An iridium complex which has a phenylpyridine bidentate ligand containing a group represented by the following general formula (A):

##STR00001##

(In the general formula (A), X represents a cyano group or a halogenated alkyl group. L represents a single bond or a divalent linking group. R represents a substituent. n represents an integer of 0 to 4. * represents a binding site to a phenylpyridine bidentate ligand.)

The invention relates to noble metal-oxo clusters represented by the formula [M.sub.s(R.sub.2XO.sub.2).sub.z(OR′).sub.xO.sub.yX′.sub.q] or solvates thereof, corresponding supported noble metal-oxo clusters, and processes for their preparation, as well as corresponding metal cluster units, optionally in the form of a dispersion in a liquid carrier medium or immobilized on a solid support, and processes for their preparation, as well as their use in conversion of organic substrate.

Pertains to the design and applications of platinum (II) compounds supported by a bidentate and N-heterocyclic carbene ligands. The Pt (II) complexes exhibit strong emission intensity differences when contacted with matched and mismatched DNA. In addition, the Pt (II) complexes show a color tunable effect when exposed to mismatched compared to matched DNA, which color effect can be easily detected.

According to an aspect of the present disclosure, a compound having a metal planar tetradentate coordination configuration is disclosed. In the compounds, the metal M is Pt or Pd; the four coordinating atoms are Z.sup.1, Z.sup.2, Z.sup.3, and Z.sup.4 and are each selected from N, C, and O. The compound includes a substituent R, and atoms M, Z.sup.1, Z.sup.2, Z.sup.3, and Z.sup.4 are used to define a first plane that passes through the metal M and is positioned to have a minimum sum of shortest distances with Z.sup.1, Z.sup.2, Z.sup.3, and Z.sup.4. At least one non-hydrogen atom in R falls within a distal circle of a cylinder extending perpendicular to the first plane, where the distal circle of the cylinder is a height h from the base circle and the height h ranges from 3.3 Å to 4.8 Å.

A compound having the following formula ##STR00001##
Formula I, is disclosed. The compound is useful as an emitter in OLED applications.

An organometallic compound represented by Formula 1:

##STR00001##

wherein M.sub.1 is a transition metal, Ln.sub.1 is a ligand represented by Formula 1A, Ln.sub.2 is a ligand represented by Formula 1B, n1 is 1 or 2, and n2 is 1 or 2:

##STR00002##

##STR00003##

wherein ring CY.sub.3 is: a 5-membered N-containing heterocyclic group; or a 5-membered N-containing heterocyclic group condensed with a C.sub.5-C.sub.30 carbocyclic group or a C.sub.1-C.sub.30 heterocyclic group, ring CY.sub.4 is: a 6-membered carbocyclic group; a 6-membered heterocyclic group; a 6-membered carbocyclic group condensed with a C.sub.5-C.sub.30 carbocyclic group or a C.sub.1-C.sub.30 heterocyclic group; or a 6-membered heterocyclic group condensed with a C.sub.5-C.sub.30 carbocyclic group or a C.sub.1-C.sub.30 heterocyclic group, Y.sub.1 is O, S, Se, or C(R.sub.1)(R.sub.2), Y.sub.2 is O or S, and b30, b40, R.sub.1, R.sub.2, R.sub.11 to R.sub.14, R.sub.21 to R.sub.26, R.sub.30, and R.sub.40 are as defined herein.

Provided are organometallic compounds having a structure of

##STR00001##

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

The present invention relates to heteroleptic carbene complexes comprising at least two different carbene ligands, to a process for preparing the heteroleptic carbene complexes, to the use of the heteroleptic carbene complexes in organic light-emitting diodes, to organic light-emitting diodes comprising at least one inventive heteroleptic carbene complex, to a light-emitting layer comprising at least one inventive heteroleptic carbene complex, to organic light-emitting diodes comprising at least one inventive light-emitting layer, and to devices which comprise at least one inventive organic light-emitting diode.

Novel Iridium complexes having three different bidentate ligands useful for phosphorescent emitters in OLEDs are disclosed. At least one of the three different bidentate ligands is a carbene ligand.

An organic light-emitting device including a first electrode, a second electrode, an emission layer disposed between the first electrode and the second electrode, a hole transport region disposed between the first electrode and the emission layer, and an electron transport region disposed between the emission layer and the second electrode, wherein the emission layer includes a host and a dopant, wherein the dopant is an iridium-free organometallic compound, and wherein a dopant concentration profile of the emission layer satisfies predetermined parameters disclosed in the specification.