US 11,903,305 B2
Organic electroluminescent materials and devices
Pierre-Luc T. Boudreault, Pennington, NJ (US); Bin Ma, Plainsboro, NJ (US); Zhiqiang Ji, Chalfont, PA (US); and Alan Deangelis, Pennington, NJ (US)
Assigned to UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US)
Filed by Universal Display Corporation, Ewing, NJ (US)
Filed on Sep. 7, 2019, as Appl. No. 16/563,838.
Claims priority of provisional application 62/735,466, filed on Sep. 24, 2018.
Prior Publication US 2020/0098999 A1, Mar. 26, 2020
Int. Cl. C07F 15/00 (2006.01); C09K 11/06 (2006.01); H10K 101/10 (2023.01); H10K 50/11 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01)
CPC H10K 85/342 (2023.02) [C07F 15/0033 (2013.01); C09K 11/06 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/185 (2013.01); H10K 50/11 (2023.02); H10K 2101/10 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A compound of formula Ir(LA)m(LB)n;

OG Complex Work Unit Chemistry
wherein LA has

OG Complex Work Unit Chemistry
and LB has
wherein,
m and n are each 1 or 2;
m+n=3;
X1 to X10 are each independently C or N;
the maximum number of N atoms that can connect to each other in each ring is two;
R1 and R2 represent mono to the maximum allowable number of substituents, or no substituent;
each of R1 , R2, and R3 is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof;
at least one of R1 and R2 is a substituent selected from the group consisting of halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof, R4 and R5 are each selected from the group consisting of alkyl, cycloalkyl, heteroalkyl, cycloheteroalkyl, and combinations thereof;
at least one of R4 and R5 comprises five or more carbon atoms; and
at least one of X1 to X10 is N.