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,
• wherein the organic layer comprises a A compound comprising a first ligand LA;
• wherein LA comprises a structure R of Formula I:
• wherein moieties A and B are each independently a monocyclic ring or a polycyclic fused ring structure,
• wherein the monocyclic ring or each ring of the polycyclic fused ring structure is independently a 5-membered to 10-membered carbocyclic or heterocyclic ring;
• wherein Y1 and Y2 are each independently selected from the group consisting of O, S, Se, NR, BR, BRR′, PRe, CR, C═O, C═NR, C═CRR′, C═S, CRR′, SO, SO2, P(O)R, SiRR′, and GeRR′;
• wherein each of RA and RB independently represents mono to the maximum allowable substitution, or no substitution;
• wherein LA is coordinated to a metal M;
• wherein moiety A and moiety B are not both joined to M by direct bonds;
• wherein M is selected from the group consisting of Ir, Rh, Re, Ru, Os, Pt, Pd, Ag, Au, and Cu;
• wherein M may be coordinated to other ligands;
• wherein LA may be joined with other ligands to comprise a tridentate, tetradentate, pentadentate, or hexadentate ligand;
• wherein any two substituents may be joined or fused to form a ring;
• with the proviso that if moiety A is a pyridine ring joined to Ir by an Ir—N bond, then Y1 is not CF2 and Y2 is not CRR′;
• and
• with the proviso that if moiety A is a benzene ring joined to Ir by a direct bond, then Y1 is not O and Y2 is not CRR′;
• wherein each R, R′, RA and RB is independently hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, boryl, arylalkyl, alkoxy, aryloxy, amino, silyl, germyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, selenyl, and combinations thereof.

A consumer product comprising an organic light-emitting device (OLED) comprising:

• an anode;
• a cathode;
• and
• an organic layer disposed between the anode and the cathode,
• wherein the organic layer comprises a compound comprising a first ligand LA;
• wherein LA comprises a structure R of Formula I:
• wherein moieties A and B are each independently a monocyclic ring or a polycyclic fused ring structure,
• wherein the monocyclic ring or each ring of the polycyclic fused ring structure is independently a 5-membered to 10-membered carbocyclic or heterocyclic ring;
• wherein Y1 and Y2 are each independently selected from the group consisting of O, S, Se, NR, BR, BRR′, PRe, CR, C═O, C═NR, C═CRR′, C═S, CRR′, SO, SO2, P(O)R, SiRR′, and GeRR′;
• wherein each of RA and RB independently represents mono to the maximum allowable substitution, or no substitution;
• wherein LA is coordinated to a metal M;
• wherein moiety A and moiety B are not both joined to M by direct bonds;
• wherein M is selected from the group consisting of Ir, Rh, Re, Ru, Os, Pt, Pd, Ag, Au, and Cu;
• wherein M may be coordinated to other ligands;
• wherein LA may be joined with other ligands to comprise a tridentate, tetradentate, pentadentate, or hexadentate ligand;
• wherein any two substituents may be joined or fused to form a ring;
• with the proviso that if moiety A is a pyridine ring joined to Ir by an Ir—N bond, then Y1 is not CF2 and Y2 is not CRR′;
• and
• with the proviso that if moiety A is a benzene ring joined to Ir by a direct bond, then Y′ is not O and Y2 is not CRR′;
• wherein each R, R′, RA and RB is independently hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, boryl, arylalkyl, alkoxy, aryloxy, amino, silyl, germyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, selenyl, and combinations thereof.