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1. An organometallic compound represented by Formula 1:
M(L1)n1(L2)n2, Formula 1 wherein M is iridium (Ir), or platinum (Pt), wherein L1 is a ligand selected from substituted and unsubstituted phenylpyridine that coordinates to M via a carbon atom of the phenyl ring and the nitrogen atom of the pyridine ring and L2 is a ligand represented by Formula 2B, and wherein L1 and L2 in Formula 1 are different from each other, wherein
CY3 is a benzene,R1 to R3 in Formula 2B are each independently selected from:
a C1-C10 alkyl group; anda C1-C10 alkyl group, which is substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, —CD3, —CD2H, —CDH2, —CF3, —CF2H, —CFH2, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, and a C1-C10 alkyl group,any substituent on L1, and R11 to R14 in Formulas 2B are each independently selected from a hydrogen, a deuterium, —F, —Cl, —Br, —I, —SF5, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a substituted or unsubstituted C1-C60 alkyl group, a substituted or unsubstituted C2-C60 alkenyl group, a substituted or unsubstituted C2-C60 alkynyl group, a substituted or unsubstituted C1-C60 alkoxy group, a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C1-C10 heterocycloalkyl group, a substituted or unsubstituted C3-C10 cycloalkenyl group, a substituted or unsubstituted C1-C10 heterocycloalkenyl group, a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C6-C60 aryloxy group, a substituted or unsubstituted C6-C60 arylthio group, a substituted or unsubstituted C1-C60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group having 8 to 60 carbon atoms, a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group having 1 to 60 carbon atoms, —N(Q1)(Q2), —Si(Q3)(Q4)(Q5), —B(Q6)(Q7), and —P(═O)(Q8)(Q9), wherein R12 in Formula 2B is not a hydrogen, a —CH3, or a cyano group; and i) two substituents on the pyridine ring of the L1, together with the pyridine ring, optionally form a 5,6,7,8-tetrahydroisoquinoline and ii) two substituents on the phenyl ring of the L1, together with the phenyl ring, optionally form a dibenzofuran, a dibenzothiophene or a carbazole,at least one of R11 to R14 in Formulas 2B are each independently selected from a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C1-C10 heterocycloalkyl group, a substituted or unsubstituted C3-C10 cycloalkenyl group, a substituted or unsubstituted C1-C10 heterocycloalkenyl group, a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C6-C60 aryloxy group, a substituted or unsubstituted C6-C60 arylthio group, a substituted or unsubstituted C1-C60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group having 8 to 60 carbon atoms, and a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group having 1 to 60 carbon atoms, andb1 in Formula 2B is selected from 1, 2, 3, and 4, and wherein in Formula 1, n1 and n2 are each independently 1 or 2, with the proviso that a sum of n1 and n2 is 2 when M is Pt, or 3 when M is Ir, wherein * and *′ in Formula 2B are each a binding site to M in Formula 1; and wherein at least one of substituents of the substituted C1-C60 alkyl group, the substituted C2-C60 alkenyl group, the substituted C2-C60 alkynyl group, the substituted C1-C60 alkoxy group, the substituted C3-C10 cycloalkyl group, the substituted C1-C10 heterocycloalkyl group, the substituted C3-C10 cycloalkenyl group, the substituted C1-C10 heterocycloalkenyl group, the substituted C6-C60 aryl group, the substituted C6-C60 aryloxy group, the substituted C6-C60 arythio group, the substituted C1-C60 heteroaryl group, the substituted a monovalent non-aromatic condensed polycyclic group having 8 to 60 carbon atoms, and the substituted monovalent non-aromatic condensed heteropolycyclic group having 1 to 60 carbon atoms is selected from:
a deuterium, —F, —Cl, —Br, —I, —CD3, —CD2H, —CDH2, —CF3, —CF2H, —CFH2, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, and a C1-C60 alkoxy group;a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, and a C1-C60 alkoxy group, each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, —CD3, —CD2H, —CDH2, —CF3, —CF2H, —CFH2, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a C3-C10 cycloalkyl group, a C1-C10 heterocycloalkyl group, a C1-C10 cycloalkenyl group, a C2-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C2-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group having 8 to 60 carbon atoms, a monovalent non-aromatic condensed heteropolycyclic group having 1 to 60 carbon atoms, —N(Q11)(Q12), —Si(Q13)(Q14)(Q15), —B(Q16)(Q17), and —P(═O)(Q18)(Q19);a C3-C10 cycloalkyl group, a C1-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C1-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group having 8 to 60 carbon atoms, and a monovalent non-aromatic condensed heteropolycyclic group having 1 to 60 carbon atoms;a C3-C10 cycloalkyl group, a C1-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C1-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group having 8 to 60 carbon atoms, and a monovalent non-aromatic condensed heteropolycyclic group having 1 to 60 carbon atoms, each substituted with at least one selected from a deuterium, —F, —Cl, —Br, —I, —CD3, —CD2H, —CDH2, —CF3, —CF2H, —CFH2, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a C1-C60 alkyl group, a C1-C60 alkenyl group, a C1-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C1-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C1-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group having 8 to 60 carbon atoms, a monovalent non-aromatic condensed heteropolycyclic group having 1 to 60 carbon atoms, —N(Q21)(Q22), —Si(Q23)(Q24)(Q25), —B(Q26)(Q27), and —P(═O)(Q28)(Q29); and—N(Q31)(Q32), —Si(Q33)(Q34)(Q35), —B(Q36)(Q37), and —P(═O)(Q38)(Q39); wherein Q1 to Q9, Q11 to Q19, Q21 to Q29, and Q31 to Q39 are each independently selected from a hydrogen, a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C1-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C1-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryl group substituted with at least one selected from a C1-C60 alkyl group and a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group having 8 to 60 carbon atoms and a monovalent non-aromatic condensed heteropolycyclic group having 1 to 60 carbon atoms. |
