Abstract: An organometallic compound represented by Formula 1: wherein M1 is a transition metal; Y1 to Y3 are each independently C or N; R4 is a substituted or unsubstituted C1-C60 alkyl group; ring CY2 to ring CY5 are each independently a C5-C60 carbocyclic group or a C1-C60 heterocyclic group; L1 is a single bond, O, S, Se, N(R61), B(R61), C(R61)(R62), or Si(R61)(R62); a1 is 1, 2, 3, 4, or 5; b10, b20, b30, b40, and b50 are each independently 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10; and the remaining substituent groups of Formula 1 are as provided herein.

Abstract: Provided are an organometallic compound represented by Formula 1, an organic light-emitting device including the organometallic compound and an electronic apparatus including the organic light-emitting device: Formula 1 may be understood by referring to the descriptions of Formula 1 provided herein.

Abstract: Provided are the organometallic compound represented by Formula 1 and an organic light-emitting device including the same: M, X1 to X4, X11, ring CY2 to ring CY4, T1, T2, R1 to R4, and a1 to a4 in Formula 1 are the same as described in the present specification.

Abstract: Provided is an organic light-emitting device including an emission layer that includes a host, a sensitizer, and an emitter.

Abstract: An organometallic compound represented by Formula 1: wherein, M1 is a transition metal; X11 is N or C(R11); X12 is N or C(R12); X21 is N or C(R21); X22 is N or C(R22); X23 is N or C(R23); at least one of X21 and X22 is N; Y2 to Y4 are each independently C or N; A2 to A4 are each independently a chemical bond, O, or S; ring CY3 and ring CY4 are each independently a C5-C30 carbocyclic group or a C1-C30 heterocyclic group; a1, a2, and a3 are each independently an integer from 1 to 3; R13 is a group represented by Formula 2, and the remaining substituents are as defined herein.

Abstract: An organometallic compound represented by Formula 1-1 or 1-2: wherein, in Formulae 1-1 and 1-2, M is Pt or Pd; each of X1, X2, and X3 is carbon; X4 is nitrogen; T8 is O, S, N(R81), C(R81)(R82), or Si(R81)(R82); and the remaining substituent groups are as defined herein.

Abstract: Provided are the organometallic compound represented by Formula 1 and an organic light-emitting device including the same: M, X1 to X4, X11, ring CY2 to ring CY4, T1, T2, R1 to R4, and a1 to a4 in Formula 1 are the same as described in the present specification.

Abstract: A heterocyclic compound represented by Formula 1 and an organic light-emitting device the heterocyclic compound represented by Formula 1: wherein, in Formula 1, Cz1 is a group represented by Formula 1A, Het1 is a group represented by Formula 1B, wherein, R1 to R10, R20, R30, R40, R50, and b10 to b50 are each independently the same as described in the detailed description of the specification.

Abstract: An organometallic compound represented by Formula 1, wherein M1 is beryllium, magnesium, aluminum, calcium, titanium, manganese, cobalt, copper, zinc, gallium, germanium, zirconium, ruthenium, rhodium, palladium, silver, rhenium, platinum, or gold; A1 to A3 are each independently a C5-C30 carbocyclic group or a C1-C30 heterocyclic group; A4 is a 5-membered heterocyclic group; A5 is at least two rings of a C7-C30 carbocyclic group comprising a 6-membered carbocyclic group, or A5 is at least two rings of a C1-C30 heterocyclic group comprising a 6-membered carbocyclic group or a 6-membered heterocyclic group; X10, X20, X30, and X40 to X44 are each independently C or N; T1 to T3 are each independently a single bond, *—N[(L1)a1-(R1)b1]—*?, *—B(R1)—*?, *—P(R1)—*?, *—C(R1)(R2)—*?, *—Si(R1)(R2)—*?, *—Ge(R1)(R2)—*?, *—S—*?, *—Se—*?, *—O—*?, *—C(?O)—*?, *—S(?O)—*?, *—S(?O)2—*?, *—C(R1)?C(R2)—*?, *—C(?S)—*?, or *—C?C—*?; and wherein the other substituents may be understood by referring to the detailed description.

