Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1,2-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.

The present invention relates to the use of aromatic boronic acid or borinic acid derivatives in organic electronic devices, in particular electroluminescent devices.

The present invention relates to boronic heterocyclic compounds, which are suitable for use in electronic devices, and to electronic devices, in particular organic electroluminescent devices, containing said compounds.

Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1,2-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.

Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1,2-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.

Disclosed are a linear boron-dipyrromethene electron donor having a 180 coordination included angle and a supramolecular metallacycle, and synthesis processes therefor and applications thereof. The invention provides a linear boron-dipyrromethene electron donor as shown in formula 3 or formula 4, and a boron-dipyrromethene ligand-based supramolecular coordination compound having a 180 coordination included angle which is prepared by the metal coordination of the linear boron-dipyrromethene electron donor. Compared with a prepolymer, the boron-dipyrromethene ligand-based supramolecular coordination compound has better cell passive uptake capacity, cell fluorescence imaging capacity and photosensitive (singlet oxygen generation) capability.

Provided is an organic light emitting device comprising a light emitting stack that comprises: a first electrode; a second electrode; a first layer disposed between the first electrode and the second electrode; wherein the first layer is selected from the group consisting of hole injecting layer, hole transporting layer, electron blocking layer, emissive layer, hole blocking layer, electron transporting layer, and electron injecting layer; wherein the first layer comprises a first compound and a second compound mixed together; wherein the first compound comprises a first element (F1) selected from the group consisting of D, F, CN, Si, Ge, P, B, and Se; wherein the second compound comprises a first element (S1) selected from the group consisting of D, F, CN, Si, Ge, P, B, and Se; and wherein the first element of the first compound can be same or different from the first element (S1) of the second compound.

A compound having a formula M(L.sub.A).sub.x(L.sub.B).sub.y(L.sub.C).sub.z is provided. In the compound of M(L.sub.A).sub.x(L.sub.B).sub.y(L.sub.C).sub.z, ligand L.sub.A is

##STR00001##

ligand L.sub.B is

##STR00002##

and ligand L.sub.C is

##STR00003##

In addition, M is a metal having an atomic mass greater than 40, x is 1, 2, or 3, and y and z are independently 0, 1, or 2. In the compound, Z.sup.5 is carbon or nitrogen; one of Z.sup.1 to Z.sup.4 is nitrogen and three of Z.sup.1 to Z.sup.4 are carbon substituted by R.sup.B, and rings C and D are each independently a 5 or 6-membered carbocyclic or heterocyclic ring. Each R.sup.A, R.sup.B, R.sup.C, and R.sup.D is independently selected from a group of substituents, where at least one R.sup.B is heteroaryl, which can be further substituted, and any adjacent substitutents are optionally joined or fused into a ring. Formulations and devices, such as OLEDs, that include the first compound are also provided.

Described herein are devices, compositions, and methods for improving color discernment.

Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1,2-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.