Provided are an organic electroluminescent material and a device thereof. The organic electroluminescent material is a metal complex including a ligand L.sub.a having a structure of Formula 1, and the metal complex can be used as luminescent materials in electroluminescent devices. These new compounds, when used in electroluminescent devices, can show better performance, provide lower device voltage and higher device efficiency, and significantly improve the comprehensive performance of devices. Further provided are an electroluminescent device including the metal complex and a compound composition including the metal complex.

Provided are novel silyl-containing acetylacetonate derivatives compounds. Also provided are formulations comprising these silyl-containing acetylacetonate derivatives compounds. Further provided are OLEDs and related consumer products that utilize these silyl-containing acetylacetonate derivatives compounds.

The present invention relates to an organometallic complex as shown in general formula (I), and to a polymer, mixture and formulation comprising same, and to use thereof in an electronic device, in particular the use in an organic luminous diode. By providing a new high performance phosphorescent luminous material, in the present the device structure is optimized such that the device achieves the best performance, realizing a high efficiency, high luminance and high stability OLED device, thereby providing a better material option for full-color display and lighting.

Organic metal compounds and organic light-emitting devices employing the same are provided. The organic metal compound has a chemical structure of Formula (I) or Formula (II): ##STR00001##
In particular, one of the following two conditions (1) and (2) is met: (1) R.sup.1 is deuterium or C.sub.1-6 deuterated alkyl group, when R.sup.3 and R.sup.4 are independently hydrogen, halogen, C.sub.1-6 alkyl group, C.sub.1-6 fluoroalkyl or C.sub.3-12 heteroaryl group; and (2) R.sup.1 is hydrogen, deuterium, C.sub.1-6 alkyl group, C.sub.1-6 deuterated alkyl group, C.sub.3-12 heteroaryl group, or C.sub.6-12 aryl group, when at least one of R.sup.3 and R.sup.4 is C.sub.6-12 aryl group or C.sub.6-12 fluoroaryl group.

A compound of:

##STR00001##

is disclosed. In Formula III, ring B and ring C are each independently a 5 or 6-membered carbocyclic or heterocyclic ring; A-B represents a bonded pair of carbocyclic or heterocyclic rings coordinated to a metal M via a nitrogen atom in ring A and an sp.sup.2 hybridized atom in ring B; A-C represents a bonded pair of carbocyclic or heterocyclic rings; M is a metal having an atomic number greater than 40; L′ is a monoanionic bidentate ligand; m is the oxidation state of the metal M; and n is at least 1.

The invention relates to iridium complexes that are suitable for use in organic electroluminescent devices, in particular as emitters.

A novel compound is disclosed which includes a ligand L.sub.A of Formula II,

##STR00001##

wherein: ring B is independently a 5-membered or 6-membered carbocyclic or heterocyclic ring; X.sup.1 to X.sup.4 are each independently selected from the group consisting of C, N, and CR; at least one pair of adjacent X.sup.1 to X.sup.4 are each C and fused to Formula V

##STR00002##  where indicated by “”; X.sup.5 to X.sup.12 are each independently C or N; the maximum number of N within a ring is two; Z and Y are each independently selected from the group consisting of O, S, Se, NR′, CR′R″, SiR′R″, and GeR′R″; R.sup.B and R.sup.C each independently represents zero, mono, or up to a maximum allowed substitutions to its associated ring; each of R.sup.B, R.sup.C, R, R′, and R″ is independently hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, boryl, and combinations thereof; and two substituents can be joined or fused to form a ring; the ligand L.sub.A is complexed to a metal M through the two indicated dash lines of each Formula; and the ligand L.sub.A can be joined with other ligands to form a tridentate, tetradentate, pentadentate, or hexadentate ligand.

A composition, including a first compound represented by Formula 1 and a second compound represented by Formula 2:

Ir(L.sub.11).sub.n11(L.sub.12).sub.n12(L.sub.13).sub.n13  Formula 1

Ir(L.sub.21).sub.n21(L.sub.22).sub.n22(L.sub.23).sub.n23  Formula 2

wherein L.sub.11, L.sub.12, L.sub.13, L.sub.21, L.sub.22, and L.sub.23 are each i) a bidentate ligand bonded to Ir of Formula 1 or 2 via two nitrogen atoms, ii) a bidentate ligand bonded to Ir of Formula 1 or 2 via a nitrogen atom and a carbon atom, or iii) a bidentate ligand bonded to Ir of Formula 1 or 2 via two carbon atoms, L.sub.11, L.sub.12, and L.sub.13 are different from one another; n11, n12, n21, and n22 are each independently 1 or 2; n13 and n23 are each independently 0 or 1; a sum of n11, n12, and n13 is 3; a sum of n21, n22, and n23 is 3; and L.sub.11 and L.sub.21 are different from each other.

Provided are an organic electroluminescent material and a device comprising the same. The organic electroluminescent material is a metal complex comprising a ligand L.sub.a having a structure of Formula 1A and a ligand L.sub.b having a structure of Formula 1B. Such new types of compound can be applied to an electroluminescent device to improve luminescence performance, efficiency or a lifetime of the device, exhibit more saturated luminescence and significantly improve overall performance of the device. Further provided are an electroluminescent device comprising the metal complex and a compound composition comprising the metal complex.

Provided are an organic electroluminescent material and a device thereof. The organic electroluminescent material includes a metal M and at least one C{circumflex over ( )}N bidentate ligand L.sub.a coordinated with the metal M, the maximum emission wavelength of the photoluminescence spectrum of the organic electroluminescent material at room temperature is greater than or equal to 410 nm and less than or equal to 700 nm, and the emission spectrum area ratio of the organic electroluminescent material is less than or equal to 0.145. The metal complex has significant advantages in organic electroluminescent devices, in particular the improvement of device efficiency. Further provided are an organic electroluminescent device including the metal complex and a compound composition including the metal complex.