Organometallic compound, ortganic light-emitting device including the same, and diagnostic composition including the organometallic compound

An organometallic compound represented by Formula 1:

• Formula 1
• wherein, in Formula 1,
• R1 to R3, R5 to R12 and R16 are each independently selected from hydrogen, 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 group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group 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, a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, —N(Q1)(Q2), —Si(Q3)(Q4)(Q5), —Ge(Q3)(Q4)(Q5), —B(Q6)(Q7), —P(═O)(Q8)(Q9), and —P(Q8)(Q9),
• R4 is selected from a group represented by Formula 2,
• wherein, the number of carbon atoms included in Formula 2 is 4 or more,
• R13 in Formula 2 is hydrogen, deuterium, a C1-C20 alkyl group, a deuterium-containing C1-C20 alkyl group, a C3-C10 cycloalkyl group, or a deuterium-containing C3-C10 cycloalkyl group,
• R14 and R15 in Formula 2 are each independently a C1-C20 alkyl group, deuterium-containing C1-C20 alkyl group, a C3-C10 cycloalkyl group, or a deuterium-containing C3-C10 cycloalkyl group,
• * indicates a binding site to a neighboring atom,
• provided that,
• i) at least one selected from R1, R2, R3, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15 and R16 in Formulae 1 and 2 is each independently a C3-C10 cycloalkyl group or a deuterium-containing C3-C10 cycloalkyl group,
• ii) R10 in Formula 1 is independently a group represented by Formula 3:
• wherein, in Formula 3, to R18 are each independently selected from:
• deuterium, a C1-C20 alkyl group, a C3-C10 cycloalkyl group, a C6-C60 aryl group, and a C1-C60 heteroaryl group;
• and
• a C1-C20 alkyl group, a C3-C10 cycloalkyl group, a C6-C60 aryl group, and a C1-C60 heteroaryl group, each substituted with at least one selected from deuterium and a C1-C20 alkyl group, and
• * indicates a binding site to a neighboring atom,
• iii) Rn in Formula 2 is a C1-C20 alkyl group, a deuterium-containing C1-C20 alkyl group, a C3-C10 cycloalkyl group, or a deuterium-containing C3-C10 cycloalkyl group, or
• iv) R7 and R9 are not hydrogen, and R7 and R9 are different from each other,
• at least one substituent 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 arylthio group, the substituted C1-C60 heteroaryl group, the substituted monovalent non-aromatic condensed polycyclic group, and the substituted monovalent non-aromatic condensed heteropolycyclic group is selected from:
• 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 group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group 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 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 group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, 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, a monovalent non-aromatic condensed heteropolycyclic group, —N(Q11)(Q12), —Si(Q13)(Q14)(Q15), —Ge(Q13)(Q14)(Q15), —B(Q16)(Q17), —P(═O)(Q18)(Q19), and —P(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, and a monovalent non-aromatic condensed heteropolycyclic 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, and a monovalent non-aromatic condensed heteropolycyclic group, each substituted with at least one selected from 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 group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group 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 aryloxy group, a C6-C60 arylthio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, —N(Q21)(Q22), —Si(Q23)(Q24)(Q25), —Ge(Q23)(Q24)(Q25), —B(Q26)(Q27), —P(═O)(Q28)(Q29), and —P(Q28)(Q29);
• and
• —N(Q31)(Q32), —Si(Q33)(Q34)(Q35), —Ge(Q33)(Q34)(Q35), —B(Q36)(Q37), —P(═O)(Q38)(Q39), and —P(Q38)(Q39), and
• Q1 to Q9, Q11 to Q19, Q21 to Q29, and Q31 to Q39 are each independently selected from hydrogen, 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 group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group 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, and a monovalent non-aromatic condensed heteropolycyclic group.