Organic electroluminescent materials and devices

An organic light emitting device (OLED) comprising:

• an anode;
• a cathode;
• and
• an organic layer, disposed between the anode and the cathode, comprising a compound selected from the group consisting of:
• a structure having Formula I
• and a structure having Formula II
• wherein rings A and B are each independently a 5- or 6-membered carbocyclic or heterocyclic ring;
• wherein M is Pt or Pd;
• wherein T1 and T2 are C;
• wherein X1-X5, Z1, and Z2 are each independently selected from the group consisting of carbon and nitrogen;
• wherein RA, RB, RC, and RD represent mono to a maximum possible number of substitutions, or no substitution;
• wherein Y1 is selected from the group consisting of CRR′, NR, O, and S;
• wherein Y2 and Y3 are each selected from the group consisting of CRR′, SiRR′, BR, NR, O, and S;
• wherein if one of Y2 and Y3 is O, S, or NR, the other is not O, S, or NR;
• wherein L1 and L2 are each independently selected from the group consisting of a direct bond, BR, NR, PR, O, S, Se, C═O, S═O, SO2, CRR′, SiRR′, GeRR′, alkyl, cycloalkyl, and combinations thereof;
• wherein R1, R2, R, and R′ are each 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;
• wherein RA, RB, Rc, and RD are each 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;
• wherein n1 is 1;
• n2 is 0 or 1, wherein when n2 is 0, L2 is not present and
• wherein any two substituents may be joined or fused together to form a ring.

A consumer product comprising an organic light-emitting device comprising:

• an anode;
• a cathode;
• and
• an organic layer, disposed between the anode and the cathode, comprising a compound selected from the group consisting of:
• a structure having Formula I
• and a structure having Formula II
• wherein rings A and B are each independently a 5- or 6-membered carbocyclic or heterocyclic ring;
• wherein M is Pt or Pd;
• wherein T1 and T2 are C;
• wherein X1-X5, Z1, and Z2 are each independently selected from the group consisting of carbon and nitrogen;
• wherein RA, RB, RC, and RD represent mono to a maximum possible number of substitutions, or no substitution;
• wherein Y1 is selected from the group consisting of CRR′, NR, O, and S;
• wherein Y2 and Y3 are each selected from the group consisting of CRR′, SiRR′, BR, NR, O, and S;
• wherein if one of Y2 and Y3 is O, S, or NR, the other is not O, S, or NR;
• wherein L1 and L2 are each independently selected from the group consisting of a direct bond, BR, NR, PR, O, S, Se, C═O, S═O, SO2, CRR′, SiRR′, GeRR′, alkyl, cycloalkyl, and combinations thereof;
• wherein R1, R2, R, and R′ are each 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;
• wherein RA, RB, RC, and RD are each 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;
• wherein n1 is 1;
• n2 is 0 or 1, wherein when n2 is 0, L2 is not present;
• and
• wherein any two substituents may be joined or fused together to form a ring;
• wherein the consumer product is one of a flat panel display, a computer monitor, a medical monitors television, a billboard, a light for interior or exterior illumination and/or signaling, a heads-up display, a fully or partially transparent display, a flexible display, a laser printer, a telephone, a cell phone, tablet, a phablet, a personal digital assistant (PDA), a wearable device, a laptop computer, a digital camera, a camcorder, a viewfinder, a micro-display, a 3-D display, a virtual reality or augmented reality display, a vehicle, a video wall comprising multiple displays tied together, a theater or stadium screen, a light therapy device, and a sign.