Abstract: An organometallic compound represented by Formula 1: wherein, M is a transition metal, X11 is N or C(R11), X12 is N or C(R12), at least one of X11 and X12 is N, ring CY2, ring CY31, ring CY32, and ring CY4 are each independently a C3-C60 carbocyclic group or a C1-C60 heterocyclic group, Y2 to Y4 are each independently C or N, A2 to A4 are each independently a chemical bond, O, or S, a1 to a3 are each independently an integer from 1 to 3, and the remaining substitutions are as provided in the detailed description.

Abstract: Provided are an organometallic compound represented by Formula 1, an organic light-emitting device including the organometallic compound, and a diagnostic composition including the organometallic compound.

Abstract: Provided are the organometallic compound represented by Formula 1 and an organic light-emitting device including the same: M, X1 to X4, X11, ring CY2 to ring CY4, T1, T2, R1 to R4, and a1 to a4 in Formula 1 are the same as described in the present specification.

Abstract: An organometallic compound represented by Formula 1, an organic light-emitting device including the organometallic compound, and a diagnostic composition including the organometallic compound are provided: M1(L11)n11(L12)n12??Formula 1 wherein, in Formula 1, L11 may be a ligand represented by Formula 1-1, and the other substituents may be understood by referring to the descriptions thereof provided in the detailed description:

Abstract: Provided are an organometallic compound represented by Formula 1, an organic light-emitting device including the organometallic compound, and a diagnostic composition including the organometallic compound.

Abstract: There are provided a composition, a light-emitting device including the composition, and an electronic apparatus including the light-emitting device, wherein the composition includes a first compound including at least one pyrrole-containing condensed cyclic group and a silicon-containing group, and not including an electron-transporting moiety, and a second compound including an azine group including at least one nitrogen, and not including a silicon-containing group.

Abstract: An organometallic compound represented by Formula 1, an organic light-emitting device including the organometallic compound, and a diagnostic composition including the organometallic compound: M11(L11)n11(L12)n12??Formula 1 wherein, in Formula 1, M11 is a first-row transition metal, a second-row transition metal, or a third-row transition metal, L11 is a ligand represented by Formula 1-1, L12 is a monodentate ligand or a bidentate ligand, n11 is 1, and n12 is 0, 1, or 2: wherein, in Formula 1-1, Y11, A11, T11 k11, k12, k13, b11, E11 to E13 and R11 to R17 are described in the specification, and *1 to *4 each independently indicate a binding site to M11.

Abstract: Provided are an organometallic compound represented by Formula 1, an organic light-emitting device including the organometallic compound, and a diagnostic composition including the organometallic compound.

Abstract: Provided are an organometallic compound represented by Formula 1 and an organic light-emitting device including the same: wherein the detailed description of Formula 1 is the same as described in the present specification.

Abstract: An organometallic compound, represented by Formula 1: wherein, M1 is a transition metal, X10, X11, X20, X30, and X40 are each independently C or N, provided that one of X10 and X11 is N, and the other of X10 and X11 is C, ring A10 is a C5-C30 carbocyclic group or a C1-C30 heterocyclic group, wherein each of X12 and X13 is C, or when ring A10 is not present, X12 is C(R11) and X13 is C(R12), ring A11 is a pyrazole ring or an imidazole ring, rings A20, A30, and A40 are each independently a C5-C30 carbocyclic group or a C1-C30 heterocyclic group, and at least one of R10, R11, R12, R20, R30, or R40 is a group represented by Formula 2: wherein the remaining substituent groups are as described herein.

Abstract: An organometallic compound, represented by Formula 1: wherein M1 is a transition metal; X10 is C; X11 to X14, X20, X30 to X36, and X40 are each independently C or N; ring A20 and ring A40 are each independently a C5-C30 carbocyclic group or a C1-C30 heterocyclic group; and R1 to R5, R10, R20, R31, R32, R40, R51, R52, T1, b10, b20, b31, b32, and b40 are as defined herein.