A compound of Formula I,

##STR00001##

is disclosed. In Formula I, M is Pd or Pt; each of X.sup.1 to X.sup.12 is C or N; each of X.sup.13 and X.sup.14 is CH, CD or N; each of Z.sup.1, Z.sup.2, and Z.sup.3 is C or N; L.sup.1 is selected from a variety of bivalent linkers; X is selected from O, S, Se, NR′, and CR″R′″; each R, R′, R.sup.1, R.sup.2, R.sup.3, R.sup.A, R.sup.B, R.sup.C, R.sup.D, and R.sup.E is hydrogen or a General Substituent; at least one of Z.sup.1, Z.sup.2, and Z.sup.3 is a carbon atom substituted with a substituent with a molecular weight of at least 16. Formulations, OLEDs, and consumer products that include Formula I are also disclosed.

Disclosed herein are a novel organometallic compound and an organic light-emitting diode including same. More specifically, an organometallic compound represented by [Chemical Formula 1] and an organic light-emitting diode including same are provided.

The present disclosure relates to a boron compound applicable to an organic light-emitting diode and an organic light-emitting diode comprising same. More specifically, the present disclosure relates to a boron compound represented by any one of Chemical Formulas A to D and an organic light-emitting diode comprising same, wherein Chemical Formulas A to D are as defined in the description.

Provided is an organic light emitting device including a light emitting layer comprising a compound of Chemical Formula 1 and a first organic material layer comprising a compound of Chemical Formula 2:

##STR00001## wherein: Cy1 to Cy5 are each independently one selected from among a substituted or unsubstituted: aromatic hydrocarbon ring, aliphatic hydrocarbon ring, and aromatic hetero ring, or a ring in which two or more rings selected from the above group are fused, one or more of Cy1 to Cy5 are a ring of Chemical Formula 1-A:

##STR00002## one to three of a* to d* are a position fused to or linked to Chemical Formula 1;

##STR00003## L1 to L3 are each independently a direct bond or a substituted or unsubstituted: arylene or divalent heterocyclic group; and Ar1 and Ar2 are each independently a substituted or unsubstituted: aryl or heterocyclic group.

Cannabidiol derivatives and medical use thereof, in particular to compounds represented by general formula (I), or stereoisomers, solvates, metabolites, pharmaceutically acceptable salts or cocrystals thereof, wherein the definitions of the substituents in general formula (I) are the same as those in the description.

##STR00001##

A compound is disclosed that is selected from the group consisting of a structure having Formula I ##STR00001##
and a structure having Formula II ##STR00002##

Multinuclear complexes and methods for preparing them are provided. The discrete multinuclear complexes include a one or more transition metals and a radioisotope having the same coordination geometry as the transition metal. A bridging ligand is coordinated to the transition metal and the radioisotope to link the transition metal and the radioisotope and pendent ligands are coordinated to each of the transition metal and the radioisotope to stabilise the complex. The multinuclear complexes may include a radioisotope or radioelement that can be detected by medical equipment and may find use in therapy and/or the diagnosis of disease in patients.

Provided are a polycyclic compound represented by Formula 1, an organic light-emitting device including the polycyclic compound, and an electronic apparatus including the organic light-emitting device:

##STR00001##

Formula 1 may be understood by referring to the description of Formula 1 provided herein.

A compound including a first ligand L.sub.A of Formula I,

##STR00001##

is disclosed. In Formula I, ring B is a 5- or 6-membered ring; X.sup.1, X.sup.2, and X.sup.3 are each CR.sup.A or N; R is a 5- or 6-membered carbocyclic or heterocyclic ring, which can be further fused or substituted; and (1) when ring B is an unfused 6-membered ring, X.sup.1 and X.sup.2 are N, and X.sup.3 is C; and (2) when ring B is a fused 6-membered ring, ring B has the structure of Formula II,

##STR00002##

In this structure, the wavy line indicates the point of connection to ring A; Q.sup.1 to Q.sup.6 are each C or N; and, when proviso (2) applies, (I) at least one of X.sup.1, X.sup.2, and X.sup.3 is N; or (II) R is two or more fused or unfused 5- or 6-membered carbocyclic or heterocyclic rings, or (III) at least ring A or R is substituted with a partially or fully deuterated alkyl or partially or fully deuterated cycloalkyl group.

Provided is an organic light-emitting device including a light-emitting layer comprising a compound of Chemical Formula 1, and a first organic material layer comprising a compound of Chemical Formula 2:

##STR00001## wherein: Cy1 to Cy5 are each independently one selected from the group consisting of a substituted or unsubstituted: aromatic hydrocarbon ring, aliphatic hydrocarbon ring, and an aromatic hetero ring, or a ring in which two or more rings selected from the above group are fused, one or more of Cy1 to Cy5 are a ring of the following Chemical Formula 1-A,

##STR00002##

wherein: Ar1 and Ar2 are the same as or different from each other, and are each independently a phenyl, a biphenyl, a terphenyl, a naphthyl, a phenanthrenyl, or a triphenylenyl, where the naphthyl, phenanthrenyl, and triphenylenyl can be substituted with a phenyl.