Patent number: 9978958
Abstract: Phosphorescent materials are provided, where the materials comprise a coordination compound having at least one ligand L3 having Formula (I): wherein A and B are each independently a 5-membered or 6-membered carbocyclic or heterocyclic ring; wherein RA, RB, RC, and RD each represent mono, di, tri, tetra substitutions, or no substitution; wherein Z1, Z2, Z3, Z4, Z5, Z6, Z7, and Z8 are each selected from N or C; wherein at least one of Z1, Z2, Z3, Z4, Z5, Z6, Z7, and Z8 is N; wherein one of Z1, Z2, Z3, and Z4 is C that is bonded to N of A; wherein Z is selected from the group consisting of BR, NR, PR, O, S, Se, C?O, S?O, SO2, CRR?, SiRR?, and GeRR?; wherein R, R?, RA, RB, RC, and RD are described herein; wherein L3 is coordinated to a metal M1; and wherein L3 may be linked with other ligands to comprise a tridentate, tetradentate, pentadentate, or hexadentate ligand. Devices, such as organic light emitting devices, comprising such compounds are also provided.
Type:
Grant
Filed:
March 13, 2013
Date of Patent:
May 22, 2018
Assignee:
UNIVERSAL DISPLAY CORPORATION
Inventors:
Chuanjun Xia, Chun Lin, Gregg Kottas, Zeinab Elshenawy
Patent number: 9871214
Abstract: A compound having a Pt tetradentate structure of Formula I, is disclosed. In Formula I, rings A, B, and C each independently represent a 5- or 6-membered carbocyclic or heterocyclic ring; L1, L2, and L3 are each independently selected from the group consisting of a direct bond, BR, NR, PR, O, S, Se, C?O, S?O, SO2, SiRR?, GeRR?, alkyl, cycloalkyl, aryl, heteroaryl, and combinations thereof; X1, X2, and X3 are either carbon or nitrogen; X is O, S, or Se; R1, R2, R3, RA, RB, RC, R, and R? are each independently selected from H and a variety of substituents; and any adjacent R1, R2, R3, RA, RB, RC, R, and R? are optionally joined to form a ring. Formulations and devices, such as OLEDs, that include the compound of Formula I are also described.
Type:
Grant
Filed:
March 23, 2015
Date of Patent:
January 16, 2018
Assignee:
UNIVERSAL DISPLAY CORPORATION
Inventors:
Gregg Kottas, Zeinab Elshenawy, Geza Szigethy, Chuanjun Xia