Provided are organometallic compounds. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Novel phosphorescent tetradentate platinum compounds of Formula I are provided. The complexes contain a dibenzo moiety, which allows for the creation of OLED devices with improved properties when compounds of Formula I are incorporated into such devices. Compounds of Formula I that comprise two ligands that contain a 5-membered carbocyclic or heterocyclic ring, one of which contains an imidazole ring with a twisted aryl group attached to N1 and a second aromatic ring that is attached to the platinum via a carbon atom. These compounds may be advantageously used in OLEDs.

Novel phosphorescent tetradentate platinum compounds of Formula I are provided. The complexes contain a dibenzo moiety, which allows for the creation of OLED devices with improved properties when compounds of Formula I are incorporated into such devices. Compounds of Formula I that comprise two ligands that contain a 5-membered carbocyclic or heterocyclic ring, one of which contains an imidazole ring with a twisted aryl group attached to N1 and a second aromatic ring that is attached to the platinum via a carbon atom. These compounds may be advantageously used in OLEDs.

A composite material. and a light-emitting diode and a preparation method therefor. The composite material includes a carbolong compound and a heteromacrocyclic compound, wherein the molar ratio of the carbolong compound to the heteromacrocyclic compound is 1:1-3; the carbolong compound comprises anions and cations; and the heteromacrocyclic compound is selected from one of a substituted or unsubstituted heteroaromatic compound which has 6-20 annular atoms and is of a semi-ring structure, a substituted or unsubstituted heteroaromatic compound having 12-50 annular atoms, a dimer of a substituted or unsubstituted heteroaromatic compound having 12-50 annular atoms, and a trimer of a substituted or unsubstituted heteroaromatic compound having 12-50 annular atoms. The composite material can reduce the work function of an electrode, prolong the operating life of a device, and improve the performance of the device.

Providing a novel organometallic complex represented by Structure Formula (G1). A.sup.1 to A.sup.4 independently represent an alkyl group having 1 to 6 carbon atoms or a cycloalkyl group having 3 to 6 carbon atoms. R.sup.1 to R.sup.5 independently represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, and a cyano group, wherein at least one of R.sup.1 to R.sup.5 represents a cyano group. R.sup.11 to R.sup.14 independently represent an alkyl group having 2 to 6 carbon atoms or a cycloalkyl group having 3 to 6 carbon atoms. R.sup.15 and R.sup.16 independently represent any one of hydrogen, a methyl group, and an ethyl group. Note that R.sup.11 and R.sup.12 may be bonded to each other to form a ring, and R.sup.13 and R.sup.14 may be bonded to each other to form a ring. ##STR00001##

The present invention relates to a platinum metal complex and an application thereof in an organic light-emitting device. The platinum metal complex is a compound having a structure of chemical formula (I). An organic light-emitting device to which the compound is applied has a relatively low driving voltage, a relatively high luminous efficiency and improved service life to a certain extent; therefore, the complex has the potential of being applied in the field of organic light-emitting devices. Also provided is an organic light-emitting device, including a cathode, an anode, and an organic layer. The organic layer is one or more of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer; and at least one layer in the organic layer contains the compound of structural formula (I). ##STR00001##

Providing a novel organometallic complex represented by Structure Formula (G1). A.sup.1 to A.sup.4 independently represent an alkyl group having 1 to 6 carbon atoms or a cycloalkyl group having 3 to 6 carbon atoms. R.sup.1 to R.sup.5 independently represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, and a cyano group, wherein at least one of R.sup.1 to R.sup.5 represents a cyano group. R.sup.11 to R.sup.14 independently represent an alkyl group having 2 to 6 carbon atoms or a cycloalkyl group having 3 to 6 carbon atoms. R.sup.15 and R.sup.16 independently represent any one of hydrogen, a methyl group, and an ethyl group. Note that R.sup.11 and R.sup.12 may be bonded to each other to form a ring, and R.sup.13 and R.sup.14 may be bonded to each other to form a ring.

##STR00001##

A compound including a bidentate ligand L.sub.A that includes a moiety of Formula I, ##STR00001##
is described. In Formula I, ligand L.sub.A is coordinated to a metal M by two bonds, and (i) both bonds are with Formula I, and if the metal M is coordinated by a direct bond to a nitrogen of ring C or ring D, then at least one of ring A, ring B, ring C, and ring D is not a benzene ring; or (ii) one of the two bonds is with Formula I, and the other bond is with Formula II ##STR00002##
which is attached to one of rings A, B, C, or D. In addition, each of ring A, ring B, ring C, ring D, and, if present, ring E is a 5-membered or 6-membered ring; each R.sup.A, R.sup.B, R.sup.C, R.sup.D, and R.sup.E is a hydrogen or one of a variety of substituents.

In one aspect, phosphine compounds comprising three adamantyl moieties (PAd.sub.3) and associated synthetic routes are described herein. Each adamantyl moiety may be the same or different. For example, each adamantyl moiety (Ad) attached to the phosphorus atom can be independently selected from the group consisting of adamantane, diamantane, triamantane and derivatives thereof. Transition metal complexes comprising PAd.sub.3 ligands are also provided for catalytic synthesis including catalytic cross-coupling reactions.

In one aspect, phosphine compounds comprising three adamantyl moieties (PAd.sub.3) and associated synthetic routes are described herein. Each adamantyl moiety may be the same or different. For example, each adamantyl moiety (Ad) attached to the phosphorus atom can be independently selected from the group consisting of adamantane, diamantane, triamantane and derivatives thereof. Transition metal complexes comprising PAd.sub.3 ligands are also provided for catalytic synthesis including catalytic cross-coupling reactions.