Host materials for electroluminescent 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 having Formula I
• wherein each R1 and R2 represents mono, di, tri, tetra substitutions or no substitution;
• wherein each L1 and L2 is independently selected from the group consisting of direct bond, aryl, substituted aryl, heteroaryl, and substituted heteroaryl;
• wherein each R1 and R2 is independently 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 each G1 and G2 is independently selected from the group consisting of hydrogen, 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 any two adjacent substituents are optionally joined or fused into a ring;
• wherein at least one of R1 and R2 that is ortho to a boron atom of Formula I comprises a structure selected from the group consisting of (9-carbazolyl)-carbazole, indolocarbazole, triphenylene, fluorene, dibenzothiophene, dibenzofuran, dibenzoselenophene, pyridine, pyrimidine, triazine, aza-triphenylene, aza-fluorene, aza-carbazole, aza-dibenzothiophene, aza-dibenzofuran, and aza-dibenzoselenophene.

A consumer product comprising a first device comprising a first organic light emitting device comprising:

• an anode;
• a cathode;
• and
• an organic layer, disposed between the anode and the cathode, comprising a compound having Formula I
• wherein each R1 and R2 represents mono, di, tri, tetra substitutions or no substitution;
• wherein each L1 and L2 is independently selected from the group consisting of direct bond, aryl, substituted aryl, heteroaryl, and substituted heteroaryl;
• wherein each R1 and R2 is independently 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 each G1 and G2 is independently selected from the group consisting of hydrogen, 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 any two adjacent substituents are optionally joined or fused into a ring;
• and
• wherein at least one of R1 and R2 that is ortho to a boron atom of Formula I comprises a structure selected from the group consisting of (9-carbazolyl)-carbazole, indolocarbazole, triphenylene, fluorene, dibenzothiophene, dibenzofuran, dibenzoselenophene, pyridine, pyrimidine, triazine, aza-triphenylene, aza-fluorene, aza-carbazole, aza-dibenzothiophene, aza-dibenzofuran, and aza-dibenzoselenophene.