/06 (2013.01) [C07F 15/0086 (2013.01); H10K 85/346 (2023.02); C09K 2211/1029 (2013.01); C09K 2211/185 (2013.01); H10K 50/11 (2023.02); H10K 50/81 (2023.02); H10K 2101/10 (2023.02); H10K 2101/20 (2023.02)] 12 Claims
OG exemplary drawing
 
1. A compound having the formula Pt(L)n;
wherein Pt is Pt(IV) metal, L is a ligand coordinating to Pt, and n is 2;
wherein each L is tridentate and wherein each L can be the same or different;
wherein the Pt has an octahedral coordinating geometry, and
wherein the compound is neutral;
wherein each L is independently selected from the group consisting of:

OG Complex Work Unit Chemistry
wherein X is a neutral coordinating atom selected from the group consisting of carbene carbon, phosphorus, and nitrogen, and each X can be the same or different; and
wherein Y is an anionic coordinating atom selected from the group consisting of carbon, nitrogen, and oxygen atom, and each Y can be the same or different;
provided that at least one Y is an oxygen atom.